Where should the flashback arrestors be installed?
Where should a flashback arrestor or reverse flow-check valve be placed? NS legislation requires a flashback arrestor to be located “between the torch and the fuel gas and oxygen supply”.
Which cylinders must use flashback arrestors?
7. What gases require flashback arrestors? There is potential for flashback to occur with any oxy-fuel system, whether you use oxy-acetylene or oxy-LPG (oxy-propane). The flashback can occur on either the oxy or the fuel gas line, which is why FBAs should be fitted to each gas line.
How can flashback arrestors be prevented?
There are several things you can do to help prevent flashbacks, fires and explosions:
- If using acetylene, keep the pressure below 15 pounds.
- Purge your hoses before lighting the torch.
- Never light your torch with a mixture of fuel and oxygen.
- Check valves should be installed on both torch inlets and operating properly.
Do you really need flashback arrestors?
It protects the user and equipment from damage or explosions. These devices are mainly used in industrial processes where oxy-fuel gas mixtures are handled and used. Flashback arrestors as safety products are essential to secure the workplaces and working environment.
Which 3 of the following do most flashback arrestors have?
Flashback arrestors both quench the flame and close off the gas supply. Most flashback arrestors are fitted with a non-return valve, flame arrestor and thermal cut-off valve which closes if the arrestor becomes overheated.
When should flashback arrestors be used?
A flashback arrestor or flash arrestor is a gas safety device most commonly used in oxy-fuel welding and cutting to stop the flame or reverse flow of gas back up into the equipment or supply line. It protects the user and equipment from damage or explosions.
What is difference between NRV and flashback arrestor?
A flashback arrestor should not be confused with a non-return valve, which has no particular flame stopping properties. A non-return valve can reduce the probability of a flashback, as it serves to prevent reverse flow of oxygen into fuel lines and fuel into oxygen lines.