work permit system1

8/11/2019 Work Permit System1

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WORK

PERMIT

SYSTEM


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ROAD MAP

The session will include the following:

Presentation on OIL Work Permitsystem followed by discussion

Role of Issuing & Executing Authority

Exercise how to fill the permit Questionnaire/QUIZ


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WHY WORK PERMIT?

Petroleum Installations handle Hydrocarbons

and toxic materials - poses special risks.

Maintenance Personnel are not adequately

familiar with process conditions. Operation will determine that it is safe to

perform the designated job.

Basic purpose of permit system is to preventinjuries to personnel.

The basic purpose of the work permit system is to ensure that

work is carried out in the safest possible manner to prevent

injuries to personnel, protect property from damage, avoid fire

and other hazards etc.


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WHY WORK PERMIT Following Oil Industry Safety Directorates Standards are in Indian Petroleum

Rules :2002OISD -105 (Work permit system)

OISD-116 (Fire Protection facilities for Petroleum Refineries and Oil/Gas

Processing Plants)

OISD- 117(Fire Protection Facilities for Petroleum Depots and Terminals and

pipeline installations)OISD-118 (Layouts for Oil and Gas Installations)

OISD-141 (Design and Construction requirements for cross country

hydrocarbon pipelines)

OISD156 (Fire Protection Facilities for Ports Handling Hydrocarbons )

OISD Standard means technical standards formulated by OISD and approved

by Safety Council constituted under the Ministry of Petroleum and Natural Gas to

ensure safety in Oil and Gas Industry (as amended from time to time).


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WHY WORK PERMIT

Protect property from damage

Avoid fire

Ensure that all work is carried out in

safest possible manner.

permit specifies the conditions and

procedure for safe execution.


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WORK PERMIT REQUIRMENT

Permit is required for the following jobs :

Major & Minor Maint. work.

Inspection.

Construction.

Process Equip. cleaning

Entry into confined space. Excavation

Vehicle entry into hazardous areas etc.


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WORK PERMIT NOT

REQUIRED Works carried out by Oprs. Dept. as a

part of routine operation.


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TYPES OF PERMITS

Types of work permit generally used (not specific toOIL):

HOT WORK , VESSEL ENTRY/ VESSEL BOXUP/ EXCAVATION/ VEHICLE ENTRY PERMIT : For

use of or generates local source of ignition, vehicle &engine operated equip. entry to hazardous areas.

COLD WORK PERMIT : For all general Maint.works (no ignition source)

EXCAVATION CLEARANCE

ROAD CUTTING & BLOCKAGE PERMIT

PERMIT FOR WORKING AT HEIGHT

RADIATION WORK PERMIT


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ISSUING AUTHORITY OF

WORK PERMIT Issuing authority is responsible for

preparation and handing over of

the equipment in safe condition to

perform the work. Authority to issue all types of work

permits is generally granted to

Installation Managers & in special

cases to authorized CompetentPersons.


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EXECUTING AUTHORITY

OF WORK PERMIT Request for a work permit by executing

authority. He shall indicate types of

tools and equipment necessary forperforming the work.

He shall also ensure his tools,

equipment and accessories are in goodcondition and all his workers are

provided with proper PPE.


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Item Done Not

Reqd.

Item Done Not

Reqd.

1 Equipment/work area inspected 7 Equipment Properly steamed/

purged

2 Surrounding area checked,

Cleaned and covered

8 Equipment water flushed

3 Electrical/substation switchesLocked out and tagged

9 Iron Sulphide removed/kept wet

4 Running water hoses/portable

Extinguisher provided

10 Proper ventilation and lighting

Provided

5 Equipment blinded / disconnected/

closed/isolated wedged open/tagged

11 Gas test done, found gas free

6 Equipment properly drained /

depressurized

12 Area roped off/Cordoned off

ORIGINAL

Oil India Limited Sr. No.: ____________

(A GOVERNMENT OF INDIA ENTERPRISE)

COLD WORK PERMITValid________________AM______________________________To________________AM____________

PM DATE PM DATE

Permission is granted to : Section/Contractor :________________________Name :_______

Nature of work:_________________________________________________________________________________

Location of work:_______________________________________________________________

SPECIAL INSTRUCTION:1. Following personal protective equipment are required: (Initial all items required)

Safety Hat / Gloves / Goggles / Safety Shoes / Boiler Suit / Welding Suit / Dust Respirator / Face Shield / Fresh

Air/Mask / Apron / Lifeline / Safety Belt.2. In case of fire alarm, all work must be stopped. All personnel must leave work site and proceed to designated

areas

3. Remarks on toxic/ hazardous chemical, if any _____________________________________________________

4. Alternate means of escape available / provided / not required.

5. This permit must be available at work site at all times.

6. Additional items , if any __________________________________________________________

Name and Signature of Issuer Name and signature of Receiver


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PREPARATION OF EQUIP.

CONTD. Ventilated & gas freed

Continuous inert gas flow / continuous

adequate ventilation arranged.

