Document: NUREG-0800
Document ID: 243e1ce7-857c-48e4-9eb7-6125311da9be
Document Type: srp
Title: RESIDUAL HEAT REMOVAL (RHR) SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070437.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.7
CFR Part: 
CFR Title: 

Content:
he valves shall be 87 safety-related.88 7. The cooldown function is to be reviewed to determine if it can be performed from the control room assuming a single failure of an active component, with only either onsite or offsite electric power available. Any operation required outside of the control room is to be justified by the applicant. Like Item 56, the initial cooldown for PWRs is to be 89 reviewed by ASB SPLB.90 8. By reviewing the system description and the P&IDs, the reviewer confirms the RHR system satisfies the pressure relief requirements of Branch Technical Position RSB 5-1 (Ref. 5).91 9. By reviewing the piping arrangement and system description of the RHR system, the reviewer confirms that the RHR system meets the requirements of GDC 5 (Ref. 2)92 concerning shared systems. 10. The RSB SRXB reviewer contacts the ASB SPLB reviewer in conjunction with 93 94 histhe review of the RHR system heat sink and refueling system interaction to 95 interchange information and assure that the reviews are consistent with regard to the interfacing parameters. For example, the ASB SPLB review determines the maximum 96 service or component cooling water temperature. The RSB SRXB reviewer then 97 reviews the RHR system description to determine that this maximum temperature has been allowed for in the RHR system design. 11. The RSB SRXB reviewer contacts his counterpart in the ICSB HICB reviewer to 98 99 100 obtain any needed information from their review. Specifically, ICSB HICB confirms 101 that automatic actuation and remote-manual valve controls are capable of performing the functions required, and that sensor and monitoring provisions are adequate. The 5.4.7-13 DRAFT Rev. 4 - April 1996 instrumentation and controls of the RHR system are to have sufficient redundancy to satisfy the single failure criterion. 12. The RSB SRXB reviewer contacts his counterpart in the (SCSB)CSB reviewer so 102 103 104 that the information needed concerning their reviews will be interchanged.