IR 05000255/1979012
| ML18043B108 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 09/11/1979 |
| From: | Danielson D, Yin I NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML18043B107 | List: |
| References | |
| 50-255-79-12, NUDOCS 7910240147 | |
| Download: ML18043B108 (5) | |
Text
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No. 50-255/79-12 Docket No. 50-255 Licensee:
Consumers Power Company 212 West Michigan Avenue Jackson, MI 49201 Facility Name:
Palisades Nuclear Power Plant Inspection At:
Palisades Site, Covert, Michigan Inspection Conducted:
August 28, 1979 Inspector:
I. T. Yin Approved By:
D. H. Danielson, Chief Engineering Support Section 2 Inspection Summary License No. DPR-20 Inspection on August 28, 1979 (Report No. 50-255/79-12)
Areas Inspected:
Licensee actions relative to IE Bulletins No. 79-14, No. 79-02, and No. 79-04 including general discussion on NRC requirements work procedure review, records review, and observation of wor The inspection involved 8 inspector-hours ondite by one NRC inspecto Results:
No items of noncompliance or deviations were identified.
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DETAILS Persons Contacted Consumers Power Company (CPC)
- J. W. Lewis, Plant Manager
- K; W. Berry, Technical Superintendent
- K. E. Osborne, Senior Engineer
- K. Graves, Project Field Engineer
- P. Smith, Engineer Supervisor
- S. Kapur, Group Supervisor
- N. M. Solanki, Senior Engineer
- Denotes those attending exit intervie Functional or Program Areas Inspected General IEB 79..:.04 "Incorrect Weights for Swing Check Valves Manufactured By Velan Engineering Corporation", dated March 30, 1979 In review of a licensee response letter dated May 1, 1979, and in discussion with the licensee representatives at the site, it was determined that there are no Velan swing check valves with a diameter greater than or equal to 3-inches installed in seismic Category I piping system IEB 79-04 is considered to be close IEB 79-14, "Seismic Analysis for As-Built Safety-Related Piping Systems," Revision 1, dated July 18, 1979; IEB 79-02, "Pipe Support Base Plate Design Using Concrete Expansion Anchor Bolts," Revi-sion 1, dated June 21, 1979 The licensee combined the above IEB's in one progra Five procedures were prepared:
FPl for inspecting anchor bolt and hanger configuration FP2 for inspecting piping configuration FP3 (draft) for anchor bolt testings FP4 (draft) for repairing bolts and base plates FPS (in preparation for msicellaneous hanger repairs)
Only procedures FPl and FP2 had been reviewed and approved for use by the CPC Plant Review Committee (PRC).
As of the date of this
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inspection, no anchor bolts had been tested per !EB 79-02, however, testing preparation has been initiated. Furthermore, the anchor bolt test sampling size and statistical analysis developed by B-AA had not been reviewed and approved by the license The licensee stated that the plant refueling outage is scheduled for September 8, to December 1, 1979, and if significant IEB 79-02 and IEB 79-14 problems are identified, the outage may be extended to permit additional wor,
Procedures Review The inspector reviewed the following procedures: B-AA Field Procedure No. 12447-033-FPl, "Inspecting Concrete Anchors and Base Plates for Seismic Safety System Pipe Supports",
Revision 1, dated August 14, 197 No adverse comment B-AA Field Procedure No. 12447-033-FP2, "Walkdown Verification of Pipe Configuration, Hanger Locations, and Configuration for Seismic Safety System Pipe Supports", Revision 1, dated August 27, 197 The inspector commented that the procedure did not address the following requirements:
(1) Evaluation process after nonconformances have been identified, including (a) specific time allowance for reporting to NRC, i.e. an enginee'ring judgement within 2 days followed by an analytical engineering evaluation within 30 days, and (b) licensee corrective actions and criteria for allowing temporary operation if system operability is in jeopard (2) Verification of pipe sizes, schedules, and material (3)
Piping seismic restraint clearance including gaps on U-bolts directional restraints or guides, and excessive gaps in pin connecting bolt hole (4) Verification of pipe clamp tightness or required torquing to ensure functionability of the restraint syste The inspector stated that there appeared to be no overall program to control and evaluate the testing and result Specifically, for IEB 79-02 there appeared to be a lack of (1) engineering documentation in areas of plate thickness and attachment distance ratio other than that specified in the Bulletin, (2) bolt design safety factor compared with what was tested, (3) pre-load requirements during dynamic
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tension and shear interactions, and (4) test data that supports the formulation developed for static tension and shear interaction is conservativ For both IEB 79-02 and IEB 79-14 there appeared to be a lack of procedural provisions to establish qualification requirements for the worker Provisions should include indoctrination and training in the classroom and on the jo For IEB 79-14 there appeared to be a lack of instructions on how to conduct indirect measurements, i.e. using plumb lines and weights, and the determination of the accuracy of such indirect measurement No items of noncompliance or deviations were identifie.
Records Review The inspector reviewed the licensee's "Daily Discrepancy Report of Hanger and Pipe System Inspections" from August 1, 1979 to August 18, 197 Systems where discrepancies had been identified included:
HC-7-3";
GC-1-12"; DC-2-4"; HC-3-14" and 18"; GC-8-14"; GC-4-6"; DC-1-3";
DC-1-6"; HBD-8-14"; HB-24-10", 14", 16", 18", 20", and 24"; HC-20-3".
The inspector commented that some of the deficiencies should receive immediate corrective actio Included in these are: HC-3-18", H216 and H217 Concrete cracked and bolt pullout HB-24-3, H16 and HlS Gaps and holes between base plate and concret M209 H24-4 H22, H23, and H27 Gap between base plate and concret Some hangers are loose, not supporting pip HC-3-18" H215 One bolt pulled out, three bolts missing, pipe clamp bent at opposite hange HEB-14-6", H222 Bent hanger ro GC-1-12" H141.1 and H142 Bolt missing on plate and on clam GC-1-10" H161 and Hl38 Pipe clamp bolt missing, some nuts not engage HC-20-3" Anchor bolts are angle HB-24-18" R307.1 Crack in concrete imbe I )
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4 - HB-24-10" H301 Spring cam is changes to a rigid suppor HB-24-10" H306 Missing - no evidence of having been installe The inspector's summary of his record review is as follows:
For damaged or missing hangers and restraints and for those that are improperly installed, corrective action should be taken to restore the component or structure to its operating conditio Reports of these nonconformances should be submitted to NRC as appropriat For those restraints, e.g. U clamps or anchors, that are hidden under insulation and were not inspected, the inspector stated that removal of the insulation is required by IEB 79-1 For all suspension system components that are without drawings, incorrectly installed or have bolt or rod sizes that deviate from design, an appropriate evaluation should be made within 30 days, to ensure seismic requirements have been me The inspector further stated that the responsibility for determin-ing whether or not the deviations are considered significant enough to be reportable to NRC within 2 days, is the responsibility of the design engineer If field personnel are authorized to perform the evaluation, criteria should be provided by the B-AA offic No items of noncompliance or deviations were identifie.
Observation of Work The inspector observed some of the ongoing measurement work per IEB 79-14 in the accessible area Discussions with the work groups indicated that the people were familiar with the procedure requirement Items such as cut structural members, valve and operator configurations, restraint locations, etc. were inspected and documente No items of noncompliance or deviations were identifie Exit Interview The inspector met with licensee representatives at the conclusion of the inspector on August 28, 197 The inspector summarized the scope and findings of the inspectio The licensee acknowledged the findings reported herei