804 Natural Gas And Carbon Monoxide

Question 1

Who has the legal responsibility to deal with gas leaks (including carbon monoxide)

Answer 1

Gas Authority

Question 2

What does the use of DIM do

Answer 2

The only true indicator of natural gas-

Detection
Identification
Monitoring

Question 3

Wind detection is quoted as coming from eg northerly wind. True or false

Answer 3

True

Question 4

What is the minimum distance appliances should be situated from a suspected gas leak

Answer 4

25metres

Question 5

Should you position crews directly in front of a building suspected of a gas leak

Answer 5

No. 45 degree ideally

Question 6

For high pressure pipeline gas leaks what is the minimum hazard zone

Answer 6

200metres

Question 7

For “under” congested conditions what is the minimum hazard zone

Answer 7

600metres

Question 8

What must the IC do when discovering a high pressure pipeline gas leaking (2)

Answer 8

Inform national grid and request the supply be shut down.

Do bot make an attempt to control the leak

Question 9

If a high pressure gas leak is found on fire should the crews be ordered to extinguish the fire

Answer 9

No. Protect surrounding risks and await national grid to shut supply down

Question 10

Where there is an uncontrolled leak from a mass storage site what is the hazard some and who must yiu contact for advice

Answer 10

1000 metres

HMEPO

Question 11

Who might the IC seek to question when searching for a gas leak (3)

Answer 11

Site employees (particularly engineering)

Safety staff

Reliable witnesses

Question 12

Minimum ppe for crews shutting off gas supply

Answer 12

Full PPE and BA

Question 13

Before entering a building what safety steps should the IC take

Answer 13

Shut off utilities
Vent property
PPE
DIM
Intrinsically safe equipment 
BARIE not handheld

Question 14

Does the LFB have powers of entry for a gas leak (in particular for securing a gas supply)

Answer 14

No.

The GA do
**unless exceptional public safety issue

Question 15

If at a level 1 has incident and a rescue is to be made what must the IC do

Answer 15

IC to priority make incident level 2

Question 16

Shutting down an incident involving gas who does the IC hand over to

Answer 16

GA

Question 17

Where the gas supply has been shut off before the arrival of brigade what must the IC do (2)

Answer 17

Attach tag 5288 on the valve

Contact control to inform duty of care is passed to them

Question 18

What words are used to describe gas/electric equipment to control

Answer 18

APPARATUS

Question 19

When might a Fire Investigation Team might be contacted to attend a gas leak incident

Answer 19

When the GA want to investigate if they are at fault

Question 20

Crews are only to remain on site for public safety. A request to remain on site to provide cover fir the GA should be authorised by whom

Answer 20

Duty DAC (chargeable service)