IR 05000352/1979013
| ML19309D175 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 02/07/1980 |
| From: | Ebneter S, Pavlino R, Varela A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML19309D165 | List: |
| References | |
| 50-352-79-13, 50-353-79-12, NUDOCS 8004100112 | |
| Download: ML19309D175 (6) | |
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O U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT Region I 50-352/79-13 Report No. 50-353/79-12 50-352 Docket No. 50-353 CPPR-106 License No. CPPR-107 Priority Category A
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Licensee:
Philadelohia Electric Company 2301 Market Street Philadelphia, Pennsylvania 19101 Facility Name:
Limerick Generating Station, Units 1 and 2 Inspection at:
Limerick, Pennsylvania Inspection conducted: Decemb 12-13 and 17-21, 1979 Inspectors:
J.
O NY 'I A. A. Varsla, Reactor Inspector date signed
,hll ? f/ v t,-
G/-lt9-$C'
R. T.
aolino, Reactor Inspector date signed date signed
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%M L[7//d Approved by:
c S.
D'. Ebneter, Chief, Engineering Support
'date signed Section No. 2, RC&ES Branch Inspection Summary:
Inspection on December 12-13 and 17-21,1979 (Combined Report Nos. 50-352/
79-13 and 50-353/79-12)
Areas Inspected:
Routine, unannounced inspection of Units 1 and 2 of quality assurance procedures, documentation, and work activities certaining to storage, handling, surveillance of safety related cables, and installation of safety related raceways. The inspection also included QC activities and records for the installation of masonry walls, including reinforcing steel, grout and concrete filling of cells and cavities and the visual inspection of b3th facilities. The inspection involved 45 inspector-hours by two regional based inspectors.
Resul ts: No items of noncompliance were identified.
j Region I Form 12 (Rev. April 77)
800.4100112
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DETAILS 1.
Persons Contacted Philadelphia Electric Company (PEco)
- D. Clokecy, Quality Assurance Engineer
- J. Corcoran, Field Quality Assurance Branch Head
- D. DiPaolo, Quality Assurance Engineer
- J. Fedick, Construction Engineer
R. Beech, Storage / Maintenance Engineer
- D. Blum, Area III Electrical Enginer N. Confuorto, Subcontract Coordinator
- J. Curci, Quality Assurance Engineer
- T. Fallon, Quality Control Engineer
- H. Foster, Project Field Quality Control
- J. Gwin, Project Superintendent
- T. Halliffeld, Project Field Quality Control
- M. Jan, Area Engineer J. Kelleher, Cable Engineer
- J. Kelly, Quality Control Engineer
- E. Klossin, Project Quality Assurance Engineer
- R. Leingans, Field Engineer
- R. Marino, Staff Electrical Engineer
- H. McCaw, Area I Electrical Engineer T. Metka, Documentation Clerk
- J. Rudd, Lead Quality Assurance Engineer
- R. Sewell, Area III Electrical Engineer
- D. Shaw, Staff Electrical Engineer J. Sloan, Quality Control Engineer
- M. Tokolics, Quality Assurance Engineer
- A. Weedman, Project Field Engineer Nolfi Association (NA)
D. Wenzel, Craft Supervisor l
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U.S. Nuclear Regulatory Commission (NRC)
- J. Mattia, Resident Inspector
- denotes personnel attending exit meeting of December 19, 1979.
- denotes personnel attending exit meeting of December 21, 1979.
- denotes personnel attending both exit meetings.
2.
Facility Inspection (Units 1 and 2)
I The inspectors toured both facilities in the company of the resident NRC inspector and a licensee Quality Assurance representative.
The inspectors observed work in progress, completed work and partially completed work for obvious defects and/or noncompliance with licensee comitments and regulatory requirements. The inspectors conversed with craftsmen and took special note of the presence of Quality Control personnel in the various areas i
visited.
No items of noncompliance were identified.
3.
Previously Identified Unresolved Items (0 pen) Unresolved Item (78-04-02):
Pertaining to connector qualification data requirements per. specification E-40.
The inspector reviewed additional qualification data presented by the licensee and determined that the data did not conform with specification requirements.
The licensee stated that engineering is in contact with the vendor to resolve this problem.
This item remains unresolved.
4.
Installation of Masonry Walls The inspector reviewed requirements for construction of Class I "Q" a.
concrete masonry walls, which work is subcontracted by BC to NA.
The requirements are identified in the following:
Specification A-2, Revision 12, Furnishing and Installing Masonry
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Walls Drawings Number C-605 through C-614 Typical Concrete Masonry
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Wall Details Drawings Number C-701 through C-704, Key Plans - Interior Walls,
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Architectual/ Civil Drawings QAD A-105 through A-111
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Quality Control is performed by BC in accordance with instruction
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and QC Inspection Report Numher 8031/SC-1.09 b.
