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FHM TRAINING TOOLS

FHM TRAINING TOOLS. This training presentation is part of FHM’s commitment to creating and keeping safe workplaces. Be sure to check out all the training programs that are specific to your industry. Compressed Gases . Learning Objectives. At the conclusion of this presentation, you will:

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FHM TRAINING TOOLS

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  1. FHM TRAINING TOOLS This training presentation is part of FHM’s commitment to creating and keeping safe workplaces. Be sure to check out all the training programs that are specific to your industry.

  2. Compressed Gases

  3. Learning Objectives • At the conclusion of this presentation, you will: • Know types of gases in compressed gas cylinders • Recognize hazards associated with these gases • Know safe use practices of compressed gases

  4. Agenda • Presentation agenda: • Information on compressed gases and cylinders • Chemical and physical hazards • Your responsibilities

  5. Section 1 Compressed Gases and Cylinders Information

  6. Compressed Gas Cylinders • Standard portable industrial gas cylinder: • Stores gases at high pressures • 57in tall, 9in diameter • One-quarter inch thickness • About 155lbs in weight when filled • 330 cubic ft of gas at 2640 lbs per square inch

  7. Four Types of Compressed Gases • Substance types in gas cylinders: • Gas at standard temperature, increased pressure • Liquefies at standard temperature, increased pressure • Dissolved in a solvent • Liquefies at reduced temperature, increased pressure

  8. Gas at STP • Gases at standard temperature: • Air • Argon • Helium • Nitrogen • Oxygen

  9. Liquefied Gases • Liquefied gases at standard temperature: • Butane • Propane • Carbon dioxide • Nitrous oxide

  10. Dissolved Gases • Gases dissolved in a solvent at standard temperature: • Acetylene

  11. Cryogenic Gases • Liquefied gases at reduced temperature: • Liquid nitrogen • Liquid oxygen • Carbon dioxide

  12. Hazards of Compressed Gas Systems • Hazards of use, storage, and handling of cylinders: • Chemical hazards: • Associated with cylinder contents • Physical hazards: • Due to presence of a high pressure vessel

  13. Section 2 Chemical Hazards

  14. Chemical Hazards • Chemical hazards of compressed gases: • Flammable • Corrosive • Explosive • Poisonous • Inert • Acidic • Reactive

  15. Labeling and Material Safety Data Sheets • Labeling and MSDS practices: • Cylinders may be stenciled or stamped • Three-part tag systems • Cylinder color-coding is unreliable • Periodic inspections • All gases to be included in: • Hazard communication chemical inventory • Material Safety Data Sheets

  16. Segregation • Compressed gases should be segregated from: • High traffic areas • Oil and grease • Flames, sparks, heat, or ignition • Electrical circuits • Cylinders should be protected from: • Ground • Direct sunlight • Dampness • Salt and other corrosives

  17. Fire Protection • Cylinders containing flammable gases should be: • Separated from cylinders containing oxidizing gas: • 20 feet • 5 foot fire-resistant barrier • Stored in a well-ventilated space • Use flow restrictors or surge protectors

  18. Cylinder Leaks • Leak detection procedures: • For flammable gas – soapy water solution • Temperatures at or below freezing use 50% glycerin-water • For toxic/corrosive gas – test with inert gas • Establish emergency procedures

  19. Engineering Controls • Common engineering controls: • Emergency shutoff switch • Gas cylinder cabinets • Flow restrictors • Emergency eyewash

  20. Section 3 Physical Hazards

  21. Physical Hazards • Container may rupture due to: • Forklift puncture • Knocked over • Ruptured tanks • May become projectiles • Release toxic gas into the atmosphere • Turn the environment flammable

  22. Securing Cylinders • Gas cylinders must be secured at all times: • In a vertical position • Secured at 2/3 of it’s height with: • Chain, plastic coated wire cable, or straps • Secured individually

  23. Transporting Cylinders • Rules for transporting: • Never drag, slide, or roll a cylinder • Always have valve cap on • Never transport with regulator in place • Ensure it’s secured to cart • Do not drop or strike against objects • Do not lift by valve cover • Do not use ropes or slings

  24. Cylinder Testing • Test information marked on cylinder: • Hydrostatic and burst testing are most common • Hydrostatic or ultrasonic testing is required every 5 - 10 years • DOT Specifications – Material or Construction Serial Number • Registered Owner • Date of Manufacture and original hydrostatic test • Neck Ring – Current Owner • Retest Markings • Barcode • Cylinder Manufacturers Marking • TW = Tare Weight

  25. Valve Connections • Cylinder attachments: • Cap over valve to protect it • Some cylinders have a protective frame • Pressure regulator: • Pressure gauge • Flow adjustment

  26. Gas Lines and Piping • Guidelines: • All gas lines should be labeled • Hoses should be examined • Avoid unnecessarily long hoses • Keep hoses free of kinks • Keep hoses away from high traffic areas • Repair leaks promptly • One hose per type of gas

  27. The Regulator • Precautions: • Make sure correct regulator is equipped • Inspect regulator and cylinder • Never use grease or oil • Valve handle should be easily accessible • Use proper tools for valves • Check MSDS • Fire extinguishers • Valve outlet facing away

  28. Cylinder Storage • Storage area should be: • Away from heat and ignition sources • Designated “no smoking” • Marked as gas storage • Restricted access • Provided with appropriate equipment

  29. Cylinder Storage (continued) • Gas containers should be: • Capped, stood upright, and properly secured • Segregated according to categories • Segregated according to full or empty • Manage so oldest is used first • Periodically checked for condition

  30. Empty Cylinders • Proper procedure: • Considered full until identified as empty by user • Labeled “M T” or tagged when empty • Empty cylinders are returned to supplier • Leave 25 psig minimum pressure • Do not leave empty cylinders attached to pressurized system

  31. Section 4 Your Responsibilities

  32. Your Responsibilities • Your responsibilities include: • Knowing content of cylinders used • Regulator, valve, and hose maintenance • Following rules for storage, transportation, and use • Knowing what to do in an emergency

  33. Additional Information • Compressed Gas Safety: General Safety Guidelines, Montana Department of Labor and Industry • Air Products Safety Grams • http://www.airproducts.com/index.asp • Compressed Gas Association (CGA) • www.cganet.com Compressed Gases Self Inspection Checklist, National Institute for Occupational Safety and Health (NIOSH) Safety Checklist Program for Schools

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