
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.
This issue is covered in USI A-46, "Seismic Qualification of Equipment in Operating Plants."
[1] NUREG-0471, "Generic Task Problem Descriptions (Categories B, C, and D)," U.S. Nuclear Regulatory Commission, June 1978.
Page Last Reviewed/Updated 06/24/2025