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SOUTHERN INDUSTRIAL GAS SDN BHD

JOB METHOD STATEMENT: OXYGEN ANALYZER

JOB METHOD STATEMENT

(Model 3110 Portable Trace Oxygen

Analyzer)

Prepared By:

Approved By:

Reviewed By:

Approved By:

Name: Adrian Mah Designation: Project Engineer Company: SIG Date: 09/05/2016

Name: Richard Chung Designation: Operations and Safety Manager Company: SIG Date: 09/05/2016

Name: Designation: Company: Date:

Name: Designation: Company: Date:



NO

TABLE OF CONTENTS.

1

OBJECTIVE

2

FIGURES AND LABELS

3

JOB METHOD STATEMENT

4

EQUIPMENTS

5

MANPOWER LIST

6

CUSTOMER ACCEPTANCE FORM (SIG)

7

CALIBRATION CERTIFICATE

8

MODEL 3110 PORTABLE TRACE OXYGEN ANALYZER

(CATALOG)



1. OBJECTIVE.

This Job Method Statement details to be followed in order to test for the oxygen

concentration (% or ppm) within the LPG tank (Liquefied Petroleum Gas) after purging.

2. FIGURES AND LABELS.

Figure 2.1: Model 3110 Portable Trace Oxygen Analyzer (Front View with Labels)



Figure 2.2: Model 3110 Portable Trace Oxygen Analyzer (Back View with Labels)



Figure 2.3: Snoop

Label Description

V1 Pressure Regulator Valve

V2 Flowmeter Valve

V3 Purge Valve

V4 Navigation Keys

R1 Inlet Pressure Reading (barg or psig)

R2 Outlet Pressure Reading (barg or psig)

R3 Analyzer Reading

R4 Flowmeter Reading (L/min of AIR)

C1 Connection (1/4” Male Connector)



3. JOB METHOD STATEMENT.

2.1 Application of Permit to Work (PTW).

2.2 Preparation of tools and equipment which included the analyzer and snoop at

site. The measurements and readings of Model 3110 Portable Trace Oxygen

Analyzer consisted of pressure (bar or psi), flowrate (L/min in AIR) and oxygen

concentration (% or ppm).

2.3 The analyzer is turned on by switching on V4 to ensure that the battery is fully

charged beforehand and then switched off.

2.4 The analyzer and the snoop is brought to the pressure vessel and to be prepared

before it tested for oxygen concentration.

2.5 The ¼” Male connector from the LPG tank is then fitted to the analyzer inlet at

C1.

2.6 The valve from LPG tank is slowly opened and throttled to allow the gas to flow

into the analyzer until the pressure inlet shown in R1 is at around 4 to 5 barg.

2.7 The snoop is sprayed onto the valves and fittings of the analyzer to ensure no

gas leaking.

2.8 The outlet pressure is regulated by turning V1 until the pressure reading reached

1 barg as shown in R2.

2.9 Then the flowrate is controlled by turning V2 until the flowmeter reading on R4

reached 2 L/min of AIR.

2.10 The gas is then purged by turning on V3 and closing it, this process is repeated

for 1 minute to ensure all the residual gases is completely purged. After 1 minute,

the V3 is closed and the sample gas is ready to be tested.

2.11 Now the analyzer is turned on by switching on V4. The analyzer waited and

monitored for 3 to 5 minutes until the reading is constant.



2.12 After 3 to 5 minutes, the reading is taken as the final oxygen concentration of the

pressure vessel.

2.13 The reading is recorded into the SIG CUSTOMER ACCEPTANCE FORM and

ready to be evaluated by the customer.

2.14 After the testing, the analyzer is switched off. The valve from the pressure vessel

is closed and the gas is completely discharged outside by opening V3 fully.

2.15 Then the ¼” male connector at C1 can be safely disconnected to conclude the

test.

