Tank Gauging

PPT-SM-TG 2016

When oil and gas workers open tank hatches to gauge or collect fluid samples on tanks that contain process fluids, they can be exposed to

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Hydrocarbon gases and

vapors

Oxygen-deficient

atmospheres

Fires and explosions

PPT-SM-TG 2016

Opening tank or thief hatches can cause high concentrations of hydrocarbon gases and vapors to be released

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Workers face serious health and safety risks when they gauge or sample tanks

PPT-SM-TG 2016

The gas and vapor concentrations that are released can be more than 10% of the lower explosive limit LEL

This increases the chances of a fire or explosion

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PPT-SM-TG 2016

Exposure and fire and explosion risks can be different depending on factors, such asThe tank contents and operating conditionsIgnition sources

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PPT-SM-TG 2016

Potential ignition sources includeStaticCell phonesSparks from tools or metal objectsOpen flamesNon-approved electrical equipment and devices

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PPT-SM-TG 2016

Exposure to hydrocarbon gases and vaporscan affect a worker’s EyesLungsCentral nervous system

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Even a brief exposure of 30 seconds or less could kill you

PPT-SM-TG 2016 8

Exposure can also have a narcotic effect and cause a worker to become dizzy, disorientated, and confused

Some hydrocarbons can also cause cancer

PPT-SM-TG 2016

There are many ways to prevent workers from being exposed to the hazards associated with tank gauging and sampling

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PPT-SM-TG 2016

Employers must Conduct exposure and hazard assessmentsProvide trainingVerify sub-contractors are following work practices and procedures

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PPT-SM-TG 2016

Employers should protect workers by using engineering controls such asRemote or automatic gauging and samplingBlowdown valvesTank sampling tapsThief hatch pressure indicators

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PPT-SM-TG 2016 12

Workers should be trained on Hazard communication Lone worker policies Proper PPE and respiratory protection use Tank gauging work practices and

procedures Emergency response Use and limitations of toxic- or multi-gas

meters for oxygen, hydrogen sulfide, upper explosive limits, and carbon monoxide

PPT-SM-TG 2016 13

Workers must Follow your company’s hazard assessment

and established work practices and procedures

Attend hazard communication training

Be aware of potential ignition sources

Wear PPE as required

PPT-SM-TG 2016 14

PPE includes Flame retardant clothing Appropriate respiratory protection Impermeable gloves

PPT-SM-TG 2016

If you are unsure about any company policies or procedures or if you have any questions, stop the job and ask

Every worker has the right to stop work that is unsafe

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PPT-SM-TG 2016

You face serious health and safety risks when you work on or near production and flowbacktanks and open a thief hatch

Follow your company’s work practices and wear the proper PPE

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Copyright © 2016 by PEC/Premier Safety Operations, LLC

Safe

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Sign and date this quiz sheet. Circle the letter representing the correct answer to each quiz question below.

Name:©

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QUIZ-SM-Tank GaUGInGMaY 2016

Date:

1. When oil and gas workers open tank hatches to gauge or collect fluid samples on tanks that contain process fluids, they can be exposed to ______________, oxygen-deficient atmospheres, and fires and explosions.

A. Hydrocarbon gases and vapors

B. Asbestos and other fibersC. Bloodborne pathogensD. Workplace violence

2. Exposure to fire and explosion risks can be different depending on factors, such as the tank contents, operating conditions, and _______________.

A. The height of the tankB. Ignition sourcesC. The color of the tankD. The worker’s experience

level

3. Gas and vapor concentrations greater than 10% of the LEL can _______________ the chances of a fire or explosion.

A. DecreaseB. IncreaseC. LimitD. Lower

4. Potential ignition sources can include static, cell phones, and _______________.

A. Non-sparking toolsB. Approved electrical

equipment and devicesC. Intrinsically safe toolsD. Non-approved electrical

equipment and devices

5. Exposure to hydrocarbon gases and vapors can cause _______________.

A. CancerB. TuberculosisC. SilicosisD. Asbestosis

6. Even being briefly ________________ hydrocarbon gases and vapors for 30 seconds or less could kill you.

A. Exposed toB. Protected fromC. Guarded fromD. Trained on

7. Workers should be trained on the ________________ of toxic- or multi-gas meters for oxygen, hydrogen sulfide, upper explosive limits, and carbon monoxide.

A. Costs and availibilityB. Side effectsC. Supply and demandD. Use and limitations

8. Workers must ________________.A. Conduct exposure and

hazard assesmentsB. Provide trainingC. Verify sub-contractors are

following work practices and procedures

D. Wear PPE as required

9. PPE for tank gauging includes flame retardant clothing, appropriate respiratory protection, and ________________.

A. A reflective vestB. Ear plugsC. Impermeable glovesD. Ear muffs

10. Every worker has the right to ________________ work that is unsafe.

A. StopB. ContinueC. Make someone else doD. Ignore

Tank

Gau

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Safety Meeting answer keys: Tank Gauging Instructors: The following key shows the answers for the Tank Gauging safety meeting quiz.

© 2016 PEC

Safety, Inc.

kEY-SM-Tank GaUGInGMaY 2016

1. A

2. B

3. B

4. D

5. A

6. A

7. D

8. D

9. C

10. A

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Tank Gauging

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