ML20058P167
| ML20058P167 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 12/16/1993 |
| From: | Siegel B Office of Nuclear Reactor Regulation |
| To: | Dennis Morey SOUTHERN NUCLEAR OPERATING CO. |
| References | |
| TAC-M86291, TAC-M86292, NUDOCS 9312230119 | |
| Download: ML20058P167 (4) | |
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i NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 g
Docket Nos. 50-348 and 50-364 Mr. D. N. Morey, Vice President Southern Nuclear Operating Co., Inc.
Post Office Box 1295 Birmingham, Alabama 35201-1295
Dear Mr. Morey:
SUBJECT:
REQUEST FOR TECHNICAL SPECIFICATION BASES CHANGE - JOSEPH M. FARLEY NUCLEAR PLANT, UNITS 1 AND 2 (TAC NOS. M86291 and M862920)
By letter dated April 13, 1993, you requested a change to the Technical Specification (TS) Bases for the Joseph M. Farley Nuclear Plant, Units I and 2 (Farley). This change was requested to correct an inconsistency between the TS Bases 3/4.6.1.4 " Internal Pressure" and the accident analysis as documented in the Final Safety Analysis Report (FSAR) Section 6.2.
As identified in your submittal, the TS Bases currently state the maximum peak pressure following a loss-of-coolant accident (LOCA) event is 45 psig and the FSAR documents the peak post-LOCA accident pressure is 48 psig assuming zero initial containment pressure. The staff reviewed the methods you used to calculate the containment pressure response following a double-ended pipe rupture in Section 6.2.1 of its Safety Evaluation Report (SER) dated May 2, 1975. The staff's SER stated that the peak containment pressure you calculated was 48 psig, which is consistent with the value documented in your FSAR.
In addition, as stated in the SER, the staff performed independent -
containment pressure response calculations that validate the 48 psig pressure you calculated.
On'the bases of the above, the staff agrees that the 45 psig value of peak containment pressure in the TS B 3/4.6.1.4 is in error and your proposed change, which reads as follows, is acceptable.
EC RE CEMER CWY 3
200117 h
9312230119 931216 PDR ADOCK 05000348 P
PDR b
December 16, 1993 Mr. D. N. Morey '
"The maximum peak pressure expected to be obtained from a LOCA event is 4B psig.
Even with an initial positive pressure of 3 psig, the maximum containment pressure will remain below the design limit of 54 psig."
The two revised TS Bases pages for both of the Farley units are provided as.
Sincerely, 4
Original Signed by:
Byron L. Siegel, Senior Project Manager Project Directorate 1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation i
Enclosures:
Revised TS Bases pages cc w/ enclosures:
See next page DISTRIBt1 TION:
Docket File NRC & Local PDRs PDII-1 R/F S. Varga G. Lainas S. Bajwa P. Anderson B. Siegel OGC D. Hagan G. Hill (4)
C. Grimes ACRS (10)
OPA OC/LFDCB E. Merschoff, RII cc: Plant Service List
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NAME PAndIrson BSieg[(rsl RBk, ted SBajw [ N DATE 12/ A /93 12/ M /93 12//[ /93 12//bf OFFICIAL RECORD COPY DOCUMENT NAME: G:\\FARLEY\\FAR86291.LTR
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Mr. D. N. Morey ;
F "The maximum peak pressure expected to be obtained from a LOCA event is 48 psig. Even with.an initial positive pressure of 3 psig, the maximum
. containment pressure will remain below the design.1imit of 54 psig."
The two revised TS Bases pages for both of the Farley units are provided as.
Enclosure I.
Sincerely, M
yron L. Sie 1, Senior Project Manager-roject Dire torate 1 Division of Reactor Projects - 1/II.
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Office of Nuclear Reactor Regulation
Enclosure:
Revised TS Bases pages cc w/ enclosures:
See next page i
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i Mr. D. N. Morey' Joseph M. Farley Nuclear Plant Southern' Nuclear Operating l
Company, Inc.
l tj cc:
t Mr. R. D. Hill, ' Jr.
- State Health Officer General Manager - Farley Nuclear Plant Alabama Department of Public Health j
. Southern Nuclear Operating Co., Inc.
434 Monroe Street Post Office Box.470-
- Montgomery, Alabama 36130-1701 Ashford, Alabama 36312
.j Chairman i
Mr. B. L. Moore,-Licensing Manager Houston County Commission 1
Southern Nuclear Operating Co., Inc.
Post Office Box 6406 3
Post Office Box'1295 Dothan, Alabama' 36302
.i Birmingham, Alabama 35201-1295 Regional Administrator, Region II James H. Miller, III, Esquire U. S.' Nuclear Regulatory Commission i
Balch and Bingham Law Firm 101 Marietta St., N.W., Ste. 2900.
Post Office Box 306 Atlanta, Georgia-30323 1710 Sixth Avenue North i
Birmingham, Alabama 35201 Resident Inspector U.S. Nuclear Regulatory Commission Mr. J. D. Woodard Post Office Box 24 - Route 2 i
Executive Vice President Columbia, Alabama 36319 Southern Nuclear Operating Company i
P.O. Box 1295 1
Birmingham, Alabama 35201
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