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SCS Tracer Environmental Title Page
Revision 0: May 21, 2012
PIPELINE SAFETY HAZARD ASSESSMENT
OF THE
CENTINELA VALLEY UNION HIGH SCHOOL DISTRICT
LAWNDALE HIGH SCHOOL
NORTHEASTERN CAMPUS PEDESTRIAN &
TRAFFIC SAFETY PROJECT
Prepared By:
SCS TRACER ENVIRONMENTAL 970 Los Vallecitos Boulevard, Suite 100
San Marcos, California 92069
(760) 744-9611
www.scsengineers.com
Project No. 01211298.01
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TABLE OF CONTENTS
SECTION PAGE
1.0 INTRODUCTION.......................................................................................................... 1-1
2.0 SITE DESCRIPTION .................................................................................................... 2-1
3.0 RISK ANALYSIS........................................................................................................... 3-1
3.1 REGULATORY REQUIREMENTS................................................................... 3-1
3.2 METHODOLOGY .............................................................................................. 3-1
3.2.1 High Pressure Hazardous Substance Pipelines ........................................ 3-1
3.2.2 High Volume Water Pipelines ................................................................. 3-2
3.3 PIPELINES WITHIN 1,500 FEET OF PROPOSED SITE ................................. 3-3
3.4 RISK ANALYSIS RESULTS ............................................................................. 3-4
3.4.1 High Pressure Hazardous Substance Pipelines ........................................ 3-4
3.4.2 High Volume Water Pipelines ................................................................. 3-4
4.0 MITIGATIONS.............................................................................................................. 4-1
4.1 HIGH PRESSURE HAZARDOUS SUBSTANCE PIPELINES ........................ 4-1
4.2 HIGH VOLUME WATER PIPELINES .............................................................. 4-1
5.0 CONCLUSIONS ............................................................................................................ 5-1
REFERENCES ...........................................................................................................................R-1
APPENDICES
A STANDARD REPORTING FORMS ................................................................. A-1
B RISK CALCULATIONS .....................................................................................B-1
C SITE MAPS .........................................................................................................C-1
D PIPELINE MAPS ............................................................................................... D-1
E WIND ROSE ....................................................................................................... E-1
F DATA COLLECTION ........................................................................................ F-1
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LIST OF FIGURES
FIGURE PAGE
2-1 Region within 1,500 Feet of Site ..................................................................................... 2-2
2-2 Site Location .................................................................................................................... 2-3
C-1 Land Title Survey ............................................................................................................C-1
C-2 Existing Conditions ..........................................................................................................C-2
C-3 Conceptual Site Design without Additional Property ......................................................C-3
C-4 Existing Bike Enclosure Design ......................................................................................C-4
C-5 Conceptual Site Design with Additional Property ...........................................................C-5
D-1 Mapped Pipelines within 1,500 Feet (Excluding ExxonMobil) ..................................... D-1
D-2 ExxonMobil Mapped Pipelines....................................................................................... D-2
E-1 Lennox Wind Rose .......................................................................................................... E-1
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LIST OF TABLES
TABLE PAGE
2-1 Site Information ............................................................................................................... 2-1
3-1 High Pressure Hazardous Substance Pipelines and High Volume Water Lines within
1,500 Feet of Proposed Site ............................................................................................. 3-3
3-2 High Pressure Hazardous Substance Pipeline Risks ........................................................ 3-4
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1.0 INTRODUCTION
This Pipeline Safety Hazard Assessment (PSHA) has been prepared for the Centinela Valley
Union High School District (CVUHSD) Lawndale High School Northeastern Campus Pedestrian
& Traffic Safety Project. Lawndale High School is located at 14901 S. Inglewood Avenue in
Lawndale, California. The existing school is proposing to acquire the adjacent southern portion
of parcel APN 4149-001-145 (Additional Property) which is approximately 25 feet by 418 feet in
size.
The purpose of this PSHA is to estimate the safety risk from pipelines near the Additional
Property pursuant to California Code of Regulations, Title 5 Education, Division 1 California
Department of Education, Chapter 13 School Facilities and Equipment, Subchapter 1 School
Housing, Article 2 School Sites, Section 14010 Standards for School Site Selection, Subsection
(h):
5 CCR §14010(h): The site shall not be located near an above-ground water or fuel
storage tank or within 1500 feet of the easement of an above ground or underground
pipeline that can pose a safety hazard as determined by a risk analysis study, conducted
by a competent professional, which may include certification from a local public utility
commission.
This PSHA has been prepared using the California Department of Education (CDE) Guidance
Protocol for School Site Pipeline Risk Analysis [1]
. Section 2 describes the proposed site while
Section 3 describes the risk analysis conducted. Section 4 discusses any mitigation required to
meet the CDE’s safety risk approval criteria while Section 5 presents the conclusions. Finally,
the appendices provide the supporting documentation.
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2.0 SITE DESCRIPTION
Table 2-1 provides a summary of the site which is adjacent to the existing Lawndale High
School. See Figures 2-1 and 2-2 for the site location and the region within 1,500 feet. See
Appendix C for additional site maps. Note, Table 2-1 also lists the various school operations that
are co-located/adjacent to Lawndale High School.
TABLE 2-1 Site Information
Item Comments
Local Educational Agency (LEA) Centinela Valley Union High School District (CVUHSD)
Name and Description of Site The Additional Property (~ 25 feet x 418 feet) is located at 14701 S. Inglewood
Avenue in Hawthorne, California. The site is a former railroad right of way
that is the southern portion of APN 4149-001-145. The surrounding area is
urban and relatively flat.
Adjacent School Operations Lawndale High School
14901 S. Inglewood Avenue
Lawndale, CA 90260
Centinela Valley Union High School District
14901 S. Inglewood Avenue
Lawndale, CA 90260
R.K. Lloyde Continuation High School
4951 Marine Avenue
Lawndale, CA 90260
Centinela Valley Independent Study School
4951 Marine Avenue
Lawndale, CA 90260
Centinela Valley Adult School
4953 Marine Avenue
Lawndale, CA 90260
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FIGURE 2-1 Region within 1,500 Feet of Site [2]
Scale (ft)
0 1,406
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FIGURE 2-2 Site Location [2]
Scale (ft)
0 360
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3.0 RISK ANALYSIS
3.1 REGULATORY REQUIREMENTS
The State of California requires that the proposed site meet the following criteria for approval:
Ed. Code §17213(a)(3). A site that contains one or more pipelines, situated underground
or aboveground, that carries hazardous substances, extremely hazardous substances, or
hazardous wastes, unless the pipeline is a natural gas line that is used only to supply
natural gas to that school or neighborhood.
5 CCR §14010(h). The site shall not be located near an above-ground water or fuel
storage tank or within 1500 feet of the easement of an above ground or underground
pipeline that can pose a safety hazard as determined by a risk analysis study, conducted
by a competent professional, which may include certification from a local public utility
commission.
The purpose of this PSHA is to address these regulations (except for any nearby above-ground
water or fuel storage tanks which have been addressed under separate cover).
3.2 METHODOLOGY [1]
This PSHA has been prepared using the California Department of Education (CDE) Guidance
Protocol for School Site Pipeline Risk Analysis [1]
. The CDE protocol is limited to:
high pressure hazardous substance pipelines operating at a pressure of at least 80 pounds
per square inch gage (psig) such as petroleum, petroleum product, natural gas lines; and
high volume water lines at least 12” in diameter (regardless of pressure).
3.2.1 High Pressure Hazardous Substance Pipelines [1]
The Individual Risk (IR) for a specified pipeline hazard is the probability of fatality for an
individual exposed to the physical impact of that hazard, for a specified location, within a
specified span of time. Individual exposure depends on the hazard impact distance and the
distance between the hazard source and the individual receptor location. For an individual at a
specified location subject to a hazard source, the IR is generally defined by the following
equation (CCPS 1989):
IR(i,X) = PC(i,X) x PF(i,X) (Eqn. 1)
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where:
IR(i,x) = the individual risk at a defined location, i, for a defined hazard, X
PC(i,X) = the probability for an individual’s exposure to hazard X’s impact at location, i
PF(i,X) = the probability of fatality, at location i, from the impact of hazard X
The CDE Protocol considers six distinct types of release hazards:
1. leak jet (or pool for liquids) fire (LJF)
2. rupture jet (or pool) fire (RJF)
3. leak flash fire (LFF)
4. rupture flash fire (RFF)
5. leak explosion (LEX)
6. rupture explosion (REX)
The IR for all hazards from a single pipeline is then calculated as follows:
IR = IR(LJF) + IR(RJF) + IR(LFF) + IR(RFF) + IR(LEX) + IR(REX) (Eqn. 2)
The total IR (TIR) was conservatively estimated to the sum of the risk from all pipelines within
1,500 feet. The TIR was then compared to the CDE’s Individual Risk Criterion (IRC) of one
chance in a million to determine if any mitigation measures were required to lower the potential
risk at the site.
Some of the simplifying assumptions used in the CDE Protocol include:
All hazards originate at a point location along the pipeline segment of concern, within
their respective XSEGs (segment length for which a hazard X can impact a receptor);
The wind distribution is uniform;
A single wind speed and atmospheric stability class are used;
No mitigation factors are considered;
Ignition sources are uniformly distributed (the probability of ignition does not depend on
release directions); and
Consequence effects can be treated discretely. The impact level from a particular
increment is constant, and the effect in a defined impact zone is constant.
3.2.2 High Volume Water Pipelines [1]
The risk from water pipelines is associated with the potential for flooding and for subterranean
erosion leading to subsidence or a sinkhole. For water lines, an evaluation for potential physical
impacts was conducted as no probability analysis was required. The water impact was estimated
for two scenarios:
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1. a release on relatively flat terrain that forms a circular pool spreading from the release
point; and
2. a release illustrating the effect of drainage in a channel.
The water pipeline analysis assumed the following:
Average design velocity of 5 feet per second
Time to shut-off of five minutes
Drain down after shut off is negligible
Spill pool depth of 12 inches
3.3 PIPELINES WITHIN 1,500 FEET OF PROPOSED SITE
The site maps in Appendix C as well as the resources in Appendix F were used to identify the
high pressure hazardous substance pipelines and high volume water lines within 1,500 feet of the
proposed site. Table 3-1 summarizes the pipelines identified for analysis in this PSHA. See the
maps in Appendix D for the pipeline locations.
