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13 Cards in this Set
- Front
- Back
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Define cylinder. |
Any vessel containing gas or liquid under pressure. |
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Commercial gases can be stores and transported in 4 ways... |
Compressed (non liquefied). Liquefied. Refrigerated. Dissolved. |
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Examples of non liquefied gases (compressed). |
Oxygen, nitrogen, helium, air in a BA cylinder. |
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Examples of liquefied gases. |
Propane and butane. |
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Higher the pressure of a liquid the higher the boiling point, true or false? |
True. |
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Critical temperature defined as. |
The temperature at which a gas can no longer be liquefied with pressure alone. |
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Critical pressure. |
The pressure which is needed to liquefy a gas at its critical temperature. |
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What temperature do acetylene cylinders start to chemically decompose? |
300 degrees. |
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Different types of cylinder construction. List 5. |
Welded cylinder. Drawn steel. Aluminium cylinders. Composite cylinder. Composite cylinder aluminium lined. |
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Cylinder contents hazards. List 6. |
Flammable. Oxydising gases. Toxic. Asphyxiant. Corrosive. Cyrogenic. |
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Three main reasons why cylinders fail in fire. |
Over pressurisation. Heating leading to structural failure. Resin In Composite cylinders breaking down and cylinder starts leaking. |
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BLEVE stands for? |
Bolining Liquid Expansion vapour explosion. When a liquidfoed gas cylinder is heated and the contents expands and turns to gas. Pressure of gas released can cause an explosion. |
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Procedure for colling acetylene cylinders. |
Cooled in situ for one hour. Cylinder assessment process (TIC Wet tests). If CAP is failed another hour of cooling. CAP is passed cylinder hand over form completed. |
