IR 05000456/1980006
| ML19343A329 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 07/24/1980 |
| From: | Hayes D, Naidu K, Schapker J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19343A326 | List: |
| References | |
| 50-456-80-06, 50-456-80-6, 50-457-80-06, 50-457-80-6, NUDOCS 8009170221 | |
| Download: ML19343A329 (5) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
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Reports No. 50-456/80-06; 50-457/80-06 Docket Nos. 50-456; 50-457 Licenses No. CPPR-132; CPPR-133 Licensee: Commonwealth Edison Cor:pany P. O. Box 767 Chicago, IL 60690 Facility Name: Braidwood Nuclear Power Station, Units 1 and 2 Inspection At: Braidwood Site, Braidwood, IL Inspection Conducted: July 9, 10, 1980
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7/Ey[f0 Inspectors:
K. R. Ndidu m
. $c apke 7/M[h y
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Approved By:
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V PD Engineering S; ;a z rt Section 1
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Inspection Summary Inspection on July 9-10, 1980 (Reports No. 50-456/80-06; 50-457/80-06)
Areas Inspected: Reviewed action taken on previous inspection findings, electrical contractor's procedures, observation of electrical hanger in-stallation activities, and storage of electrical equipment. The inspection involved 28. inspection-hours on site by two NRC inspectors.
Results: No items of noncompliance were identified in the areas inspected.
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i DETAILS Persons Contacted
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Commonwealth Edison Company (CECO)
- D. Brown,' Quality Assurance Engineer, Electrical C. Gray, Civil Supervisor M. Gorski, Quality Assurance Engineer J. Merwin, Mechanical Supervisor
- C. Mennecke, Electrical Supervisor
- T. Sommerfield, Quality Assurance Supervisor L.K. Constock & Company (LKC)
- R. Brown, Quality Assurance / Quality Control Supervisor
- L. Facchina, Project Manager R. Yanketis, Quality Control Welding Inspector T. Crate, Foreman, Auxiliary Building The inspectors also contacted other contractor and licensee personnel during the course of the inspection.
- Denotes those present at the exit meeting.
Licensee Action on Previous Inspection Findings
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(0 pen) Unresolved Item (456/80-04-01; 457/80-04-01):
It was previously reported that (1) the inspection status of various installed equipment could not be established, (2) inspection checklists were to be revised, (3) a NCR would be generated to document nonconforming conditions. During this inspec-tion, it was determined that the inspection status was not complete, the inspection checklists were in the review process, and that the corrective action recommended on Inspection Correction reports 417 and 418 were not complete.
Functional or Program Areas Inspected 1.
Review of QA Implementing Procedures, Units 1 and 2 The inspectors reviewed the following implementing procedures utilized by L.K. Comstock Company (LKC), the cognizant electrical contractor:
a.
Procedure 4.10.2 titled " Receiving and Storage" is used for receipt inspections. CECO generates a Material Receiving Report (MRR) for a given consignment and specifies the documentation which is to accompany the consignment.
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The above procedure includes monthly surveillances of stored equipment. CECO stated that currently their Production Depart-ment continues to perform surveillances on stored equipment.
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c.
Procedure 4.3.13 is utilized for equipment installation.
(1) Welding Procedure 4.3.3 specifies the welding requirements; welds are inspected to procedure 4.8.3.
(2) -Concrete anchors are to be installed to procedure 4.3.6.
d.
Qualification / classification and Training of QA/QC personnel are outlined in procedure 4.1.3.
e.
The requirements for installing conduit and cable pan hangers and auxiliary steel are outlined in procedure 4.3.12.
.f.
Safety related cable pan installation is performed to procedure 4.3.5.
g.
Drawing and specification documents are controlled utilizing procedure 4.2.1.
As a result of the review of the above procedures, the inspectors informed the CECO and LKC representatives that the following should be clarified:
h.
Procedure 4.3.3 does not stipulate that only qualified welders will be used for welding. Furthermore, the procedure does not require the welders to identify the weld with a distinguishing mark.
i.
Although weld inspection procedure 4.8.3 limits the undercut to 1/32",
the weld procedure 4.3.3 does not specify this acceptance criteria.
j.
