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Compressed Gases - Retraining . Tim Styranec Chemical Storekeeper. Why Here. Why Here - Had training last three years. Have retraining once a year. Thank you - for working for the dept. each year Excellent job, great having experienced people. Agenda/Review.

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Compressed gases retraining

Compressed Gases - Retraining

Tim Styranec

Chemical Storekeeper

Why here
Why Here

Why Here - Had training last three years. Have retraining once a year.

Thank you - for working for the dept. each year

Excellent job, great having experienced people.

Agenda review

  • Sign In Sheet - Put on time card

  • Review

    • Chemical Storage - Cabinets- Flamm, Corr. - Prep Rooms

    • Waste- red cans, use form, other

    • More organized - what need is in the prep rooms

    • Safety & Emergency- 911

  • Mercury spills

  • Gloves - nitrile

Chemical hygiene plan
Chemical Hygiene Plan

LAW -Chemical Hygiene Plan developed from Lab Safety Stand. Requires

Training, why here today. Last year Flammables. This training session concentrates on Compressed Gases u sedin some teaching but mostly research.

Special type of hazard.

Four ways to compress gases
Four Ways to Compress Gases

The purpose of gas cylinder is to "squeeze down" the space needed to store gases. Works more efficiently but creates a great deal of pressure. That pressure can become dangerous.

Four ways to compress gases1
Four Ways to Compress Gases

  • 1. Standard or straight gases - substance squeezed but still in gas form.

    • Ex. air, argon, Hydrogen

  • 2. Liquefied Gases - works with gases that condense at ordinary temperatures or between pressures of 2000 - 2500 lbs. of pressure.

    • Ex. Ammonia, Chlorine ,Propane

Four ways to compress gases2
Four Ways to Compress Gases

  • 3. Dissolved gases - Gas is unstable in pure form.

    • Ex. acetylene in acetone

  • 4. Cryogenic Materials - substances with boiling points below -238F.

    • Ex. Liquid Nitrogen, Liquid Helium


Hazards - Booklet - Reviews - Working with Hazardous Materials

1. Pressure - 2500 lbs pressure

 2. Equipment and Cylinder related –

 3. Temperature - L Nitrogen - 238 degree F, SOP For Liquid Nitrogen - SHOW.

Chemical hazards
Chemical Hazards

Chemical Hazard Categories -

Inert materials - displaces Oxygen - Nitrogen, Helium -asphyxiation

Toxic - cause adverse health effects - CO, Phosgene

Flammable - fire explosion risk - Hydrogen 

Reactive - Corrosive - erode flesh or equipment- Chlorine

Other dangers
Other Dangers

Oxidizers - react with flamm/combustibles - Oxygen

 Oxygen is not AIR

Cryogenic - COLD - boil off vapor can freeze human tissue.

Materials become brittle

Large vapor volume produced,

1 gal LOX =860 gal O2 gas

USE - Safety glasses, face shield, gloves

Proper storage procedures general
Proper Storage Procedures- General

Cool dry well ventilated place

Secure upright

Strap into place

Keep safety caps on till connections made

Keep out of direct sunlight

Keep Flammables and Oxidizer apart

Many gases should be kept away from electrical equipment.

Markings labeling
Markings & Labeling

Cylinders have identifying labels and stencils

Paint color is not an indicator

Safe cylinder handling always read msds
Safe Cylinder Handling - always read MSDS

Never drag across floor

DO NOT hand roll

Use 4-wheel cart

Caps must be on cylinder

DO NOT ride elevator with cylinder

Use clamps to secure cylinder in place

DO NOT stick objects into cap holes

Connections fittings
Connections & Fittings -

Regulators - reduces high level of pressure to safe usable level - # For each gas

CGA Fitting - connects to the cylinder valve to allow gas to be withdrawn - male/female

No adapters - use correct fitting

Safety Release Devices - prevent rupture and immediate/violet release of pressure (fire)

Allow for controlled release of material

Leak detection
Leak Detection

Suspected gas leak should be reported - Me, office

Any bad condition also should be reported - corroded cylinder, rust etc.

Test for Leaks - cover surface with diluted soap solution - tighten or correct fitting

Safety procedure and emergency info
Safety Procedure and Emergency info.

Read the MSDS -- what to wear, how stored, how to handle properly and safely.

Read Labels

Emergency Procedure - 911, 3333, 3700 EOHS, 3665. 

You are the only person who can make the area you work safe as possible.

Compressed gases retraining


Handling Compressed Gas Cylinders -- QUIZ

Departmental Ordering/Return Procedure


What working with Dangerous - Take time - PLAN