TABLE 3-1 High Pressure Hazardous Substance Pipelines and High Volume Water Lines
within 1,500 Feet of Proposed Site
Owner/Operator Pipeline Pipeline Length with
1,500 Feet of Site
(feet)
Minimum Distance from
Pipeline to Proposed Site
(feet)
Crimson Pipeline LP 12” crude oil 3,200 10
ExxonMobil 6” gas 3,200 600
ExxonMobil 4” crude oil 2,575 600
10” crude oil 1,450 1,075
Golden State Water Company 16” water 3,100 25
Note, Education Code §17213(a)(3) does not allow a site to contain one or more pipelines,
situated underground or aboveground, that carries hazardous substances, extremely hazardous
substances, or hazardous wastes, unless the pipeline is a natural gas line that is used only to
supply natural gas to that school or neighborhood. This PSHA did not identify any such pipelines
on the proposed site but did note the following easement which was recorded for the site:
Easement(s) for private roadway crossing, underground and/or utility line crossings and
underground pipe and sewer line crossings and rights incidental thereto as reserved in a
document recorded November 9, 1961 as Instrument No. 424, of official records. Among
other things, stated no more than four (4) easement to be granted.
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3.4 RISK ANALYSIS RESULTS
3.4.1 High Pressure Hazardous Substance Pipelines
Table 3-2 summarizes the estimated risks per year for the high pressure hazardous substance
pipelines within 1,500 feet of the proposed site. Based on the analysis, the proposed site has a
total Individual Risk from all pipelines below the CDE’s criterion of 1 chance in a million each
year. See Appendices A and B for details of the risk calculations.
TABLE 3-2 High Pressure Hazardous Substance Pipeline Risks
Pipeline IR(LJF) IR(RJF) IR(LFF) IR(RFF) IR(LEX) IR(REX) IR
Crimson 12” crude oil 1.3E-07 2.1E-08 0 1.1E-10 0 0 1.5E-07
ExxonMobil 6” gas 0 0 0 1.1E-09 0 0 1.1E-09
ExxonMobil 4” crude oil 0 0 0 0 0 0 0
ExxonMobil 10” crude oil 0 0 0 0 0 0 0
Total IR: 1.5E-07
CDE IRC: 1.0E-06
3.4.2 High Volume Water Pipelines
There is one 16” diameter underground water pipeline approximately 25 feet east of the site. The
pipeline runs north-south underneath Inglewood Avenue which is approximately 60 feet wide.
Releases are based on an assumed failure of the pipe with flow from the pipeline’s entire
diameter. Assuming an average design velocity of five feet per second, time to shut-off is five
minutes, drain down after shut off is assumed negligible, and a spill pool depth of 12 inches, the
impact distance was then calculated for two scenarios:
1. a release on relatively flat terrain that forms a circular pool west of the release point; and
2. a release illustrating the effect of drainage in a channel formed by the street curbs.
Scenario #1 – Circular Pool
The pool is assumed to form on the proposed site side of the water pipeline. The diameter of the
spill pool was used to estimate the impact distance as follows:
Nominal pipe area = (pr2) = (3.14.15 * 8
2) = 201.06 in
2 = 1.40 ft
2
Release rate = 1.40 ft2 * 5 ft/sec * 60 sec/min = 420 cfm = 3,142 gpm
Release volume = 420 cfm * 5 min = 2,100 ft3
Pool surface area (1 foot depth) = 2,100 ft3 / 1 ft = 2,100 ft
2
Impact distance for circular pool = (4 * 2,100 ft2 / p)
0.5 = 52 feet
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Scenario #2 - Channel
Inglewood Avenue is approximately 60 feet wide. The impact width for a rectangular channel 60
feet in length is estimated as follows:
Pool surface area (1 foot depth) = 2,100 ft3 / 1 ft = 2,100 ft
2
Channel length = 60 ft
Impact width along Inglewood Avenue = (2,100 ft2 / 60 ft) = 35 feet
Comments
The water pipeline runs underneath Inglewood Avenue which is adjacent to the existing
Lawndale High School as well as the proposed site. Although a spill from the water pipeline
could reach the proposed site, it is assumed that the existing street curbs and storm drains along
Inglewood Avenue will provide acceptable mitigation by redirecting the majority of the water
spill away from the proposed site.
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4.0 MITIGATIONS
4.1 HIGH PRESSURE HAZARDOUS SUBSTANCE PIPELINES
Since the total individual risk from all high pressure hazardous substance pipelines was
estimated to be less than the CDE’s Individual Risk Criterion (IRC) of one chance in a million
each year, this study does not recommend any mitigations to lower the potential risk.
4.2 HIGH VOLUME WATER PIPELINES
A 16” water pipeline runs underneath Inglewood Avenue which is adjacent to the existing
Lawndale High School as well as the proposed site. Although a spill from the water pipeline
could reach the proposed site, it is assumed that the existing street curbs and storm drains along
Inglewood Avenue will provide acceptable mitigation by redirecting the majority of the water
spill away from the proposed site.
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5.0 CONCLUSIONS
This PSHA analyzed the potential safety risks from high pressure hazardous substance pipelines
within 1,500 feet of the proposed site using the CDE’s Pipeline Risk Analysis Protocol. The
analysis found that the total estimated risk of 0.15 in million per year is below the CDE’s
individual risk criterion of 1.0 in a million per year. Since the proposed site is estimated to have
an insignificant safety risk from such pipelines, no mitigation measures are recommended.
In addition, the proposed site was not expected to be significantly impacted by the nearby 16”
high volume water pipeline since the street curbing and storm drains are assumed to redirect the
majority of any water spills away from the site.
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REFERENCES
1. URS Corporation, “California Department of Education Guidance Protocol School Site
Pipeline Risk”, http://www.cde.ca.gov/ls/fa/sf/protocol07.asp, February 2007.
2. Google, “Google Earth Pro”, http://www.google.com/earth/index.html, May 2012.
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APPENDIX A
STANDARD REPORTING FORMS
California Department of Education CCR, Title 5, Pipeline Risk Analysis Report
Form 1 – Administrative, Summary, and Signature Form
Local Educational Agency
Date 5/20/2012
Local Educational Agency Centinela Valley Union High School District
Contact
Telephone Number 310-263-3200
E-mail Address
Street Address 14901 S. Inglewood Avenue
Department or Mail Drop
City Lawndale
County Los Angeles
Zip Code 90260
Proposed School Campus Site
Name 14701 S. Inglewood Ave, Hawthorne, CA
Location Description The Additional Property (~ 25 feet x 418 feet) is
located at 14701 S. Inglewood Avenue in Hawthorne,
California. The site is a former railroad right of way
that is the southern portion of APN 4149-001-145. The
surrounding area is urban and relatively flat.
Pipeline of Interest
Operator / Owner Crimson (12” crude line), ExxonMobil (6” gas line),
ExxonMobil (4” crude line), ExxonMobil (10” crude
line), and Golden State Water Co. (16” water line).
Product Transported See above.
Pipeline Diameter (inches) See above.
Operating Pressure (psig) Crimson: Unknown (assumed 400 psig).
ExxonMobil: Lines currently idle (assumed 400 psig).
Golden State Water Company: (not applicable).
Closet Approach to Property Line
(or boundary between the usable
and unusable portion of the site if
the unusable portion faces the
pipeline.) (ft)
Crimson (12” crude line) = 10 ft
ExxonMobil (6” gas line) = 600 ft
ExxonMobil (4” crude line) = 600 ft
ExxonMobil (10” crude line) = 1,075 ft
Golden State Water Co. (16” water line) = 25 ft.
Individual Risk Estimate Result
Type of Analysis (Check One) Stage 1 Stage 2 X Stage 3
Individual Risk Estimate Value 1.5E-07
Individual Risk Criterion 1.0E-06 (0.000001)
IR Significance (check one) Significant
Insignificant X (Continued on next page)
California Department of Education CCR, Title 5, Pipeline Risk Analysis Report
Form 1 – Administrative, Summary, and Signature Form (Continued from previous page)
Population Risk Indicator Result
Protocol Average IR 3.8E-08
IR Indicator (Average IR / Property
Line IR Ratio) 0.25
Population Risk Indicator
Prevention and Mitigation Recommendations/Implementations (Add additional sheets with
more details as needed.)
Prevention Measures: No additional prevention measures recommended.
Mitigation Measures: No additional mitigation measures recommended.
Conclusions/Other Suggestions/Recommendations (Add more sheets, if needed.)
Insignificant safety risk based on the analysis.
Certification and Signatures of Risk Analyst(s)
This analysis was conducted according to the 2007 CDE Protocol except as noted. All
modifications within the Stage 2 framework, and Stage 3 analyses and exceptions to the data and
processes established in the 2007 CDE Protocol, if any, were based upon my professional opinion
and in a manner consistent with the standards of care and skill ordinarily exercised by
professionals working on similar projects.
I certify that the estimated risk levels were derived based upon the 2007 CDE Protocol, unless
otherwise noted, and that these levels demonstrate, within reasonable expectations of
uncertainties for such estimates, that the estimated Individual Risk for the school site, as the site
was planned at the time of this analysis, including mitigation measures, if any, meets the
Individual Risk Criterion stated in the 2007 CDE Protocol, based on the information provided to
me.
Printed Name Signature Position or Title
Greg Hauser Project Director
Notice: In the event that the Individual Risk Criterion could not be met, at the option of the
LEA, CDE will still accept a report for review and consultation with the LEA.
