Document: NUREG-0800
Document ID: 3ab8ae04-e11b-4993-a907-f644301c5af2
Document Type: srp
Title: MAIN STEAM SUPPLY SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070577.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.3
CFR Part: 
CFR Title: 

Content:
missiles, Appendix Positions 2 and 4. 2. General Design Criterion 4, with respect to safety-related portions of the system being capable of withstanding the effects of external missiles and internally generated missiles, pipe whip, and jet impingement forces associated with pipe breaks, and the position of Regulatory Guide 1.115 as related to the protection of structures, systems, and components important to safety from the effects of turbine missiles, Position C.1. The system design should adequately consider water (steam) hammer and relief valve 45 discharge loads to assure that system safety functions can be achieved and should assure that operating and maintenance procedures include adequate precautions to avoid water (steam) hammer and relief valve discharge loads. The system design should also 46 include protection against water entrainment. 3. General Design Criterion 5, as related to the capability of shared systems and components important to safety to perform required safety functions. 4. General Design Criterion 34, as related to the system function of transferring residual and sensible heat from the reactor system in indirect cycle plants, and the following: a. The positions in Branch Technical Position RSB 5-1 as related to the design requirements for residual heat removal. b. Issue Number 1 of NUREG-0138 (Reference 13) as related to credit being taken 47 for all valves downstream of the main steam isolation valves (MSIV) to limit blowdown of a second steam generator in the event of a steam line break upstream of the MSIV. 10.3-7 DRAFT Rev. 4 - April 1996 5. 10 CFR Part 50, §50.63, "Loss of All Alternating Current Power", as it relates to the ability of a plant to withstand for a specified duration and recover from a station blackout. Acceptance is based on meeting Regulatory Guide 1.155 as it relates to the design of the MSSS. 48 Technical Rationale:49 The technical rationale for application of the above acceptance criteria to the MSSS is discussed in