CENWAT Gas Safe Regulations & Commissioning 4

Question 1

What is RIDDOR and does it apply to gas incidents?

Accepted Answer

Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 — yes, dangerous gas escapes and CO incidents must be reported

Answer

RIDDOR 2013 requires reporting of work-related injuries, diseases and dangerous occurrences. Dangerous occurrences including serious gas escapes and CO incidents that result in injury must be reported to the HSE.

Question 2

What is a Gas Safety Warning Notice?

Accepted Answer

A formal notice issued by a Gas Safe engineer to the property occupier when an immediately dangerous or at risk situation is found, describing the fault and required action

Answer

A Gas Safety Warning Notice is issued by the attending engineer when a dangerous or at risk gas situation is found; it describes the fault, the safety classification, the required action, and must be signed by the occupier.

Question 3

What is the purpose of a soundness test as distinct from a tightness test?

Accepted Answer

In modern Gas Safe terminology they refer to the same concept — testing for leaks in the gas installation pipework

Answer

In current Gas Safe and IGEM/UP/1B guidance, tightness test and soundness test are used interchangeably to describe the pressure test of the gas installation to confirm it is free of leaks.

Question 4

What is the purpose of IGEM/UP/1B in the gas industry?

Accepted Answer

It is an industry standard providing guidance on tightness testing and direct purging of small low-pressure domestic gas installations

Answer

IGEM/UP/1B is the Institute of Gas Engineers and Managers standard for domestic gas installation purging and tightness testing; it specifies procedures engineers must follow for safe commissioning of domestic gas systems.

Question 5

How is a domestic gas installation purged of air before lighting an appliance?

Accepted Answer

Following IGEM/UP/1B, the installation is purged at each appliance by releasing gas briefly to displace air, with precautions against ignition

Answer

IGEM/UP/1B specifies a controlled purging procedure where gas is released in small quantities at each appliance point to displace air from the pipework, with precautions to prevent accumulation of a flammable mixture.

ACS CENWAT Practice Test

ACS CENWAT Practice Test

CENWAT Gas Safe Regulations & Commissioning 4