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LFB Policy Notes & FRU (2020) > Cylinder Procedure (PN 376) > Flashcards

Cylinder Procedure (PN 376) Flashcards

1
Q

How do you spell asettlene?

A

A C E T Y L E N E

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2
Q

At a cylinder incident what is our first consideration?

A

LIFE

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3
Q

Failure of a steel cylinder will result in fragments being thrown up to how many metres?

A

200 Metres

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4
Q

How big might a fireball of flammable gases be if a cylinder fails?

A

25 Metres

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5
Q

What is a BCGA CP?

A

British Compressed Gas Association Competent Person

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6
Q

What does CAP stand for?

A

Cylinder Assessment Process

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7
Q

Where is their a CAP aide memoir?

A

BA Aide Memoir No 6

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8
Q

BA must be worn within how many metres of a cylinder?

A

25 Metres

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9
Q

Which cylinders, that are alight, may be turned off?

A

Those alight from the valve group inlet/outlet, not those alight from the neck of the cylinder

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10
Q

What should a FF consider USING when approaching cylinders? And what are they likely to set up?

A

Substantial Cover

A Cooling Jet

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11
Q

For how long must an Acetylene cylinder be cooled?

A

Min 1 hour then CAP tested

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12
Q
  • At what temperature does a steel cylinder lose its tensile strength? *
A

300 degrees C

200 - 250 for Aluminium

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13
Q

How is an Acetylene cylinder designed to fail?

A

In Ductile mode - along its length

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14
Q

When are cylinders at greatest risk of failure?

A

When there is direct flame impingement

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15
Q

What are the four types of cylinder construction?

A 
Welded cylinders (2 steel parts welded together)
Drawn steel (1 part)
Aluminium Cylinders 
Composite Cylinders (resin and woven fabric sometimes wrapped around an aluminium lining
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16
Q

Gases can be classified into 4 types of hazard, what are they?

A

Flammable
Asphyxiant
Corrosive
Toxic

(FACT)

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17
Q

What 3 particular types of premise might be reasonably assumed to contain cylinders?

A

Railway Arches
Vehicle Workshops
Building Sites

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18
Q

Why apply a cooling Jet?

A

It restores the steels Tensile Strength

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19
Q

What 2 actions must be considered when dealing with cylinders not yet involved in fire?

A

Remove and protect with Jets

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20
Q

What 3 things may indicate that a cylinder has not been involved in fire?

A

Intact paper labels and plastic rings
Undamaged hoses
Paint not blistered or blackened

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21
Q
  • Composite cylinders are most commonly used for domestic purposes such as BBQs. What happens if a composite cylinder fails? *
A

Intensifies the fire

22
Q
  • Is the Hazard Zone the same as the Exclusion Zone? *
A

No

23
Q

What should a Cylinder involved Message include? (5)

A

…. x …… kg ………….. cylinders involved
Cylinder procedure being implemented
RVP

24
Q

Describe the Cylinder Assessment Procedure?

A

Stop cooling after 1 hour:

Assess with the TIC and record Temperature
If no hot spots or violent steaming leave for a further 15 minutes and then apply a momentary spray. This process is repeated for a total of 4 times (1 hour)

If it fails at any time reapply cooling Jet for 1 hour and start again

25
Q

After the 1st CAP test who can reduce the HZ and why?

A

The HMEPO but only to carry out URGENT fire service work.

3 more tests must be completed.

26
Q

What is Aircooling?

A

Cylinder left to stand (requires more frequent CAP tests)

27
Q

Does steam coming from the surface of a cylinder always indicate a problem?

A

No, on a warm day compare to other metal surfaces

28
Q

If a ‘Hot spot’ is identified during CAP process what should be done?

A

Water Cooling recommenced

29
Q

What colour denotes Acetylene?

A

Maroon

30
Q

What Colour denotes Oxygen?

A

White

31
Q

What colour denotes Argon?

A

Dark Green

32
Q

What colour denotes Nitrogen?

A

Black

33
Q

What colour denotes Carbon Dioxide?

A

Grey

34
Q

What Colour denotes Helium?

A

Brown

35
Q

What Hazard property does bright green classify?

A

Inert

36
Q

What Hazzard property does Red classify?

A

Flammable

37
Q

What Hazzard property does pale blue classify?

A

Oxidising

38
Q

What Hazzard property does Yellow Classify?

A

Toxic

39
Q

What must a HMEPO complete at an Acetylene Cylinder incident and handover to subsequent HMEPO’s?

A

A log (4.29 appendix 7 of note)

40
Q

What might a cylinder key be used for?

A

To shut off a cylinder that is alight at the valve group

41
Q

Can mechanical shock to an Acetylene cylinder start decomposition?

A

No, but it can make it worse

42
Q

Is a leaking cylinder not involved in fire a hazmats incident?

A

Yes

43
Q

Who carries atmospheric monitoring equipment?

A

RRT (Rapid Response Team) and FRU. DIM

44
Q

What are the 3 ways that you can identify an Acetylene cylinder?

A

1) Intirely MAROON in colour
2) Identifying collar
3) Reflective Tape

45
Q

What is different in the marking of an Acetylene cylinder?

A

The whole cylinder is Maroon in colour

46
Q

The 200m exclusion zone for an Acetylene cylinder is maintained until there is no immediate danger of the cylinder failing. What 3 things must be ensured?

A

A) The cylinder is not reheated
B) The cylinder is not moved or disturbed during CAP
C) Cooling or monitoring of the cylinder continues until the cylinder passes CAP.

47
Q

Priority will be given to which members of the public once the HZ has been established?

A

Those in closest proximity to the incident.

48
Q

Which members of the public MAY be temporarily instructed to shelter indoors and away from windows or doors which are in line of site of the incident?

A

Those over 100m away but within the HZ or those refusing to leave their premises

49
Q

What functional Sector Commander Role might the IC consider using?

A

Hazard Zone Coordinator

50
Q

On the unexpected discovery of a dangerous cylinder should appliances and equipment be moved from the HZ?

A

No leave in situ. Life risk takes priority

LFB Policy Notes & FRU (2020) (33 decks)

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