Successful Recovery Boiler Combustion Safeguard Systems

Numerous auxiliary fuel explosions in recovery boiler furnaces have caused heavy losses of life and property. Combustion safeguard systems involve a complex, exacting assemblage of electronic safety interlock control systems. Success demands the involvement of qualified electrical and electronics engineers in their development, application, testing, and maintenance. Environmental moisture, corrosion, vibration, and mechanical hazards make special electrical applications necessary. A successful safeguard system will take shutdown action without fail when monitored conditions deviate from preestablished safe limits, but high-quality systems for reliability are essential because competitive operation cannot tolerate frequent nuisance outages.