ML18102A517
| ML18102A517 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 11/01/1996 |
| From: | Olshan L NRC (Affiliation Not Assigned) |
| To: | Eliason L Public Service Enterprise Group |
| References | |
| TAC-M95531, NUDOCS 9611080181 | |
| Download: ML18102A517 (5) | |
Text
Mr. Leon R. Eliason Chief Nuclear Officer & President-Nucl ear Business Unit Public Service Electric and Gas Company Post Office Box 236 Hancocks Bridge, NJ 08038 Novsnber 1, 199~
SUBJECT:
CHANGES TO TECHNICAL SPECIFICATION BASES, "PRESSURE/TEMPERATURE LIMITS," SALEM NUCLEAR GENERATING STATION, UNITS 1 AND 2 (TAC NOS. M95531 AND M95532)
Dear Mr. Eliason:
By letter dated May 31, 1996, you submitted proposed changes to the Technical Specification (TS) Bases for Salem Nuclear Generating Station, Units 1 and 2.
The proposed changes are in Section 3/4.4.9 for Unit 1 and Section 3/4.4.10 for Unit 2, "Pressure/Temperature Limits."
The changes were made to reflect the design basis transients for the pressurizer overpressure protection system (POPS) by addressing the start of an iritermediate head or high head Safety Injection pump with the reactor coolant system solid. Revision 15 to the Salem Updated Final Safety Analysis Report, dated June 12, 1996, ha~ been revised to include this information.
By letter dated February 13, 1995, we approved the use of the American Society of Mechanical Engineers Code Case N-514 for Salem which allows an additional ten percent margin in the Pressure/Temperature (P/T) limits contained in the TS.
Your analyses have demonstrated that the P/T limits in the TS, with the extra ten percent allowed by Code Case N-514, are not exceeded during the transients described in the proposed changes to the Bases.
Therefore~ the staff finds the proposed changes to the Bases acceptable.
Enclosed is a copy of the revised Bases Page B 3/4 4-11 for Unit 1 and B 3/4 4-12 for Unit 2.
9611080181 961101
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PDR ADOCK 05000272 I
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Docket Nos. 50-272/311
Enclosure:
As stated cc w/encl:
See next page DISTRIBUTION Docket File PUBLIC PDI-2 Reading SVarga JStolz LOlshan MO' Brien OGC Sincerely,
/S/ d l h Leonar N. 0 s an, ProJect Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation ACRS
- CGrimes RJones LNicholson, RGN-I GHill (4)
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555--0001 Mr. Leon R. Eliason Chief Nuclear Officer & President-Nuclear Business Unit Public Service Electric and Gas Company Post Office Box 236 Hancocks Bridge, NJ 08038 November 1, 1996
SUBJECT:
CHANGES TO TECHNICAL SPECIFICATION BASES, "PRESSURE/TEMPERATURE
- LIMITS, 11 SALEM NUCLEAR GENERATING STATION, UNITS 1 AND 2 (TAC NOS. M95531 AND M95532)
Dear Mr. Eliason:
By letter dated May 31, 1996, you submitted proposed changes to the Technical Specification (TS) Bases for Salem Nuclear Generating Station, Units l and 2.
The proposed changes are in Section 3/4.4.9 for Unit 1 and Section 3/4.4.10 for Unit 2, "Pressure/Temperature Limits."
The changes were made to reflect the design basis transients for the pressurizer overpressure protection system (POPS) by addressing the start of an intermediate head or high head Safety Injection pump with the reactor coolant system solid. Revision 15 to the Salem Updated Final Safety Analysis Report, dated June 12, 1996, has been revised to include thi~ information.
By letter dated February 13, 1995, we approved the use of the American Society of Mechanical Engineers Code Case N-514 for Salem which allows an additional ten percent margin in the Pressure/Temperature (P/T) limits contained in the TS.
Your analyses have demonstrated that the P/T limits in the TS, with the extra ten percent allowed by Code Case N-514, are not exceeded during the transients described in the proposed changes to the Bases. Therefore, the staff finds the proposed changes to the Bases acceptable.
Enclosed is a copy of the revised Bases Page B 3/4 4-11 for Unit 1 and B 3/4 4-12 for Unit 2.
