IR 05000313/1997001
| ML20148S277 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 07/02/1997 |
| From: | Gwynn T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Hutchinson C ENTERGY OPERATIONS, INC. |
| References | |
| 50-313-97-01, 50-313-97-1, 50-368-97-01, 50-368-97-1, NUDOCS 9707080150 | |
| Download: ML20148S277 (4) | |
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'..tM'D UNITE 3 STATES
SUBJECT:
NRC INSPECTION REPORT 50-313/97-01; 50-368/97-01
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Dear Mr. Hutchinson-
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.Thank you for your letter of June 19,1997, in response to our letter and Notice of Violation dated May 21,1997, involving lack of adequate procedures to ensure that the shield lid drain line was free from obstruction prior to use on a dry fuel storage cask.- We
- have reviewed your 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 maintained.
Sincerely, T omas P.
wy n, re or Division of Rea tor rojl cts Docket Nos.: 50-313 50-368 License Nos.: DPR-51 NPF-6 cc:
Executive Vice President
& Chief Operating Officer
Entergy Operations, Inc.
P.O. Box 31995 Jackson, Mississippi 39286-1995 i
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Entergy Operations, Inc.
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Vice President Operations Support Entergy Operations, Inc.
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P.O. Box 31995 Jackson, Mississippi 39286
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Manager, Washington Nuclear Operations i
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ABB Combustion Engineering Nuclear Power 12300 Twinbrook Parkway, Suite 330 Rockville, Maryland 20852 County Judge of Pope County Pope County Courthouse
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Russellville, Arkansas 72801 Winston & Strawn 1400 L Street, N.W.
Washington, D.C. 20005-3502 David D. Snellings, Jr., Director Division of Radiation Control and Emergency Management Arkansas Department of Health 4815 West Markham Street, Mail Slot 30 i
Little Rock, Arkansas 72205-3867 Manager Rockville Nuclear Licensing Framatome Technologies 1700 Rockville Pike, Suite 525 Rockville, Maryland 20852
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1,w :w id giF9 0000 10CFR2.201 June 19,1997 2CAN069712 F: ; - ~....
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Subject:
Arkansas Nuclear One - Unit 2 g
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Docket Nos. 50-368; 72-13 i
License No. NPF-6 Response To Inspection Report 50-368/97-12;72-13/97-01 Gentlemen:
Pursuant to the provisions of 10CFR2.201, attached is the response to the notice of violation involving the lack of an adequate procedure to ensure that the shield lid drain line was free from obstruction prior to use on a dry fuel storage cask.
Should you have any questions or comments, please call me at 501-858-4601.
Very truly yours, W f-A Dwight C. Mims Director, Nuclear Safety DCM/ajs Attachments i
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U. S. NRC June 19,1997
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2CAN%9712 PAGE 2
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cc:
Mr. Ellis W. Merschoff Regional Administrator U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064
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NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310
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London, AR 72847 Mr. George Kalman
NRR Project Manager Region IV/ANO-1 & 2 U. S. Nuclear Regulatory Commission NRR Mail Stop 13-H-3 One White Flint North 11555 Rockville Pike Rockville, MD 20852 -
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Dr. Carl J. Paperiello, Director Office ofNuclear Material Safety and Safeguards U. S. Nuclear Regulatory Commission Washington, DC 20555
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- Attachment to
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Page1 of2
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~ During an-NRC inspection conducted on April 7-9, 1997, one violation of NRC requirements was identified. In accordance with the " General Statement of Policy and Procedure for NRC Enforcement Actions," NUREG-1600, the violation is listed below:
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10 CFR Part 50, Appendix B, Criterion V states, in part, that activities affecting i
quality shall be prescribed by documented instructions, procedures, or drawings, of a type appropriate to the circumstances and shall be accomplished in accordance
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with these instructions, procedures, or drawings. Instructions, procedures, or
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drawings shall include appropriate quantitative and qualitative acceptance criteria for determining that important activities have been satisfactorily accomplished,
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s Contrary to the above, Arkansas Nuclear One procedures did not include the requirement to _ verify that the shield lid drain lines _were free from obstruction prior to use of the shield lid. This resulted in a small plastic cap being left in the drain line of the shield lid preventing the draining of water from the cask prior to welding the shield lid in place (50-368/9712-01).
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This is a Severity Level IV violation (Supplement VI)
s ResDonse to Notice Of Violation 368/9712-01 (1) Reason for the violation:
During the initial water removal phase ofloading the fourth dry fuel cask at ANO, a
. lack of water flow indicated an apparent obstruction in the drain pipe inside the cask
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or the drain line embedded in the shield lid. This discovery was made after the cask
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had been loaded with fuel and the shield lid set in place, but before any welding was started.
Shield lids staged for future loading were inspected and no obstructions were found.
However, upon inspection of additional shield lids located within a storage area, plastic protective caps were found in the bottom of several shield lid drain tubes.
Discussion with the cask fabricator revealed-that the protective caps were installed during fabrication of the shield lid to ensure that foreign material would not enter the lid drain tube and cleanliness control would be maintained. Since the first three casks did not experience any problems during the drain down process it is concluded that no
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obstruction existed within those shield lids.
A Temporary Change was made to procedure 1302.025, Spent FuelRemovalandDry
Storage Operations, to return the cask to the cask' loading pit, raise the shield lid, and
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Page 26f 2
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inspect the drain pipe and shield lid drain line. Inspection of the drain line tubing in the j
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shield lid revealed a plastic protective cap similar to that found in the stored shield lids.
L After the cap was removed the shield lid was reinstalled and the balance of the loading j
procedure was performed.
i The cause of the cap being in the shield lid during cask loading was the failure to adequately inspect the flow paths through the lid. During preparation of the lid for t
installation, the shield lid drain tubing holes received a visual inspection, however, the
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pipe cap was sufficiently deep into the penetration that it was not discovered. This
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flow path should have been inspected more thoroughly. The pipe caps are not shown
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on the vendor drawings, are not listed in any other instructions, and were not included within the three previously installed shield lids. Therefore, there was no procedural j
t requirement to inspect for the presence of the caps.
(2) Corrective steps that have been taken and the results achieved:
The cask was returned to the cask loading pit and inspected. The protective cap found
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in the shield lid drain line was removed and procedure 1302.025 was completed.
(3) Corrective steos that will be taken to avoid further violations:
Procedure 1302.024, Dry Fuel Storage Equipment Preparation, will be revised to include inspection of flow paths for cleanliness and obstructions.
This will be completed prior to resumption of dry fuel storage cask loading.
Ptocedure 1302.025, Spent Fuel Removal ami Dry Storage Operations, will be rev3 sed prior to resumption of dry fuel storage cask loading, to verify the tubing located within the shield lid is not obstructed with foreign material by injecting air through the line prior to connection of the drain tube.
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Appropriate personnel will.be trained on the above procedure changes prior to resumption of dry fuel storage cask loading.
(4) Date when full comoliance will be achieved:
Full compliance will be achieved when procedure 1302.024 is revised to include-inspection of flow paths for cleanliness and obstructions. This will be completed prior to resumption of dry fuel storage cask loading.
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