IR 05000353/1987001
| ML20205G978 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 03/23/1987 |
| From: | Strosnider J, Varela A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20205G962 | List: |
| References | |
| 50-353-87-01, 50-353-87-1, NUDOCS 8703310593 | |
| Download: ML20205G978 (5) | |
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U.S. NUCLEAR REGULATORY COMMISSION
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REGION I
Report No.
50-353/87-01 Docket No. 50-353 License No. CPPR-107 Category A
Licensee: Philadelphia Electric Company 2301 Market Street Philadelphia, PA 19101 Facility Name:
Limerick Nuclear Generating Station, Unit 2 Inspection At:
Limerick Pennsylvania Inspection Conducted: January 7-9 and 12, 1987 J/_rg/71 Inspector:
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(jf. A. Varela, Lea R~eactor Engineer dat'e
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Approved by:
N bN Z3 87 J.'
R. Strosnider, Chief, Materials and date
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Process Section, EB, DRS Inspection Summary:
Inspection Report No. 50-353/8701 on January 7-9 and 12, 1987 Areas Inspected: A routine unannounced inspection was conducted by one regional-based inspector of licensee, A-E and contractor activities relating to HVAC duct work installation and support construction. Also inspected was previously installed safety-related mechanical equipment and its required long term maintenance.
Licensee administrative controls of the above were observed and records were reviewed.
Results:
No violations were identified.
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8703310593 870324 PDR ADOCK 05000353 O
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o DETAILS 1.
Persons Contacted PhiladelphiaElectricCompany(PECO}
- D. Clohecy, Construction Engineet
- G. Lauderback, QA Engineer, Acting Manager
- K. Meck, QA Engineer
- T. Szonntagh, QA Engineer
- M. Teller, Construction Engineer Bechtel Construction Incorporated (BCI)
- G. C. Bell, Project QA Engineer
- S. J. Loofbourrow, Lead Civil Quality Engineer J. Guzman, Construction Engineer /HVAC F. Keelty, Field Engineer /HVAC J. Schwamb, QC Mechanical / Maintenance E. Snatchko, Construction Engineer /HVAC Schneider Power Corporation (SPC)
K. Delarm, HVAC Craft Supervisor NRC
- R. A. Gramm, Senior Resident Inspector
- J. E. Kaucher, Resident Inspector
- Denotes attendees at exit meeting conducted December 12, 1987 2.
Inspection Purpose and Scope The purpose of this inspection was primarily to observe the coordinated effort of Bechtel engineers (Resident, Construction and QC) in HVAC in-stallation. The Class I, seismic hangers that support seismic duct work in the reactor building areas 14, 17 and 18 were inspected. The subcontractor, Schneider Power Corporation (SPC) furnishes labor and materials for HVAC installation.
The duct hangers and supports are, by union agreement, being installed by SPC to requirements identified on SPC drawings which are based on Bechtel design drawings.
The NRC inspection effort was directed at evaluating the effectiveness of corrective actions relating to NCR #11009 identified in NRC Inspection Report Number 86-19 covering the inspection conducted during November 17-21, 1986.
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Ongoing work activities and previously installed (during early building construction) safety related mechanical components were inspected to verify their long term maintenance.
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Observation of HVAC Hanger Construction and Verification of Corrective Action for Previous Nonconformances The inspector observed HVAC hanger installation activities in the reactor building, and independently reviewed the unique features of the construction details required by the SPC drawings for conformance to
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approved Bechtel standards. Where installation required design and field
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changes to be made, the documentation of their approval was verified. The following Bechtel drawing were reviewed and applied in the NRC inspector's walkdown inspection.
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Dwg. C-615, revision 25, Project Civil Standards, Standard Anchor Bolts, Schedule and Details
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Dwg. C-616, revision 26, Standard Details, Class I Seismic HVAC Ducts, Wall Floor Penetrations and FCRs number MV 108,307, 486, 571 and DCN #9 Dwg. C-1329, revision 10, Class I Seismic HVAC Ducts, Design
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Tables and FCRs number, MV 281 and 431 and Drawing C-1329/DCN #5
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Dwg. M-1169, revision 22, HVAC Plan, Elevation 273', Area 17
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Dwg. M-1180, revision 12, HVAC Plan, Elevation 313', Area 17 HVAC duct pieces, braces and supports were inspected in the following areas.
Drawing Elevation Area M-1169-1 SSM 283'
M-1169-2 SSM 283'
M-1180-1 through 6 SSM 313'
Findings The NRC inspector observed in his drawing review and work observation that construction work packages contain approved FCRs, FCNs and DCNs. These are not only required for construction drawings, but are attached also to the duct and hanger detail drawings for QC engineer inspection and verifi-cation. The NRC inspector also observed that an improvement program has been introduced in the turnover from construction to QC as part of correct-ive action for the nonconformance referenced in paragraph number 2 above.
The corrective action instituted requires construction engineers to initial the HVAC Hanger Checklis.
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This list requires sign-off by the construction engineer of appropriate attributes for each hanger. These attributes cover the following areas.
Applicable Bechtel. layout and civil drawings
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SPC hanger sketches
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Hanger inspection details covering general configuration, member sizes, hardware, dimensions, baseplates, welding or bolting Based on the above observations and independent evaluation of work per-formance, the inspector concludes that construction and quality control activities relative to HVAC systems are being accomplished in accordance with NRC requirements, PECO commitments and licensee approved procedures and specifications.
For the sample examined by the NRC, corrective actions in construction and quality control of nonconformances are concluded to be adequate to preclude repetition.
No violations were identified.
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Maintenance of Previously Installed Safety Related Mechanical Components A walkdown inspection was performed of previously installed safety related mechanical components to observe their maintenance and the extent of ongoing work.
The following units were included in the inspection:
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Diesel Generators (four units):
Various stages of piping work are underway for the diesel generator intake and exhaust. Alignment of the engines is scheduled to start in February and will require a vendor representative to be present.
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Core Spray pump:
No work was in progress on the core spray pump.
The motor remains to be installed.
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HPCI: Pipe weld preparation is underway as part of cross over pipe installation.
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RHR Heat Exchangers (two units)
The above equipment was observed to be adequately maintained for tempera-ture and individually covered for cleanliness. No violations were identified.
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Quality Assurance Activities In determining the adequacy of licensee administrative controls in assur-ing quality, the inspector reviewed documentary evidence contained in sur-veillance and audit reports of engineering and construction activities.
The licensee's audit report number 2M-537 verified that HVAC duct sections are being fabricated and installed in accordance with the design require-ments of engineering specifications and drawings. The inspector observed the audit provided assurance of quality in that specific construction
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details of duct supports conformed to engineering design criteria and appro'ved field changes. Audit report number 2M-530 provides evidence of licensee surveillance and verification of contractor's control of quality in installation of the four diesel generators and their connecting intake and exhaust pipes. The quality assurance activities are documented in the licensee's audit check list of prescribed surveillance and verification of the contractor's prescribed quality controls.
The attributes used in the audits and the required sign-off were observed based on engineering specifications and the contractor's implementing QC procedures.
The auditors were interviewed by the inspector.
Based on the above record review and interviews the inspector concludes the audits were thorough and were performed by qualified personnel.
This provides evidence that pEC0's quality assurance program is effectively administrated in the areas identified.
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Exit Meeting The NRC inspector conducted an exit meeting with the licensee and Bechtel representatives (denoted in paragraph 1).
The NRC inspector summarized the inspection findings and the licensee acknowledged these comments. No written material was provided to licensee personnel.