IR 05000313/1992024

Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Repts 50-313/92-24 & 50-368/92-24

ML20125D739
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/10/1992
From:	Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	Yelverton J ENTERGY OPERATIONS, INC.
References
NUDOCS 9212160011
Download: ML20125D739 (4)

Text

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DEC i 01992 Docket Nos. 50-313 50-368 License Nos. DPR-51 NPF-6 Entergy Operations, In ATTN: J. W. Yelverton, Vice President Operations, Arkansas Nuclear One Route 3, Box 137G Russellville, Arkansas 72801 Gentlemen:

SUBJECT: NRC INSPECTION REPORT NO. 50-313/92-24; 50-368/92-24 (NOTICE OF VIOLATION)

Thank you for your letter of November 25, 1992, in response to our letter and Notice of Violation dated October 27, 1992. We have reviewed your i reply and find it responsive to the concerns raised in our Notice of Violation. We will review the implementation of your corrective actions ;

during a future inspection to determine that full compliance has been achieved and will be maintaine

Sincerely,

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/A. Bill Beach, Directcr

! Division of Reactor Projects l

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Entergy Operations, In ATTN: Donald C. Hintz, President &

Chief Operating Officer l P.O. Box 31995 i Jackson, Mississippi 39286

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ATTN: R. A. Fenech, General Manager Plant Operations Route 3, Box 137G Russellville, Arkansas 72801 Entergy Operations, In ATTN: James J. Fisicaro Director, licensing

- Route 3, Box 137G Russellville, Arkansas - 72801 Honorable Joe W. Phillips County. Judge of Pope County Pope County Courthouse Russellville, Arkansas 72801 Winston & Strawn ATTN: Nicholas S. Reynolds, Es L Street, Washington, Arkansas Department of Health ATTN: Ms. Greta Dicus, Director Division of Radiation-Control and Emergency. Management-4815 West Markham Street Little Rock, Arkansas 72201-3867

. B&W Nuclear Technologies ATTN: Robert B. Borsum Licensing Representative 1700 Rockville Pike,: Suite 525

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Rockville, Maryland 20852 Admiral Kinnaird R. McKee, USN (Ret)

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OCAN119207 U. S. Nuclear :egulatory Commission Document Control Desk Mail Station 21-137 Washington, DC 20555 Subject: _ Arkansas Nuclear One - Units 1 and 2 -

Docket Nos. 50-313 & 50-368 License Nos. DPR-51 & NPF-6 Response to Inspection Report 50-313/92-24; 50-368/92-24' ,

Gentlemen:

Pursuant to the provisions of 10CFR2.201, attached-is the response to the violation identified during the inspection of activities associated with the maintenance-activity which caused a bent valve stem and cracked disk.on high pressure safety injection valve 2CV-5015-1.

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Should-you have questions or comments, please contact me'at -

501-964-860 Very truly yours, I~

James J icaro Director, Licensing-JJF/DWD/mmg attachment

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U. S. NRC November 25, 1992

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cc: Mr. James L. M11hoan U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC S7nior Re.ident Inspector Arkansas Nuclear One - ANO-1 & 2 Number 1, Nuclear Plant Road-Russellville, AR 72801 Mr. Thomas W. Alexion NRR Project Manager, Region IV/ANO-2 U. S. Nuclear Regulatory Commission NRR Mall Stop 13-H-3 One White Flint North 11555 Rockville Pike Rockville, Maryland 20852 Mr. Roby B. Bevan J NRR Project Manager, Region IV/ANO-1 U. S. Nuclear Regulatory Commission NRR Mail Stop 13-H-3 One White Flint North 11555 Rockville Pike Rockville, Maryland 20852

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OCAN119207 Page 1

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NOTICE OF VIOLATION-The NRC stated in inspection report 50-313/92-24; 50-368/92-24 that:

"During an NRC inspection conducted on September 22-through October 6, 195_, a violation of NRC requirements-was identifie In accordance with the " General Statement of Policy and Procedure for NRC Enforcement Actions," 10 CFR Part 2, Appendix C (1992), the violation is listed below:

Technical Specification 6.8.1.a required, in part, that " Written procedures shall be established, implemented.and maintained covering . . . the applicable procedures recommended in Appendix A of 2 Regulatory Guida 1.33, Revirion 2, February 1978."

