Gases - flammable

This guidance is intended to increase awareness of the risks and the precautions to be taken when flammable gases such as Acetylene, Hydrogen and Methane.

On this page

• Flammable Gas Safe to Connect Certificate 
• Flashback arrestors

Flammable Gas Safe to Connect Certificate

---

This will be issued to confirm that:

• a risk assessment has been conducted and is available at the point of use;
• the people working with the flammable gas are competent to use flammable gas and there is a record of the information, instruction and training they have received;
• the location where the gas is to be used is suitable;
• cylinders of flammable gas are located separately from sources of ignition. If this is not possible then a suitable enclosure must be used.

Download Flammable Gas Safe to Connect Certificate

Flashback arrestors

---

Flashback arrestors must be fitted to cylinders delivering flammable gases. Flashback arrestors should be:

• regularly inspected to confirm they are free from damage and contamination;
• tested and inspected annually by a competent person to ensure they are functioning correctly. BOC carry out the annual test and inspection on behalf of departments;
• replaced every 5 years.

Managers responsible for the work with flammable gases should ensure that flashback arrestors are inspected, tested and replaced at the intervals specified.