ML17157A197
| ML17157A197 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 05/30/1990 |
| From: | Thadani M Office of Nuclear Reactor Regulation |
| To: | Keiser H PENNSYLVANIA POWER & LIGHT CO. |
| References | |
| TAC-76810, NUDOCS 9006130256 | |
| Download: ML17157A197 (5) | |
Text
May 30, 199 Docket'llo. 50-388 t/Ir. Harold W. Keiser Senior Vice President-Nuclear Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101
Dear Hr. Keiser:
DISTRIBUTION
~~5~8=888 NRC PDR Local PDR PDI-2 Reading SVarga BBoger WButler NO'Brien NThadani JStone OGC EJordan ACRS (10)
PSwetland RBlough
SUBJECT:
INTEGRATED LEAK RATE TEST FOR SUS(UEHANNA STEAN ELECTRIC STATION (SSES),
UNIT 2 (TAC NO. 76810)
In your letter dated February 7, 1990, you requested our comments on your understanding that the leakage from main steam isolation valves (YiSIVs) be separated from the results of the integrated leak rate test (ILRT) for the purpose of compliance with the testing requirements of 10 CFR 50, Appendix J.
You stated that, during a recent ILRT, the initial data indicated a high leakage rate which appeared to render the ILRT leakage rate unacceptable.
You found that the "B" NSIV was the source of excessive leakage.
When the "B" t/ISIV was stroked, the leakage rate was significantly reduced and met the requirements of 10 CFR 50, Appendix J.
You stated that since leakage from the MSIVs is accounted for separately (from containment leakage) for the purpose of calculating the consequences of design basis accidents (DBAs), it should not be included in the ILRT.
Furthermore, you were granted an exemption from the requirements of 10 CFR 50, Appendix J which permitted you to exclude the MSIVs from the ILRT for the purpose ot complying with 10 CFR 50, Appendix J.
Our review of the licensing bases for the Susquehanna Steam Electric Station (SSES)
Unit 2 as documented in the staff's safety evaluation report (SER),
indicates that separation of the HSIV leakage from the ILRT leakage was acceptable and an exemption from this requirement of 10 CFR 50, Appendix J was granted.
Your Technical Specification Section 3.6.1.2 indicates that h)SIVs are exempt from inclusion in the ILRT requirements to comply with 10 CFR 50, Appendix J.
Based on the above, we concur with your conclusion that your ILRT successfully complied with 10 CFR 50, Appendix J.
Sincerely, cc:
See next page
/s/
Mohan C. Thadani, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation P
-2/
NThadani:mj p /gd/90 PDI-2/D Butler
+/a/90 9006130256 900530 PDR ADOCK 05000388 PDC OF t
l~ g
~
~
II
t~ p,g'Rangy 0
~
~i 00 Yp40 qO
++*++
Docket No. 50-388 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 May 30, 1990 MIr. Harold W. Keiser Senior Vice President-Nuclear Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101
Dear Mr. Keiser:
SUBJECT:
INTEGRATED LEAK RATE TEST FOR SUSQUEHANNA STEAM ELECTRIC STATION (SSES),
UINIT 2 (TAC NO. 76810)
In your letter dated February 7. 1990, you requested our comments on your understanding that the leakage from main steam isolation valves (MSIVs) be separated from the results of the integrated leak rate test (ILRT) for the purpose of compliance with the testing requirements of 10 CFR 50, Appendix J.
You stated that, during a recent ILRT, the initial data indicated a high leakage rate which appeared to render the ILRT leakage rate unacceptable.
You found that the "B" MSIV was the source of excessive leakage.
When the "B" MSIV was stroked, the leakage rate was significantly reduced and met the requirements of 10 CFR 50, Appendix J.
You stated that since leakage from the MSIVs is accounted for separately (from containment leakage) for the purpose of calculating the consequences of design basis accidents (DBAs), it should not be included in the ILRT.
Furthermore, you were granted an exemption from the requirements of 10 CFR 50, Appendix J which permitted you to exclude the MSIVs from the ILRT for the purpose of complying with 10 CFR 50, Appendix J.
Our review of the licensing bases for the Susquehanna Steam Electric Station (SSES) Unit 2 as documented in the staff's safety evaluation report (SER),
indicates that separation of the MSIV leakage from the ILRT leakage was acceptable and an exemption from this requirement of 10 CFR 50, Appendix J was granted.
Your Technical Specification Section 3.6.1.2 indicates that MSIVs are exempt from inclusion in the ILRT requirements to comply with 10 CFR 50, Appendix J.
Based on the above, we concur with your conclusion that your ILRT successfully complied with 10 CFR 50, Appendix J.
S incere ly, cc:
See next page Mohan C. Thadani, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
hj to
-Mr. Harold M. Keiser Pennsylvania Power 5 Light Company Susquehanna Steam Electric Station Units 1 5 2
CC:
Jay Silberg, Esq.
Shaw, Pittman, Potts
& Trowbridge 2300 N Street N.H.
llashington, D.C.
20037 Bryan A. Snapp, Esq.
Assistant Corporate Counsel Pennsylvania Power 5 Light Company 2 North Ninth Street Al1entown, Pennsylvania 18101 Mr. J.
M. Kenny Licensing Group Supervisor Pennsylvania Power 5 Light Company 2 North Ninth Street Allentown, Pennsy1vani a 18101 Mr. Scott Barber Senior Resident Inspector U. S. Nuclear Regulatory Commission P.O.
Box 35 Berwi ck, Pennsylvania 18603-0035 Mr. Thomas M. Gerusky, Director Bureau of Radiation Protection Resources Commonwealth of Pennsylvania P. 0.
Box 2063 Harrisburg, Pennsylvania 17120 Mr. Jesse C. Tilton, III Allegheny Elec. Cooperative, Inc.
212 Locust Street P.O.
Box 1266 Harr isburg, Pennsylvania 17108-1266 Mr. S.
B. Ungerer Joint Generation Projects Department Atlantic Electric P.O.
Box 1500 1199 Black Horse Pike P leasantville, New Jersey 08232 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Mr. Harold G. Stanley Superintendent of Plant Susquehanna Steam Electric Station Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsy1vani a 18101 Mr. Herbert D. Moodeshick Special Office of the President Pennsylvania Power and Light Company 1009 Fowles Avenue Berwi ck, Pennsylvania 18603 Mr. Robert G. Byram Yice President-Nuclear Operations Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101
C "4 ~