Document: NUREG-0800
Document ID: a2aa41aa-b86d-4157-91c2-f5d60d02c61c
Document Type: srp
Title: PRESSURIZER RELIEF TANK
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1007/ML100700178.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.11
CFR Part: 
CFR Title: 

Content:
e staff's safety evaluation report (SER). The reviewer also states the bases for those conclusions. The pressurizer relief tank system includes components and piping such as the pressurizer relief and safety valve connections to the tank, relief tank spray system piping, nitrogen supply piping, and piping leaving the tank to the cover gas analyzer and reactor coolant drain tank. The design of the pressurizer relief tank system conforms to nonnuclear safety and Quality Group D (see RG 1.26) requirements because the system is not necessary for safe shutdown, accident prevention, or accident mitigation. 1. The applicant=s design meets the requirements of GDC 4 as it relates to protection against the effects of earthquakes through conformance with Positions C.2 and C.3 of RG 1.29. Position C.2 indicates that the failure of nonsafety-related systems should not have adverse effects on safety-related systems. Position C.3 indicates that seismic Category 1 design requirements should extend to the first seismic restraint beyond the defined boundaries (i.e., the piping from the safety and relief valves to the first downstream restraint). 2. The applicant=s design meets the requirements of GDC 4 as it relates to the protection of safety-related equipment from adverse environmental effects and from missiles generated by rupture disc failure. This criterion is met because the system design prevents steam or water release to containment under any normal operating conditions or anticipated abnormal occurrences and because the tank is orientated such that the rupture discs do not pose a missile hazard to safety-related equipment. 5.4.11-8 Revision 4 - May 2010 For DC and COL reviews, the findings will also summarize the staff=s evaluation of requirements and restrictions (e.g., interface requirements and site parameters) and COL action items relevant to this SRP section. In addition, to the extent that the review is not discussed in other SER sections, the findings will summarize