IR 05000414/1985048

Insp Rept 50-414/85-48 on 851007-10.No Violations or Deviations Noted.Major Areas Inspected:Previously Identified Enforcement Item & Followup Inspector Items Re Epoxy Matls, Concrete Testing Lab & Standby Nuclear Svc Water Dam

ML20198E020
Person / Time
Site:	Catawba
Issue date:	10/25/1985
From:	Conlon T, Harris J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
Shared Package
ML20198E009	List: IR 05000414/1985048 ML20198E005
References
50-414-85-48, IEIN-83-40, NUDOCS 8511130117
Download: ML20198E020 (3)

Text

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UNITED STATES p calog'o NUCLEAR REGULATORY COMMISSION

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o HEGION ll 101 MARIETTA STREET, j

• * ATLANTA, GEORGI A 30323

'+9 . . . . . ,o Report Nos.: 50-414/85-48 Licensee: Duke Power Company >

422 South Church Street Charlotte, NC 28242 Docket Nos.: 50-414 License Nos.: CPPR-117 Facility Name: Catawba i Inspection Conducted: October 7-10, 1985 Inspector -

._ / # - E P F f J. R. Harris

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Date Signed .

Engineering Branch i Division of Reactor Safety Approved by: /O- 2f - M T. E. Conlon, Section Chief Date Signed Engineering Branch Division of Reactor Safety SUMMARY Scope: This routine, unannounced inspection involved 28 inspector-hours on site in the areas of a previously identified enforcement item, a previously identified Inspector Followup item regarding the use of epoxy materials, the concrete testing laboratory, and the standby nuclear service water dam, Results: No violations or deviations were identifie h1A[M O

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% REPORT DETAILS 1. - Persons Contacted Licensee Employees-V*L. C. Arnold, Civil. Field Engineer

• P. LeRoy, Licensing Engineer

• H. D. Mason, Quality Assurance (QA) Engineer Civil

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• F.- P. Schiffley, Licensing Engineer NRC~ Resident Inspector

• P. LK. VanDoorn

• Attended exit interview . Exit Interview .

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The inspection scope and findings were summarized on October 10, 1985, with those persons indicated in_ paragraph above. The inspector described the -

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areas inspected' and discussed- in detail the inspection finding No dissenting comments were received from the license L The licensee did not identify as proprietary ,any of the material provided _ to or reviewed by the inspector during this inspeej; e . Licensee Action on Previous Enforcement-Matters '

(Closed) Violation 413/84-49-01, 414/84-23-01 - Failure to Identify Concrete Honeycom Review of ' documentation for wall pours in ' Units 1 and 2 Containment buitdings, showed that honeycomb was:not being identified at the ' time of form removal as . required by procedure M-2, ' Revision 8, Inspection of Design Concret The inspector examined the licensee's response dated June 22, 1984, and corrective action taken to resolve this item. In response to this item the licensee reinspected the concrete -surfaces of a11 ' structures in Units 1-and 2 power block'for: evidence of honeycomb. This resulted in any previously unidentified honeycomb being ' identified and repaired in accordance with:

-procedure and specification requirements. During this inspection, the NRC inspector examined documentation of honeycomb repairs and did a walkdown

. inspection of honeycomb repairs made on all structures in the Unit 2 powe block. Inspection of documentation of honeycomb repairs and results of-

. honeycomb repairs made on structures in the Unit 1 power block was made by -

'the NRC' inspector during an inspection conducted May 1-4, 1984. Examination of repairs and documentation of repairs showed that honeycomb was being identified and repaired'in accordance with licensee requirements. Concrete activities for Units 1 and 2 are for the most part completed. This item is close .

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e- 2 L4.- Unresolved Items Unresolv'ed items were not identified during the inspectio ' Independent Inspection Effort Construction Progress

- The inspector conducted a general inspection of the concrete testing Llaboratory and. the Standy Nuclear Service Water Dam. Inspection of these items showed that the concrete testing and curing facilities _ were being maintained .in- accordance with licensee requirements and that.the Nuclear S_ervice Water Dam monitoring instrumentation was in place and being properly maintaine Within the areas examined, no violations or deviations were identifie '

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-Previously Identified Inspector Followup Item (IFI)

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'(Closed). Inspector Followup Item.(IFI) 413/84-30-01 and 414/84-15-01. This item was opened as a Followup of Information Notice No. 83-40, Need t Environmentally Qualify Epoxy Grouts and Sealers. This Information Notice was . issued by NRC to alert licensees to the potential degradation of expoxy formulations by heat and radiatio Discussions with responsible licensee engineers and examination o documentation showed that two types of expoxy materials were used in areas that will' be subjected to high heat _or radiatio One type called Sikadur Hi Mod Gel'was used as a gap filler behind baseplates in structures outside the containment building. -The other type called Sikadur Hi-Mod was used as a bonding agent in repairing concrete _ honeycomb in all structure In following up on Information Notice No. 83-40, the licensee investigated all areas where these materials were used and did an analysis of the-performance of these materials under the . worst postulated accident conditions. These were a design base accident in the Auxiliary building, a main steam line break in the Doghouse, and a loss of' coolant accident i the Containment building.-

Review of this analysis and supporting test data showed that the baseplates with the epoxy material used as a gap filler, and anchors embedded in

. honeycomb repair using the _ epoxy material as a bond filler would not fail during these worst' postulated accident scenarios. This item is closed.