ML20203N721
| ML20203N721 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Perry |
| Issue date: | 10/10/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20203N719 | List: |
| References | |
| GL-83-28, NUDOCS 8610170252 | |
| Download: ML20203N721 (3) | |
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SAFETY EVALUATION REPORT GENERIC LETTER 83-28, ITEM 2.1 (PART 1)
EQUIPMENT CLASSIFICATION (RTS COMPONENTS 1 PERRY NUCLEAR PLANT, UNITS 1,2 DOCKET NOS. 50-440/441 I
I INTRODUCTION AND
SUMMARY
l On February 25, 1983, both of the scram circuit breakers at Unit 1 of the Salem Nuclear Power Plant failed to open upon an automatic reactor trip signal from the reactor protection system. The incident was terminated manually by the operator about 30 seconds after the initiation of the automatic trip signal.
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The failure of the circuit breakers was determined to be related to the sticking of the undervoltage trip attachment. Prior to this incident, on February 22, -
1983, at Unit 1 of the Salem Nuclear Power Plant, an automatic trip' signal was generated based on steam generator low-low level during plant start-up.
In this case, the reactor was tripped manually by the operator almost coin-cidentally with the automatic trip.
i Following these incidents, on February 28, 1983, the NRC Executive Director for Operations (EDO), directed the staff to investigate and report on the generic implications of these occurrences at Unit 1 of the Salem Nuclear Power Plant.
The results of the staff's inquiry into the generic implications of the Salem unit incidents are reported in NUREG-1000, " Generic Implications of the ATWS Events at the Salem Nuclear Power Plant." As a result of this investigation, the Comission (NRC) requested (by Generic Letter 83-28 dated July 8,1983I) all licensees of operating reactors, applicants for an operating license, and holders of construction permits to respond to generic issues raised by the analyses of these two ATWS events.
8610170252 861010 FDR ADOCK 05000440
This report is an evaluation of the response submitted by Cleveland Electric Illuminating Company, the licensee for the Perry Nuclear Plant, Units 1,2 for Item 2.1 (Part 1) of Generic Letter 83-28.
The actual document's reviewed as part. of this evaluation are listed in the references at t,he end of the report.
Item 2.1 (Part 1) requires the licensee to confirm that all Reactor Trip h
System components are identified, classified and treated as safety-related as indicated in the following statement:
Licensees and applicants shall confinn that all components whose functioning is required to trip the reactor are identified as safety-related_on documents, procedures, and information handling systems used in the plant to control safety-related activities, in-cluding maintenance, work orders, and parts replacement.
EVALUATION The licensee for The Perry Nuclear Plant, Units 1,2 responded to the requirements 2
3 of Item 2.1 (Part 1) with submittals dated April 6,1984, and August 28, 1985,
The licensee stated in the first submittal tha't the "Q"-list for the plants was being revised to verify the correct classification of safety-related components.
The "Q"-list is to be used to determine proper classification for maintainance, work orders, and procurement activities. The second submittal reported that the "Q" list evaluation had been completed and that all components that are required to perform the reactor trip function were reviewed to verify that these components are classified as safety-related equipment.
CONCLUSION Based on our review of these responses, we find the licensee's statements confirm that a program exists for identifying, classifying and treating
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components that are required for performance of the reactor trip function as safety related. This program meets the requirements of Item 2.1 (Part 1) of the Generic Letter 83-28, and is therefore acceptable.
h REFERENCES 1.
NRC Letter, D. G. Eisenhut to all Licensees of Operating Reactors, Applicants for Operating License, and Holders of Construction Permits,
" Required Actions Based on Generic Implications of Salem ATWS Events (Generic Letter 83-28)," July 8,1983.
2.
Letter, M. R. Edelman, Cleveland Electric Illuminating Co... to D. G. Eisenhut, NRC, April 6, 1984.
3.
Letter, M. R. Edelman, Cleveland Electric Illuminating Co., to B. J. Youngblood, NRC, August 28, 1985.
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