Appendix A of Regulatory Guide 1.33, Revision 2, February 1978 required, in part, " Maintenance that can affect performance of safety-related equipment should be properly pre-planned and performed in accordance with written procedures . . . appropriate to the circumstances."

Job Order 00880725 required " Craft to take precautions as.necessary to keep the stem disk assembly from dropping back onto seat during removal of bonnet from valve body."

Contrary to the above, on September 27, 1992, during disassembly of high pressure safety injection Valve 2CV-5015-1, sufficient care was not taken to keep the stem disk assembly from dropping back onto the seat during removal of the bonnet from the valve body and, as a result, maintenance activity caused

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the valve stem to bend and the disk to crack all the way around the bottom of the dis This ir a Severity Level IV violation (Supplement I)

368/9224-01)."

RESPONSE TO VIOLATION 368/9224-01

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-(l) Reason for the-violation:

Entergy Operations has reviewed the conditions and

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circumstances surrounding this event to determine the root cause and appropriate corrective actions. Our root cause determination identified the following facts:

> 1) The performance of this task is considered to be

within the skill of the craft, 2) during the shift turnover briefing the craft personnel were told that bonnet galling was experienced during the stem / disk disassembly completed during the previous shift;

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OCAN119207 Page 2

• therefore, when resistance was encountered they focused on galling and lost sight of the need for maintaining the stem in mid-position, 3) craft personnel-have received training in valve fundamentals, and 4) a note prompting the craft to take precautions to keep the stem / disk assembly from dropping back onto the seat during disassembly was included in tha work-instructions

for this jo Based (n) the above, the root cause of this-violation was determined to be personnel error. The craft involved with this maintenance activity failed to take. adequate precautions to prevent the stem / disk assembly from dropping back onto the seat during valve-disassembly, as-stated in the job order.

. (2) Corrective steps taken and results achieved:

The damaged stem / disk assembly was immediately replace The valve was verified to be operable prior to returning the valve to servic The craft individuals involved in this incident received counselling regarding their failure to exercise appropriate precautions to prevent damage to the stem / disk assembl (3)-Corrective steps which will be taken to avoid further violations:

Mechanical maintenance craft personnel will receive a briefing during the weekly shop meetings regarding the-details of this event, including a discussion of the proper procedure for disassembly of_these valves. These-briefings will be completed by December 31, 199 Additionally, a similar discussion will be incorporate into the tormal, craft continuing training program during the first cycle of 1993 continuing training which is scheduled to begin on February 10, 199 The increased awareness of craft personnel as a result of counselling and crew briefings, is designed to prevent recurrence of this conditio Additionally, other corrective actions unrelated to the root cause of this condition are in progress in accordance with our corrective action progra These other corrective actions also address other instances of-bent stems and cracked disks which have previously been identified. Examples of these corrective actions include: 1) development of a procedure which will provide an additional measure of control over-the t

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OCAN119207 Page 3

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' maintenance activity.for these valves, 2) a revision to the Station Information Management System (SIMS) i Component Notes CRT screen which will prorapt the job planners to include a caution statement, to maintain the stem in mid position during disassembly of the valve, when developing the instructions for a new job order, and 3) a component redesign which will strengthen the stem and disk assembl (4) Date when full compliance will be achieved:

ANO was in full compliance with its maintenance program upon completion of counselling the individuals involved on September 29, 1992, and the completion of pust maintenunca testing on October 17, 1992, fellowing final repairs to the valv ,