FAQ
Frequently asked questions
What you need to know about boiler deposits, heat exchanger efficiency loss, chemical washing in industrial plants, and cleaning frequency.
Why is chemical cleaning necessary?+
Iron, calcium, magnesium, sodium, and silica in boiler water form hematite, magnetite, and silicate deposits on pipe surfaces. This layer reduces heat transfer, causes overheating and damage to the pipe metal, and leads to production loss. A deposit of roughly 80 µm can cause at least 2% energy loss.
How often should chemical cleaning be performed?+
Contamination levels are determined through deposit quantity testing. Heavily fouled systems should be cleaned immediately; moderately fouled systems are planned for the first overhaul period. Clean systems are monitored during annual overhauls by taking pipe samples to track fouling growth.
Which standard does Proses Commissioning Technologies follow?+
All chemical cleaning and steam blowing processes are planned, executed, and reported in accordance with the German VGB S-513 standard.
What equipment do you use for field service?+
We operate with a 2×600 m³/h – 15 bar inverter-driven pump station, mixing tank, acid dosing pumps, a 3.4 MW steam generator, steam injection system, cross-flow valve station, and a field laboratory.
Which equipment receives chemical washing in industrial plants?+
Chemical washing is applied to boilers and steam drums, heat exchangers, condensers, feedwater heaters, process piping, steam distribution and condensate systems, and evaporator and crystallization circuits. Alkaline boil-out, acid cleaning, and passivation procedures are selected based on equipment type and fouling profile.
When should chemical cleaning be planned?+
It is planned before commissioning to remove construction debris, during overhauls when efficiency declines, or when pipe sample analysis shows growing deposits. Heavily fouled systems should not be deferred; moderate fouling should be scheduled for the next suitable maintenance window.