Document: NUREG-0800
Document ID: c3ba2b86-3805-4144-9775-cd35b7bffe2d
Document Type: srp
Title: SYSTEM QUALITY GROUP CLASSIFICATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1608/ML16084A884.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.2
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for mechanical engineering reviews Secondary -- Organizations responsible for the review of component performance and testing I. AREAS OF REVIEW Nuclear power plant systems and components important to safety should be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be performed. Important to safety structures, systems, and components (SSCs) are those SSCs that provide reasonable assurance that the facility can be operated with adequate protection to the health and safety of the public. Described herein is an acceptable, primarily deterministic, approach to classify fluid systems important to safety and identify their applicable construction codes and standards depending on the system or component function and relative importance to safety. The deterministic approach should be complemented, where appropriate, by applying insights from the design-specific probabilistic risk assessment (PRA). The specific areas of review are as follows: 3.2.2-2 Revision 3 – July 2016 1. The applicant’s classification design criteria for pressure-retaining components and their supports such as pressure vessels, heat exchangers, storage tanks, pumps, piping, and valves in fluid systems important to safety. Excluded from this review are items that do not provide pressure integrity functions or their supports, including structures; internal parts of mechanical components such as shafts, seals, impellers, packing, and gaskets; fuel, electrical, and instrumentation systems; electrical valve actuation devices; and pump motors. Non-pressure-retaining items may have unique requirements that are not included in this Standard Review Plan (SRP) section or its associated Regulatory Guide (RG) 1.26, “Quality Group Classifications and Standards for Water-, Steam-, and Radioactive-Waste-Containing Components of Nuclear Power Plants,” (e.g., requirements in the