Document: NRC Regulatory Guide
Document ID: cf1737d6-2a8a-4765-aaf5-f5f2a617ef91
Document Type: regulatory_guide
Title: Design of Main Steam Isolation Valve Leakage Control Systems for Boiling Water Reactor Nuclear Power Plants
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740263.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.96
CFR Part: 
CFR Title: 

Content:
ecommends that applicants and licensees install a supplemental leakage 1.96-3 control system. Leakage control systems for these plants should be designed in accordance with the recommend ations in the regulatory position of this guide to the extent practical considering the stage of plant design and construction. The system provided for each plant and the schedule for installation will be reviewed on a case-by-case basis. 3. In the case of boiling water reactor plants of the BWR 6/Mark III design (or subsequent BWR design), including and subsequent to the first BWR 6/Mark III (i.e., the Grand Gulf project), the staff recommends that applicants and licensees install a supplemental leakage control system to ensure the isolation function of the main steam isolation valves. Leakage control systems for the plants should be designed in accordance with the recommendations in the regulatory position of this guide. TABLE 1 LIST OF BWR PLANTS SECTION D.A PLANTS Dresden I Big Rock Point Humboldt Bay Lacrosse Oyster Creek Nine Mile I Dresden 2 Millstone 1 Dresden 3 Quad Cities 1,2 Browns Ferry 1,2 Monticello Vermont Yankee Peach Bottom 2,3 Cooper Browns Ferry 3 Pilgrim 1 Hatch 1 Brunswick 1,2 SECTION D.2 PLANTS FitzPatrick Duane Arnold Fermi 2 Zimmer Hatch 2 Hanford 2 Shoreham LaSalle 1,2 Susquehanna 1,2 Hope Creek 1,2 (ex. Newbold Island) Limerick 1,2 Bailly Nine Mile 2 DATE OF ACRS CP REPORT 7/55 3/60 6/60 12/62 8/64 10/64 11/65 3/66 8/66 12/66 3/67 4/67 6/67 10/67 3/68 5/68 4/68 5/69 10/69 1/70 12/69 & 2/11/70 2/71 9/71 11/71 10/72 12/69 & 2/70 12/71 4/72 8/71 & 2/74 8/71 10/71 7/73 1.96-4 CP ISSUED 5/56 5/60 11/60 3/63 12/64 4/65 1/66 5/66 10/66 2/67 5/67 6/67 12/67 1/68 6/68 7/68 8/68 9/69 2/70 5/70 6/70 9/72 10/72 12/72 3/73 4/73 9/73 11/73 Pending 6/74 5/74 6/74 APPENDIX A SUPPLEMENTAL DESIGN FEATURES FOR QUALITY GROUP A PORTION OF LEAKAGE CONTROL SYSTEM PIPING This appendix provides supplemental design features for any portion of piping for a leakage control system