05000324/LER-1982-077, Forwards LER 82-077/01T-0.Detailed Event Analysis Encl

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Forwards LER 82-077/01T-0.Detailed Event Analysis Encl
ML20054G357
Person / Time
Site: Brunswick Duke Energy icon.png
Issue date: 06/09/1982
From: Dietz C
CAROLINA POWER & LIGHT CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20054G358 List:
References
BSEP-82-1255, NUDOCS 8206210479
Download: ML20054G357 (2)


LER-1982-077, Forwards LER 82-077/01T-0.Detailed Event Analysis Encl
Event date:
Report date:
3241982077R00 - NRC Website

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Cp&L MN,.,.

Carolina Power & Light Company; II AO,y Brunswick Steam Electric Plant P. O. Box 10429 Southport, NC 28461-0429 June 9, 1982 FILE: B09-13510C SERIAL: BSEP/82-1255 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Region II, Suite 3100 101 Marietta Street N.W.

Atlanta, GA 30303 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-324 s

LICENSE NO. DPR-62 LICENSEE EVENT REPORT 2-82-77

Dear Mr. O'Reilly:

~

In accordance with Section 6.9.1.81 of the Te hnical Specifications for Brunswick Steam Electric Plant, Unit No. 2, the enclosed Licensee Event Report is submitted. This report fulfills the requirement for a written report within fourteen (14) days of a reportable occurrence and is in accordance with the format set forth in NUREG-0161, July 1977. As per a June 7, 1982, conversation between Mr. R. M. Poulk, Jr., and Mr. Austin Hardin of your office, this report is being submitted two (2) days beyond the required reporting time frame.

Very truly yours, C. R. Dietz, General Manager

- Brunswick Steam Electric Plant RMP/mcg Enclosure.

cc:

Mr. R. C. DeYoung OFFICIAL C 8206210479 820609 f

PDR ADOCK 05000324 lcd%

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s LER ATTACHMENT - RO #2-82-77 Facility: BSEP Unit No. 2 Event Date: May 24, 1982-During a field inspection of seismic supports in the Unit No. 2 drywell, it was discovered that the baseplate on the support brace for hydraulic snubber, 2-B21-59SS320, was missing nuts on three of its four wedge anchors and the fourth anchor was missing.

An investigation of this finding revealed the subject brace and baseplate were added in 1979 as part of Plant Modification 79-89.

It is felt the brace and baseplate were improperly installed, as the unthreaded portion of anchor bolts extended approximately } inch above the baseplate thus preventing application of any torque against the baseplate due to insufficient anchor bolt embedment.

No documented record of support brace torquing or engineering walkdown of the support brace and baseplate prior to turnover of the modification could be found; however, a 1982 nonconformance report by Operations QA identified this documentation deficiency.

To return the subject support brace to operability, it will be modified in accordance with an approved plant modification during the current refueling outage prior to startup.

The present plant procedures require QC verification of as-built supports prior to acceptance by engineering. An engineering walkdown is also required prior to declaring a modification or a portion operable. A walkdown by plant engineering of the Unit No. 2 containment did not reveal any other anchor bolt deficiencies; therefore, it is felt that this is an isolated event, recurrence of which is unlikely because of improved plan't procedures now in effect.

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