Vehicle/equipment in good condition

with spark arrested

Radiation source removed(Confined

space entry)


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RESIDUAL HAZARDS

Lack of oxygen

H2S and/or any other toxic gases

Combustible gases

Corrosive chemicals

Steam / Condensate

Pyrophoric iron

High humidity


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PROTECTION MEASURES

Protective clothing

Hearing protection

Safety Harness

Eye protection

Face protection

Respiratory protection

Keep fire equipment stand-by


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PROTECTIVE MEASURES

CONTD.

To ensure positive isolation & maintain

it all through

Ensure adequate ventilation all through

Display copy of entry permit near entry

manhole


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GAS TEST FOR WORK PERMIT

Why gas test is required ?

Most of the gases are unwanted

Hazards involved -

Flammability(Fire & Explosion)

Toxicity(health hazard)

Oxygen Deficiency


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GAS TESTCONTD.

COMMON TERMINOLOGIES :

For flammable substances:

Flash Point:Minimum temp. at which a liquid gives off

sufficient vapor to form an ignitable mix. It

will give a flash, flame will not continue.

Auto Ignition Temp.:

The lowest temp. to which a substance will

ignite without a spark or flame.


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GAS TEST CONTD.

Explosive limit:

The concentration range of vapor in air

when propagation of flame(ignition)occurs in presence of an ignition

source.

LEL(Lower Explosive Limit) :

The minimum concentration of vapor to

air required to propagate(ignite) flame.


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GAS TEST CONTD.

UEL(Upper Explosive Limit) :

The maximum vapor to air concentration

above which propagation of a flame willnot occur(will not ignite).


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GAS TEST CONTD.

Toxic substances :

(Threshold Limit Value / PEL(PermissibleTLV

Exposure Limit) :

The maximum permissible conc. of a toxic substanceto which exposure of a person will have no adverse

effect on health for working 8 hrs per day.

(Short Term Exposure Limit) :STELMaximum conc. to which worker can be exposed for a

period of 15 mins. without any adverse effect to

health.


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GAS TEST CONTD.

IDLH(Immediate Danger to Life & Health)

A maximum conc. from which one can

escape within 30 mins. withoutirreversible health effect.

HYDROGEN SULPHIDE (H2S)

Highly toxic, combustible, colorless.

Smells like rotten egg.


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GAS TEST - H2S

EFFECTS ON HUMAN BODY

PHYSICAL EFFECT CONC.(PPM)

Can be smelled as rotten egg 0.13

TLV 10

STEL 15

Smelling sense will dry within 150 - 2002 mins, burning sensation in

eye & throat


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GAS TEST - H2SCONTD.

PHYSICAL EFFECT CONC(PPM)

IDLH(Loss of smelling sense, 300

heavy breathing, dizziness,

headache,and total collapse

within 1 to 4 Hrs)

Dizziness,headache,lungs 450

problem and total collapse within 30 to

60 mins.


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GAS TEST-H2S CONTD.

PHYSICAL EFFECT CONC(PPM)

Slow down of heart beats, 700

heavy breathing with coughing,

then death, if not rescued

Fatal emergency over 700

Explosive limits : 4.6 to 46%, it gives blue

flame when ignited.


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GAS TEST-H2S CONTD.

FIRST AID :

IF INHALED -

Remove exposed person to fresh air

and administer oxygen immediately.

PROTECTION:

Use fresh air mask in case conc.

exceeds 10 PPM


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TOXIC GAS - CO

TOXIC AS WELL AS FLAMMABLE

TLV - 50 PPM

STEL - 400 PPM

IDLH - 1500 PPM

LEL - 12.5%

UEL - 74 %


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GAS TEST - CO

HEALTH HAZARDS:

CO combines with hemoglobin of blood

and make it unable to carry oxygen.

Symptoms : Headache, dizziness to

unconscious and ultimately death.

First Aid :

Remove to fresh air and apply oxygen

at the earliest.


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OTHER TOXIC GASES

TOXIC GAS TLV STEL IDLH

NH3 25 35 -

SO2 2 5 -

CL2 0.5 1 30


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GAS TEST CONTD.

Confined space With BA protection :

Combustible - 20% of LEL maximum

H2S - Less than 100 PPM

CO - Less than 500 PPM

However, no hot job can be carried out

inside the confined space at this

condition.


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WORKS NEED GAS TEST

Gas tests are required for all hot

work/vehicle entry and confined space

entry permits & some cold permits also. Issuing authority shall determine the

requirement of gas test & frequency of re-

checking.

Trained Gas tester only shall carry out thetest.


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RESPONSIBILIES OF GAS

TESTING AUTHORITY To check & confirm that the gas testing

instrument is working in perfect condition

before proceeding for the area/equipment To carry out gas test at all critical

locations/positions

To advise on safe method to work inside/at

the location i.e., further gas freeing , use ofPPE etc.


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ELECTRICAL ISOLATION

Before issuing a Work Permit, it is

essential to ensure that the equipment /

facility to be worked on is electrically safeand electrical power is isolated to the

extent necessary for the safe conduct of

the authorized work.

