IR 05000412/1981006
| ML20033A513 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 11/05/1981 |
| From: | Greenman E, Walton G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20033A508 | List: |
| References | |
| 50-412-81-06, 50-412-81-6, NUDOCS 8111250521 | |
| Download: ML20033A513 (6) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT Region I Report No. 50-412/81-06 Docket No. 50-412 Category B
License No. CPPR-105 Priority ~
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Licensee: Duquesne Light Company 435 Sixth Avenue Pittsburgh, PA 15219 Facility Name:
Beaver Valley Power Station, Unit 2 Inspection at:
Shippingport, PA Inspection conducted: August-3-7, 17-21 and September 30, 1981 Inspectors:
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G. Walton, Senior Resident Inspector date signed Approved by:
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u E. Greenmari, Chief, Reactor Projects date signed-Section No. 2A, Projects Branch No. 2 Inspection Summary:
Inspection on August 3-7, 17-21 and September 30, 1981 (Report No.
50-412/81-06).
Areas Inspected:
Routine, announced inspection by the Resident Inspector of work in progress, and facility familiarization including detailed tours of all construction activities, numerous discussions with licensee and contractor personnel and, review of selected construction procedures for pipe cleanness and installation.
The inspection involved 88 hours0.00102 days <br />0.0244 hours <br />1.455026e-4 weeks <br />3.3484e-5 months <br /> onsite by one resident inspector.
Results: Of the two areas inspected, one item of noncompliance was identified in one area - Failure to follow procedures for protection of electrical panels when removing welds (Paragraph 2(c)).
8111250521 811106 PDR ADOCK 05000412 O
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2-DETAILS 1.
Persons Contacted.
Duquesne Light Company R. Coupland, Director of Quality Control
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N. Crooks, Assistant Director of Quality Control
- C. R. Davis, Quality Assurance Supervisor
- D. W.'nenning, Assistant Director of Quality Control
- W..H. Glidden. Senior Quality Assurance Engineer
- K. A. Troyler, Engineer
- R. Washabaugh, Quality Assurance Manager Stone and Webster (S&W)
- S. T. Adams, Superini.endent of Construction C. R. Bishop, Resident Manager
- R. J. Faust, Structural Engineer
- J. J. Purcell, Site Engineer Schneider, Inc.
G. Timko, Site Quality Assurance Manager
- Present at 'xit meeting October 2, 1981.
2.
Site Tour Routine tours of the site were n.ade to observe the status of work and construction activities in progress. Work items were examined for obvious defects or noncompliance with regulatory requirements. Areas inspected and findings are described below.
a.
On August 5, 1981 in the Auxiliary Building at elevation 735',the inspector observed a wood platform erected and mounted on electrical cable trays (tray numbers 2RC-2110-R and 2TK-2110-R). The weight of the platform could not be determined, but it appeared that the platform weight plus the intended use of the platform to hold one or two craftsmen could exceed the design loadings specified in specifi-cation number 2BVPS-316 for cable trays. The inspector notified the licensee and the following corrective actions were taken by the licensee:
The platform work was stopped and engineering was notified for
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appropriate disposition.
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Change Notice 11-37 was issued to FCP-11 Appendix 1 which states:
"No equipment or materials shall be stored in or on installed cable tray, permanent plant equipment, small bore piping, instrumentation tubing or HVAC duct wor.
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Temporary or permanent non-electrical attachments'to electrical tray or conduit supports shall not be permitted unless approven by the Engineers.
If an approved attachment (i.e., temporary working platform), is to be used the contractor must notify the Supervisor of Electrical Inspectors in writing 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> in advance, to check that final acceptance and inspection is complete.
Sargent Quality Control must be notified in writing when temporary attachments are removed, to check for damage.
Temporary or permanent attachments shall not be permitted on cable
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tray, conduit, permanent plant equipment, or instrumentation tubing unless approved by the Engineers.
Climbing of cable tray sides will only be permitted for the purpose of cable pulling.
Standing on, walking on, or climbing on installed permanent plant equipment, small bore piping, or instrumentation tubing, shall not be permitted unless approved by the Engineers.
An exception is made during the installation, fit-up, pipe-up or inspection of equipment when climbing is permitted; however, great care must be taken to prevent damage."
The inspector had no further questions on this matter at this time.
This area will be examined further during subsequent inspections.
b.
While performing a walk-thru inspection-in the Auxiliary Building at elevation 725', the inspector noted a three inch weld neck flange, mark' number 2-CCP-336-6 which appeared to have an excessive rust condition on the inside surface.
It was released to construction
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for installation on August 6, 1981. The inspector questioned the
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contractar, Schneider, Inc., regarding the acceptability of this item ard the controls for release of piping and components to construc-tin i.
It was found that this item was released without a quality control inspection prior to release.
