Standard For Flash Back Arrestor And Hose For Gas Cylinders
The standards for flashback arrestors and hoses for gas cylinders are crucial for safe handling and use of gas equipment. Some countries have Standards specifically for flashback arrestors and others can draw parallels standards and general safety practices.
Flashback Arrestors
- Purpose: Flashback arrestors are designed to contain a flashback and prevent it from penetrating into upstream equipment, such as hoses, regulators, and gas cylinders.
- Standards: Mandates the use of flashback arrestors for oxy-fuel gas systems. These arrestors must comply with standards.
Key Features
- Non-Return Valve: Stops reverse flow of gas
- Sintered Flame Filter: Blocks the flame
- Thermal Activated Cut-Off Valve: Closes and stops gas flow in case of sustained flashback or backfire
Hoses for Gas Cylinders
- Standards: Hoses should be designed and tested for the specific gases mandate to be used.
- Safety Practices: Regular inspection and testing of hoses are essential to ensure they remain safe for use. Damaged or worn-out hoses should be replaced promptly.
Safety Recommendations
- Installation: Flashback arrestors should be fitted to both the regulator and the torch for optimum protection.
- Testing and Replacement: Flashback arrestors should be tested every 12 months and replaced after no more than 5 years or after a flashback incident.
- Compliance: Ensure that all equipment, including flashback arrestors and hoses, complies with relevant national standards and regulations ¹.
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