California Department of Education CCR, Title 5, Pipeline Risk Analysis Report Form 2 - Pipeline Risk Analysis Input Data
Date: 5/20/2012
Local Educational Agency: Centinela Valley Union High School District
Proposed School Site Name: Lawndale High School
Proposed School Estimated Population:
Product Designate by
an “X”
Natural gas (NG) X
Crude oil
Gasoline
Liquefied natural gas (LNG)
Liquefied petroleum gas (LPG)
Natural gas liquids (NGL)
Other refined product (specify)
Other substance (specify)
Pipeline Location Attributes Units Value
Segment length ft 3,200
Closest approach to property line ft 600
Closest approach to usable portion of the school site ft 600
Land use by class location (49 CFR Part 192) Class
Pipeline Attributes
Diameter inches 6
Maximum operating pressure psig 400 (assumed)
Average operating pressure psig 400 (assumed)
Depth of burial ft
Distance to nearest compressor (gas) or pump station (liquid) ft
Throughput
Liquid (enter value, meter, etc.) gpm
Nearest block valve locations, upstream and downstream of segment
of concern
Above ground components within 1500-ft zone
Number
Type
Pipeline location on terrain gradient relative to school
(Designate with an “X” by appropriate description)
Flat X
Up gradient
Down gradient
“Convoluted”
California Department of Education CCR, Title 5, Pipeline Risk Analysis Report Form 2 - Pipeline Risk Analysis Input Data
Date: 5/20/2012
Local Educational Agency: Centinela Valley Union High School District
Proposed School Site Name: Lawndale High School
Proposed School Estimated Population:
Product Designate by
an “X”
Natural gas (NG)
Crude oil X
Gasoline
Liquefied natural gas (LNG)
Liquefied petroleum gas (LPG)
Natural gas liquids (NGL)
Other refined product (specify)
Other substance (specify)
Pipeline Location Attributes Units Value
Segment length ft 2,575
Closest approach to property line ft 600
Closest approach to usable portion of the school site ft 600
Land use by class location (49 CFR Part 192) Class
Pipeline Attributes
Diameter inches 4
Maximum operating pressure psig 400 (assumed)
Average operating pressure psig 400 (assumed)
Depth of burial ft
Distance to nearest compressor (gas) or pump station (liquid) ft
Throughput
Liquid (enter value, meter, etc.) gpm
Nearest block valve locations, upstream and downstream of segment
of concern
Above ground components within 1500-ft zone
Number
Type
Pipeline location on terrain gradient relative to school
(Designate with an “X” by appropriate description)
Flat X
Up gradient
Down gradient
“Convoluted”
California Department of Education CCR, Title 5, Pipeline Risk Analysis Report Form 2 - Pipeline Risk Analysis Input Data
Date: 5/20/2012
Local Educational Agency: Centinela Valley Union High School District
Proposed School Site Name: Lawndale High School
Proposed School Estimated Population:
Product Designate by
an “X”
Natural gas (NG)
Crude oil X
Gasoline
Liquefied natural gas (LNG)
Liquefied petroleum gas (LPG)
Natural gas liquids (NGL)
Other refined product (specify)
Other substance (specify)
Pipeline Location Attributes Units Value
Segment length ft 1,450
Closest approach to property line ft 1,075
Closest approach to usable portion of the school site ft 1,075
Land use by class location (49 CFR Part 192) Class
Pipeline Attributes
Diameter inches 10
Maximum operating pressure psig 400 (assumed)
Average operating pressure psig 400 (assumed)
Depth of burial ft
Distance to nearest compressor (gas) or pump station (liquid) ft
Throughput
Liquid (enter value, meter, etc.) gpm
Nearest block valve locations, upstream and downstream of segment
of concern
Above ground components within 1500-ft zone
Number
Type
Pipeline location on terrain gradient relative to school
(Designate with an “X” by appropriate description)
Flat X
Up gradient
Down gradient
“Convoluted”
California Department of Education CCR, Title 5, Pipeline Risk Analysis Report Form 2 - Pipeline Risk Analysis Input Data
Date: 5/20/2012
Local Educational Agency: Centinela Valley Union High School District
Proposed School Site Name: Lawndale High School
Proposed School Estimated Population:
Product Designate by
an “X”
Natural gas (NG)
Crude oil X
Gasoline
Liquefied natural gas (LNG)
Liquefied petroleum gas (LPG)
Natural gas liquids (NGL)
Other refined product (specify)
Other substance (specify)
Pipeline Location Attributes Units Value
Segment length ft 3,200
Closest approach to property line ft 10
Closest approach to usable portion of the school site ft 10
Land use by class location (49 CFR Part 192) Class
Pipeline Attributes
Diameter inches 12
Maximum operating pressure psig 400 (assumed)
Average operating pressure psig 400 (assumed)
Depth of burial ft
Distance to nearest compressor (gas) or pump station (liquid) ft
Throughput
Liquid (enter value, meter, etc.) gpm
Nearest block valve locations, upstream and downstream of segment
of concern
Above ground components within 1500-ft zone
Number
Type
Pipeline location on terrain gradient relative to school
(Designate with an “X” by appropriate description)
Flat X
Up gradient
Down gradient
“Convoluted”
California Department of Education
CCR, Title 5, Pipeline Risk Analysis Report Form 3 - Standard Protocol Calculation Summary
Release Probability Calculations Variable Value
Data Source if Different from
Protocol
Basic Data Input
Baseline frequency per pipeline mile F0,
releases/ mile-year
Default Historical or default release frequency
from Table 4-3 or Appendix B.
Segment length within 1500-ft buffer SEG, Miles Maps Determine from site maps, GIS, or
other sources
Nearest property line distance R0, ft Maps Determine from maps
Receptor location distance, if different
than nearest property line
R(i), ft Maps Determine from maps
Base release probability P0 Default t) F0(1P0
e
Probability adjustment factor PAF Default Default value selected by analyst
Adjusted base probability PA Default PA = P0 PAF
Special Seismic Considerations Please summarize and/or list below any adjustments made to the Protocol base risk analysis estimates and the
special seismic conditions and studies upon which these adjustments were based.
If adjustments were based upon special seismic conditions, the signature(s) and titles of those professionals
involved are required. Attach additional pages if needed. No adjustments made.
Signatures for Above, If Needed
Printed Name Signature Title Greg Hauser Project Director
Protocol Basis Scenario Probabilities XSEG length, leak, ft:
Leak jet or pool fire Calculated using CDE charts/template.
Leak flash fire Calculated using CDE charts/template.
Leak gas or vapor explosion Calculated using CDE charts/template.
Individual XSEG failure and release
probabilities, leak, PA(LX):
Calculated using CDE charts/template. (Continued on next page.)
Release Probability Calculations Variable Value
Data Source if Different from
Protocol
Leak jet or pool fire Calculated using CDE charts/template.
Leak flash fire Calculated using CDE charts/template.
Leak gas or vapor explosion Calculated using CDE charts/template.
XSEG length, rupture, ft: Calculated using CDE charts/template.
Rupture jet or pool fire Calculated using CDE charts/template.
Rupture flash fire Calculated using CDE charts/template.
Rupture gas or vapor explosion Calculated using CDE charts/template.
Individual XSEG failure and release
probabilities, rupture, PA(RX):
Calculated using CDE charts/template.
Rupture jet or pool fire Calculated using CDE charts/template.
Rupture flash fire Calculated using CDE charts/template.
Rupture gas or vapor explosion Calculated using CDE charts/template.
Insert Protocol default values or exceptions to the Protocol default
values:
(If values other than Protocol default
values were used, indicate the value in the
appropriate cell and indicate the data
source.)
Probability of leak PC(L) Default Default: 0.8
Probability of rupture PC(R) Default Default: 0.2
Probability of leak ignition PC(LIG) Default Default: gas 0.3 (FEMA 1989);
gasoline, 0,09; liquids other than
gasoline (e.g., crude oil): 0.03
Probability of rupture ignition PC(RIG) Default Default: gas 0.45 (FEMA 1989);
gasoline: 0.09; liquids other than
gasoline (e.g., crude oil): 0.03
(Continued on next page)
California Department of Education CCR, Title 5, Pipeline Risk Analysis Report
Form 3 - Standard Protocol Calculation Summary (Continued from previous page)
Release Probability
Calculations Variable Value
Data Source if Different from
Protocol
Insert Protocol default values or exceptions to the Protocol default
values:
(If value other than default used,
indicate value in appropriate column
and indicate data source.)
Probability of fire on ignition PC(FIG) Default Default: gas 0.99 (FEMA 1989); liquid
0.95
Probability of explosion on
ignition
PC(EIG)
Default Default: gas 0.01; liquid 0.05
Probability of flash fire PC(FF) Default Default: gas 0.01; liquid 0.05
Probability of jet fire (gas
pipelines) or pool fire (liquid
pipelines)
PC(JF) Default Default: gas = 0.98; liquid = 0.95
Probability of occupancy PC(OCC) Default Default: 180 days per year, 8 hrs per
day.
Probability of outdoor exposure
PC(OUT) Default Default: 2 hr outdoors during an 8-hour
day onsite.
Probability of leak jet/pool fire
impact
PCI(LJF) Calculated using CDE charts/template.
Probability of rupture jet/pool
fire impact
PCI(RJF) Calculated using CDE charts/template.
Probability of leak flash fire
impact
PCI(LFF) Calculated using CDE charts/template.
Probability of rupture flash fire
impact
PCI(RFF) Calculated using CDE charts/template.
Probability of leak explosion
impact
PCI(LEX) Calculated using CDE charts/template.
Probability of rupture explosion
impact
PCI(REX) Calculated using CDE charts/template.
Individual Risk Summary
Leak jet fire IR IR(LJF) Calculated using CDE charts/template.
Rupture jet fire IR IR(RJF) Calculated using CDE charts/template.
Leak flash fire IR IR(LFF) Calculated using CDE charts/template.
Rupture flash fire IR IR(RFF) Calculated using CDE charts/template.
Leak explosion IR IR(LEX) Calculated using CDE charts/template.
Rupture explosion IR IR(REX) Calculated using CDE charts/template.
Total IR and IRC Total Individual Risk 1.5E-07
CDE Individual Risk Criterion 1.0E-06
Check shaded boxes as follows:
If TIF / IRC > 1.0 “Significant”
If TIF / IRC < =1.0 X “Insignificant”
IR and Population Risk Indicators IR Indicator 0.25
Population Risk Indicator
California Department of Education
CCR, Title 5, Pipeline Risk Analysis Report Form 4 - Alternative Calculations Summary
School Site: Lawndale High School
Listing of Attached Alternative Documentation: None.
California Department of Education
CCR, Title 5, Pipeline Risk Analysis Report Form 5 - Supplementary Documentation
School Site: Lawndale High School
Listing of Attached Supplementary Documentation:
See CDE template calculations in Appendix B of the full Pipeline Safety Hazard Assessment (PSHA).
Assumed 400 psig pressure for the gas and crude oil lines.
Estimated the crude oil liquid pool diameters using similar parameters as for the high volume water line (e.g.
release velocity, time to shut-off, pool depth.
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental Risk Calculations
APPENDIX B
RISK CALCULATIONS
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental B-1 Risk Calculations
EXXON MOBIL 6 INCH GAS PIPELINE
.
Workbook: TIR CALCS 3.07
Sheet: Title
California Department of Education
PIPELINE RISK ANALYSIS PROTOCOL TOTAL INDIVIDUAL RISK (TIR) ESTIMATING AID
To be used in conjunction with the CDE Guidance Protocol for School
To be used in conjunction with the CDE Guidance Protocol for School
Site Pipeline Risk Analysis
March 2007
CDE provides this template for the convenience of Protocol users as a template. It is the responsibility of the user to ensure that calculations match and are appropriate for CDE provides this template for the convenience of Protocol users as a template. It is
the responsibility of the user to ensure that calculations match and are appropriate for the risk analysis being conducted for a particular case. While both CDE and its
contractor have sought to make this spreadsheet free of errors there is no expressed or implied warranty to that it is so.
Workbook: TIR CALCS 3.07
Sheet: Title
General Instructions
1. This spreadsheet can be used in conjunction with the Protocol to estimate the individual risk. It is set up in simple form with direct data entry for a given case in designated cells. Other cells contain the calculations and default data that would only be changed if alternative sources of data eventually replace those used as the standard Protocol values.
2. The spreadsheet contains several individual worksheets in addition to these instructions:
Workbook: TIR CALCS 3.07
Sheet: General Instructions
standard Protocol values.
