| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard | 
			| NB/T 20497-2018 | English | RFQ | ASK | Days<=3 | (Technical Regulations for Rainwater Drainage in Nuclear Power Plants) | NB/T 20497-2018 | Valid | NB/T 20497-2018 |