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:
Holders, “Resolution of Generic Issue 70, ‘Power- Operated Relief-Valve and Block Valve Reliability,’ and Generic Issue 94, ‘Additional Low-Temperature Overpressure Protection for Light-Water Reactors,’” Generic Letter 90-06, June 25, 1990. 3.2.2-18 Revision 3 – July 2016 Table A-1 Supplemental Guidance for Classification and Application of Quality Standards System or Component Quality Group References Combustible gas control system B (a) SRP Section 6.2.5, RG 1.7 Compressed air systems required to perform a safety function C SRP Section 9.3.1 Containment isolation system: A/B (b) SRP 6.2.4 Penetrations including associated piping and isolation valves A/B (b) RG 1.141 Instrument lines penetrating containment B (c) RG 1.11 Isolation barriers comprised of closed systems inside containment B (b) SRP 6.2.4 Isolation barriers comprised of closed systems outside containment B (b) SRP 6.2.4 Closed systems in secondary containment proposed as boundaries to preclude bypass leakage B (d) BTP 6-3 Emergency diesel engine: Fuel oil storage and transfer system C(e) SRP Section 9.5.4, RG 1.137 Cooling water system C SRP Section 9.5.5 Starting system C SRP Section 9.5.6 Lubrication system C SRP Section 9.5.7 Combustion air intake and exhaust system C SRP Section 9.5.8 Equipment and Floor Drainage System C (f) SRP Section 9.3.3 Gas Treatment Systems considered as engineered safeguards systems B Plant ventilation systems for areas such as the control room and engineered safety features rooms C PWR pressurizer PORVs, associated components, and block valves (g) GL 90-06 Radioactive waste management systems (h) RG 1.143 Safety-related instrument sensing lines B,C (i) RG 1.151 Ultimate heat sink and supporting systems C (j) SRP Section 9.2.5, RG 1.72 Main steam, essential portions B SRP Section 10.3 Circulating water system D SRP 10.4.5 PWR safety-related steam generator blowdown B SRP 10.4.8 NOTES: a. RG 1.7, “Control of Combustible Gas Concentrations in Containment,”