ML19210B065
| ML19210B065 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/08/1978 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Herbein T METROPOLITAN EDISON CO. |
| Shared Package | |
| ML19210B066 | List: |
| References | |
| NUDOCS 7911020479 | |
| Download: ML19210B065 (3) | |
Text
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l DESIRIBUTION:
March 8, 1978 JDocke_t-flRC PDR L PDR co
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( !My >f ORB #4 Reading Occhet No. 50-2S9 C
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"etropolitan Edison Ccapany LShao file ATTi;:
Mr. J. G. Herbein RIngram Vice President OELD P. O. Box 542 OI&E(3)
Reading, Pennsylvania 19603 DEisenhut TAbernathy Gentlemen:
JBuchanan By letter dated December 2, 1977, we authorized certain modifications to the interin surveillance program enployed at Three Mile Island, tinit
.io.1 to assure the continued integrity of the shaf ts of the dec3y heat removal pumps.
One of the provisions of this modified procran was that vibration measurements and the ultrasonic inspection of the shaft would be performed at the conclusion of a run when the accumulated operating time of the pump since the last inspection in any mode (flow rate > 550 gpm) exceeded one hour. This limit was based on the suggested linit contained in your letter of October 27, 1977 and the fact that the pump manufacturer does not recorrend flows of less than 550 gpm for continuous operaticn.
In your letter of February 10, 1978, you note several problems associated with the present one hour criterion for flow rates > 550 gon, that have been discovered in the course of performing these tests.
One problem arises from the need for extended pump operation to determine bearing temperatures during inservice testing.
Another problem relates to the need to perform inservice testing on a monthly schedule while the vibration measurements and ultrasonic ir,sriection are only required quarterly.
In order to reduce the number of times that the pump must be run solely to obtain vibration measurements and perform ultrasonic inspection, you have requested that the accu :u-lated running time criteria for flow rates > 550 gpa be increased
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frcm one hour to three hours.
We have reviewed your request, and on the basis of the fact that the pump manufacturer has recomended against continuous operation at ficw rates less than 550 gpn, but has no such reservations against cperation at flow rates > 550 cm, we ccnclude that the reouested change is acceptable.
Iiideed,'our previous limits allowed operation in excess of three hours provided it was part of a continuous run.
156 204 puod
, Accordingly, this is to advise you that the schedule for performing vibration reasurenents and ultrasonic testing of the decay heat renoval pumps, as set forth in our letter of December 7,1977, may be modified so that such tests and inspections need be made only when the accumulated operating time at flow rates > 550 com since the preceding test and inspection exceeds three hours.
The test schedule applicable to operation with flow rates less than 550 gpa, however, remains unchanged.
Sincercly, Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors cc:
See next page 1564 205 s,w,
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G. F. Trowbridge, Escuire Shaw, Pi tt. man, Potts & Trowbridge 1800 M Street, fl.W.
Washington, D.C.
20036 GPU Service Corporation Richard W. Heward, Project !!anager
!4r. T. Gary Broughton, Safety and Licens_ing !1anager 250 Cherry Hill Road 5
Parsippany, t,'ew Jersey 07054 Pennsylvania Electric Company Mr. R. W. Conrad Vice President, Generation 1001 Broad Street Johnstown, Penn:ylvania 15307 Mi r.s i'ary '/. Southerd, Cl ; Mcn Citizens for a Safe Environment P. O. Box 405 Harrisburg, Pennsylvania 17100 D
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^h Governnent Publications Section State Library of Pennsylvania Box 1601 (Education Building)
Harrisburg, Pennsylvania 17126 1564 206 T
e DISTRIBUTION:
April 27, 1978 Docket NRC PDR L PDR ORBd4 Reading Cocket !!o. 50-239 VStello BGrimes OPA, CMiles RIngram Dross GZwetzig WCMiller, LFMB Metropolitan Edison Concany (5) h ATT?l:
i'r. R. C. Arnold BJones-4 Gray file Vice President - Generation BScharf-15 4 Extra P. O. Rox 542 JticGough Reading, Per.nsylvania 19603 BHarless DEisenhut Gentleren:
ACRS-16 The Comission has issued the enclosed M.endment f!c. 39 to Facility Operating License !!o. DPR-50 for the Three "ile Island Muclear Station, Unit Mo. 1 (TMI-1).
The acendment consists of changes to the Technical Specifications in response to your application dated January 9, 1970, as supplenented. This anendrent revises the Technical Specifications to reflect plant operating linitations for the first 130 effective full power days of operation in Cycle 4 In accordance with your letter dated April 27, 1978, the Comission has also issued the enclosed Exemption from the requirements of 10 CFR 50.t4(a)(1) that Energency Core Cooling System (ECCS) performance be calculated in accordance with an acceptable calculational model which confoms to the provisions in Appendix K to 10 CFR 50.
This exemption adds certain license conditions.
teong these conditions is the requirencnt that the reactor power not exceed 2311 P.fi (approxi-mately 91" of full power).
Copies of the Safety Evaluation and the Notice of Issuance related to the amendrent are also enclosed.
A cocy of the Exer.ption is also being filed with the Office of the Federal Register for publication.
Sincerely, 1564 207 Robert 'l.
Reid, Chief g, g3 g ;g,pc g g 9p 6 ig3 Operating Reactors Branch M Division of Operating Reactors f
4/4 773 Enclosures and cc:
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Enclosures:
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Mendment flo. 39 2.
Exemption 3.
Safety Evaluation 4.
flotice cc w/ enclosures:
See next page 1564 208 e
tietropolitan Edison Co.apany cc w/ enclosure (s):
G. F. Trowbridge, Esquire Dauphin County Office Emergency Shaw, Pittman, Potts & Trowbridge Preparedness 1800 !! Street, H.W.
Court House, Room 7 Washington, D. C.
20036 Front & t'arket Streets Harrisburg, Pennsylvania 17101 GPU Service Corporation Richard W. Heward, Project fianager Mr. T. Gary Broughton, Safety and Department of Environmental Resources ATIN:
Director, Of fice of Radiological Licensing lianager He al th 260 Cherry Hill Road Parsippany, New Jersey 07054 P. O. Box 2063 Harrisburg, Pennsylvania 17105 Pennsylvania Electric Company fir. R. W. Conrad Chief, Energy Systems Analyses Vice President, Generation Branch (AW-459)
Of fice of Radiation Procrams 1001 Broad Street Johnstown, Pennsylvani a 15907 U. S. Environmental Protection Agency Room 645, East Toter Mi ss !!ary V. Southard, Chairnan 401 fl Street, S.W.
Citizens for a Safe Environment Washington, D. C.
20460 P. O. Box 405 Harrisburg, Pennsylvania 17108 cc w/ enclosure (s) & incoming dtd:
1/9/78 and 4/27/78 Government Publications Sectien Governor's Of fice of State Planning State of Library of Pr>nnsylvania and Development Box 1601 (Education Euildinc)
ATT!!-
Coordinator, Pennsylvania Harrisburg, Pennsylvania 17126 State Clearinnhouse P. O. Box 1323 Dr. Edward O. Swartz Harrisburg, Pennsylvania 17120 Board of Su;'ervisors Londonderry Township PFDel - Geyers Church Road Itiddletown, Pennsylvania 17057 m2rf,0s,>.0 U. S. Environnentil Protection Agency D
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Reaion III Of fice ATT!!:
EIS CCORDI%TN Curtis Building (S,xtn F1ocr) 6th and Walnut Streets Phil adel;1hia, Pennsylvania 19106 1564 209