ML20072H016
| ML20072H016 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/18/1983 |
| From: | Hukill H GENERAL PUBLIC UTILITIES CORP. |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| REF-SSINS-6820 5211-83-078, 5211-83-78, IEB-79-09, IEB-79-9, IEB-83-01, IEB-83-1, NUDOCS 8303290242 | |
| Download: ML20072H016 (2) | |
Text
{{#Wiki_filter:> GPU Nuclear Corporation U Nuclear SnzeB 480 s Middletown. Pennsylvania 17057 717 944-7621 TELEX 84-2386 Writer's Direct Dial Number: March 18, 1983 5211-83-078 Mr. R. C. Haynes Pegion I, Regional Administrator U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406
Dear Sir:
Three Mile Island Nuclear Station, Unit 1 (TMI-1) Operating License No. DPR-50 Docket No. 50-289 IE Bulletin 83-01 This letter is in response to your letter of February 25, 1983, forwarding IE Bulletin 83-01 concerning failure of reactor trip breakers. This informa-tion is being resubmitted with required Oath of Affirmation which was omitted from our March 7, 1983 response. Sincerely, H. D. lukill Director, TMI-l HDH: RAS:vjf Enclosure cc: R. Conte Sworn and Subscribed to Before me this 18th day of March , 1983. h w %c Notary Publi DAkt e M 6 trio NoiASv unnut lAlbDtHon 80RO DAUPHIN COUND MY C0FWlS$10N FyPIRES illNI 17.198$ Sember i'ennsyhania Assnc atina ce Nmant.- (( 8303290242 830318 ration is a subsidiary of the General Public Utilities Corporation PDR ADOCK 05000289 O PDR
c ENCLOSURE' The TMI-l Reactor Trip Breakers are General Electric AK-2 circuit breakers. The requirements-of Bulletin 83-01 do not apply since Westinghouse DB breakers are not used as Reactor Trip Breakers. Note: Westinghouse DB breakers are used on Class IE . equipment-at IMI-1; however, they do not have undervoltage' devices. This concern, therefore, does not affect those breakers. The Reactor Trip Breakers at TMI-1 are tripped by an undervoltage device for which a similar concern was identified by Bulletin 79-09. The maintenance and testing described in our response are maintained current when the unit is operating. Additional information and discussion of Scram breaker failures will be-provided at'the-March 8, 1983, meeting with the NRC and B&W Regulatory Response Group. Specific information regarding use of Westinghouse DB breakers at TMI-l has been provided to the TMI-l Senior Resident Inspector, =}}