NB/T 20013-2010 (English Version) PDF

Scope: This standard specifies the integrity assessment method for nuclear pressure-bearing equipment containing defects in service, including linear elastic fracture assessment, elastic-plastic fracture assessment, plastic failure assessment and crack fatigue growth assessment. This standard is applicable to the integrity assessment of in-service steel nuclear safety level 1 pressure-bearing equipment containing defects in pressurized water reactors. The integrity assessment of nuclear safety level 2 and level 3 pressure equipment can be used as a reference. For irreparable defects dis overed in pre-service inspection, with the consent of the owner and relevant departments, assessment can be made with reference to this standard. This standard does not apply to the evaluation of pumps and valves in nuclear pressure equipment, as well as to newly constructed nuclear pressure equipment accepted under quality control standards.

NB/T 20013-2010 history

2010 NB/T 20013-2010 Structural integrity assessment for nuclear pressure-retaining components containing defects