IR 05000361/1981014
| ML20010E087 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/12/1981 |
| From: | Bishop T, Eckhardt J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML20010E086 | List: |
| References | |
| 50-361-81-14, 50-362-81-03, 50-362-81-3, NUDOCS 8109030058 | |
| Download: ML20010E087 (5) | |
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U. S. Nt' CLEAR REGUL\\ TORY COMMISSICN OFFICE OF INSPECTION AND ENFORCEMENT
REGION V
50-3r1/81-14 Report No.
50-362/81-03 Docket No.
cn_76( cn 3gg License No.
CPPR-97. og Safeguards Group Licensee:
Sou thern California Edison Company 2244 Walnut Grove Avenue Rosemead, California 91770 San Onofre Units 2 and 3 Facility Na=e:
Construction Site, San Diego County, California Inspection at:
Inspection condveted:
June 16-19, 1981 Inspectors:
/[
F//p/A'/
. H. Eckhardt, Reactor Inspector
' D/te Signed Date Signed Date Signed Approved By: (M f//
8//r/f/
g.W. Bishop, Chief,ReactorProjectsSection1
' Date Signed S u::=ary :
Inspection on June 15-19,1981 (Report Nos. 50--361/31-14 and 50-362/81-03)
Areas Inspected: Routine, unannounced inspection by regional based inspector of construction activities involving licensee action on previous inspection findings, 50.55(e) reports, and IE Bulletins; Unit 2 electrical cable installation; and Unit 2 pipe spool and valve quality records. The inspection involved 25 onsite inspection hours by one NRC inspector.
Resul ts:
No items of noncompliance or deviations were identified.
i RV Form 219 (2)
8109030058 810814 PDR ADOCK 05000361 PDR O
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DETAILS 1.
Individuals Contacted a.
Southern California Edison Company
- D. E. Nunn, Manager, Quality Assurance
- P. A. Croy, Project QA Supervisor
- J. J. Wambold, Construction fianager
- T. O. Gray, Construction QA Supervisor
- D. B. Schone, Si te Project Engineer
- V. A. Gow, QA Engineer
- R. T. Cantrell, QA Engineer
- L. A. Pfandler, QA Engineer Trainee
- C. R. Hover, Nuclear Engineering Site Representative b.
Bechtel Power Corporation (Bechtel)
- L. W. Hurst, Project QA Manager
- J. W. Sheppard, Project QA Supervisor
- W. D. Nichols, Project Field Engineer
- R. H. Medina, QA Engineer
- Denotes those attending exit interview.
2.
Licensee Action on Previous Inspection Findings The inspector examined the action taken by the licensee on the following items.
a.
(Closed) Followup Item (50-361/80-06/03) Acceptance criteria of concrete anchor bolts installed at an angle.
The licensee did not have an acceptance criteria for concrete anchor bolts installed at an angle not perpendicular to the surface of the anchor plate.
Construction specification CS-C8 was revised (Rev. 8) on June 26, 1980 to include a criteria of 10 degrees from perpendicular as the limit for acceptabie installation, with higher angular deviations subject to approval by the Project Engineer considering actual loading conditions.
This item is closed.
b.
(Closed) Followup Item (50-362/81-01/01) Orientation of CVCS letdown backpressure regulating valves.
Two letdown backpressure regulating valves (one in each unit)
had been installed in the reverse direction with respect to flow.
This installation error resulted from mechanically affixed flow arrows not corresponding to the flou direction indicated on the vendor print.
The valves were removed and reinstalled in the correct orientation.
Combustion Engineering and the licensee evaluated the consequences if orientation of the valves would have
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under 50.55(e) requirenents and is not generic.
The inspector reviewed this evaluation and agrees with the licensee.
This item is closed.
3.
Licensee Action on 50.55(e) Items and IE Bulletins The inspector examined the action taken by the licensee on the following 50.55(e) items and IE Bulletin.
a.
Undersized Welds fer Socket Weld Connections On October 7,1980, the licensee notified the Region V office of a 50.55(e) item concerning undersized welds for socket weld connections.
