IR 05000456/1981010
| ML20031H200 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 10/09/1981 |
| From: | Danielson D, Erb C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20031H182 | List: |
| References | |
| 50-456-81-10, 50-457-81-10, NUDOCS 8110270248 | |
| Download: ML20031H200 (4) | |
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U.S. NUCLEAR REGULATORY COMMISSION
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OFFICE OF INSPECTION AND ENFORCEMEh"r REGI0F III Reports No. 50-456/81-10; 50-457/81-10 Docket Nos. 50-456; 50-457 Licenses No. CPPR-132; CPPR-133 Licensee: Commonwealth Edison Company P. O. Box 767 Chicago, IL 60690 Facility Name: Braidwood Station, Units 1 and 2 Inspection At: Braidwood Site, Braidwood, IL Inspection Conducted: September 1-3, 1981 f,}l.hr~
b d,/N/
n Inspectors:
C. M. Erb Wh
Approved By:
D. H. Danielson, Chief
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Materials and Processes Section
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Inspection Summary Inspection on September 1-3, 1981 (Reports No. 50-456/01-10; 50-457/81-10)
Areas Inspected: Documentation and installed structural steel in Units 1 and 2; welding in electrical and process pipe penetrations in Units 1 a.nd 2; welding and QC records for safety related piping in Unit 1.
This in-spection involved a total of 19 onsite inspector-hours by one NRC inspector.
Results: Of the areas inspected, one apparent violation was identified.
(Fail':re to install structural steel bolted connections to specification requirements - Paragraph 1.b.)
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8110270248 81101405000456 PDR ADOCK PDR O
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DETAILS Persons Contacted Commonwealth Edison Company (CECO)
- R. Cosaro, Project Superintendent
- T. R. Sommerfield, Site Superintendent, Quality Assurance
- J. T. Mervin, Project Construction Depertment
- S. Hunsader, Superviser Quality Assurance
- B. Tanouye, Project-Construction - Civil
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- W. Burns, Quality Assurance
- C, Gray, Project Construction W. Carlson, Project Construction M. Gorski, Quality Assurance Engineer i
Other Personnel
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A. Rubino, Manager Quality Control, Phillips Getschow Company V. Anderson, Quality Control, Phillips Getschow Company C. Zavada, Manager Quality Control, Napoleon Steel Contractors, Inc.
S. Forbes, Assistant Manager, Quality Assurance T. Frazier, Supervisor, Pittsburg Testing Lab (PTL)
- Denotes those attending the exit interview.
Functional or Program Areas Inspected 1.
Structural Steel Documentation and Observation of Installation Units 1 and 2 i
a.
Two bolted joints in columns were observed inside containment in Unit 1.
These splice joints were made by Napoleon and inspection
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performed by PTL. These joints were at the 404 foot level and were identified as columns A-271R37 and A-279R38. Each splice joint utilized 66 ASTM A-325 bolts 7/8 inch in diameter and there were two horizonal joints in the same area with six bolts and four
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bolts of the same size. These joints were made to the requirements l
of S&L Specification 2722, Form 1705-R. The tightening and inspec-l tion is by the turn of the nut method and agrees with the AISC Code.
A check for torque of 10% or two minimum is required on each bolt cluster. The splice joint above contained 66 bolts and seven were checked to meet the specification.
In one of the horizontal joints in the area with two bolts, both bolts were checked to muet the minimum requirement. The Skidmore-Wilhelm Tester was calibrated against an NBS Standard No. 213.09/216746. The former requirement of calibration every two years by PTL will be changed by Napoleon to a yearly calibration. The inspection report for A-271R37 was acceptable, but the' inspection report by PTL for A-279R38 had not been receis O by Napoleon.
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Several bolted connections outside' containment at-the 376. foot j
elevation were observed 4: Units 1 and 2.
These connections were:
made by the Americer *;idge~ Division to S&L' Specification 2735,-
l Form 1700-T. The bolts were 3/4 inch diameter, ASTM A-307 and
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were tiahtened to' hand tight. Welding was performed to AWS D1.1 and ott requirements may be found in:the AISC Code.. American Bridge )Ivision procedures were examined and found to be acceptable, and appraved by S&L.
In Unit 1 the following examples of noncompilance with S&L Form
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1700-T and ABD Procedure No. 5, Revision 1 were notad:
Beam No.
Size Problem 406B1 16" Nut not tightened, bent bolts 1002B1 14" Torch cut hole in lower flange 1002B3 14" Bent bolts'
For Unit 2 the following examples of. noncompliance with S&L Form
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i 1700-T and ABD Procedure No.5, Revision 1 were noted:
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' Beam No.
Size Problem
'4006B1 16"
-Bolts' bent, loose nut
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i A42B32 14" Bolts bent, lack of full bearing A606B1 16" Bolts bent,. lack of full bearing 1 This is an item of noncompliance identified in Appendix A.
(456-81-10-01; 457/81-10-01)
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Welding of Safety Related Piping Several welds from various systems in Unit I were inspected and the welding histories checked out to be acceptable as-follows:
System Weld No.
Class Weld Procedure Size CS CS-6,FW8
IA-MA-88RW10 10"x.365" CS CS-6,FW9
IA-MA-88RW10 10"x.365" CS CS-6,FW10
IA-MA-88RW10 10"x.365" CV CV-39,FW9
IA-MA-88RW10 3"::.438" CV CV-39,FW10
IA-MA-89RW10 3"x.438" SI SI-6,FW4
IA-MA-88RW10 8"x.906" SI SI-6,FW5
IA-MA-88RW10 8"x.906" SI SI-8,FW3
IA-MA-88RW10.
10"x1.00" SX SX-33,FW2
1A-MA-11-NRW8 16"x.375" SX.
SX-35,FW2
1A-MA-11-NRW8 16"x.375" All the above welds were stainless stee? except the last two and were given a radiographic inspection. Repaira were made and properly indi-cated for. Weld No. SI-8, FW3. All welds were made to the requirements of ASME Section III, 1974 Edition, Summer 1975' Addenda.
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Documentation Electrical and process Pipe Penetrations Units 1 and 2 Electrical penetrations consist of a pipe welded to a weld neck fitting.
.These welds were open butt and made to two procedures, IA-11-0, Revision 2, for the root passes and MA-11-05, Revision 5, for the completion of the weld. These welds are made to ASME Section III, 1974 Edition, Summer 1975 Addenda. Radiography is performed by PTL to Procedure No. QC-RT-1R13.
Unit 1 Weld CE-2 consists of SA 333, Grade 6, material welded to SA 105 material.
The following documentation was checked:
Unit 1 CE-2 18"x150 lb. fitting Unit 2 CE-3 and CE-4 12"x150 lb. fitting Unit 2 CE-8 and CE-9 12"x150 lb. fitting Documentation for several process pipe penetrations was examined and found to be acceptable for Unit I and Unit 2.
No.
Size Materials Comments IPC-69 16"x.843 C.S. to C.S.
Backing Ring used
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2PC-56 10 3/4x.365 C.S. to C.S.
2PC-44 10 3/4x.365 S.S. to C.S.
dissimilar metal weld 2PC-75 24"x.687 C.S. to C.S.
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No itemt of noncompliance or deviations were identified.
Rxit Interview the inspector mei. with licensee representatives (oenoted in Persons Contacted, Paragraph) on L,.tember 3,1981. The inspector st.mmarized the purpose and findings of the inspection, which were acknowledged by tLa licensee.
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