ML20101K052

Responds to NRC Re Violations Noted in Insp Rept 50-416/84-37.Corrective Actions:Memo Issued on 840921, Emphasizing Need to Have Copy of Valve Lineup in Field When Performing Valve Lineups

ML20101K052
Person / Time
Site:	Grand Gulf
Issue date:	11/16/1984
From:	Dale L MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20101K021	List: ML20101K052
References
NUDOCS 8412310213
Download: ML20101K052 (3)

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.. G P MISSISSIPPI POWER & LIGHT COMPANY i

Ylfrigl8tplV Afississippi U

P. O. BON 1640, J ACKSON. MIS SISSIPPI 39205 p h yyggge $ N 4 N

NUCLEAR LICEN$ LNG & 1AFETY oEPARTMENT yg U.S. Nuclear Regulatory Commission Region II 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30323 Attention:

Mr. J. P. O'Reilly, Regional Administrator

SUBJECT:

Grand Culf Nucicar Station Unit 1 Docket No. 50-416 License No. NPF-29 File:

15524/15521 Report No. 50-416/84-37, dated October 17, 1984 (MAEC-84/0374)

AECM-84/0493 This is in response to your letter to Mississippi Power & Light Company from Richard C. Lewis, dated October 17, 1984. Attached is the response to the Notice of Violation enclosed with your letter.

Should you have any questions, please contact my office.

ours truly,

. F. Dale Director RLS/SHH:rg Attachment cc:

Mr. J. B. Richard (w/a)

Mr. R. B. McGehee (w/a)

Mr. N. S. Reynolds (w/a)

Mr. G. B. Taylor (w/o)

Mr. Richard C. DeYoung, Director (w/a)

Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.

20555 0412310213 041210 P.DR ADOCK 05000 0

Member Middle South Utilities System

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Attachment to AECM-84/0493 NRC VIOLATION 50-416/84-37-01

1. ADMISSION OR DENIAL OF THE ALLEGED VIOLATION Mississippi Power & Light Company (MP&L) admits to the alleged violation; however, there was no effect on the health and safety of the public.

II. REASON FOR THE VIOLATION IF ADMITTED The step being performed was a prerequisite to verify the HCU was in a normal lineup per the C11-1-SOI.

This verification did not necessarily require a valve lineup be reperformed if a valid lineup was in the lineup file and if no work had been done on the HCU to cause the Shift Supervisor to feel the lineup was not valid. This is a standard i

prerequisite, that a system be lined up per the SOI. However, if a lineup is opted to be performed, as it was in this case, the operator performing the lineup must have the lineup form in his hand and must initial the lineup as it is being performed. This is a requirement of Procedure 02-S-01-2.

Additionally, communications were poor between the HCU floor and the Control Room. On each HCU, there are valves with similar numbers, in this case F101XX and 101XX. The XX suffix is a two-letter designation of the associated control rod. The F101XX valve is the insert line vent

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valve associated with the control rod and the 101XX valve is the insert riser isolation valve on the HCU for the same control rod. With poor communications, these two valves can be confused.

j III. CORRECTIVE STEPS WHICH HAVE BEEN TAKEN AND THE RESULTS ACHIEVED A memo from the Operations Superintendent to all operating personnel was l

written on September 21, 1984, describing the above event. Emphasis was l

placed on the following points / requirements.

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To have a copy of the valve lineup in the field when performing l

valve lineups, l

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Each direction given must be repeated back and notification to the Control Room when the action is completed, and o

Each operator must be aware of the similarity problems with the valve numbering system on HCUs.

l To date no further incidents of this nature have occurred.

IV. CORRECTIVE STEPS WHICH WILL BE TAKEN TO AVOID FURTHER VIOLATION Mississippi Power & Light considers the action taken in III above sufficient to prevent recurrence.

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-Attcchment to AECM-84/0493-

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V.. DATA'WHEN FULL ~ COMPLIANCE WILL BE ACHIEVED Full l compliance was achieved September ~21, 1984.

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