The licensee submitted an interim report flovember 7,1980 and a final report December 16, 1980.
The inspector examined the licensee's corrective action which included a 100 per cent reinspection of socket welds and reworking where necessary. This item is closed.
b.
Fuel Transfer Tube Design Deficiency On December 26, 1980, the licensee notified the Region V office of a 50.55(e) item concerning a design deficiency in the fuel transfer tubes.
The deficiency was discovered during a design review of the fuel transfer tube in preparation for the Unit 2 containment structural integrity / integrated leak rate test.
The design review indicated that the stress level in the fuel transfer tube shell at the attachment of the stiffener ring to the containment pressure boundary bellows interface was in excess of tne specified code allowables. The deficiency was corrected by the addition of longitudinal stiffener plates between
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the interface stiffener ring ari existing adjacent stiffener rings to reduce the stress concentration to within the specified code allowables.
The corrective action has been implemented in the Unit 2 and 3 fuel transfer tube assemblies and passed the containment structural integrity test for Unit 2.
This item is closed.
c.
Dewatering Well Cavities On May 6,1977 the licensee discovered cavities associated with dewatering wells for Units 2 and 3.
The licensee submitted 50.55(e)
reports that have been reviewed and evaluated by the f1RC i
headquarters staff. The cavities have subsequently been grout filled. The flRC headquarters staff has made an extensive evaluation of this condition and the grouting repair, and considers the present condition acceptable.
This is discussed in detail in fiUREG-0712, Safety Evaluation Report, Section 2.5.4, February,1981.
This item is closed.
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d.
IE Bulletin 79-13 - Cracks in Feedwater Piping IE Bulletin 79-13 required radiographic examination of feedwater nozzle-to-pipe welds on the steam generators.
The examinations were performed on the Unit 2 welds on May 13, 1981 and no indications were found. The inspector reviewed the test reports for the Unit 2 welds. Upon completion of hot functional testing for Unit 3, the Bulletin work will be performed on that Unit.
The action required by the Bulletin is considered complete for Unit 2.
4.
Piping and Valves - Quali'y Records Review - Unit 2 Quality records including material receiving reports, statement of confonnance, chemical and physical properties, NDE reports, and welding records were examined for the following Unit 2 pipe spools and valves.
Pipe Spools
. 2RC-015-001 12" pressurizer surge line
. 2RC-015-005 12" pressurizer surge line
. 2RC-013-001 3"
pressurizer spray line
. 2RC-013-003 3"
pressurizer spray line
. 2RC-061-OlB 2"
chemical and volume control charging line
. 2RC-061-00F 2"
chemical and volume control charging line
. S2-1201-ML-001 42" hot leg for SG No.1
. S2-1201-ML-010 30" cold leg (RCP to RV) 2B for SG No. 1
. 251-046-008 12" SI to cold leg 2B from low pressure header Valves
. 2PV-0100B 3"
spray control valve
. S2-1204-MU-033 12" check valve
. S2-1201-MU-020 2"
check valve The records were readily rt
'!vable.
No deviations or items of noncompliance were identitled.
5.
Electrical Cables - Unit 2 Electrical cables and raceways installed in Unit 2 were examined to ascertain compliance with FSAR commitments, construction specification CS-E6, and drawing 39402 " Conduit Physical Separation Guide".
Particular areas inspected were the cable spreading room at 9 feet elevation, cable riser area below the control room, containment at 45 feet elevation, containment penetration area at 63 feet elevation, and control building at 70 feet clevation.
Attribuces examined included cable cleanliness and protection, tray edge protectors, tray fill, fire barriers, raceway identification, and separation.
I During the inspection, differences of opinion arose regarding particular separation requirements outlined in drawing 39402 and possible inconsistencies between the drawing and FSAR commitments.
The differences were resolved during conference telephone conversations with the licensee and Bechtel personnel on June 23, 1981 and July 15, 1981.
No deviations or items of noncompliance were identifie _ _
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.c 6.
Management laterview The inspector met with licensee representatives (denoted in paragraph 1)
on June 19, 1981.
The scope of the inspection and the inspector's findings, as noted in this report, were discussed.
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