2. The spreadsheet contains several individual worksheets in addition to these instructions:
3. Variable List identifies the names of the variables used. It matches the names used in the protocol document.
4. XSEG Calculations calculates the individual hazard segment lengths.
5. TIR1 calculates the IR for the closest of four locations along the centerline of the impacts from a release from the hazard source point on the pipeline. This is the location that corresponds to the property line location closest to the pipeline. It is the receptor location currently designated by CDE as the location for calculating the
5. TIR1 calculates the IR for the closest of four locations along the centerline of the impacts from a release from the hazard source point on the pipeline. This is the location that corresponds to the property line location closest to the pipeline. It is the receptor location currently designated by CDE as the location for calculating the IR value that is compared with the CDE IR Criterion.
6. TIR2, TIR3, TIR4, are for calculating alternative receptor locations used along with the TIR1 in the TIR Index and Population Indicator calculations described in Chapter 4 of the Protocol.
7. Instructions for each of the worksheets are provided in the worksheets.
Workbook: TIR CALCS 3.07
Sheet: General Instructions
Pipe
Size Press.
Hazard
X
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
(in) (psig) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft)
End Zone 3 -Back
Property Line
XSEG CalculationsPipe Size,
Pressure, and
Hazard Type
Front Property
Line - Begin Zone
1
Begin Zone 2 Begin Zone 3
Workbook: TIR CALCS 3.07
Sheet: XSEG Calculations
6 400 LJF 33 600 0 33 740 0 33 880 0 33 1020 0
6 400 RJF 90 600 0 90 740 0 90 880 0 90 1020 0
6 400 LFF 110 600 0 110 740 0 110 880 0 110 1020 0
6 400 RFF 900 600 1342 900 740 1024 900 880 377 900 1020 0
6 400 LEX 0 600 0 0 740 0 0 880 0 0 1020 0
6 400 REX 0 600 0 0 740 0 0 880 0 0 1020 0
Green cells indicate where input data are entered for the case being analyzed.
The numbers shown apply for a the specific example illustrated. Substitute the appropriate values for the actual number being analyzed.
The Pipe Size is the pipe diameter in inches. The Pressure is the operating pressure in punds per square inch gage (psig).
Hazard acronyms are defined in the Protocol.
square inch gage (psig).
Hazard acronyms are defined in the Protocol.
The 1% mortality (0.01) probability impact distance RX for each hazard is obtained from the appropriate hazard figure in the Protocol, Chapter 4.
R0 is the receptor distance being analyzed and is explained in the Protocol, Chapter 4.
XSEG is as described in the Protocol, Chapter 4.
Zones 1, 2, and 3 are defined in the Protocol, Chapter 4 for use in the TIR calculations. If more than
XSEG is as described in the Protocol, Chapter 4.
Zones 1, 2, and 3 are defined in the Protocol, Chapter 4 for use in the TIR calculations. If more than three zones are used, as explained in the Protocol, Section 4, more worksheets of the same type as shown can be added.
Workbook: TIR CALCS 3.07
Sheet: XSEG Calculations
VARIABLES LIST
Green cells indicate data entry cells. DATA SOURCE or DEFAULT VALUE
Product Phase I EA, etc.
Diameter Phase I EA, etc.
Pressure Phase I EA, etc.
R0 Site Map or Field Data
XSEG(LJF) Protocol Calculation
XSEG(RJF) Protocol Calculation
XSEG(LFF) Protocol Calculation
XSEG(RFF) Protocol Calculation
XSEG(LEX) Protocol Calculation
XSEG(REX) Protocol Calculation
F0 Protocol Table
P0 Protocol Table
PAF User data
PA Protocol Calculation
P(FF) Protocol Calculation
P(JF) Protocol Calculation
P(EX) Protocol Calculation
PC(L) 0.8
PC(LIG) 0.3
PC(FIG) 0.99
PC(JF) 0.98
PC(FF) 0.01
PC(EIG) 0.01
PC(R) 0.2
PC(RIG) 0.45
PC(FIG) 0.99
PC(JF) 0.98
PC(FF) 0.01
PC(EIG) 0.01
PCI(LJF) Protocol Calculation
PCI(RJF) Protocol Calculation
PCI(LFF) Protocol Calculation
PCI(RFF) Protocol Calculation
PCI(LEX) Protocol Calculation
PCI(REX) Protocol Calculation
PF(LJF) Protocol Calculation
PF(RJF) Protocol Calculation
PF(LFF) Protocol Calculation
PF(RFF) Protocol Calculation
PF(LEX) Protocol Calculation
PF(REX) Protocol Calculation
Base and Conditional Probability Calculations Data
Input Data
Maximum Fatality Probability for XSEG
Base Probabilities
Leak Conditional Probabilities
Rupture Conditional Probabilities
Conditional Probability of Impacts
Workbook: TIR CALCS 3.07
Sheet: Variables List
TIR CALCULATIONS - BEGIN ZONE 1 - FRONT PROPERTY LINE
Green cells indicate data entry cells.
Product natural gas
Diameter 6 inches
Pressure 400 psig
R0 600 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
Input Data 1. These instruction boxes apply to Worksheets TIR1, 2, 3, and 4. 2. Enter the Input Data indicated for the case under analysis. 3. Enter the XSEG values from Worksheet "XSEG Calculations".4. In the table below enter the F0 data for the appropriate type pf pipeline from the failure frequency data in the Protocol, Chapter 4.
Workbook:TIR CALCS 3.07
Sheet: TIR1
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 1342 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 1.2E-04 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 1.2E-04 PC(LIG) 0.3 PC(RIG) 0.45 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.99 PC(FIG) 0.99
PA 1.2E-04 PC(JF) 0.98 PC(JF) 0.98
Leak Rupture Exposure
Base and Conditional Probability CalculationsBase
for the appropriate type pf pipeline from the failure frequency data in the Protocol, Chapter 4. 5.Enter a value for the other green cell variables as explained in Chapter 4.
PA 1.2E-04 PC(JF) 0.98 PC(JF) 0.98
PC(FF) 0.01 PC(FF) 0.01
PC(EIG) 0.01 PC(EIG) 0.01
Calculated Values:
PA(LJF) 0.0E+00 PCI(LJF) 0.233 PCI(RJF) 0.087
PA(RJF) 0.0E+00 PCI(LFF) 0.002 PCI(RFF) 0.001
PA(LFF) 0.0E+00 PCI(LEX) 0.002 PCI(REX) 0.001 PC(EXPO) 0.04
PA(RFF) 3.0E-05
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.23 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.09 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.002 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 3.0E-05 0.001 0.040 1.1E-09
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.002 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.001 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
Impact Probability Calculations
Probability Term Values
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR CalculationMAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.00E+00
IR(LFF) = 1.00 0.0E+00 0.00E+00
IR(RFF) = 1.00 1.1E-09 1.09E-09
IR(LEX) = 1.00 0.0E+00 0.00E+00
IR(REX) = 1.00 0.0E+00 0.00E+00
6. Enter the maximum fatality probability that corresponds to the maximum impact for each hazard type according to the Protocol, Chapter 4.
IR(REX) = 1.00 0.0E+00 0.00E+00
1.1E-09
1.0E-06
0.00
0.51PROTOCOL TIR INDICATOR RATIO
CDE INDIVIDUAL RISK CRITERION, IRC
TIR/IRC RATIO
TOTAL INDIVIDUAL RISK, TIR
Workbook:TIR CALCS 3.07
Sheet: TIR1
TIR CALCULATIONS - END ZONE 1 - BEGIN ZONE 2
Green cells indicate data entry cells.
Input Data
Product natural gas
Diameter 6 inches
Pressure 400 psig
R0 740 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 1024 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 1.2E-04 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 1.2E-04 PC(LIG) 0.3 PC(RIG) 0.45 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.99 PC(FIG) 0.99
PA 1.2E-04 PC(JF) 0.98 PC(JF) 0.98
PC(FF) 0.01 PC(FF) 0.01
PC(EIG) 0.01 PC(EIG) 0.01
PA(LJF) 0.0E+00 PCI(LJF) 0.233 PCI(RJF) 0.087
PA(RJF) 0.0E+00 PCI(LFF) 0.002 PCI(RFF) 0.001
PA(LFF) 0.0E+00 PCI(LEX) 0.002 PCI(REX) 0.001 PC(EXPO) 0.04
PA(RFF) 2.3E-05
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.23 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.09 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.002 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 2.3E-05 0.001 0.040 8.3E-10
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.002 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.001 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR Calculation
MAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 8.3E-10 8.3E-10
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR2 = 8.3E-10
Base and Conditional Probability Calculations
Impact Probability Calculations
Probability Term Values
Exposure Base Leak Rupture
Workbook: TIR CALCS 3.07
Sheet: TIR2
TIR CALCULATIONS - END ZONE 2 - BEGIN ZONE 3
Green cells indicate data entry cells.
Product natural gas
Diameter 6 inches
Pressure 400 psig
R0 880 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 377 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 1.2E-04 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 1.2E-04 PC(LIG) 0.3 PC(RIG) 0.45 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.99 PC(FIG) 0.99
PA 1.2E-04 PC(JF) 0.98 PC(JF) 0.98
PC(FF) 0.01 PC(FF) 0.01
PC(EIG) 0.01 PC(EIG) 0.01
PA(LJF) 0.0E+00 PCI(LJF) 0.233 PCI(RJF) 0.087
PA(RJF) 0.0E+00 PCI(LFF) 0.002 PCI(RFF) 0.001
PA(LFF) 0.0E+00 PCI(LEX) 0.002 PCI(REX) 0.001 PC(EXPO) 0.04
PA(RFF) 8.6E-06
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.23 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.09 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.002 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 8.6E-06 0.001 0.040 3.1E-10
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.002 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.001 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR Calculation
MAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 3.1E-10 3.1E-10
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR3 = 3.1E-10
Rupture Exposure
Input Data
Base and Conditional Probability Calculations
Impact Probability Calculations
Probability Term Values
Base Leak
Workbook: TIR CALCS 3.07
Sheet: TIR3
TIR CALCULATIONS - END ZONE 3 - BACK PROPERTY LINE
Green cells indicate data entry cells.
Product natural gas
Diameter 6 inches
Pressure 400 psig
R0 1020 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 1.2E-04 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 1.2E-04 PC(LIG) 0.3 PC(RIG) 0.45 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.99 PC(FIG) 0.99
PA 1.2E-04 PC(JF) 0.98 PC(JF) 0.98
PC(FF) 0.01 PC(FF) 0.01
PC(EIG) 0.01 PC(EIG) 0.01
PA(LJF) 0.0E+00 PCI(LJF) 0.233 PCI(RJF) 0.087
PA(RJF) 0.0E+00 PCI(LFF) 0.002 PCI(RFF) 0.001
PA(LFF) 0.0E+00 PCI(LEX) 0.002 PCI(REX) 0.001 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.23 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.09 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.002 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.001 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.002 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.001 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR CalculationMAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR4 = 0.0E+00
Rupture Exposure
Probability Term Values
Input Data
Base and Conditional Probability Calculations
Impact Probability Calculations
Base Leak
Workbook: TIR CALCS 3.07
Sheet: TIR4
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental B-2 Risk Calculations
EXXON MOBIL 4 INCH CRUDE OIL PIPELINE
.
