ML20216D986
| ML20216D986 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/12/1999 |
| From: | Colburn T NRC (Affiliation Not Assigned) |
| To: | Langenbach J GENERAL PUBLIC UTILITIES CORP. |
| References | |
| TAC-MA3950, NUDOCS 9907300219 | |
| Download: ML20216D986 (4) | |
Text
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Mr. Jim:s W. Leng:nbich, Vic3 Pr:sid:nt July 12, 1999
'y end Director - TMI
. GPU Nuclur, Inc.
P. O. Box 480 Middletown, PA 17057
SUBJECT:
TECHNICAL SPECIFICATION CHANGE REQUEST (TSCR) 248 - REMOTE SHUTDOWN SYSTEM - REQUEST FOR ADDITIONAL INFORMATION FOR THREE MILE ISLAND NUCLEAR STATION, UNIT 1 (TMI-1)
Dear Mr. Langenbach:
The NRC staff has reviewed your application dated October 19,1998, which requested review and approval of operability and surveillance *squirements for the TMI-1 remote shutdown system. The staff has determined it will nee:: the additional information identified in the enclosure in order to complete its review. In: order for the staff remain on schedule with its review of your request, please provide the requested information within 30 days of receipt of this letter. The information in the enclosure and this request and the scheduled response date have been previously discussed with and agreed to by Mr. D. Distel of GPU Nuclear, Inc., and a
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copy of this letter is being faxed to Mr. Distel.
If you have any questions, please contact me at (301) 415-1402.
1 Sincerely, original signed by:
Timothy G. Colburn, Sr. Project Manager, Section 1 Project Directorate l Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-289
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Enclosure:
Request for Additional Information cc w/ encl: See next page DISTRIBUTION:
Docket File MO'Brien SBlack TColburn SWest PUBLIC OGC PEselgroth, RI PDI R/F PMadden ACRS SBajwa 9907300219 990712 PDR ADOCK 05000289
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DOCUMENT NAME: G:\\PDI-1\\TMI-1\\RA13950.WPD To receive a copy of this document, indicate in the box: "C" = Copy without attachment / enclosure "E" = Copy with attachrgent/ enclosure "N" = No copy 0FFICE PM:PD1
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\\.....,o8 July 12, 1999 Mr. James W. Langenbach, Vice President and Director - TMI GPU Nuclear, Inc.
P. O. Box 480 Middletown, PA 17057
SUBJECT:
TECHNICAL SPECIFICATION CHANGE REQUEST (TSCR) 248 - REMOTE SHUTDOWN SYSTEM - REQUEST FOR ADDITIONAL INFORMATION FOR THREE MILE ISLAND NUCLEAR STATION, UNIT 1 (TM -1)
Dear Mr. Langenbach:
The NRC staff has reviewed your application dated October 19,1998, which requested review and approval of operability and surveillance requirements for the TMI-1 remote shutdown system. The staff has determined it will need the additional information identified in the enc'osure in order to complete its review. In order for the staff remain on schedule with its review of your request, please provide the requested information within 30 days of receipt of this letter. The information in the enclosure and this request and the scheduled response date have been previously discussed with and agreed to by Mr. D. Distel of GPU Nuclear, Inc., and a copy of this letter is being faxed to Mr. Distel.
If you have any questions, please contact me at (301) 415-1402.
Sincerely, f
k
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Timothy G. Colburn, Sr. Project Manager, Section 1 Project Directorate i Division of Licensing Prcject Management Office of Nuclear Reactor Regulation Docket No. 50-289 Enclosure. Request for Additional Information cc w/ encl: See next page
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c Three Mile Island Nuclear Station, Unit No.1 cc:
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Michael Ross Robert B. Borsum 4
Director, O&M, TMI B&W Nuclear Technologies l
GPU Nuclear, Inc.
Suite 525 P.O. Box 480 1700 Rockville Pike Middletown, PA 17057 Rockville, MD 20852 John C. Fomicola David J. Allard, Director Director, Planning and Bureau of Radiation Protection Regulatory Affairs Pennsylvania Department of GPU Nuclear, Inc.
Environmental Resources 100 Interpace Parkway P.O. Box 2063 Parsippany, NJ 07054 Harrisburg, PA 17120 Edwin C. Fuhrer Dr. Judith Johnsrud Manager, TMI Regulatory Affm.,s National Energy Committee GPU Nuclear, Inc.
P.O. Box 480 433 Orlando Avenue Middletown, PA 17057 State College, PA 16803 Emest L. Blake, Jr., Esquire Peter W. Eselgroth, Region l i
l Shaw, Pittman, Potts & Trowbridge U.S. Nuclear Regulatory Commission 2300 N Street, NW.
475 Allendale Road Washington, DC 20037 King of Prussia, PA 19406 i
Chairman l
Board of County Commissioners of Dauphin County Dauphin County Courthouse Harrisburn, PA 17120 Chairman Board of Supervisors of LondonderryTownship R.D. #1, Geyers Church Road Middletown, PA 17057 Wayne L. Schmidt Senior Resident inspector (TMI-1)
U.S. Nuclear Regulatory Commission P.O. Box 219 Middletown, PA 17057 Regional Administrator Region i U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 l
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Reauest for AdditionalInformation Technical Specification Charrie Reaue:st (TSCR) 248 Remote Shutdown Systerq
- 1. A review of the TMI-1 definition for hot standby shows that it is different than that of the
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Standard Technical Specification (STS). In the case of the STS, HOT STANDBY refers to a condition where the reactor is suberitical, in the case of the TMI-1 TS, HOT STANDBY is defir.ed as the reactor being critical. The applicability statement needs to use the corresponding TMI 1 definition that is equivalent to the standard or provide sufficient justNication for an attemate definition. None of the TMI-1 definitions is equivalent to the B&W STS HOT STANDBY, where the reactor is suberitical and Tavg is greater than or equal to 330 degrees F. The closest is TMI-1's definition of HOT SHUTDOWN, where the reactor is suberitical but temperature is greater than or equal to 525 degrees F. TMI-1 TSs have no defined term for when the reactor is suberitical but the temperature is between 200 and 525 degrees F.
- 2. The proposed TS Table 3.5-4 only contains source range flux However this only covers six decades of counts and its limit is 2-3 decades below the power range. Your application states that the operators are supposed to scram the plant prior to leaving the control room, however, it would take some finite amount of time after the scram for the power to reduce to the top limit of the source range monitoring. Justify not having Intermediate Range and/or Power Range '
detectors in the remote shutdown system, i.e., the STS contains a log power neutron flux in addition to the source range flux instrument.
- 3. Not all functions listed in Table 7.41 of the FSAR are listed in Table 3.5-4 of the proposed TS. How was it decided which functions to include or exclude since all appear to be part of the remote shutdown system. Note, the Table 3.3.18-1 of the STS is for illustration purposes and not intended to be allinclusive.
The above questions are necessary to ensure con'sistency with the STS for B&W plants as described in NUREG-1430 or in the alternative to adeauately justify any differences.
Enclosure