AECM-83-020, Final Deficiency Rept PRD-82/37 Re Failure of Qualified Cables to Pass IEEE Flame Test.Initially Reported on 821214. Design Change DCP-82/3196 Initiated.Also Reported Per Part 21

Final Deficiency Rept PRD-82/37 Re Failure of Qualified Cables to Pass IEEE Flame Test.Initially Reported on 821214. Design Change DCP-82/3196 Initiated.Also Reported Per Part 21

ML20070P672
Person / Time
Site:	Grand Gulf
Issue date:	01/13/1983
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-83 10CFR21, AECM-83-020, AECM-83-20, NUDOCS 8301260381
Download: ML20070P672 (5)

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MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi P. O . B OX 1640. J AC K S O N, MIS SISSIPPI 39 205 J AMES P. McGAUGHY, JR. January 13, 1983'_

A5SISTANT VICE PRE SIDENT I Of fice of Inspection & Enforcement "

U. S. Nuclear Regulatory Commission ,,

Region II 101 Mariet t a Street , N.W. p Suite 3100

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Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Regional Administrator

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket No. 50-416/417 License No. NPF-13 File 0260/15525/15526 PRD-82/37, Final Report, Delaval: Failure of Qualified Cables to Pass IEEE Flame Test AECM-33/020 On December 14, 1982, Mississippi Power & Light Company notified Mr. R.

Butcher, of your of fice, of a Potentially Reportable Deficiency (PRD) at the Grand Gulf Nuclear Station (GGNS) construction site. The deficiency concerns qualified cable on the Transamerica Delaval Division I and II diesel generators and panels which failed the IEEE 383 flame test.

MP&L has evaluated this deficiency and determined that it is reportable l under the provisions of 10CFR21 for Unit 1 and 10CFR50.55(e) for Unit 2. All details are provided in our attached Final Report.

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( Yours truly, f *f '

- J. P. McGaughy, Jr.

I ACP:dr ATTACHMENT

-: See page 2 l

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8301260381 830113 PDR ADOCK 05000416 S PDR T g Member Middle South Utilities System

5 Mr. J. P. O' Reilly AECM-83/020 NRC Page 2 cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner Mr. Richard C. DeYoung, Director Office of Inspection & Enforcement

U. S. Nuclear Pegulatory Commission j Washington, D.C. 20555 Mr. G. B. Taylor South Miss. Electric Power Association P. O. Box 1589 Hattiesburg, MS 39401 i

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Attachment to AECM-83/G20 Page 1 of 3 FINAL REPORT FOR PRD-82/37

1. Namej and address of the individual .. . informing the commission:

J. P. McGaughy, Jr.

Assistant Vice-President, Nuclear Production P.O. Box 1640 Jackson, Mississippi 39205

2. Identification of the facility ... which ... contains a deficiency:

Grand Gulf Nuclear Station (GGNS) Units 1 and 2 Port Gibson, Mississippi 39150 NOTE: 10CFR21 ts not applicable for Unit 2 as the diesel gener-ators have not been turned over to MP&L.

3. Identification of the firm . . . supplying the basic component which . . .

contains a deficiency:

The Diesel Generators were manufactured by Transamerica Delaval, Inc.,

Oakland, California and supplied to Grand Gulf by Bechtel Power Corporation, Gaithersburg, Maryland.

4. Nature of the deficiency .. . and the safety hazard which .. . could be created by such a deficiency .. .:

A. Description of the Deficiency On November 8, 1982, Mississippi Power & Light Company received a letter from Transamerica Delaval, Inc., notifying us of a potential problem concerning the Division I and II diesel generators supplied to Grand Gulf.

I The deficiency involves commercial grade cable that was used for IE cable in certain circuits on the Division I and II diesel generators l

( supplied by Transamerica Delaval, Inc. Trangamerica Delaval has recommended replacement of the cable due to the cable recently fail-ing the IEEE 383 flame test. The af fected cable is the shielded cable from the terminal block to the Airpax tachometer relay in the engine control panel, the shielded cable from the Airpax magnetic pickups to the juncti)n boxes on the side of the engine and the multiconductor cable from the engine side mounted junction box to the Woodward governor actuator.

Attachment to AECM-83/020 Page 2 of 3 B. Analysis of Safety Im,lications Loss of the shielded cables associated with either the Airpax tacho-meter relay or the Airpax magnetic pickups would result in the loss of the 425 RPM " Ready-to-Load" signal to the diesel generator output breaker preventing the automatic closure of the breaker and loaning of the generator. The design function of the system would not he accomplished and in the unlikely event of a loss of coolant accident concurrent with a design basis fire could create a substantial safety hazard.

5. The date on which the information of such deficiency . .. was obtained.

Mississippi Power and Light received information of the potential problem from Transamerica Delaval, Inc. on November 8,1982. We reported the potential deficiency to Mr. Butcher, of your of fice, on December 14, 1982. An evaluation for Part 21 applicability has been completed for Unit 1.

6 In the case of the basic component . .. the number and location of all such component s.

We do not have knowledge of the location of other diesel generators besides the four located at Grand Culf. (Two for each Unit).

7. The corrective action which has been taken . . . the name of the individual

. . . responsible for the action; and the length of time that has been . . .

taken to templete the action.

A. Corrective Actions Taken MP&L has initiated a design change, DCP-82/3196, for the Unit 1 Division I and II diesels to implement the manufacturer's recom-mended corrective action. This will involve replacing the currently installed commercial grade shielded cable with qualified cable.

The corrective actions for the Unit 1, nivision I and II diesels are expected to be completed prior to the next criticality.

Our Architect / Engineer has been notified to initiate the appropriate corrective actions for the Unit 2, Division I and II diesel generators.

B. Responsible Individual 1

C. K. McCoy T. H. Cloninger Nuclear Plant Manager Unit 2 Project Manager Mississippi Power & Light Co. Mississippi Power & Light Co.

Responsible for Unit 1 Responsible for Unit 2 l

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Attachment to AECM-83/020 Page 3 of 3 C. Length of Time to Complete Actions Corrective actions for Unit I will be completed prior to the next criticality.

Corrective actioris for Unit 2 will be completed prior to turnover to HP&L.

8 Any advice related to the deficiency ... that hA; been, i being, or will be given to purchasers or licensees:

I As the deficiency did not originate with MP&L, we have no advice to of fer.

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