In accordence with FCP-201, paragraph 6.11.4, an inspection is only required " prior to installation".
The following actions were taken by the licensee to correct the apparent deficiency and prevent other piping from being installed without proper inspections.
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An in process inspection for cleanness was performed by Schneider
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Results:, Unacceptable I.D. of spool in a flaking, rusted condition along with tightly adhered granular contamination.
Also, a 3 inch weld neck flange attached to this spool exhibits pitting on the raised face, and two threaded tap holes on the hub are in a rusted condition. A nonconformance and disposition
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report (6407) was issued September 2, 1981 with the following disposition: Contractor shall remove and scrape orifice. flange.
on 2-CCP-336-6. Contractor shall purchase and install a new flange.
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Procedure IP-7.9, Cleanness of Piping, Tubing, and' Associated Components was revised October 1, 1981 to state:
Pipe and piping assemblies'shall be inspected prior to the initial release from the off-site storage area or prior to removal from the contractor fab shop, and this inspection shall be recorded on the Pre-installation Cleanness Inspection Report Form.
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Change Notice 201-3 to FCP-201, " Cleaning and Maintaining the Cleanness for Piping, Tubing and Associated Components," was issued October 1, 1981 which states:
Prior to the initial removal of material from the offsite storage area or removal from the Contractor Fabrication Shop, the Contractor shall notify SQC for a cleanness inspec'Jon. The material shall be checked to ensure that the internal cleanness level is in accordance with the procedural requirements for the cleanness level specified on the Engineering Flow Diagrams.
The inspector audited numerous other components and was satisifed
the deficiency was an isolated condition and a change in the inspection sequences had allowed this one item to bypass quality control cleanness inspection. The inspector had no further questions, c.
While performing a walk-thru inspection on August 6, 1981, in the Control Room at elevation 735',the inspector found craft personnel grinding off welds inside the vertical electrical control boards without adequate protection of the electrical components. The following conditions were found:
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A Significant Deficiency Report SDR-81-02 issued May 15, 1981 stated that structural deficiencies were found in the design of the Control Room Extension which required modifications.
Interior concrete beams supporting the floor of the Control Room at elevation 735' (among others) would be stressed beyond code allowable limits. The corrective actions require addition of steel columns beneath the floor at elevation 735'.
The steel columns would be jacked (loaded) to relieve some of the existing stresses.
Prior to jacking the beams, instructions
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were issued to remove the welds holding the vertical panels to i
the floor to relieve any stresses applied to the panels. The welds were located on the floor inside the electrical panels and the inspector observed craft personnel removing the welds with grinders. Grinding particles were apparent on electrical components inside the control panels. This item was brought to the attention of appropriate personnel and at 10:10 a.m. on August 6, 1981 the Stone and Webster Superintendent of Construc-tion issued a "Stop Work Order" on the grinding off of these welds.
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The inspector informed the licensee that.this item was a violation of 10CFR50 Appendix B Criterion V and Stone and Webster FCP-105, paragraph 5.1.2 which states " Panels will be protected by covering with visqueen, plywood or other tarps to control dust..."
Immediate corrective actions were taken by issuing a Stop Work Order, cleaning up any grinding particles, instructing workers on necessary controls, and providing adequate controls for the removal of the welds. After these items were accomplished the Stop Work Order was lifted by Stone and Webster.
No additional response to the item of noncompliance is required. Appropriate corrective actions were taken as required by 10CFR2.201.
(81-06-01).
3.
Purge Dam Material Used During Welding Based on information received through Region III a potential generic item regarding water soluble purge dam material could exist at nuclear facilities.
It was found that at another nuclear facility a particular water soluble purge dam material was not soluble in water after being subjected to heat (such as post-weld heat treating). The inspector reviewed the licensee's control for control of internal installation and removal of temporary baffles.
FCP-204 and CN-204-2 controls this activity by requiring that piping is identified with a " Temporary Internal Baffle Installed Tag" when the baffle is installed. The responsible Area-Superintendent shall ensure that baffles are removed after use and noted on the baffle control tag and for all Category I piping and components, removal of baffles or dams shall be verified by Duquesne' Light Quality Control inspectors.
The inspector was satisfied that adequate controls are being implemented to prevent baffles or dams from being left inside piping. The-inspector had no further questions regarding this matter at this time.
4.
Procedure Review The inspector selected two documents for detailed review:
Specification 2BVS65, Revision 4, titled:
Reactor Containment Liner
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and Mat Embedments
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Field construction procedure FCP 601.1, Welding Procedures The documents described above reflect the requirements described in tia facility SAR.
No items of noncompliance were identifie....
5.
Exit Interview The inspector met with licensee and contractor representatives (denoted in paragraph 1) on October 2, 1981.
The inspector summarized the scope and findings of the inspection as described in this report.
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