Item B-121: Seismic Qualification of Electrical and Mechanical Equipment

DESCRIPTION

The seismic qualification of complex electrical and mechanical components has undergone rapid changes in the past several years. Revisions in industry standards (IEEE 344) have resulted in the need to audit the

qualification programs of NSSS vendors and architect/engineers to ascertain if components previously qualified

using older requirements meet the new requirements. This NUREG-0471[1] task will include: (1) revising SRP[2] Sections 3.9.2 and 3.10 to combine pertinent material, (2) continuing the generic audit of NSSS vendors and architect/engineers, and (3) compiling a listing of all equipment considered to be adequately qualified and identifying the level for which the qualification is acceptable.

CONCLUSION

This issue is covered in USI A-46, "Seismic Qualification of Equipment in Operating Plants."


 

 

Page Last Reviewed/Updated 06/24/2025