ML20215D270

SER Accepting Rev 13 to Unit 1 & Rev 4 to Unit 2 Pump & Valve Inservice Testing,Per Generic Ltr 83-28,Item 2.1 (Part 2)

ML20215D270
Person / Time
Site:	Catawba
Issue date:	06/11/1987
From:	NRC
To:
Shared Package
ML20215D196	List: ML20215D194 ML20215D270
References
GL-83-28, NUDOCS 8706180464
Download: ML20215D270 (3)

Text

{, Enclosure 6 SAFETY EVALUATION REPORT GENERIC LETTER 83 78, ITEM ?.1 (PART 2)

VENDOR INTERFACE PROGRAMS (RTS COMPONENTS)

CATAWRA NUCLEAR STATION, UNITS 1,?

DOCKET NOS. 50-413/414 TNTRODllCTION AND

SUMMARY

l' On February P5, 1983, both of the scran 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 22, )

1083, at linit 1 of the Salem Nuclear Power Plant, an automatic trip signal was  !

generated based on steam generator low-low level durinc plant start-un. In this case, the reactor was tripped nanually by the operator almost coincidentally with the automatic trip.

4 Following these incidents, on Februarv ?8,1983, the NRC Executive Director for Operations (ED01, directed the staff to investigate and report on tho generic f

implications of these occurrences at linit 1 of the Salem Nuclear Power Plant.

The results of the staff's inquiry into the generic implications of the Salen unit incidents are reported in NilREG-1000, " Generic implications of the ATWS Events at the Salem Nuclear Power Plant." As a result of this investigation, the Commission (NRCl requested (by Generic Letter 83 28 dated iluly A,19831 )

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.  !

0706180464 870611 3 DR ADOCK 050

r b

, i m: t.

f. _ , -

3 1

$' 'i'

~

o >

q s 1 Thi.s report is an evaluation of-the response-submitted by Duke Power Connany, thel

' licensee'.for the' Catawba Nuclear Station, Units 1,2, for item 7.1 > (Part.?) of-l '

Generic- Letter R3-?8. . The actual documents reviewed as part of this evaluation l

.are listed:in the. references'at the end of the report.-

u 1-item'2.1 (Part'2) 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 Systen whichL inclu'des:

. periodic communication between:the. licensee / applicant and.the NSSS or the vendors. of each of the . components o# the Reactor Trip System, and .

a system of. positive feedback which confirms' receipt by the 'i licensee / applicant of transmittals of vendor technical

[

information. J EVALUATION-i The licensen for the Catawba . Nuclear Station, Units 1,? responded to the require-

- mants of item 2.1 (Part 2) with a submittal dated November 4,1983'. - The licensee i stated.in'this submittal that Westinghouse is the NSSS for the Catawha Nuclear 1

Station, Units 1,? and that the RTS is included as part of the Westinghouse inter-face ' program established for.this plant. The response also confirms that this interface program includes both periodic communication between Westinghouse and .!

.the' licensee /aoplicant and positive feedback from the licensee / applicant in the form of signed receipts for technical information transmitted by Westinghouse. k j

j

. _ _ _ _ _ _ _ - _ ____-J

a.

CONCLUSTON Based on our review of these responses, we find the licensee's statements confirm that a vendor interface program exists with the NSSS vendor for components that are reouired for performance of the reactor trip function. This program meets the reouirements of Iten 2.1 (Part ?) of the Generic Letter 83-28, and is there-fore' acceptable.

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 98)," July 8,1Q83

2. Duke Power Company letter to NRC, H. B. Tucker to D. G. Eisenhut, Director, Division of Licensing, NRC, November 4,1983.

l i