ML19305B120

Requests Test Rept Omitted from Re Analysis Demostrating Environ Qualification of Pressure Transmitters. NRC Advised WCAP-9157 Test Results Unacceptable

ML19305B120
Person / Time
Site:	McGuire, Mcguire
Issue date:	02/19/1980
From:	Baer R Office of Nuclear Reactor Regulation
To:	Parker W DUKE POWER CO.
References
NUDOCS 8003190198
Download: ML19305B120 (4)

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FEB 19 E Docket Nos. 50-369 and 50-370 Mr. William 0. Parker, Jr.

Vice President, Steam Production Duke Power Company P. O. Box 2178 422 South Church Street Charlotte, North Carolina 28242

SUBJECT:

ENVIRONMENTAL QUALIFICATION OF PRESSURE TRANSMITTERS (McGuire Nuclear Station, Units 1 and 2)

In our letter dated November 16, 1979 we requested the results of tests or analyses to demonstrate acceptable environmental qualification of pressure transmitters to be used to measure containment pressure. Our concerns centered on the Barton Model 386A transmitter used in conjunction with a Barton Model 351 remote sensing bellow.

In topical report WCAP-9157 Westinghouse provided test results for environmental qualification of the Barton Model 351 unit.

The qualification test of the remote bellow sensing pressure transmitter resulted in an anomalous pressure spike above the test chamber pressure (Sec-tion 6-6 of WCAP-9157).

The test results are unacceptable to the staff because the magnitude of the pressure spike does not meet the acceptance criteria for instrument accuracy and the anomalous indication provided by the pressure spike is contrary to the requirements of Section 4.20 of IEEE-279-1971, "IEEE Criteria for Protection Systems for Nuclear Power Generating Stations."

It is concluded in WCAP-9157 that this pressure spike is attributable to the limited size of the test chanber and that the spike would not occur in the large containment.

The discussion in WCAP-9157 of the cause of the pressure spike in the test and the assurance of its absence in the plant is inadequate.

Therefore, additional test results or analysis was requested to demonstrate that this pressure transmitter is acceptable.

1979 provided a brief summary of test conditions for an additional test thatYour let you performed.

Based on this test, you conclude that this transmitter is qualified for use at the McGuire Station.

vide a description of the test results or address the absence of any obser-Since vation of the pressure spikes or ringing phenomena noted during the Westing-house tests, we request that a copy of the test report be provided to resolve l

80031getgy,

I Mr. William 0. Parker, Jr. pgg 13 ]3t}0 these concerns. Should this test report not include sufficient data to demon-strate that this ringing phenomena did not occur, you should provide such evidence or basis upon which you conclude that these transmitters are accept-able for use at the McGuire Station.

We request that you provide this information by March 12, 1980.

Sincerely, lb W

Fog obert L. Baer, Chief Light Water Reactors Branch No. 2 Division of Project Management ccs: See next page i

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f. William 0. Parker, Jr.

FF.B 1 " g ge President, Steam Production e Pow;r Company O. Box 2178 2 South Church Street

$arlotta, North Carolina 28242 3: Mr. W. L. Porter Duke Power Company P. O. Box 2178 422 South Church Street Charlotte, North Carolina 28242 Mr. R. S. Howard Power Systems Division Westinghouse Electric Corporation P. O. Box 355 Pittsburgh, Pennsylvania 15230 Mr. E. J. Keith EDS Nuclear Incorporated 220 Montgomery Street San Francisco, California 94104 Mr. J. E. Houghtaling NUS Corporation 2536 Countryside Boulevard Clearwater, Florida 33515 Mr. Jesse L. Riley, President The Car 01ina Environmental Study Grcup 854 Henley Place Charlotte, North Carolina 28207 J. Michael McGarry, III, Esq.

Debevoise & Liberman 1200 Seventeenth Street, N. W.

Washington, D. C.

20036 Robert M. Lazo, Esq., Chairman Atomic Safety and Licensing Board U. S. Nuclear Regulatory Comission Washington, D. C.

20555 Dr. Emeth A. Luebke Atomic Safety and Licensing Board U. S. Nuclear Regulatory Comission Washington, D. C.

20555 Dr. Cadet H. Hand, Jr., Director Bodega Marine Lab of California P. O. Box 247 Bodega Bay, California 94923 I

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$[g 191990 Mr. William O. Parker, Jr.

cc: David Flesichaker, Esq.

1735 Eye Street, N. W.,

Suite 709 Washington, D. C.

20006 Richard P. Wilson, Esq.

Assistant Attorney General State of South Carolina 2600 Bull Street Columbia, South Carolina 29201 1

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