Steam Distribution System

Steam distribution systems incorporate safety measures such as pressure relief devices (PRVs), temperature and pressure monitoring, and steam trap maintenance.  Other safety systems tend to be around the boiler.  

Common challenges in steam distribution systems include steam leaks, condensate buildup, pressure fluctuations, water hammer, inadequate insulation, control valve malfunctions, problematic desuperheaters, and improper sizing or layout of the system. Regular maintenance, inspections, and monitoring help address these challenges.

Steam traps are devices used in steam distribution systems to remove condensate and non-condensable gases while allowing the passage of steam. They are designed to accumulate condensate and release it in slugs, so the frequency of their action depends on the immediate steam flow and heat loss in the system. Ideally, they should be matched to the application so they operate within a comfortable frequency determined by the manufacturer. After several years in service, many exhibit wear and can malfunction, hence the need for Emerson’s acoustic transmitter to ensure they are cycling correctly.  Regular maintenance is necessary to ensure a steam trap’s proper functioning and prevent energy losses and equipment damage.

Steam pressure reduction is the lowering of the steam pressure at the boiler plant by means of the pressure setting on the boiler plant master control. 

Steam pressure reduction affects mainly the high-pressure part of the steam system. Within practical limits, pressure-reducing valves (PRVs) will adjust the pressure at lower levels to the previous set points. This means that most of the savings' benefits from pressure reduction occur in the high-pressure section of the steam system.