• Recovery boiler tubes are subject to harsh conditions: furnace temperatures up to 2,500°F from combustion on one side, insulation on the other side, and pressurized free flowing water inside the tubes

• These circumstances make boiler tubes susceptible to significant erosion and corrosion that threatens safety and presents environmental hazards

• Smelt water explosions caused by erosion can be deadly or lead to the release of toxic gases into the environment

• Shutting down the plant for regular tube inspection, is costly and substantially reduces overall mill productivity

• Many boiler leaks go undetected for long periods of time. Small leaks will grow in size and/or cause larger, more destructive leaks on adjacent boiler tubes

Corrosion and erosion
caused by harsh recovery
boiler conditions

• Safety Issues: Early detection of high pressure leaks so that smelt-water explosions can be avoided

• Cost Issues: Advanced notice of leak problems to minimize costs due to damage

• ALL™ is a leak detection and warning system designed for on-line monitoring of pressurized systems and valves

• ALL™ can detect leaks as small as 5 mils--long before the human ear can hear them

• ALL™ tells you that problems are developing before the situation becomes serious