Workbook: TIR CALCS 3.07
Sheet: Title
California Department of Education
PIPELINE RISK ANALYSIS PROTOCOL TOTAL INDIVIDUAL RISK (TIR) ESTIMATING AID
To be used in conjunction with the CDE Guidance Protocol for School
To be used in conjunction with the CDE Guidance Protocol for School
Site Pipeline Risk Analysis
March 2007
CDE provides this template for the convenience of Protocol users as a template. It is the responsibility of the user to ensure that calculations match and are appropriate for CDE provides this template for the convenience of Protocol users as a template. It is
the responsibility of the user to ensure that calculations match and are appropriate for the risk analysis being conducted for a particular case. While both CDE and its
contractor have sought to make this spreadsheet free of errors there is no expressed or implied warranty to that it is so.
Workbook: TIR CALCS 3.07
Sheet: Title
General Instructions
1. This spreadsheet can be used in conjunction with the Protocol to estimate the individual risk. It is set up in simple form with direct data entry for a given case in designated cells. Other cells contain the calculations and default data that would only be changed if alternative sources of data eventually replace those used as the standard Protocol values.
2. The spreadsheet contains several individual worksheets in addition to these instructions:
Workbook: TIR CALCS 3.07
Sheet: General Instructions
standard Protocol values.
2. The spreadsheet contains several individual worksheets in addition to these instructions:
3. Variable List identifies the names of the variables used. It matches the names used in the protocol document.
4. XSEG Calculations calculates the individual hazard segment lengths.
5. TIR1 calculates the IR for the closest of four locations along the centerline of the impacts from a release from the hazard source point on the pipeline. This is the location that corresponds to the property line location closest to the pipeline. It is the receptor location currently designated by CDE as the location for calculating the
5. TIR1 calculates the IR for the closest of four locations along the centerline of the impacts from a release from the hazard source point on the pipeline. This is the location that corresponds to the property line location closest to the pipeline. It is the receptor location currently designated by CDE as the location for calculating the IR value that is compared with the CDE IR Criterion.
6. TIR2, TIR3, TIR4, are for calculating alternative receptor locations used along with the TIR1 in the TIR Index and Population Indicator calculations described in Chapter 4 of the Protocol.
7. Instructions for each of the worksheets are provided in the worksheets.
Workbook: TIR CALCS 3.07
Sheet: General Instructions
Pipe
Size Press.
Hazard
X
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
(in) (psig) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft)
End Zone 3 -Back
Property Line
XSEG CalculationsPipe Size,
Pressure, and
Hazard Type
Front Property
Line - Begin Zone
1
Begin Zone 2 Begin Zone 3
Workbook: TIR CALCS 3.07
Sheet: XSEG Calculations
4 400 LJF 60 600 0 60 740 0 60 880 0 60 1020 0
4 400 RJF 60 600 0 60 740 0 60 880 0 60 1020 0
4 400 LFF 5 600 0 5 740 0 5 880 0 5 1020 0
4 400 RFF 10 600 0 10 740 0 10 880 0 10 1020 0
4 400 LEX 0 600 0 0 740 0 0 880 0 0 1020 0
4 400 REX 0 600 0 0 740 0 0 880 0 0 1020 0
Green cells indicate where input data are entered for the case being analyzed.
The numbers shown apply for a the specific example illustrated. Substitute the appropriate values for the actual number being analyzed.
The Pipe Size is the pipe diameter in inches. The Pressure is the operating pressure in punds per square inch gage (psig).
Hazard acronyms are defined in the Protocol.
square inch gage (psig).
Hazard acronyms are defined in the Protocol.
The 1% mortality (0.01) probability impact distance RX for each hazard is obtained from the appropriate hazard figure in the Protocol, Chapter 4.
R0 is the receptor distance being analyzed and is explained in the Protocol, Chapter 4.
XSEG is as described in the Protocol, Chapter 4.
Zones 1, 2, and 3 are defined in the Protocol, Chapter 4 for use in the TIR calculations. If more than
XSEG is as described in the Protocol, Chapter 4.
Zones 1, 2, and 3 are defined in the Protocol, Chapter 4 for use in the TIR calculations. If more than three zones are used, as explained in the Protocol, Section 4, more worksheets of the same type as shown can be added.
Workbook: TIR CALCS 3.07
Sheet: XSEG Calculations
VARIABLES LIST
Green cells indicate data entry cells. DATA SOURCE or DEFAULT VALUE
Product Phase I EA, etc.
Diameter Phase I EA, etc.
Pressure Phase I EA, etc.
R0 Site Map or Field Data
XSEG(LJF) Protocol Calculation
XSEG(RJF) Protocol Calculation
XSEG(LFF) Protocol Calculation
XSEG(RFF) Protocol Calculation
XSEG(LEX) Protocol Calculation
XSEG(REX) Protocol Calculation
F0 Protocol Table
P0 Protocol Table
PAF User data
PA Protocol Calculation
P(FF) Protocol Calculation
P(JF) Protocol Calculation
P(EX) Protocol Calculation
PC(L) 0.8
PC(LIG) 0.09
PC(FIG) 0.95
PC(JF) 0.95
PC(FF) 0.05
PC(EIG) 0.05
PC(R) 0.2
PC(RIG) 0.03
PC(FIG) 0.95
PC(JF) 0.95
PC(FF) 0.05
PC(EIG) 0.05
PCI(LJF) Protocol Calculation
PCI(RJF) Protocol Calculation
PCI(LFF) Protocol Calculation
PCI(RFF) Protocol Calculation
PCI(LEX) Protocol Calculation
PCI(REX) Protocol Calculation
PF(LJF) Protocol Calculation
PF(RJF) Protocol Calculation
PF(LFF) Protocol Calculation
PF(RFF) Protocol Calculation
PF(LEX) Protocol Calculation
PF(REX) Protocol Calculation
Base and Conditional Probability Calculations Data
Input Data
Maximum Fatality Probability for XSEG
Base Probabilities
Leak Conditional Probabilities
Rupture Conditional Probabilities
Conditional Probability of Impacts
Workbook: TIR CALCS 3.07
Sheet: Variables List
TIR CALCULATIONS - BEGIN ZONE 1 - FRONT PROPERTY LINE
Green cells indicate data entry cells.
Product crude oil
Diameter 4 inches
Pressure 400 psig
R0 600 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
Input Data 1. These instruction boxes apply to Worksheets TIR1, 2, 3, and 4. 2. Enter the Input Data indicated for the case under analysis. 3. Enter the XSEG values from Worksheet "XSEG Calculations".4. In the table below enter the F0 data for the appropriate type pf pipeline from the failure frequency data in the Protocol, Chapter 4.
Workbook:TIR CALCS 3.07
Sheet: TIR1
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
Leak Rupture Exposure
Base and Conditional Probability CalculationsBase
for the appropriate type pf pipeline from the failure frequency data in the Protocol, Chapter 4. 5.Enter a value for the other green cell variables as explained in Chapter 4.
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
Calculated Values:
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
Impact Probability Calculations
Probability Term Values
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR CalculationMAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.00E+00
IR(LFF) = 1.00 0.0E+00 0.00E+00
IR(RFF) = 1.00 0.0E+00 0.00E+00
IR(LEX) = 1.00 0.0E+00 0.00E+00
IR(REX) = 1.00 0.0E+00 0.00E+00
6. Enter the maximum fatality probability that corresponds to the maximum impact for each hazard type according to the Protocol, Chapter 4.
IR(REX) = 1.00 0.0E+00 0.00E+00
0.0E+00
1.0E-06
0.00
#DIV/0!PROTOCOL TIR INDICATOR RATIO
CDE INDIVIDUAL RISK CRITERION, IRC
TIR/IRC RATIO
TOTAL INDIVIDUAL RISK, TIR
Workbook:TIR CALCS 3.07
Sheet: TIR1
TIR CALCULATIONS - END ZONE 1 - BEGIN ZONE 2
Green cells indicate data entry cells.
Input Data
Product crude oil
Diameter 4 inches
Pressure 400 psig
R0 740 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR Calculation
MAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR2 = 0.0E+00
Base and Conditional Probability Calculations
Impact Probability Calculations
Probability Term Values
Exposure Base Leak Rupture
Workbook: TIR CALCS 3.07
Sheet: TIR2
TIR CALCULATIONS - END ZONE 2 - BEGIN ZONE 3
Green cells indicate data entry cells.
Product crude oil
Diameter 4 inches
Pressure 400 psig
R0 880 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR Calculation
MAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR3 = 0.0E+00
Base Leak Rupture Exposure
Input Data
Base and Conditional Probability Calculations
Impact Probability Calculations
Probability Term Values
Workbook: TIR CALCS 3.07
Sheet: TIR3
TIR CALCULATIONS - END ZONE 3 - BACK PROPERTY LINE
Green cells indicate data entry cells.
Product crude oil
Diameter 4 inches
Pressure 400 psig
R0 1020 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR CalculationMAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR4 = 0.0E+00
Probability Term Values
Input Data
Base and Conditional Probability Calculations
Impact Probability Calculations
Base Leak Rupture Exposure
Workbook: TIR CALCS 3.07
Sheet: TIR4
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental B-3 Risk Calculations
EXXON MOBIL 10 INCH CRUDE OIL PIPELINE
.
Workbook: TIR CALCS 3.07
Sheet: Title
California Department of Education
PIPELINE RISK ANALYSIS PROTOCOL TOTAL INDIVIDUAL RISK (TIR) ESTIMATING AID
To be used in conjunction with the CDE Guidance Protocol for School
To be used in conjunction with the CDE Guidance Protocol for School
Site Pipeline Risk Analysis
March 2007
CDE provides this template for the convenience of Protocol users as a template. It is the responsibility of the user to ensure that calculations match and are appropriate for CDE provides this template for the convenience of Protocol users as a template. It is
the responsibility of the user to ensure that calculations match and are appropriate for the risk analysis being conducted for a particular case. While both CDE and its
contractor have sought to make this spreadsheet free of errors there is no expressed or implied warranty to that it is so.
Workbook: TIR CALCS 3.07
Sheet: Title
General Instructions
1. This spreadsheet can be used in conjunction with the Protocol to estimate the individual risk. It is set up in simple form with direct data entry for a given case in designated cells. Other cells contain the calculations and default data that would only be changed if alternative sources of data eventually replace those used as the standard Protocol values.
2. The spreadsheet contains several individual worksheets in addition to these instructions:
Workbook: TIR CALCS 3.07
Sheet: General Instructions
standard Protocol values.
