CYLINDERS

Question 1

define a cylinder

Answer 1

any vessel containing a gas or liquid under pressure

Question 2

list 4 types of cylinder construction

Answer 2

welded, drawn steel, aluminium, composite

Question 3

at what temp. do steel and aluminium cylinders lose their tensile strength?

Answer 3

steel - 300, aluminium 200-250

Question 4

what is the initial hazard zone for a steel cylinder that has been substantially heated or subjected to direct flame impingement?

Answer 4

200 m

Question 5

what can happen to a composite cylinder when involved in a direct flame impingement?

Answer 5

become porous - evident by a substantial increase in the size of the fire as it will be fed by its contents

Question 6

what is the initial action if a cylinder is discovered in a fire, regardless of contents?

Answer 6

extinguish fire affecting cylinder and apply a cooling spray directly onto any affected cylinders from behind cover

Question 7

what are the actions where a composite cylinder is involved and has failed?

Answer 7

contents should be allowed to burn off, before extinguishing the fire. Extinguishing prior to this will allow a potential build up of unburnt gasses

Question 8

what 4 things need to be established to consider cylinders are not in immediate danger of failing and therefore not necessary to implement a 200m hazard zone?

Answer 8

1, fire has been extinguished. 2, the cylinders are definitely not acetylene. 3, all the cylinders present have been located. 4, the cylinders involved are receiving direct cooling

Question 9

what does the CAP consist of?

Answer 9

stop application of cooling water after one hour. A) monitor the cylinder with a tic and record temp. B) watch for any violent steaming or rapid drying of cylinder surface C)leave cooling water off for 15 min. Apply a momentary spray of water then shut off. this must be done 4 times, which should take 1 hour

Question 10

how can acetylene cylinders be recognised?

Answer 10

marron paint, only compressed gas cylinder, does not have coloured shoulders, paper label or ident tape

Question 11

BA is to be worn within what dist. of a cylinder?

Answer 11

25m

Question 12

do composite cylinders contain acetylene?

Answer 12

no

Question 13

how are composite cylinders constituted?

Answer 13

1) gas barrier layer - chemical resistant thermoplastic. 2) Composite layer - major load carrying layer, reinforced fibreglass 3) outer protective layer - impact protection, designed to look attractive, and easy to carry and stack

Question 14

who has specific training in cylinders and hazard zone maintenance and should be consulted during the incident?

Answer 14

HMEPO