Issuing, Executing authorities andElectrical Maintenance shall jointly decide

the extent of isolation required.


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DO NOT OPERATE tag shall be used

when isolation by local switch is decided

as adequate protection.

Multi-lock systems to be used whendifferent crafts are involved.(this is

towards best safety practices)


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SPECIAL REQUIREMENT FOR -

WORKING WITH RADIOGRAPHY

Risk assessment through checklist Barricade the area and provide adequate

warning signs.

Film badges and Dosimeters shall be

worn by personnel handling radiography

equip.

job preferably during night time or with least orno person around.

Continuous monitoring of cordoned off area


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SPECIAL REQUIREMENTS

FOR HOT WORK The person who authorizes the Hot Work

Permit is responsible for ensuring that the

site and the equipment are properlyprepared to prevent the danger of fire &

explosion involving flammable material.

The equipment shall be emptied and

cleaned of flammable materials andisolated from sources of hydrocarbons by

means of disconnection, blanking or

insertion of blinds.


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Equipment and surrounding areas shall be

checked to ensure that they are free from

any combustible gas.Carry out gas test.

Any heavy oil deposit, dried vegetation or

other flammable / combustible materials

within 8 m of a hot work site shall becleared away.

No hot work shall be allowed within a

radius of 15 m of any sample point, drain

or relief valve outlet unless precautionshave been taken to prevent the escape of

flammable liquids and vapors.


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REQUIREMENTS FOR

CONFINED SPACE ENTRY The process vessel / equipment is to be

positively isolated by blinding.

Shall be made safe for entry bydepressurizing, venting, draining,

steaming, washing and ventilating.

Radiation sources ,if any, shall be

removed. The atmosphere within the confined space

shall be checked initially and

periodically(gas test).


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EXCAVATION

AUTHORIZATION An excavation authorization is required for all

excavations. Detail drawings of the

underground facilities shall remain attached

with the authorization if available.

In addition to an Excavation Authorization a

Cold / Hot work Permit is required to work.

For excavations more than 1.2 meter deepconfined space entry permit is required. Gas

tests shall be done as per entry permit

requirements.


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SUSPENSION OF WORK

PERMIT All work shall immediately stop when

a fire or emergency alarm is sounded

or accident of any kind occurs.Approval from the F&S shall be

obtained after necessary preliminary

investigations, to resume such work. The Work Permit shall be revalidated

to resume the work.


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Any responsible members authorized

to suspend work and withdraw theWork Permit if, safety regulations are

violated.

If work is not started or is stoppedfor over two hours, the permit shall

be revalidated by the issuing

authority.


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VALIDITY OF PERMIT

Work permit shall be initially issued

for a period of 8 hrs. and shall be

renewed for one more shift . On need basis , permit can be given

for max. 7 days period.

Clearance to be obtained every shift. Clearance to be given after

physically checking the site.


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CLOSING AND FILING OF

USED WORK PERMITS Permit Closure: Duly filled and signed by

both executing & issuing authority at

completion of work

Copies of the closed permits shall be

properly filed and kept with the respective

disciplines for at least one month from

the date of issue/closure. Different typesof permits shall be filed separately in

chronological order in box files.


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BASIC RESPONSIBILITIES

OF ISSUING AUTHORITY To prepare the equipment and properly

tick the checklist items

To identify & indicate any residualhazard

To advise on protective measures &

mention To carry out gas test wherever reqd.

and enter the result with sign,date &

time


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RESPONSIBILITIES OF

ISSUING AUTHORITYCONTD.

To discuss & explain with/to executing

authority

Carry out electrical isolation wheneverreqd.

Close the permit when the job is

complete or end of permit duration,which one is earlier.

To preserve the permit for next one

month.


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BASIC RESPONSIBILITIES

OF EXECUTING AUTHORITY

To clearly understand the conditions of

the equipment and residual hazards

To discuss the above with issuingauthority and decide upon the protective

measures.

To describe the job and associatedhazards to the workmen

To ensure that safe procedure of

execution are being followed

RESPONSIBILITIES OF


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RESPONSIBILITIES OF

EXECUTING AUTHORITY

To check all the hand tools / devices/equipment and ensure that they are

healthy

To make the permit available at worksite all the time

To close the permit when the job is over

or at the end of permit duration,whichone is earlier.

To preserve the closed permit for next

one month


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The Work Permit System :

Work Execution

PREPARATORY WORK

ISSUE WORK PERMITS

SUPERVISION MONITORING

WORK COMPLETED

TESTING

RE-INSTATE EQUIPMENT

RETURN WORK PERMIT HANDBACK PLANT / EQUIPMENT

In briefThe Work Permit System :


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In briefThe Work Permit System :

Many accidents have occurred due to lack of Work Permit or

non observance of its consigned safety measures.

It could save your life!

The Safe Work Permit is useful for:

The safety of persons in charge of the workThe safety of persons in charge of the process

The risk management of the process and equipment

It is not one more administrative paper!Fill in and follow correctly the work permit, because.


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work permit system1

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