2. The spreadsheet contains several individual worksheets in addition to these instructions:
3. Variable List identifies the names of the variables used. It matches the names used in the protocol document.
4. XSEG Calculations calculates the individual hazard segment lengths.
5. TIR1 calculates the IR for the closest of four locations along the centerline of the impacts from a release from the hazard source point on the pipeline. This is the location that corresponds to the property line location closest to the pipeline. It is the receptor location currently designated by CDE as the location for calculating the
5. TIR1 calculates the IR for the closest of four locations along the centerline of the impacts from a release from the hazard source point on the pipeline. This is the location that corresponds to the property line location closest to the pipeline. It is the receptor location currently designated by CDE as the location for calculating the IR value that is compared with the CDE IR Criterion.
6. TIR2, TIR3, TIR4, are for calculating alternative receptor locations used along with the TIR1 in the TIR Index and Population Indicator calculations described in Chapter 4 of the Protocol.
7. Instructions for each of the worksheets are provided in the worksheets.
Workbook: TIR CALCS 3.07
Sheet: General Instructions
Pipe
Size Press.
Hazard
X
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
(in) (psig) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft)
End Zone 3 -Back
Property Line
XSEG CalculationsPipe Size,
Pressure, and
Hazard Type
Front Property
Line - Begin Zone
1
Begin Zone 2 Begin Zone 3
Workbook: TIR CALCS 3.07
Sheet: XSEG Calculations
10 400 LJF 60 1075 0 60 1215 0 60 1355 0 60 1495 0
10 400 RJF 80 1075 0 80 1215 0 80 1355 0 80 1495 0
10 400 LFF 5 1075 0 5 1215 0 5 1355 0 5 1495 0
10 400 RFF 10 1075 0 10 1215 0 10 1355 0 10 1495 0
10 400 LEX 0 1075 0 0 1215 0 0 1355 0 0 1495 0
10 400 REX 0 1075 0 0 1215 0 0 1355 0 0 1495 0
Green cells indicate where input data are entered for the case being analyzed.
The numbers shown apply for a the specific example illustrated. Substitute the appropriate values for the actual number being analyzed.
The Pipe Size is the pipe diameter in inches. The Pressure is the operating pressure in punds per square inch gage (psig).
Hazard acronyms are defined in the Protocol.
square inch gage (psig).
Hazard acronyms are defined in the Protocol.
The 1% mortality (0.01) probability impact distance RX for each hazard is obtained from the appropriate hazard figure in the Protocol, Chapter 4.
R0 is the receptor distance being analyzed and is explained in the Protocol, Chapter 4.
XSEG is as described in the Protocol, Chapter 4.
Zones 1, 2, and 3 are defined in the Protocol, Chapter 4 for use in the TIR calculations. If more than
XSEG is as described in the Protocol, Chapter 4.
Zones 1, 2, and 3 are defined in the Protocol, Chapter 4 for use in the TIR calculations. If more than three zones are used, as explained in the Protocol, Section 4, more worksheets of the same type as shown can be added.
Workbook: TIR CALCS 3.07
Sheet: XSEG Calculations
VARIABLES LIST
Green cells indicate data entry cells. DATA SOURCE or DEFAULT VALUE
Product Phase I EA, etc.
Diameter Phase I EA, etc.
Pressure Phase I EA, etc.
R0 Site Map or Field Data
XSEG(LJF) Protocol Calculation
XSEG(RJF) Protocol Calculation
XSEG(LFF) Protocol Calculation
XSEG(RFF) Protocol Calculation
XSEG(LEX) Protocol Calculation
XSEG(REX) Protocol Calculation
F0 Protocol Table
P0 Protocol Table
PAF User data
PA Protocol Calculation
P(FF) Protocol Calculation
P(JF) Protocol Calculation
P(EX) Protocol Calculation
PC(L) 0.8
PC(LIG) 0.09
PC(FIG) 0.95
PC(JF) 0.95
PC(FF) 0.05
PC(EIG) 0.05
PC(R) 0.2
PC(RIG) 0.03
PC(FIG) 0.95
PC(JF) 0.95
PC(FF) 0.05
PC(EIG) 0.05
PCI(LJF) Protocol Calculation
PCI(RJF) Protocol Calculation
PCI(LFF) Protocol Calculation
PCI(RFF) Protocol Calculation
PCI(LEX) Protocol Calculation
PCI(REX) Protocol Calculation
PF(LJF) Protocol Calculation
PF(RJF) Protocol Calculation
PF(LFF) Protocol Calculation
PF(RFF) Protocol Calculation
PF(LEX) Protocol Calculation
PF(REX) Protocol Calculation
Base and Conditional Probability Calculations Data
Input Data
Maximum Fatality Probability for XSEG
Base Probabilities
Leak Conditional Probabilities
Rupture Conditional Probabilities
Conditional Probability of Impacts
Workbook: TIR CALCS 3.07
Sheet: Variables List
TIR CALCULATIONS - BEGIN ZONE 1 - FRONT PROPERTY LINE
Green cells indicate data entry cells.
Product crude oil
Diameter 10 inches
Pressure 400 psig
R0 1075 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
Input Data 1. These instruction boxes apply to Worksheets TIR1, 2, 3, and 4. 2. Enter the Input Data indicated for the case under analysis. 3. Enter the XSEG values from Worksheet "XSEG Calculations".4. In the table below enter the F0 data for the appropriate type pf pipeline from the failure frequency data in the Protocol, Chapter 4.
Workbook:TIR CALCS 3.07
Sheet: TIR1
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
Leak Rupture Exposure
Base and Conditional Probability CalculationsBase
for the appropriate type pf pipeline from the failure frequency data in the Protocol, Chapter 4. 5.Enter a value for the other green cell variables as explained in Chapter 4.
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
Calculated Values:
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
Probability Term Values
Impact Probability Calculations
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR CalculationMAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.00E+00
IR(LFF) = 1.00 0.0E+00 0.00E+00
IR(RFF) = 1.00 0.0E+00 0.00E+00
IR(LEX) = 1.00 0.0E+00 0.00E+00
IR(REX) = 1.00 0.0E+00 0.00E+00
6. Enter the maximum fatality probability that corresponds to the maximum impact for each hazard type according to the Protocol, Chapter 4.
IR(REX) = 1.00 0.0E+00 0.00E+00
0.0E+00
1.0E-06
0.00
#DIV/0!PROTOCOL TIR INDICATOR RATIO
CDE INDIVIDUAL RISK CRITERION, IRC
TIR/IRC RATIO
TOTAL INDIVIDUAL RISK, TIR
Workbook:TIR CALCS 3.07
Sheet: TIR1
TIR CALCULATIONS - END ZONE 1 - BEGIN ZONE 2
Green cells indicate data entry cells.
Input Data
Product crude oil
Diameter 10 inches
Pressure 400 psig
R0 1215 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR Calculation
MAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR2 = 0.0E+00
Base and Conditional Probability Calculations
Impact Probability Calculations
Probability Term Values
Exposure Base Leak Rupture
Workbook: TIR CALCS 3.07
Sheet: TIR2
TIR CALCULATIONS - END ZONE 2 - BEGIN ZONE 3
Green cells indicate data entry cells.
Product crude oil
Diameter 10 inches
Pressure 400 psig
R0 1355 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR Calculation
MAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR3 = 0.0E+00
Input Data
Base and Conditional Probability Calculations
Impact Probability Calculations
Probability Term Values
Base Leak Rupture Exposure
Workbook: TIR CALCS 3.07
Sheet: TIR3
TIR CALCULATIONS - END ZONE 3 - BACK PROPERTY LINE
Green cells indicate data entry cells.
Product crude oil
Diameter 10 inches
Pressure 400 psig
R0 1495 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR CalculationMAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR4 = 0.0E+00
Exposure
Probability Term Values
Input Data
Base and Conditional Probability Calculations
Impact Probability Calculations
Base Leak Rupture
Workbook: TIR CALCS 3.07
Sheet: TIR4
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental B-4 Risk Calculations
CRIMSON 12 INCH CRUDE OIL PIPELINE
.
Workbook: TIR CALCS 3.07
Sheet: Title
California Department of Education
PIPELINE RISK ANALYSIS PROTOCOL TOTAL INDIVIDUAL RISK (TIR) ESTIMATING AID
To be used in conjunction with the CDE Guidance Protocol for School
To be used in conjunction with the CDE Guidance Protocol for School
Site Pipeline Risk Analysis
March 2007
CDE provides this template for the convenience of Protocol users as a template. It is the responsibility of the user to ensure that calculations match and are appropriate for CDE provides this template for the convenience of Protocol users as a template. It is
the responsibility of the user to ensure that calculations match and are appropriate for the risk analysis being conducted for a particular case. While both CDE and its
contractor have sought to make this spreadsheet free of errors there is no expressed or implied warranty to that it is so.
Workbook: TIR CALCS 3.07
Sheet: Title
General Instructions
1. This spreadsheet can be used in conjunction with the Protocol to estimate the individual risk. It is set up in simple form with direct data entry for a given case in designated cells. Other cells contain the calculations and default data that would only be changed if alternative sources of data eventually replace those used as the standard Protocol values.
2. The spreadsheet contains several individual worksheets in addition to these instructions:
Workbook: TIR CALCS 3.07
Sheet: General Instructions
standard Protocol values.
2. The spreadsheet contains several individual worksheets in addition to these instructions:
3. Variable List identifies the names of the variables used. It matches the names used in the protocol document.
4. XSEG Calculations calculates the individual hazard segment lengths.
5. TIR1 calculates the IR for the closest of four locations along the centerline of the impacts from a release from the hazard source point on the pipeline. This is the location that corresponds to the property line location closest to the pipeline. It is the receptor location currently designated by CDE as the location for calculating the
5. TIR1 calculates the IR for the closest of four locations along the centerline of the impacts from a release from the hazard source point on the pipeline. This is the location that corresponds to the property line location closest to the pipeline. It is the receptor location currently designated by CDE as the location for calculating the IR value that is compared with the CDE IR Criterion.
6. TIR2, TIR3, TIR4, are for calculating alternative receptor locations used along with the TIR1 in the TIR Index and Population Indicator calculations described in Chapter 4 of the Protocol.
7. Instructions for each of the worksheets are provided in the worksheets.
Workbook: TIR CALCS 3.07
Sheet: General Instructions
Pipe
Size Press.
Hazard
X
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
RX
(1%) R0 XSEG
(in) (psig) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (ft)
End Zone 3 -Back
Property Line
XSEG CalculationsPipe Size,
Pressure, and
Hazard Type
Front Property
Line - Begin Zone
1
Begin Zone 2 Begin Zone 3
Workbook: TIR CALCS 3.07
Sheet: XSEG Calculations
12 400 LJF 60 10 118 60 150 0 60 290 0 60 430 0
12 400 RJF 110 10 219 110 150 0 110 290 0 110 430 0
12 400 LFF 10 10 0 10 150 0 10 290 0 10 430 0
12 400 RFF 15 10 22 15 150 0 15 290 0 15 430 0
12 400 LEX 0 10 0 0 150 0 0 290 0 0 430 0
12 400 REX 0 10 0 0 150 0 0 290 0 0 430 0
Green cells indicate where input data are entered for the case being analyzed.
