Design Change and Operational Consideration of the HVAC System during Nuclear Power Plant Decommissioning

Table 1

HVAC systems reclassified for decommissioning.

HVAC system		Operation required		Immediate demolition	Modification required
		Transition period	Decommission-ing phase
Primary	Control room	√			√
	ECCS equipment area			√
	RCB	√	√		√
	RCB purge	√	√		√
	Aux building	√			√
	Compound building	√
	Fuel handling building	√
	C-1E electrical equipment area			√
	ESW intake structure	√
Secondary	Turbine generator building	√	√		√
	Miscellaneous building	√
	Cold machine shop	√
	CW intake structure	√
	Low and medium rad waste interim building	√	√
	Technical support centre			√