LSA offers combustion equipment compliance testing with the most comprehensive, consistent and disciplined third party combustion system equipment inspection and testing program.

Explosion and fire are inherent hazards associated with fuel-fired equipment such as boilers, ovens, dryers, and furnaces. A critical time is during startup or shutdown when the equipment is in transition. 

A fuel explosion occurs when an accumulated combustible mixture is ignited within a confined space, such as an oven or furnace enclosure. Fires occur when combustible products or the accumulation of combustible residue are ignited, such as inside ovens and exhaust ducts. All fuel-fired equipment must be equipped with a combustion safeguard system to reduce the potential for explosion or fire, which could lead to property damage and loss of production. Safety controls must be in good working order, properly set, maintained, and tested to assure reliable operation.

There are many basic safety devices and interlocks, depending on the complexity of the fuel-fired equipment and often includes:

• Main burner fuel safety shutoff valves (SSOVs)
• Flame safeguard system (scanner or 
• Main flame and pilot flame establishing period

• Fuel oil pressure and atomizing air pressure interlocks
• Combustion airflow interlocks
• Pre- and post-firing purge cycle (time and airflow volume)
• Low fire start interlocks • Low water level (steam boilers)
• High or low gas pressure interlocks
•High-temperature interlocks

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+603-8071 7642



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