Docket Nos. 50-272/311
Enclosure:
As stated cc w/encl:
See next page Sincerely,
- -"'1 /.1. (/))t J v**ll-1~~\\v Leonard N. Olshan, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
r-*---
,Mr. L~on R. Eliason
- Public Service Electric & Gas Company cc:
Mark J. Wetterhahn, Esquire Winston & Strawn 1400 L Street NW Washington, DC 20005-3502 Richard Fryling, Jr., Esquire Law Department - Tower SE 80 Park Place Newark, NJ 07101 Mr. D. F. Garchow General Manager - Salem Operations Salem Generating Station P.O. Box 236 Hancocks Bridge, NJ 08038 Mr. Louis Storz Sr. Vice President - Nuclear Operations Nuclear Department P.O. Box 236 Hancocks Bridge, New Jersey 08038 Mr. Charles S. Marschall, Senior Resident Inspector Salem Generating Station U.S. Nuclear Regulatory Commission Drawer 0509 Hancocks Bridge, NJ 08038 Dr. Jill Lipoti, Asst. Director Radiation Protection Programs NJ Department of Environmental Protection and Energy CN 415 Trenton, NJ 08625-0415 Maryland Office of People's Counsel 6 St. Paul Street, 21st Floor Suite 2102 Baltimore, Maryland 21202 Ms. R. A. Kankus Joint Owner Affairs PECO Energy Company 965 Chesterbrook Blvd., 63C-5 Wayne, PA 19087 Mr. Elbert Simpson Salem Nuclea~enerating Station, Units I and 2 Richard Hartung Electric Service Evaluation Board of Regulatory Commissioners 2 Gateway Center, Tenth Floor Newark, NJ 07102 Regional Administrator, Region I U. S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Lower Alloways Creek Township c/o Mary 0. Henderson, Clerk Municipal Building, P.O. Box 157 Hancocks Bridge, NJ 08038 Mr. David R. Powell, Manager Licensing and Regulation Nuclear Business Unit P.O. Box 236 Hancocks Bridge, NJ 08038 Mr. David Wersan Assistant Consumer Advocate Office of Consumer Advocate 1425 Strawberry Square Harrisburg, PA 17120 P. M. Goetz MGR. Joint Generation Atlantic Energy 6801 Black Horse Pike Egg Harbor Twp., NJ 08234-4130 Carl D. Schaefer External Operations - Nuclear Delmarva Power & Light Company P.O. Box 231 Wilmington, DE 19899 Public Service Commission of Maryland Engineering Division Chief Engineer 6 St. Paul Centre Baltimore, MD 21202-6806 Senior Vice President - Nuclear Engineering Nuclear Department P.O. Box 236 Hancocks Bridge, New Jersey 08038
REACTOR COOLANT SYSTEM BASES Finally, the new 10CFRSO rule which addresses the metal temperature of the closure head flange regions is considered.
This 10CFRSO rule states that the metal temperature of the closure flange regions must exceed the material RTNDT by at least 120°F for normal operation when the pressure exceeds 20 percent of the preservice hydrostatic test pressure (621 psig for Salem).
Table B3/4 4-1 indicates that the limiting RTNDT of 28°F occurs in the closure head flange of Salem Unit 1, and the minimum allowable temperature of this region is 148°F at pressures greater than 621 psig.
These limits do not affect Figures 3.4-2 and 3.4-3.
Although the pressurizer operates in temperature ranges above those for which there is reason for concern of non-ductile failure, operating limits are provided to assure compatibility of operation with the fatigue analysis performed in accordance with the ASME Code requirements.
The OPERABILITY of two POPS or an RCS vent opening of greater than 3.14 square inches ensures that the RCS will be protected from pressure transients which could exceed the limits of Appendix G to 10 CFR Part SO when one or more of the RCS cold legs are less than or equal to 312°F.
Either POPS has adequate relieving capability to protect the RCS from overpressurization when the transient is limited to either (1) the start of an idle RCP with the secondary water temperature of the steam generator less than or equal to 50°F above the RCS cold leg temperatures, or (2) the start of an intermediate head safety injection pump and its injection into a water solid RCS, or the start of a high head' safety injection pump in conjunction with a running positive displacement pump and injection into a water solid RCS.
SALEM -
UNIT 1 B 3/4 4-11 Revised by letter dated November 1,.1996
REACTOR COOLANT SYSTEM BASES Finally, the new 10CFRSO rule which addresses the metal temperature of the closure head flange regions is considered.
This 10CFRSO rule states that the metal temperature of the closure flange regions must exceed the material RTNDT by at least 120°F for normal operation when the pressure exceeds 20 percent of the preservice hydrostatic test pressure (621 psig for Salem).
Table B3/4 4-1 indicates that the limiting RTNDT of 28°F occurs in the closure head flange of Salem Unit 2, and the minimum allowable temperature of this region is 148°F at pressures greater than 621 psig.
These limits do not affect Figures 3.4-2 and 3.4-3.
Although the pressurizer operates in temperature ranges above those for which there is reason for concern of non-ductile failure, operating limits are provided to assure compatibility of operation with the fatigue analysis performed in accordance with the ASME Code requirements.
The OPERABILITY of two POPS or an RCS vent opening of greater than 3.14 square inches ensures that the RCS will be protected from pressure transients which could exceed the limits of Appendix G to 10 CFR Part 50 when one or more of the RCS cold legs are less than or equal to 312°F.
Either POPS has adequate relieving capability to protect the RCS from overpressurization when the transient is limited to either (1) the start of an idle RCP with the secondary water temperature of the steam generator less than or equal to S0°F above the RCS cold leg temperatures, or, (2) the start of an intermediate head safety injection pump and its injection into a water solid RCS, or the start of a high head safety injection pump in conjunction with a running positive displacement pump and injection into a water solid RCS.
SALEM - UNIT 2 B 3/4 4-12 Revised by letter dated November 1, 1996