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:
the main steam line. Also added new guidance concerning the seismic classification of portions of the main steam lines for evolutionary BWRs without a MSIVLCS. 63. NRC metrication policy Added the SI equivalent of 350 F and reformatted per the NRC Metrication policy. See attached conversion documentation. 64. Editorial Added "the" to the sentence to place the proper article before RHR. 65. Editorial Changed "connecting" to "connected" for clarification. All other sections refer to MSSS branch lines as connected piping. 66. NRC metrication policy Added the SI equivalent of pounds per hour and reformatted per the NRC metrication policy. Since this was a simple unit conversion which involved no calculations, no conversion documentation was created. SRP Draft Section 10.3 Attachment A - Proposed Changes in Order of Occurrence Item Source Description DRAFT Rev. 4 - April 1996 10.3-24 67. Integrated Impact 560 Added requirements concerning (N-1) loop operation to subsection III, Review Procedures. 68. Editorial, Reference verification Changed SRP Section number from 3.6 to 3.6.1 to show the proper reference. 69. Editorial For consistency with other SRP Sections, "steam hammer" was changed to "water (steam) hammer". As noted in NUREG 0933, SRP 10.3 was revised to add reference to steam hammer to resolve USI A-1 "Water Hammer". NUREG 0933 cites NUREG 0927 as the document which resolved the water hammer issue. NUREG 0927 refers to events in the MSSS as "steam (water) hammer". Besides Section 10.3, four other SRP Sections refer to these events as "water (steam) hammer" (sections 3.9.3, 5.4.6, 5.4.7, and 6.3). 70. Integrated Impact 561 Added a Review Procedure for compliance with Regulatory Guide 1.155. 71. SRP-UDP Guidance, Implementation Added standard paragraph to address application of of 10 CFR 52 Review Procedures in design certification reviews. 72. Editorial Changed "his" to "the" for clarity and consistency with other sections. 73. Editorial Changed "connecting" to