ML20028A558

Interim Deficiency Rept PRD-82/34 Number 2 Re Incorrect Wipe Setting of Normally Closed Contacts Converted from Open Contacts.Initially Reported on 820802.Part 21 Rept Applies to Unit 1 Only.Final Rept Expected by 830228

ML20028A558
Person / Time
Site:	Grand Gulf
Issue date:	11/12/1982
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-82 10CFR-050.55E, 10CFR-50.55E, AECM-82-544, NUDOCS 8211220287
Download: ML20028A558 (5)

Text

MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi ,

P. O. B O X 164 0. J AC K S O N, MIS SIS SIP PI 3 9 2 05 l4, o .

a, 8

JAMES P. McGAUGHY, JR '

'e

• ASS:ST ANT vlCE PRESIDENT ,

Of fice of Inspection & Enforcement Yy U. S. Nuclear Regulatory Commission

• Region 11 f0 101 Marietta Street, N.W.

Suite 3100 Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Regional Administrator

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 License No NPF-13 Docket Nos. 50-416/417 File 0260/15525/15526 PRD-82/34, Interim Report 4 2, HFA Relay Contact Settings AECM-82/544 -

Re ference : AECM-82/372, 9/1/82 -

On August 2, 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 de ficiency' concerns the incorrect " wipe" setting of normally closed contacts which had been con-verted from normally open contacts on some HFA relays.

We have determined that this deficiency is reportable under the provis-ions of 10CFR21 for Unit 1 and urier the provision of 10CFR50.55(e) for Unit .

2. The determination as to 10CFR21 applicability for Unit 2 has not been made at this time.

Our Interim Report is attached. A Final Report is expected to be submit-ted by February 28, 1983.

y, To)st 39 J. P. McGaughy, Jr.

KDS:dr .. ..

~"

ATTACHMENT .

cc: See page 2 O,NI

,, , k 8211220287 821112 PDR ADOCK 05000416 m -

S PDR Member Middle South Utilities System

M

, Mr. J. P. O' Reilly AECM-82/544 NRC Page 2 cc: Mr. N. L. St ampley i Mr. R. B. McGehee Mr. T. S. Conner Mr. Richard C. DeYoung, Director

Of fice of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. C. B. Taylor South Miss. Electric Power Association P. O. Box 1589 Hattiesburg, MS 39401 4

l t

[

Y f

.I l

d e sw i

i i

Atttchm:nt to AECM-82/544

1. Page 1 of 3 INTERIM REPORT #2 FOR PRD-82/34

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

J. P. McGaughy, Jr.

Assistant Vice-President, Nuclear Production P.O. Box 1640 Jackson, Mississippi 39205 Notification of Part 21 applicability made to Mr. J. P. O'Reilly, NRC, Region II, by telephone on August 31, 1982. This deficiency was also reported under 10CFR21 by General Electric to the NRC in their letter dated July 27, 1982.

2 Identification of the facility which contains a deficiency:

Grand Gulf Nuclear Station (OGNS) Units 1 and 2 Port Gibson, Mississippi 39150 NOTE: 10CFR21 applies only to Unit 1.

3. Identification of the firm supplying the basic component which contains a deficiency:

Supplied to Grand Gulf by General Electric Company, San Jose, Cali fornia.

We are currently investigating whether any defective relays were supplied by the 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 i

I The deficiency concerns the incorrect " wipe" setting of normally closed (NC) contacts on some HFA relays which had been converted from

! normally open (NO) contacts. Seismic qualification was performed by

! General Electric with correct contact " wipe" settings; therefore, a relay with less than a minimum wipe setting does not fall within the component qualification limits.

B. Analysis of Safety Implications The potential exists for a NC contact in the HFA relay to fail to properly activate engineered safety systems during a seismic event.

The failure of NC contacts to trip the reactor recirculation pumps, per design, due to a turbine stop valve closure or a turbine control valve fast closure, might create thermal transients which may lead to fuel cladding failure.

1 i

i'

..m_ -~- .. .. _ . _ . , r_..

- Attachment to AECM-82/544

< Pcge 2 of 3

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

Mississippi Power and Light received information of the deficiency on July i 30, 1982. We reported the deficiency to Mr. R. Butcher, of your office, as a Potentially Reportable Deficiency for Unit 2 on that date and stated that an evaluation would be performed to determine applicability of Part 21 for Unit 1. An evaluation for Part 21 has been completed and the MP&L

" Responsible Officer," Mr. J. P. McGaughy, Jr., has been notified. This 3

deficiency is also applicable to Unit 2 under the provisions of 10CTR50.55(e), however the determination for 10CFR21 applicability for Unit 2 has not been made at this time.

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

The relays are located at the Grand Gulf Nuclear Station, Units 1 and 2.

Locations of other plants which may have defective relays were given by General Electric in their July 27, 1982 letter to the NRC.

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 complete the action.

A. Corrective Actions Taken General Electric issued FDI-WAVA for problem identification and correction in the NSSS scope of supply for Unit 1 and FDI-WBSH for the NSSS scope of supply for Unit 2. MP&L has, at this time, inspected and corrected 18 of the 24 relays identified by General Electric in FDI-WAVA. DCP-82/3122 has been issued to inspect and correct the remaining 6 relays identified, and will be completed prior to exceeding 5% reactor power.

For the BOP scope of supply, an investigation is currently underway to identify any relays with a similar defect. MP&L is performing the investigation for Unit 1. Our Architect / Engineer has issued Quality Action Request (QAR) 352 for Unit 2.

B. Responsible Individual i

Unit 1 Unit 2 C. K. McCoy T. H. Cloninger Plant Manager Unit 2 Project Manager Mississippi Power & Light Co. Mississippi Power & Light Co.

l l

.' Attachment to AECM-82/544 e Psga 3 of 3 C. Length of Time to Complete Actions i It had previously been reported that all inspections and corrective actions for Unit I will be completed by October 30, 1982. They have not been completed at this time. A projected completion date is not available at this time for Unit 1 or Unit 2.

t MP&L plans to submit a Final Report, giving extent of the deficiency and dates of completion of corrective actions, by February 28, 1983.

8 Any advice related to the deficiency ... that has been, is being, or will be given to purchasers or licensees:

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

4 l

J l

d

't i

1

-, ,. -. - , _ - . . , - _ . - ..-,,-,.m., . , - - - - - -- - - . - - - , - - - - - . ..-....,_,---..-.,.-----..,,-,-.------,...-.,.e- - - - .