3. EQUIPMENTS.

3.1 Model 3110 Portable Trace Oxygen Analyzer

3.2 Snoop



4. MANPOWER LIST

4.1 Project Engineer – 1 Person (Adrian Mah Siew Hoe)

5. RECORD & REFERENCE

5.1 CUSTOMER ACCEPTANCE FORM (SIG)

5.2 CALIBRATION CERTIFICATE

5.3 MODEL 3110 PORTABLE TRACE OXYGEN ANALYZER (CATALOG)

Model 3110Portable Oxygen AnalyzerTrace/Percent, Intrinsically Safe

Model 3110 Portable Oxygen Analyzer

• Air separation and liquefaction

• Pure gaseous hydrocarbon stream monitoring

• Semiconductor manufacturing

• Protective atmosphere blanketing of primary liquid feedstocks and flammable liquids

• Process analysis of gaseous monomers – vinyl chloride, propylene, butadiene, isoprene, or ethylene

• Gas purity certification

• Glove box or pipeline leak detection

• Natural gas treatment and transmission

• Catalyst protection

• Inert gas welding of exotic metals

• Wave and reflow soldering

• Heat treating and bright annealing

• Nuclear fuel processing and isotope separation

• Analysis of chemical reactions

• Headspace gas analysis

• Crystal growth

• Plastics manufacturing

APPLICATIONS

GENERAL DESCRIPTION

• Intrinsically safe, FM/FMc or ATEX approved.

• Digital meter readout

• 0-1 VDC output, data logging capabilities

• Ideal for measuring O2 in natural gas and a variety of other background gases

• Long-life, maintenance-free, Micro-fuel Cell oxygen sensor

• Universal AC charger

• Real-time data-logging capabilities with digital

output that can be downloaded directly to a PC

• Stainless steel quick disconnect gas fittings

• Sample system consisting of coalescing filter,

needle valve, flow meter, fittings and tubing suitable

for trace/percent O2 analysis

• Insta-trace for fast recovery after installation

• NG option: H2S and sulfur resistant sensor

FEATURES AND BENEFITS

OPTIONS

The Model 3110 represents the new generation of portable trace and percent oxygen analysis capability.

The 3110 combines a rugged, portable analyzer design with the high reliability of Teledyne trace and percent level sensors. This ensures highly accurate ppm/percent oxygen readings in a variety of background gases -- including hydrocarbons. The batteries supply at least 100 hours of continuous power to the analyzer, with a low-battery indicator LED.

The analyzer includes quick-disconnect fittings to take measurements without hassle and can be equipped with an external sample system. The microprocessor-based electronics provide accurate, high resolution readings and easy-to-use features.

2

Built for Reliability and PerformanceModel 3110 comes standard with a

heavy plastic carrying case with foam interior.

Model 3110 Portable Oxygen Analyzer

SPECIFICATIONS

3

Ranges: 3110: 0-10 ppm to 0-25% O2 3110XL: 0-2 ppm to 0-25% O2 3110P: 0-1% to 0-25% O2

Response Time: Trace ranges (with B-2C sensor): < 60 seconds or less Percent ranges (with B-1 sensor): < 7 seconds

Operating Temperature: 32 to 104°F (0 to 40°C)

Reproducibility: ±1% at constant temperature

Sensor Type: Micro-fuel Cell

System Power: NiCad batteries, AC adapter included for battery charging 110/220 VAC 50/60 Hz, 0.25A

Weight: 6 lbs. (2.71 kg)

Approval: Factory Mutual (FM/FMc), intrinsically safe, Class I Div 1 Groups A-D T6 ATEX, intrinsically safe, Ex ia IIC T3 CE marked

Battery: Ni-Cad, >100 hours per charge, 5-year expected life

16830 Chestnut StreetCity of Industry, CA 91748, USA

TEL: (626) 934-1500 or (888) 789-8168FAX: (626) 934-1651E-MAIL: [email protected]

www.teledyne-ai.com

WarrantyInstrument is warranted for one year against defects inmaterial or workmanship

NOTE: Specifications and features will vary with application. The above are estab-lished and validated during design, but are not to be construed as test criteria for every product. All specifications and features are subject to change without notice.

Model 3110 is available with an optional sample system consisting of coalescing filter, SS needle valve, flow meter, flexible tubing and fittings

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