The inspector observed the erection of double wythe walls with standard weight /two cell 8" masonry units, installation of mortared joints with reinforcing steel, and filling of masonry cells with grout, and cavities between wythes with concrete. Walls in the reactor building floor slab elevation 253 and 300 were observed during construction being supervised by BC's field engineer and QC engineeer.
Concrete placement by pumping, depositing, consolidating and curing was observed.
Docu-mentation of daily progress and QC verification of daily in-process inspection activities were observed fulfilled for above walls number 233, 234, and 242 in QCIR #C739.
c.
A sample record review of QC documentation was performed on work completed by NA in the reactor building area #15, elevation 253, walls number 138 through 144, erected during period June 18 through August 10, 1979. The inspector observed that QC inspection reports identified all inspection activities on work completed by NA. As identified in the specifications, the top of wall closure work, such as angles and plates, remains to be done by BC. Therefore, the irs have not been closed due to incomplete work by BC.
d.
The inspector interviewed BC personnel and reviewed engineering studies undertaken by BC to resolved void problems in the initial construction of Class II (non "Q") masonry walls. An extensive proaram of sounding by trained and qualified personnel and drilling into suspect cells disclosed that incomplete fill resulted from use of grout identified as MG-9 and the filling of block cells in wall heights above four feet.
Resulting from these studies and prior to construction of Class I, "Q" walls job specifications #A-2 were revised to limit wall height to four feet and require MG-4 mixture with finer aggregate and improved flowability.
Further engineering studies follcwing BC's void detection program procedure disclosed satisfactory results in a sounding program covering about 2,000 blocks in 30 walls constructed by NA under the revised specifications which include some "Q" walls.
e.
PECo audit report # ARC-159 of November 28-30, 1979, covering voids in block walls constructed under specification A-2 was reviewed by the inspector. The inspector also interviewed PECo and BC personnel regarding the audit findings and conclusions. The inspector observed that BC's engineering resolution of the problems which caused voids in non "Q" walls was verified at licensee request by sounding of completed
"Q" walls.
The void detection program of sounding 4,000 block cells appears to have produced satisfactory results.
No items of noncompliance were identified.
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5.
Instrumentation Components /Systeins - Quality Record Review The inspector reviewed surveillance and maintenance records for' the in-place storage of the reactor water cleanup pump / motor assembly to determine whether the records reflect work accomplishments consistent with NRC require-ments and licensee commitments noted in SAR Chapter Nos. 1, 3, 6, 7, 8, and Appendix D (including pertinent codes and standards referenced in these chapters) for the following areas: pump shaft rotation, motor insulation resistance test, oil level, protection against dirt / dust and condensation.
Items examined for this determination include:
Maintenance Action card for pump assemblies Nos.1CP-221 and 1BP-221
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Specification M-1
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Purchase Order No. LX366046
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Material Receiving Report (MRR)-PE-747
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No items of noncompliance were identified.
6.
Instrumentation Cables /Tennination - Observation of Work Activities The inspector reviewed work perfomance, partially completed work and completed work pertaining to safety related electrical cable, and raceways to determine whether the requirements of applicable specifications, work procedures and inspection procedures have been met in the areas relating to handling and storage of electrical cable and the installation of conduit and raceways.
The inspector examined the cable storage area verifying licensee a.
compliance with procedure No. 8031-JR-E3 pertaining to storage and maintenance of permanent plant cable.
No items of noncompliance were identified.
b.
The inspector examined conduit and raceway installations in the Unit 1 and Unit 2 cable spreading rooms. The inspector noted that the following conduit / raceway installations did not confonn with the requirements of Paragraph 2.3c of specification E-1046 which states, in part:
"..the
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minimum distance between redundant divisional enclosed raceways... and
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between barrier and raceways shall be 1 inch..."
The following con-duit/ raceways do not meet separation requirements:
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1CH032 and 1CI322
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1AH016, 2 BIO 59, and 1CI322
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20TBA21 and 1CH005
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1AH016 and 1CH005
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1AH017 and 10RCX01, 10RCX02, and 10RCX03
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1AG025 and 10BBA09
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18I961 and 10KYA13
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The licensee stated he was aware of the nonconformances and that he has issued in-process work orders for corrective action.
The inspector examined rework notices E-131 through E-136, dated December 7,1979, verifying licensee identification of nonconforming conduit / raceway installations.
This item is unresolved pending NRC review of licensee evaluation and corrective action (50-352/79-13-01 and 50-353/79-12-01).
7.
Unresolved Items Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items or items of noncompliance.
An unresolved item identified during this inspection is discussed in Detail, Paragraph 6.b.
8.
Exit Interview The inspectors met with licensee and construction representatives (denoted in Detail, Paragraph 1) in two separate exit meetings at the conclusion of each inspection.
The first exit meeting was held on December 19, 1979, the second on December 21, 1979.
The inspectors summarized the scope and findings of each inspection. Mr. J. Mattia, NRC resident inspector, was present for both meetings.
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