In weld inspection procedure 4.8.3, the qualification level for the performance of the inspectors was not indicated.
The CECO and LKC representatives stated that the above details will be incorporated in revisions to the procedures. Pending review of the revised procedures, this matter is considered unresolved (456/80-06-01; 457/80-06-01).
2.
Observation of Stored Electrical Equipment Units 1 and 2 The inspector accompanied by CECO and LKC representatives observed the storage of the following equipment and components:
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I a.
Electrical Cables-The ends of the cables on many reels stored outdoors in the cable reel yard were not covered to prevent moisture absorption. Review of the monthly surveillance reports indicated that this unacceptable condition had not been identified; the surveillance checklists required verification whether the cable reels were on dunnage.
The inspector stated that the checklist did not specify applicable requirements. LKC agreed to revise the surveillance requirements; two Inspection Correction Reports (ICR), 419 and 420, were generated to cap the cables which were exposed and to put one cable reel back on dunnage. Pending review of a revised storage surveillance checklist, and corrective action taken, this matter is considered unresolved (456/80-06-02; 457/80-06-02).
b.
Electrical Cable Tray The contractor was in the process of re-arranging the cable pans.
Isolated instances where the welds on the cable pans were deteri-orating due to outdoor storage were observed. The CECO and LKC representatives agreed with the NRC inspector that these unaccept-able conditions should be detected during storage surveillances and touched up with zine rich paint to arrest deteriora, tion.
Pending review of an acceptable surveillance checklist and corrective action taken, this matter is considered unresolved (456/80-06-03; 457/80-06-03).
c.
Electrical Penetrations, Unit 1 The electrical penetrations supplied by Conax are stored in two areas; some of them in the spent fuel pool and the rest indoors in a warehouse. The pe~netrations are being stored in crates; a peep-hole in the crate enables one to read the pressure on the pressure indicator fitted to the penetration. The pressures in all the penetrations observed were above 15 psi; this pressure is in accordance with Conax's instruction book IPS-366 paragraph 11.3.1.
d.
Etergency Diesel Generators The Emergency Diesel Generators (EDG) 1A and 1B for Unit 1 have been moved into the auxiliary building but have not been set in place. The electrical leads in EDG 1B were damaged during shipment; the licensee is expecting the manufacturer to inspect the damage and recommend correct.ive action. The inspectors observed the EDG for Unit 2 being unloaded in preparation to be moved into the auxiliary building, and determined that the manufacturer's recom-mendations were being followed.
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I e.
Main Control Board Panels During a previous inspection, the NRC inspector questioned some of the welds inside the main control board panels. The shop drawings and other information were not readily available at that time. The licensee stated that the welds were inspected and that a Nonconformance Report 235 was generated to document unacceptable welds. Pending review of corrective action taken, this item is considered unresolved (456/80-0604; 457/80-06-04).
3.
Observation of Electrical Cable Tray Hangers a.
The inspectors observed the following hangers installed at eleva-tion 439' in the auxiliary building:
TH2, CCH, H059, H96. H95, H131, CC21, OH135 and H55. The installation met the requirements specified in the following drawings:
(1) 3361A titled " Conduit Supports Auxuliary Building Plan" (2) 3361C01 Conduit Support Schedule (3) 3393H Conduit support supplementary steel types and details (4) 3393C Typical details supplementary attachment b.
The inspectors observed the welding activities in progress for 3 more hangers and later verified that the following aspects were acceptable:
(1) Weldrod Type E7018 was specified and used; weldrods were being stored in portable heated conL:iners.
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(2) The welds appeared to be acceptable.
(3) Review of the qualification of the welders who were performing welding indicates that the welders were qualified.
No items of noncompliance were identified.
Unresolved Items Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items, items of noncompliance or deviations. Unresolved items identified during this inspection are discussed in paragraphs lj, 2a, 2b, and 2e.
Exit Interview The inspector met with the licensee representatives (denoted in the Persons Contacted paragraph) at the conclusion of the inspection and outlined the scope of the inspection along with a summarization of the results.
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