The numbers shown apply for a the specific example illustrated. Substitute the appropriate values for the actual number being analyzed.
The Pipe Size is the pipe diameter in inches. The Pressure is the operating pressure in punds per square inch gage (psig).
Hazard acronyms are defined in the Protocol.
square inch gage (psig).
Hazard acronyms are defined in the Protocol.
The 1% mortality (0.01) probability impact distance RX for each hazard is obtained from the appropriate hazard figure in the Protocol, Chapter 4.
R0 is the receptor distance being analyzed and is explained in the Protocol, Chapter 4.
XSEG is as described in the Protocol, Chapter 4.
Zones 1, 2, and 3 are defined in the Protocol, Chapter 4 for use in the TIR calculations. If more than
XSEG is as described in the Protocol, Chapter 4.
Zones 1, 2, and 3 are defined in the Protocol, Chapter 4 for use in the TIR calculations. If more than three zones are used, as explained in the Protocol, Section 4, more worksheets of the same type as shown can be added.
Workbook: TIR CALCS 3.07
Sheet: XSEG Calculations
VARIABLES LIST
Green cells indicate data entry cells. DATA SOURCE or DEFAULT VALUE
Product Phase I EA, etc.
Diameter Phase I EA, etc.
Pressure Phase I EA, etc.
R0 Site Map or Field Data
XSEG(LJF) Protocol Calculation
XSEG(RJF) Protocol Calculation
XSEG(LFF) Protocol Calculation
XSEG(RFF) Protocol Calculation
XSEG(LEX) Protocol Calculation
XSEG(REX) Protocol Calculation
F0 Protocol Table
P0 Protocol Table
PAF User data
PA Protocol Calculation
P(FF) Protocol Calculation
P(JF) Protocol Calculation
P(EX) Protocol Calculation
PC(L) 0.8
PC(LIG) 0.09
PC(FIG) 0.95
PC(JF) 0.95
PC(FF) 0.05
PC(EIG) 0.05
PC(R) 0.2
PC(RIG) 0.03
PC(FIG) 0.95
PC(JF) 0.95
PC(FF) 0.05
PC(EIG) 0.05
PCI(LJF) Protocol Calculation
PCI(RJF) Protocol Calculation
PCI(LFF) Protocol Calculation
PCI(RFF) Protocol Calculation
PCI(LEX) Protocol Calculation
PCI(REX) Protocol Calculation
PF(LJF) Protocol Calculation
PF(RJF) Protocol Calculation
PF(LFF) Protocol Calculation
PF(RFF) Protocol Calculation
PF(LEX) Protocol Calculation
PF(REX) Protocol Calculation
Base and Conditional Probability Calculations Data
Input Data
Maximum Fatality Probability for XSEG
Base Probabilities
Leak Conditional Probabilities
Rupture Conditional Probabilities
Conditional Probability of Impacts
Workbook: TIR CALCS 3.07
Sheet: Variables List
TIR CALCULATIONS - BEGIN ZONE 1 - FRONT PROPERTY LINE
Green cells indicate data entry cells.
Product crude oil
Diameter 12 inches
Pressure 400 psig
R0 10 ft
XSEG RX(1%) Units
XSEG(LJF) 118 ft
XSEG(RJF) 219 ft
Input Data 1. These instruction boxes apply to Worksheets TIR1, 2, 3, and 4. 2. Enter the Input Data indicated for the case under analysis. 3. Enter the XSEG values from Worksheet "XSEG Calculations".4. In the table below enter the F0 data for the appropriate type pf pipeline from the failure frequency data in the Protocol, Chapter 4.
Workbook:TIR CALCS 3.07
Sheet: TIR1
XSEG(RJF) 219 ft
XSEG(LFF) 0 ft
XSEG(RFF) 22 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
Leak Rupture Exposure
Base and Conditional Probability CalculationsBase
for the appropriate type pf pipeline from the failure frequency data in the Protocol, Chapter 4. 5.Enter a value for the other green cell variables as explained in Chapter 4.
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
Calculated Values:
PA(LJF) 5.2E-05 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 9.5E-05 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 9.7E-06
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 5.2E-05 0.06 0.040 1.3E-07
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 9.5E-05 0.01 0.040 2.1E-08
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 9.7E-06 0.000 0.040 1.1E-10
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
Probability Term Values
Impact Probability Calculations
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR CalculationMAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 1.3E-07 1.3E-07
IR(RJF) = 1.00 2.1E-08 2.07E-08
IR(LFF) = 1.00 0.0E+00 0.00E+00
IR(RFF) = 1.00 1.1E-10 1.11E-10
IR(LEX) = 1.00 0.0E+00 0.00E+00
IR(REX) = 1.00 0.0E+00 0.00E+00
6. Enter the maximum fatality probability that corresponds to the maximum impact for each hazard type according to the Protocol, Chapter 4.
IR(REX) = 1.00 0.0E+00 0.00E+00
1.5E-07
1.0E-06
0.15
0.25PROTOCOL TIR INDICATOR RATIO
CDE INDIVIDUAL RISK CRITERION, IRC
TIR/IRC RATIO
TOTAL INDIVIDUAL RISK, TIR
Workbook:TIR CALCS 3.07
Sheet: TIR1
TIR CALCULATIONS - END ZONE 1 - BEGIN ZONE 2
Green cells indicate data entry cells.
Input Data
Product crude oil
Diameter 12 inches
Pressure 400 psig
R0 150 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR Calculation
MAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR2 = 0.0E+00
Base and Conditional Probability Calculations
Impact Probability Calculations
Probability Term Values
Exposure Base Leak Rupture
Workbook: TIR CALCS 3.07
Sheet: TIR2
TIR CALCULATIONS - END ZONE 2 - BEGIN ZONE 3
Green cells indicate data entry cells.
Product crude oil
Diameter 12 inches
Pressure 400 psig
R0 290 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR Calculation
MAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR3 = 0.0E+00
Exposure
Input Data
Base and Conditional Probability Calculations
Impact Probability Calculations
Probability Term Values
Base Leak Rupture
Workbook: TIR CALCS 3.07
Sheet: TIR3
TIR CALCULATIONS - END ZONE 3 - BACK PROPERTY LINE
Green cells indicate data entry cells.
Product crude oil
Diameter 12 inches
Pressure 400 psig
R0 430 ft
XSEG RX(1%) Units
XSEG(LJF) 0 ft
XSEG(RJF) 0 ft
XSEG(LFF) 0 ft
XSEG(RFF) 0 ft
XSEG(LEX) 0 ft
XSEG(REX) 0 ft
F0 2.3E-03 PC(L) 0.8 PC(R) 0.2 PC(OCC) 0.16
P0 2.3E-03 PC(LIG) 0.09 PC(RIG) 0.03 PC(OUT) 0.25
PAF 1.0 PC(FIG) 0.95 PC(FIG) 0.95
PA 2.3E-03 PC(JF) 0.95 PC(JF) 0.95
PC(FF) 0.05 PC(FF) 0.05
PC(EIG) 0.05 PC(EIG) 0.05
PA(LJF) 0.0E+00 PCI(LJF) 0.065 PCI(RJF) 0.005
PA(RJF) 0.0E+00 PCI(LFF) 0.003 PCI(RFF) 0.000
PA(LFF) 0.0E+00 PCI(LEX) 0.003 PCI(REX) 0.000 PC(EXPO) 0.04
PA(RFF) 0.0E+00
PA(LEX) 0.0E+00
PA(REX) 0.0E+00
PC(LJF) = PA(LJF) x PCI(LJF) x PC(EXPO) = 0.0E+00 0.06 0.040 0.0E+00
PC(RJF) = PA(RJF) x PCI(RJF) x PC(EXPO) = 0.0E+00 0.01 0.040 0.0E+00
PC(LFF) = PA(LFF) x PCI(LFF) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(RFF) = PA(RFF) x PCI(RFF) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
PC(LEX) = PA(LEX) x PCI(LEX) x PC(EXPO) = 0.0E+00 0.003 0.040 0.0E+00
PC(REX) = PA(REX) x PCI(REX) x PC(EXPO) = 0.0E+00 0.000 0.040 0.0E+00
Based on data from impact distance figures in Section 4.6 and mortality figures in Section 4.5, enter
the maximum impact probability at receptor location for each hazard in MAX PF(X) column.
IR CalculationMAX PF(X) PC(X) IR(X)
IR(LJF) = 1.00 0.0E+00 0.0E+00
IR(RJF) = 1.00 0.0E+00 0.0E+00
IR(LFF) = 1.00 0.0E+00 0.0E+00
IR(RFF) = 1.00 0.0E+00 0.0E+00
IR(LEX) = 1.00 0.0E+00 0.0E+00
IR(REX) = 1.00 0.0E+00 0.0E+00
TIR4 = 0.0E+00
Input Data
Base and Conditional Probability Calculations
Impact Probability Calculations
Base Leak Rupture Exposure
Probability Term Values
Workbook: TIR CALCS 3.07
Sheet: TIR4
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental B-5 Risk Calculations
CRUDE OIL POOL SIZE ESTIMATES
Estimated Crude Oil Pool Size
1. Leak Scenario
Nominal Time Pool Impact
Pipe Pipe to Pool Release Release Release Surface Distance
Diameter Area Velocity Shut-off Depth Rate Rate Volume Area for Pool
(in.) (ft2) (fps) (min) (ft) (gpm) (cfm) (ft3) (ft2) (ft)
4 0.09 1.00 5.00 1.00 39 5 26 26 6
10 0.55 1.00 5.00 1.00 245 33 164 164 14
12 0.79 1.00 5.00 1.00 352 47 236 236 17
2. Rupture Scenario
Nominal Time Pool Impact
Pipe Pipe to Pool Release Release Release Surface Distance
Diameter Area Velocity Shut-off Depth Rate Rate Volume Area for Pool
(in.) (ft2) (fps) (min) (ft) (gpm) (cfm) (ft3) (ft2) (ft)
4 0.09 5.00 5.00 1.00 196 26 131 131 13
10 0.55 5.00 5.00 1.00 1224 164 818 818 32
12 0.79 5.00 5.00 1.00 1762 236 1178 1178 39
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental Site Maps
APPENDIX C
SITE MAPS
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental Pipeline Maps
APPENDIX D
PIPELINE MAPS
PREPARED BY SCS TRACERMAY 2012GCS, NAD 83SOURCE: USGS, CASIL
MAPPED PIPELINED WITHIN 1,500 FT OF SITE (EXCLUDING EXXON-MOBIL LINES)
LAWNDALE, CA - PSHA±
0 1,750875Feet
LEGENDPROJECT SITE16IN. HIGH VOLUME WATER LINELACSD SEWER LINE12IN. CRIMSON CRUDE LINE1,500 FT. BUFFER
PREPARED BY SCS TRACERMAY 2012GCS, NAD 83SOURCE: USGS, CASIL
EXXON-MOBIL MAPPED PIPELINESLAWNDALE, CA - PSHA±
0 1,800900Feet
LEGENDPROJECT SITE6IN WET GAS LINEG-105: 4IN. CRUDE LINEG-105-1: 10IN. CRUDE LINEG-105-3: 4IN. CRUDE LINEMGL-4: 6IN. GAS LINE 1,500 FT. BUFFER
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental Wind Rose
APPENDIX E
WIND ROSE
WRPLOT View - Lakes Environmental Software
WIND ROSE PLOT:
Lennox Wind Rose (1981)
COMMENTS: COMPANY NAME:
MODELER:
DATE:
5/18/2012
PROJECT NO.:
NORTH
SOUTH
WEST EAST
7%
14%
21%
28%
35%
WIND SPEED
(m/s)
>= 5.0
4.0 - 5.0
3.0 - 4.0
2.0 - 3.0
1.0 - 2.0
0.0 - 1.0
Calms: 0.00%
TOTAL COUNT:
8760 hrs.
