IR 05000413/1979013
| ML19274G008 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 07/19/1979 |
| From: | Herdt A, Vandoorn P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19274G005 | List: |
| References | |
| 50-413-79-13, 50-414-79-13, NUDOCS 7908270310 | |
| Download: ML19274G008 (5) | |
Text
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Report Nos. 50-413/79-13 and 50-414/79-13 Licensee: Duke Power Company 422 South Church Street Charlotte, North Carolina 28242 Facility Name:
Catawba Nuclear Station, Units 1 and 2 Docket Nos. 50-413 and 50-414 License Nos. CPPR-116 and CPPR-117 Inspection at Catawba Nuclear Station near Lake Wylie, South Carolina
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gvA. R. Herdt/, Section Chief, RC&ES Branch
,Date Signed SUMMARY Inspection on June 27-29, 1979 Areas Inspected This routine unannounced inspection involved 18 inspector-hours onsite in the areas of safety related piping, observation of installation activities including welding; reactor coolant pressure boundary piping, observation of installation activities including welding and review of welding quality records.
Results Of the 3 areas inspected, no items of noncompliance or deviations were identified.
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DETAILS 1.
Persons Contacted Licensee Employees D. G. Beam, Project Manager
- D.
L. Freeze, Project Engineer
- R. A. Morgan, Senior QA Engineer
- J. C. Shropshire, QA Engineer Other licensee employees contacted included seven construction craftsmen, and three technicians.
Other Organizations
- J. W. Kosko, Authorized Nuclear Inspector
- Attended exit interview 2.
Exit Interview The inspection scope and findings were summarized on June 29, 1979, with those persons indicated in Paragraph 1 above.
3.
Licensee Action on Previous Inspection Findings Not inspected.
4.
Unresolved Items Unresolved items were not identified during this inspection.
5.
Independent Inspection Effort a.
(Units 1 and 2) The inspector conducted a general inspection of the Unit I containment, the auxiliary building, and prefabricated piping storage areas to observe construction progress and construction activi-ties such as welding, material handling and control, housekeeping and storage.
b.
(Unit 1) The inspector observed safety related pipe welding activities to determine whether these activities were being performed in accordance with Code and procedure requirements.
Piping is being installed in accordance with the ASME Boiler and Pressure Vessel Code, 1974 edition plus addenda through the summer of 1974. Activities observed included:
general welding activities of the bottom mounted instrumentation tubing, weld nos. INV39-19 and 20 (3", Class B, final welded), weld INR100-8 (3", Class C, fitup accepted), weld no. INB351-17 (2",
no.
Class C, fitup accepted) and weld no. INV208-2 (3", Class B, fitup accepted).
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c.
(Units 1 and 2) The inspector reviewed actions which were taken con-cerning nonconforming Item No. 5469, dated April 27, 1979. This item concerned 4-inch piping previously ultrasonically tested (UT) off-site and accepted was rejected upon re-UT on-site. On April 3, 1979, the pipe manufacturer (Damascus Tube) informed Duke that 76 of 77 pieces of 4-inch pipe heat no. 837214 had been inspected by UT prior to shipment. Since the piping pieces were not uniquely serialized, all pieces required UT to assure inspection of the previously uninspected piece. Damascus Tube contracted Law Engineering Co. (Law) to UT the piping on-site. Law rejected 5 of 12 pieces tested. This UT included all piping issued for safety-related applications and some pieces still in storage. None of the issued piping was rejected. The original UT performed by Conam Inspection Division (Conam) had not resulted in any rejects. At this point all of the piping remaining in storage was returned to the pipe supplier for reinspection. Conam reinspected the piping and rejected two pieces. The rejects were marginally rejectable in one scanning direction only. The inspector questioned Duke as to what actions had been taken to assure that proper UT had been performed.
Duke indicated that Law and Conam inspectors met to UT some piping together and determine if any significant differences existed between the two methods. Although it was not verified, Duke was of the under-standing that the Law rejects were for marginal indications and dif-ferences in all UT results resulted from slight differences in UT inspector technique or use of transducer shoes manufactured by different companies which can result in slightly different angles of inspection.
Duke further provided a 100% surveillance of the re-UT of the 66 pieces by Conam.
Surveillance of approximately the first one-third of the piping was performed by the Duke Level III inspector. These actions by Duke appear to be satisfactory.
No items of noncompliance or deviations were identified.
6.
Reactor Coolant Pressure Boundary Piping (Welding) - Review of Quality Records (Unit 1)
The inspector reviewed the quality records described below relative to reactor coolant pressure boundary pipe welding to determine whether these records reflected work accomplishment consistent with NRC requirements and SAR commitments. The applicable code for this welding is the ASME Boiler and Pressure Vessel Code,Section III, Subsection NB, 1974 Edition with Addenda through the summer of 1974.
The following completed weld records were reviewed in the areas of a.
visual and dimensional inspections, weld history, preheat and interpass temperature, NDE, weld repair, welder qualification, and inspector qualification, as applicable to each weld:
Weld Number Pipe Size in Inches INC23-6 31x3.22 INC22-4 31x2.69 INC34-4 10x1.00
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INC33-6 10x1.00 INC33-4 10x1.00 b.
The following welding material records relative to receipt inspection and weld material certifications were reviewed:
Type Size Heat No.
E308-16 1/8 8184B E308-16 5/32 8617 E308-16 3/32 8085E ER308 1/8 04806 ER308 3/32 17246C ER308 1/8 17454C ER308 1/16 04184 AE308EB 5/32 E4103L308 E308-16 3/32 8154G No items of noncompliance or deviations were identified.
7.
Reactor Coolant Pressure Boundary Piping - Observation of Work and Work Activities (Unit 1)
The inspector observed non-welding work activities for reactor coolant pressure boundary (RCPB) piping. The applicable code for installation of RCPB piping is delineated in paragraph 6.
a.
Observation of specific work activities were conducted to determine confo rmance, where applicable, with the following; inspection and/or work procedures, record keeping requirements, and specified material.
Activity Weld No.
Handling of piping for weld fitup INC76-25 Handling of piping for weld fitup INC73-13 Handling of piping for weld fitup INC73-16 Handling of piping and weld preparation grinding IND37-6 8.
Safety Related Piping - Observation of Work and Work Activities The inspector observed non-welding work activities for safety related (SR)
piping. The applicable code for installation of of SR piping is delineated in paragraph 6.
Observation of specific work activities were conducted to determine a.
' conformance, where applicable, with the following; inspection and/or work procedures, record keeping, installation specifications or plans
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and use of specified materials. Handling, protection and installation of piping was observed for the following welds: IKC646-4, IKF80-15, 1YC7-2, INB175-3, INI212-6,1NI212-9 and 1NI212-10.
No items of noncompliance or deviations were identified.
9.
Reactor Coolant Pressure Boundary Piping (Welding) - Observation of Work and Work Activities (Unit 1)
The inspector observed a field weld of reactor coolant pressure boundary piping. The applicable Code for reactor coolant pressure boundary piping is delineated in paragraph 6.
The inspector examined a weld joint where the root pass was in progress to determine; weld / welder identification, qualified welder / weld procedure and physical appearance of weld.
The following weld joint was examined:
INC42-8.
No items of noncompliance or deviations were identified.