ML20099J127
| ML20099J127 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 11/05/1984 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-286 131, NUDOCS 8411280521 | |
| Download: ML20099J127 (5) | |
Text
f 50 'l00 CD&L 8'I ET P. O. Box 101, New Hill, N. C. 27562 November 5,1934 Mr. James P. O'Reilly NRC-236 United States Nuclear Regulatory Commission Region 11 101 Marietta Street, North uest (Suite 2900)
Atlanta, Georgia 30323 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT 1936 - 900,000 KW - UNIT 1 UNVERIFIED ANCHOR BOLT MATERIAL TYPE -ITEM 131
Dear Mr. O'Reilly:
Attached is our second interim report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e), on March 6,1984. CP&L is pursuing this matter, and it is currently projected that corrective action and wbmission of the final report will be accomplished by July 1,1935.
Thank you for your consideration in this matter.
Yours ver truly,
??f/ M R. M. Parsons Project General Manager Shearon Hnis Nuclear Power Plant RMP/rt Attachment cc:
Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)
Mr. R. C. DeYoung (NRC)
$k3!o!bo!000 0 FICIAL COPY Id sy u
Mr. J':m';s P. O'Reilly
~
NRC-236 bcc: Mr. H. R. Banks Mr. C. S. Bohanan Mr. H. W. Bowles Mr. C. Carmichael (2) -
Mr. G. S. Cashell Mr. N. 3. Chiangi Mr. A. B. Cutter.
Dr. T. S. Elleman Ms. S. F. Flynn -
Mr. G. L. Forehand Mr. 3. F. Garibaldi (Ebasco)
Mr. 3. L. Harness Mr. P. C. Hopkins Dr. 3. D. E. Jeffries Mr. I. A. Johnson Mr. L. I. Loflin Mr. R. E. Lumsden Mr. R. L. Mayton, Jr.
Mr. M. A. McDuffie Mr. S. McManus Mr. C. H. Moseley, Jr.
Mr. D. L. Nordstrom (LIS)
Mr. R. M. Parsons Mr. Sheldon D. Smith Mr. A. C. Tollison Mr. R. A. Watson Mr. M..ihannon (Westinghouse)
Mr. 3. L. Willis Mr. T. A. Baxter (Shaw, Pittman, Potts & Trowbridge)
Mr. M. F. Thompson Mr. S. Hinnant Mr. J. F. Nevill File: MI/A-20 File: H-X-0544 m
6 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO.1 SECOND INTERIM REPORT UNVERIFIED ANCHOR BOLT MATERIAL TYPE ITEM 131 November 5,1984 REPORTABLE UNDER 10CFR50.55(e)
J
SUBJECT:
Shearon Harris Nuclear Power Plant, Unit 1, 10CFR50.55(e), reportable deficiency. Anchor Bolt identification / Installation.
ITEM:
Arichor bolt material type in the Power Block was not verified by Construction Inspection.
SUPPLIED BY:
Not a supplier-related deficiency.
NATURE OF DEFICIENCY:
Construction Inspection was required to verify anchor bolt type; however, only a dimensional check was made to identify anchor bolts with missing or illegible tags. Since certain anchor bcit types have the same physical dimensions yet different material requirements, low strength bolts could have been substituted for high-strength bolts.
DATE PROBLEM OCCURRED:
Prior to April 13,1933.
DATE PROBLEM REPORTED:
On May 3,1933, CP&L (Mr. N. 3. Chiangi) notified the NRC (Mr. A. Hardin) that this item was potentially reportable.
On March 6,1934, CP&L (Mr. N. J. Chiangi) notified the NRC (Mr. A. Hardi,) that the item was reportable per the proeisions of 10CFR50.55(e).
SCOPE OF PROBLEM:
Random sampling has indicated some substitution of bolts, and af ter additional sampling it was determined that a comprehensive test program covering all anchor bolts in question would be required.
SAFETY IMPLICATION:
The requirement for higi-strength bolting material indicates that design loads are relatively high.
Thus, the possi5ility exists that the allowable loads on low-strength materia; substituted could be exceeded, and engineering evaluation will be required.
REASON DEFICIENCY 15 REPORTABLE:
Reportable due to the extensive evaluation and/or rework required.
CORRECTIVE ACTION:
The appropriate site technical procedure has been l
revised to specifically require material identification as part of the anchor bolt inspection.
i CORRECTIVE ACTION (Cont'd.h _
A 100% sampling program has been initiated to identify anchor bolt substitutions and to permit engineering evaluation for acceptability or further corrective action. Samples of the anchor bolts (by cutting a section off the bolt) are taken for testing in the materials test lab. Each substitution will be identified on a permanent waiter and forwarded to Engineering. Sampling of all accessible bolts in question has been completed and the samples have been forwarded to the materiais test lab, where testing is in progress.
FINAL REPORT:
A final report will be issued when the evaluation and any necessary rework are complete. We now expect to issue a final report by July 1,1985.
b
,