ML19318B017
| ML19318B017 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 06/06/1980 |
| From: | Gilberts D NORTHERN STATES POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-80-12, NUDOCS 8006240558 | |
| Download: ML19318B017 (2) | |
Text
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NSD NORTHERN STATES POWER COMPANY M O N N E A PO LI s. M I N N E S OTA 55401 June 6, 1980 Mr. James G. Keppler Director, Region III Office of Inspection and Enforcement i
U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137
Dear Mr. Keppler:
Prairic Island Nuclear Generating Plant Docket Nos. 50-282 and 50-306 In response to IE Bulletin No. 80-12, changes to procedures are being initiated.
These changes will be incorporated by August 1, 1980.
j 1.
Administrative Procedure, Special Order #190, specifies the redundancy and diversity requirements of the decay heat removal (DilR) systems to meet the intent of the Bulletin.
2.
Operating procedures for draining the Reactor Coolant Systra (RCS), for refueling cavity filling and draining, and for RCS filling and venting will require both train A & B of the Residual IIeat Removal system (RIIR) to be operable.
3.
The operating procedure for reactor refueling (cavity flooded) will require one train of RIIR available with an accessible source of borated water to replenish any loss of inventory in the event of a loss of the available RllR train.
4.
Initial condfrians will be imposed upon electrical, mechanical and instru-mentation and control maintenance procedures to minimize the possibility of inadvertent removal of critical equipment from service.
Critical equip-ment is that required to assure redundant or diverse DilR capability during cold or refueling shutdown modes of reactor operation.
5.
Operating procedures will be changed to specify those actions required to restore a lost DilR train in a timely manner.
Redundancy and diversity are inherent in the design of our DlIR facilities. The procedural controls outlined above will provide a high degree of assurance that the design intent of the DilR systems will be met during all modes of plant opera-bility.
Yours truly, D. E. Gilberts, Vice Presijent Power Production ec:
Mr. G. Charnoff D
Division of Reactor Operations Inspection f
Office of Inspection & Enforcement, Washington D. C.
8006240 55B
o UNITED STATES NUCLEAR REGULATORY CO> MISSION NORTilERN STATES POWER COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PIJsNT Docket Nos. 50-282 and 50-306 LETTER DATED JUNE 6,1980 RESPONDING TO NRC REQUEST FOR INFORMATION IN IE BULLETIN 80-12 Northern States Power Company, a Minnesota corporation, by this letter dated June 6,1980, hereby submits information in response to NRC request for in-formation concerning IE Bulletin 80-12.
This request contains no ru tricted or other defense information.
NORTIIERN STATES POWER COMPANY By:
N D. E. Gilberts Vice President Power Producti;n On this 6th day of June,1980, before me a notary public in and for said County, personally appeared D. E. Gilberts, Vice President Power Production, and being first duly sworn acknowledged that he is authorized to execute this document on behalf of Northern States Power Company, that he knows the contents thereof and that to the best of his knowledge, information and belief, the statements made in it are true and that it is not interposed for delay.
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<F JEANNE M. HACKER o
NOTAAV PUBLIC - MINNESOT4 4'
HENNEPIN COUNTY q
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