ML20209B151

SER Supporting Util Responses to Generic Ltr 83-28,Item 4.5.2 Re Reactor Trip Sys on-line Testing

ML20209B151
Person / Time
Site:	Mcguire, Catawba, McGuire, 05000000
Issue date:	01/28/1987
From:	NRC
To:
Shared Package
ML20209B137	List: ML20209B133 ML20209B151
References
GL-83-28, NUDOCS 8702030536
Download: ML20209B151 (3)

Text

l ENCLOSURE I 3'

SAFETY EVALUATTON REPORT DOCKET N05. 50-3E9/370-MCGUIRE NUCLEAR STATION UNITS 1.?

GENERIC LETTER R3-28. ITEM 4.5.?

REACTOR TRIP SYSTEM DELIABILITY. nu-LINE TESTING INTRODUCTION AND

SUMMARY

Generic Letter R3-?R was issued by NRC on ,)uly R 1993, indicating actions to be tak'en by applicants and ifcensees based on the ceneric implications of the Salem ATUS events. Item 4.5 states a staff position which requires on-line functional testing of the reactor trip system, including independent testing of the diverse trip features of the reactor trip breakers, for all plants. Item 4.5.2 requires applicants and licensees with plants not currently designed to pemit this peri-

. odic on-line testing to justify not making modifications to pemit such tetting.

By letter dated November 4,1983, the licensee, Duke Power Company, responded to the staff position regarding item 4.5.2 of Generic Letter A3-?8 Our review of this response finds it to be acceptable.

l EVALUATION The licensee states that on-line functional testing of the Reactor Trip System is perfomed for both McGuire units. Further, staff review of the design has con-

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firmed that the design permits independent on-line testing of the undervoltage and shunt trip attactment.

CONCLUSION The staff finds that the McGuire Nuclear Station, Units 1 and 2, are designed to pemit on-line functional testing of the reactor trip system, including independent testing of the diverse trip features of the reactor trip breakers. Thus, the licensee meets the staff position of item 4.5.7 of Generic Letter 83-28 8702030536 870120 DR ADOCK 0500 9

I* ENCLOSURE 2

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SAFETY EVALUATION REPORT DOCKET NOS. 50 413/414 CATAWRA NUCLEAR STATION, UNITS 1,2 GENERIC LETTER 83 78, ITEtt 4.5.?

REACTOR TRIP SYSTEM RELIARILITY-ON-LINE TESTING ,

INTRODUCTION AND

SUMMARY

Generic Letter 83-28 was issued by NRC on .!uly 8,1983, indicatina actions to be tak'en by applicants and licensees based on the generic implications of the Salem ATWS events. Itam 4.5 states a staff position which requires on-line functional testing of the reactor trip systen, including independent testing of the diverse trip features of the reactor trip breakers, for all plants. Item d.5.? requires applicants and licensees with plants not currently designed to permit this peri-odic on-line testing to ,iustify not making nodifications to permit such testina.

By letter dated No'vember 4,1983, the licensee / applicant, Duke Power Conpany, responded to the staff position regarding item 4.5.2 of Generic letter 83 78 Our review of this response' finds it to be acceptable.

EVALUATION The licensee / applicant states that the Catawba Nuclear Station, tinits 1 and 2, designed to allow on-line testing of the Reactor Trip System which will include independent testing of the undervoltage and shunt trip attachments.

a i/ .

,l, -?-

P CONCLt!SION ,

The staff finds that the Catawba Nuclear Station, linits 1 and 2, are designed to permit on-line functional testino of the reactor trip system, including in.

dependent testing of the diverse trip features of the reactor trip breakers.

Thus, the licensee / applicant meets the staff position of item 4.5.7 of Generic letter 83-28.

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