CALM WINDS:
0.00%
DATA PERIOD:
Start Date: 1/1/1981 - 00:00End Date: 12/31/1981 - 23:00
AVG. WIND SPEED:
1.82 m/s
DISPLAY:
Wind SpeedDirection (blowing from)
Station ID: 52118 Run ID:
Start Date: 1/1/1981 - 00:00
End Date: 12/31/1981 - 23:00
348.75-11.25
11.25-33.75
33.75-56.25
56.25-78.75
78.75-101.25
101.25-123.75
123.75-146.25
146.25-168.75
168.75-191.25
191.25-213.75
213.75-236.25
236.25-258.75
258.75-281.25
281.25-303.75
303.75-326.25
326.25-348.75
Frequency of Calm Winds: 0
Average Wind Speed: 1.82 m/s
Wind Direction (Blowing From) / Wind Speed (m/s)
Frequency Distribution
(Count)
0.0 - 1.0 1.0 - 2.0 2.0 - 3.0 3.0 - 4.0 4.0 - 5.0 >= 5.0 Total
Total
66 324
48 195
61 249
99 468
234 829
28 213
42 247
54 307
83 433
39 225
61 456
24 368
130 2599
47 938
73 688
31 221
1120
202 324
141 195
187 249
356 468
525 829
175 213
187 247
224 307
334 433
173 225
278 456
148 368
571 2599
283 938
401 688
163 221
4348
18 324
2 195
1 249
9 468
49 829
7 213
15 247
19 307
10 433
10 225
65 456
78 368
605 2599
270 938
133 688
9 221
1300
10 324
3 195
0 249
4 468
21 829
3 213
3 247
7 307
4 433
1 225
46 456
90 368
836 2599
217 938
59 688
6 221
1310
16 324
1 195
0 249
0 468
0 829
0 213
0 247
3 307
1 433
2 225
6 456
25 368
406 2599
89 938
20 688
8 221
577
12 324
0 195
0 249
0 468
0 829
0 213
0 247
0 307
1 433
0 225
0 456
3 368
51 2599
32 938
2 688
4 221
105 8760
WRPLOT View 7.4.0 - Lakes Environmental Software
Station ID: 52118 Run ID:
Start Date: 1/1/1981 - 00:00
End Date: 12/31/1981 - 23:00
348.75-11.25
11.25-33.75
33.75-56.25
56.25-78.75
78.75-101.25
101.25-123.75
123.75-146.25
146.25-168.75
168.75-191.25
191.25-213.75
213.75-236.25
236.25-258.75
258.75-281.25
281.25-303.75
303.75-326.25
326.25-348.75
Frequency of Calm Winds: 0.00%
Average Wind Speed: 1.82 m/s
Wind Direction (Blowing From) / Wind Speed (m/s)
Frequency Distribution
(Normalized)
0.0 - 1.0 1.0 - 2.0 2.0 - 3.0 3.0 - 4.0 4.0 - 5.0 >= 5.0 Total
Total
0.007534 0.036986
0.005479 0.022260
0.006963 0.028425
0.011301 0.053425
0.026712 0.094635
0.003196 0.024315
0.004795 0.028196
0.006164 0.035046
0.009475 0.049429
0.004452 0.025685
0.006963 0.052055
0.002740 0.042009
0.014840 0.296689
0.005365 0.107078
0.008333 0.078539
0.003539 0.025228
0.127854
0.023059 0.036986
0.016096 0.022260
0.021347 0.028425
0.040639 0.053425
0.059932 0.094635
0.019977 0.024315
0.021347 0.028196
0.025571 0.035046
0.038128 0.049429
0.019749 0.025685
0.031735 0.052055
0.016895 0.042009
0.065183 0.296689
0.032306 0.107078
0.045776 0.078539
0.018607 0.025228
0.496347
0.002055 0.036986
0.000228 0.022260
0.000114 0.028425
0.001027 0.053425
0.005594 0.094635
0.000799 0.024315
0.001712 0.028196
0.002169 0.035046
0.001142 0.049429
0.001142 0.025685
0.007420 0.052055
0.008904 0.042009
0.069064 0.296689
0.030822 0.107078
0.015183 0.078539
0.001027 0.025228
0.148402
0.001142 0.036986
0.000342 0.022260
0.000000 0.028425
0.000457 0.053425
0.002397 0.094635
0.000342 0.024315
0.000342 0.028196
0.000799 0.035046
0.000457 0.049429
0.000114 0.025685
0.005251 0.052055
0.010274 0.042009
0.095434 0.296689
0.024772 0.107078
0.006735 0.078539
0.000685 0.025228
0.149543
0.001826 0.036986
0.000114 0.022260
0.000000 0.028425
0.000000 0.053425
0.000000 0.094635
0.000000 0.024315
0.000000 0.028196
0.000342 0.035046
0.000114 0.049429
0.000228 0.025685
0.000685 0.052055
0.002854 0.042009
0.046347 0.296689
0.010160 0.107078
0.002283 0.078539
0.000913 0.025228
0.065868
0.001370 0.036986
0.000000 0.022260
0.000000 0.028425
0.000000 0.053425
0.000000 0.094635
0.000000 0.024315
0.000000 0.028196
0.000000 0.035046
0.000114 0.049429
0.000000 0.025685
0.000000 0.052055
0.000342 0.042009
0.005822 0.296689
0.003653 0.107078
0.000228 0.078539
0.000457 0.025228
0.011986 1.000000
WRPLOT View 7.4.0 - Lakes Environmental Software
WRPLOT View 7.4.0 - Lakes Environmental Software
0.0
12.8
49.6
14.8 15.0
6.6
1.20
5
10
15
20
25
30
35
40
45
50
55
60
%
Wind Class Frequency Distribution
Wind Class (m/s)Calms 0.0 - 1.0 1.0 - 2.0 2.0 - 3.0 3.0 - 4.0 4.0 - 5.0 >= 5.0
0.8
11.2
15.9
27.6
11.7
13.4
19.5
0
5
10
15
20
25
30
%
Stability Class Frequency Distribution
Stability ClassA B C D E F G
Rev. 0
CVUHSD – LHS Additional Property Pipeline Safety Hazard Assessment
SCS Tracer Environmental Data Collection
APPENDIX F
DATA COLLECTION
TABLE F-1 Pipeline Data Collection Summary
F-1
Agency /
Company
Contact Name Contact Phone Contact Email Communications Data Provided Data Not
Provided
So Cal Gas Co. (not applicable) (not applicable) (not applicable) 4/9/12: Accessed interactive map online Maps of pipelines
(transmission and
high pressure
distribution lines)
(not applicable)
National Pipeline
Mapping System
(not applicable) (not applicable) (not applicable) 4/10/12: Accessed interactive map online Operator contact
information
Locations of DOT-
regulated pipelines
Crimson Pipeline Alex Morales (562) 285-4102
AMorales@
crimsonpl.com 4/9/12: Voicemail inquiry regarding data
request
4/10/12: Email submittal of initial data
request
4/16/12: Follow-up email regarding data
request email
4/26/12: Follow-up voicemail
5/3/12: Email response from Crimson with
pipeline map attachments
5/10/12: Sent email requesting pipeline
operating pressures and ages
Maps of pipelines Operating
pressure
Pipeline age
ExxonMobil
Pipeline
David Kingston (310) 212-1768 david.j.kingston@e
xxonmobil.com 4/10/12: Voicemail inquiry regarding data
request
4/11/12: Email submittal of data request
4/12/12: Response email with instructions for
formal data request and mailed data request
5/4/12: Sent email to David regarding data
request update
5/4/12: Received response to data request
which included pipeline maps.
Maps and pipeline
statuses (idle)
(not applicable)
Golden State
Water Company
Michael S.
Thompson, P.E.
(810) 767-8200,
ext. 501
Michael.Thompson
@gswater.com 4/12/12: Requested data via telephone and
received pipeline maps via email.
4/25/12: Requested clarification on map
abbreviations for pipeline materials.
4/26/12: Received response to pipeline
Maps of pipelines
and operating
pressures
(not applicable)
TABLE F-1 Pipeline Data Collection Summary
F-2
Agency /
Company
Contact Name Contact Phone Contact Email Communications Data Provided Data Not
Provided
material request via email.
LA County
Sanitation
District
Jon Ganz (562) 699-5422 [email protected] 4/11/12: Accessed online pipeline map,
inquired about data request process via
telephone, and sent data request via fax.
4/20/12: Received hard copies in the mail
with pipeline locations
Maps of pipelines (not applicable)
California State
Fire Marshall
Lisa Dowdy (916) 445-8363
.gov 4/6/12: Submitted data request via fax
4/11/12: Received response via email that
included pipeline operator (Crimson) and size
of pipeline that exists within 1,500 feet of
project location.
Name of pipeline
operators within
1,500 feet of project
location
(not applicable)
Dept. of Oil, Gas
and Geothermal
Resources
(DOGGR)
Abdulraman
(AB)
Abdulmageed
(714) 816-7824
abdulmageed.abdul
raman@conservati
on.ca.gov
4/19/12: Requested locations of gathering
lines and other oilfield-related pipelines – was
instructed to access online database for well
statuses and to contact operators directly for
line locations.
List of wells (idle)
within the Lawndale
Oilfield
Location of wells
near the project site
(GIS data)
(not applicable)
Graner Oil
Company
Robert Graner (562) 424-0965 rob41@mindspring
.com 4/17/12: Requested gathering line locations
via telephone, submitted fax request and email
request.
4/18/12: Sent follow-up email regarding data
request.
Confirmed that there
are no active
gathering lines
operated by Graner.
Location of idle
lines.