ML20234B739
| ML20234B739 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/30/1987 |
| From: | Edison G Office of Nuclear Reactor Regulation |
| To: | Hukill H GENERAL PUBLIC UTILITIES CORP. |
| References | |
| TAC-64822, NUDOCS 8707060183 | |
| Download: ML20234B739 (4) | |
Text
June 30, 1987 Docket No. 50-289 DISTRIBUTION Docket Filez G. Edison NRC & Local PDRs OGC-Bethesda i
Mr. Henry D. Hukill, Vice President PDI-4 Reading E. Jordan and Director - TMI-1 S. Varga J. Partlow GPU Nuclear Corporation B. Boger ACRS (10)
P.O. Box 480 S. Norris
[ Gray File]
Middletown, Pennsylvania 17057 H. Balukjian
Dear Mr. Hukill:
SUBJECT:
TMI-1 REACTOR TRIP SETPOINT, TSCR NO. 154 (TAC NO. 64822)
The staff has reviewed your submittal dated March 5,1987 concerning your reactor trip setpoint and found that additional infomation is necessary.
Enclosed is the staff request for additional information.
You are requested to respond to this request for additional infomation by July 24, 1987 so that the staff can complete its review at an early date. The enclosed questions were discussed with S. Kowkabany of your staff on June 19, 1987.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
Sincerely,
/s/
Gordon E. Edison, Senior Project Manager Project Directorate I-4 Division of Reactor Projects I/II
Enclosure:
As stated cc w/ enclosure:
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Mr. Henry D. Hukill Three Mile Island Nuclear Station, GPU Nuclear Corporation Unit No. I cc:
Mr. R. J. Toole Mr. Richard Conte O&M Director, TMI-1 Senior Resident Inspector (TMI-1)
GPU Nuclear Corporation U.S.N.R.C.
Middletown, Pennsylvania 17057 P.O. Box 311 Middletown, Pennsylvania 17057 Richard J. McGoey Manager, PWR Licensing Regional Administrator, Region I GPU Nuclear Corporation U.S. Nuclear Regulatory Commission 100 Interpace Parkway 631 Park Avenue Parsippany, New Jersey 70754 King of Prussia, Pennsylvania 19406 Mr. C. W. Smyth Mr. Robert B. Borsum TMI-1 Licensing Manager Babcock & Wilcox GPU Nuclear Corporation Nuclear Power Generation Division P. O. Box 480 Suite 220, 7910 Woodmont Avenue Middletown, Pennsylvania 17057 Bethesda, Maryland 20814 i
Ernest L. Blake, Jr., Esq.
Governor's Office of State Planning Shaw, Pittman, Potts & Trowbridge and Development 2300 N Street, N.W.
ATTN: Coordinator, Pennsylvania Washington, D.C.
20037 State Clearinghouse P. O. Box 1323 Sheldon J. Wolfe, Esq., Chairman Harrisburg, Pennsylvania 17120 Atomic Safety and Licensing Board U.S. Nuclear Regulatory Commission Mr. Larry Hochendoner Washington, D.C.
20555 Dauphin County Commissioner Dauphin County Courthouse Mr. Frederick J. Shon Front and Market Streets Atomic Safety and Licensing Board Harrisburg, Pennsylvania 17101 U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Mr. David D. Maxwell, Chairman Board of Supervisors Dr. Oscar H. Paris Londonderry Township Atomic Safety and Licensing Board RFD#1 - Geyers Church Road U.S. Nuclear Regulatory Commission Middletown, Pennsylvania 17057 Washington, D.C.
20555 Mr. Thomas M. Gerusky, Director l
Atomic Safety & Licensing Board Panel Bureau of Radiation Protection U.S. Nuclear Regulatory Commission Pennsylvania Department of Washington, DC 20555 Environmental Resources P. O. Box 2063 Atomic Safety & Licensing Appeal Harrisburg, Pennsylvania 17120 Board Panel (8)
U.S. Nuclear Regulatory Commission Thomas Y. Au, Esq.
Washington, D.C.
20555 Office of Chief Counsel 4
Department of Environmental Resources l
Docketing and Service Section 505 Executive House j
Office of the Secretary P. O. Box 2357 j
U.S. Nuclear Regulatory Commission Harrisburg, Pennsylvania 17120 4
Washington, D.C.
20555 Ms. Louise Bradford TMIA i
1011 Green Street i
Harrisburg, Pennsylvania 17102
Mr. Henry D. Hukill Three Mile Island Nuclear Station GPU Nuclear Corporation Unit 1 TMkA I
315 Peffer Street Harrisburg, Pennsylvania 17102 Bruce W. Churchill, Esq.
Shaw, Pittman, Potts & Trowbridge 2300 N Street, N.W.
Washington, D.C.
20037 l
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4 ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION CONCERNING THREE MILE ISLAND NUCLEAR STATION UNIT 1 (TMI-1)
TECHNICAL SPECIFICATION CHANGE REQUEST N0. 154 1.
Considering the turbine bypass capabilities and other plant specific features for the TMI Unit 1, will raising the reactor trip on high pressure to 2355 psig and raising the arming threshold for the ART on turbine trip to 45% result in more frequent lifting of the first bank or additional banks of the main steam safety valves (MSSVs)? Also, will the proposed Technical Specification changes result in more frequent lifting of MSSVs than for the original plant design (i.e., 2390 psig high pressure trip, 2255 psig PORV set point and no anticipatory reactor trip l
on turbine trip)? Provide the Sases for your response.
2.
If the proposed changes will result in more frequent lifting of the MSSVs than for the current conditions or the original design, then state why the proposed changes are acceptable.
I 3.
Confirm that no credit was taken for the anticipatory reactor trip on turbine trip in the accident analyses of Chapter 15 of the Final Safety Analysis Report to provide assurance that the increase in the arming l
threshold for the ART on turbine trip to 45% reactor power is bounded by these analyses.
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