ML18093B396
| ML18093B396 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 01/06/1989 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML18093B395 | List: |
| References | |
| GL-83-28, NUDOCS 8901180124 | |
| Download: ML18093B396 (3) | |
Text
SAFETY EVALUATION REPORT GENERIC [ETTER 83-~8, ITEM ?.1 (PART 2)
VENDOR INTERFACE PROGRAMS f RTS COMPONENTS)
SALEM NUCLEAR GENERATING STATION, UNITS l,?
DOCKET NOS.
50-27~/311 INTROf.'lUCTION AND
SUMMARY
ENCLOSURE nn February ~5, 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.
This incident was terminated manually by the operator about 30 seconds after the initiation of the automatic trip signal, 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 ?2, 1Q83, at llnit 1 of the Salem Nuclear Power Plant, an automatic trip signal was generated based on s~eam 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.
Following these incidents, on February 28, 1983, the NRC Executive Oirector for Operations (EOO), 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 Commission (NRC) reauested (by Generic Letter 83-28 dated,July 8, 1QfB1) all licensees of operating reactors~ ~pplicants for an operating license, and holders of construction pennits to respond to generic issues raised by the analyses of these two events.
This report is an evaluation of the response submitted by Public Service Electric & Gas Company, the licensee for the Salem Nuclear Generating Station, Units 1,2, for Item ?.l (Part 2) of Generic Letter 83-~8. The actual documents reviewed as part of this evaluation are listed in the references at the end of this report.
Item 2.1 (Part?) requires the licensee to confirm that an interface has been established with the NSSS or with the vendors of each of the components of the Reactor Trip System which includes:
EVALUATION periodic communication between the licensee/applicant and the NSSS or the vendors of each of the components of the Reactor Trip System, and a system of positive feedback which confirms receipt by the licensee/applicant of transmittals of vendor technical informntion.
The licensee for the Salem Nuclear Generating Station, Units 1, ~ responded to the requirements of Item ~.1 (Part ?) with submittals dated March 8, 1983?. anrl March 14, 19833* The licensee stated in these submittals that Westinghouse is the NSSS for the Salem Nuclear heneratinq Station, Units 1, ? and that the RTS is included as part of the Westinghouse interface program established for this plant.
The response also confirms that this interface program includes both
.periodic communication between Westinghouse and the licensee and positive feedback from the licensee in the form of signed receipts for technical information transmitted by Westinghouse.
,.0 CONCLUSION Based on our review of~hese responses, we find the licensee's statements confirm that a vendor interface progr~m exists with the NSSS vendor for components that are required for perfonnance of the reactor trip function.
This prograM meets the requirements of Ttem ?,l (Part 2l of the Generic Letter 83-?.R, and is therefore acceptable.
REFERENCES
- 1.
NRC letter 9 D. G. Eisenhut to all Licensees of Operating Reactors, Applicants for Operating License, and Holders of Construct.ion Permits, "Required Actions Based on Generic Implications of Salem ATWS Events (Generic Letter 83-28),
11 July 89 1983.
- 2.
Public Service Electric and Gas letter to NRC, Richard A. llderitz to D. G. Eisenhut, Director, nivision of Licensing, "Reactor Trip Rreaker Failure," March 8~ 1983.
- 3.
Public Service Electric and Gas letter to NRC 9 Richard A. Uderitz to D. G. Eisenhut, Director, Division of Licensing, "Corrective Action Program Related to Reactor Trip Rreaker Failures," March 14, 1Q83.