- Heating Equipment
- Heat Exchanger
The dilution water for making a polythionic acid aqueous solution was changed from industrial water to pure water to lower the chlorine concentration in the piping.
Water that accumulated in the drain was removed before heating began. Steam tracing was strengthened to prevent condensation of moisture.
The gusset was remodeled into a structure in which thermal expansion is not restricted.
Careful management oversight of startup procedures is necessary to avoid stress corrosion cracking from occurring in hydrogen piping, since it can result in a serious accident. The chlorine concentration can be high in industrial water, and it is desirable to avoid treatment using water with a high chlorine concentration.