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12 Cards in this Set
- Front
- Back
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What are the characteristics of a 45mm hose |
23m long 9kg 15 bar pressure |
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What are the characteristics of a 70mm hose |
23m long 15 bar pressure 15kg |
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What are the characteristics of a 90mm hose |
30m 15 bar pressure 23.5 kg Kept on hose laying unit |
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What are the characteristics of a 150mm hose |
5, 10 and 50 m lengths 4km kept on hvp Connected with a storz coupling |
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What are the characteristics of the hosereel |
22mm 18.3m long 4 lengths per side 2 sidea per appliance |
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What are the characteristics of the hard suction hose |
100 mm diameter 2.44 m long 2 lengths per appliance Metal spring runs internally |
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What rules do you need to follow to look after your hose |
Hose should be ramped when laid across road Hose should not be kinked when under pressure Hose should not be made up whilst frozen Hose should be under run and cleaned before stowing Hose should be rotated every 3 months between appliance and store |
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What do you need to do when a hose is damaged at an incident |
Use a hose bandage Make it up around male coupling Overhand knot both ends Damaged replaced with new asap |
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When is a hose tested? |
On acceptance After use Annually |
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How do you visually inspect a hose |
Check couplings Check wire bindings Check shrink cover Examine hose jackets Check existing repairs |
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How do you carry out a pressure test |
Obtain a satisfactory visual 2 firefighter branch, pump operator and safety officer present Connect each seperately to a pump with branch attached, expel air from hose Increase pressure to 15 bar slowly build pressure for 1 minute After 1 minute reduce pressure to 7 bar then inspect the hose for leaks |
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What are the requirements of a good hose? |
1. Should be reliable in use 2. Should be light and easy to handle, able to make up when wet or dry 3. Should be durable, high resistance to abraisions, easy to repair 4. Smooth surfaced internally to keep frictional loss to a minimum 5. Capable of withstanding pressure changes, shock 6. Resistant to burning, leaking, chemical damage or kinking when passed around bends/corners 7. Not stretch excessively when pressurised (5% max in length) + not sxpand excessively when pressurised (10% max in diameter) |
