IR 05000456/1981004
| ML19346A277 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 04/28/1981 |
| From: | Danielson D, Erb C, Schapker J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19346A275 | List: |
| References | |
| 50-456-81-04, 50-456-81-4, 50-457-81-04, 50-457-81-4, NUDOCS 8106050564 | |
| Download: ML19346A277 (8) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Reports No. 50-456/81-04; 50-457/81-04 Docket Nos. 50-456; 50-457 Licenses No. CPPR-132; CPPR-133 Licensee: Commonwealth Edise,n Company Post Office Box 767 Chicago, IL 60690 Facility Name:
Braidwood Station, Units 1 and 2 Inspection At:
Braidwood site, Braidwood, IL Inspection Conducted: April 3, 7, and 8, 1981 -
Inspectors: C E
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.[.Schaper M
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JW Mc9P!d7 Approved Dy:
D. H. Danielson, Chief Materials and Processes Section Inspection Summary Inspection on April 3, 7, and 8, 1981 (Reports No. 50-456/81-04; 50-457/81-04)
Areas Inspected: QC records for internals work, Units 1 and 2; documentation for containment penetration welding, Units 1 and 2; observed hardware and checked documentation for structural fabrication and installation, Units I and 2; observed welding and checked records for welding primary coolant pipe and other safety related pipe; reviewed PTL equipment, procedures and NDE personnel certifications; reviewed radiographs of field welds and observed magnetic particle examination of welds; previously identified inspection findings. The inspection involved a total of 35 inspector-hours onsite by two NRC inspectors.
Results: No items of noncompliance or deviations were identified.
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DETAILS Persons Contacted
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Commonwealth Edison Company (CECO)
- R. Cosaro, Site Superintendent
- T. R. Sommerfield, Site QA Superintendent
- M. A. Gorski, QA Engineer
- L. Tapella, QA Engineer D. M. Kapinus, QA Engineer S. Jaquez, QA Engineer D. Broun, Supervisor, QA-Electrical & Documentation B. Tanouye, Construction Engineer-Civil S. Hunsader, Supervisor QA-Mechanical & Structural Other Personnel
- L. E. Smetana, Site Manager, Pittsburgh Testing Lab (PTL)
L. Shoults, Site Manager, Westinghouse Electric (W)
R. Martens, Cable Engineer, Comstock C. Ullrich, Foreman Weld Inspection, Phillips Getschow Co. (PGCo)
C. Zavada, QC Manager, Napoleon Steel Contracting, Inc.
S. Bank, QA Engineer, Pittsburgh Testing Lab T. Frazier, Radiographer, Pittsburgh Testing Lab
- Denetes those present at the exit interview.
Licensee Action On Previous Inspection Findings (Closed) Unresolved Item (456/79-09-01): Two steam blowdown nozzles, two inch and one inch diameters on generator No. 1714, were damaged in shipment from Byron site to the Braidwood site. W has completed the repair which was done at the time seven openings were added to each of the Unit I steam generators. This repair was verified by reviewing the generator and supporting fabrication details.
(Closed) Noncompliance (456/80-12-01; 457/80-11-01): Action was taken by CECO to correct the problem of untaped electrical cables in storage and l
reported in a letter to the region dated December 4, 1980. A number of reels in :*orage were checked from different vendors and all were properly taped.
Functional or Program Areas Inspected See Sections I and 11.
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Section I-Prepared By:
C. M. Erb Reviewed Bv:
D. H. Danielson, Chief Materials and Processes Section-1.
Q.C. Records for Internals Work - Units'I and 2 The procedure'for the lower radial core support pad machining and clevis insert cperation was examined. This' work was' supervised.by a W field engineer. Other services were performed by NSD and QA-Pensacola.
This work was performed to W Specification 616A407, Supplement 7.
No items of noncompliance or deviations were. identified.
2.
. elding and NDE for Electrical and Process Pipe Penetrations - Units 1 and 2 '
W a.
Phillips Getschow Company (PGCo) are welding the subject items, which are fabricated to the requirements of ASME Section III,'1974 Edition, Summer or Winter 1975 Addenda, Class MC.
The welding and NDE records for the following three electrical penetrations were examined.
Ident.
Size Process Joint NDE 1-C-E-21 18 x.437 GTAW, SMAW Open-butt RT-1 Revi-sion 13 by PTL 1-C-E-24 12 x.375 GTAW, SMAW Open butt RT-1 Revi-sion 13 by PTL 1-C-E-23R1 12 x.406 GTAW, SMAW Open butt RT-1 Revi-sion 13 by PTL These welds i' 31ved a butt weld between a pipe and a weld neck-flange. Visuai examination was performed to procedure VT-QAP-2, Revision IA.
The RT film on the above welds showed acceptable quality, b.
The flued head penetrations are those used when a process pipe carrying water or steam exits through the containment wall. Weld No. IPC-32-FW1 is a dissimilar metal weld involving Specifica-tion SA-333 Gr6 carbon steel pipe to Specification SA-240 Gr304 stainless steel plate. This is a fuel poc1 cooling and clear. up pipe and there are several such dissimilar metal welds..These-welds are made using a backing ring and a filler of type 309 stainless steel electrode. Since these welds are part of MC containment and are full penetration welds a volumetric inspec-tion must be made. Radiography is not a practical method of inspection due to configuration of the joint, so ultrasonic-3-
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examination must be utilized. Any mock-up joint for calibration of UT should include the backing ring, since the backing rings cannot be removed'on the production welds.
Process sheets on weld No. 1 PC-34-FW1 were examined. This weld is a similar design to the fuel peol penetration using a backing ring, but the base materials are both carbon steel. The weld procedure used fa 1A-MA-11-NRS and inspection is visual to Procedure VT-QAP-2, Revision IA.
PTL performs a magnetic particle examination to QC MT-1, Revision 9 and an ultrasonic examination (UT) to QC-UT-1, Revision 7.
The backing ring is not removed, but the UT will be facilitated by the similar base materials.
No items of noncompliance or deviations were identified.
3.
Observation of Hardware and Documentation for Structural Steel - Units 1 and 2 Several welded and bolted structural connections in Units 1 and 2 were observed and the Q.C. documentation checked. The welding was performed to the requirements of AWS D1.1-76 and the bolted joints to AISC Handbook 1973 Edition. Welds No. 1447 on column R35 and No. 1448 on column R36 at the 419 foot level were checked.
In Unit 2 R25 and R24 columns were checked where welded. The Q.C. records produced by American Bridge and Napoleon Steel Contracting were acceptable for the welding.
Napoleon Steel Contracting who are presently doing work, use a Skidmore-Wilhelm to check the torque-tension relationship for bolting and this equipment had been properly calibrated. The results of checking tension in joints with both Specification A-325 and Specification A-490 bolts were examined and found to meet S&L and AISC specifications.
In cases where full penetration welds are made using a backing strip, UT to Procedure UT-2, Revision 4 is performed by PTL. Where magnetic particle examination is required, PTL performs it to Procedure QC MT-1, Revision 11.
No items of noncompliance or deviations were identified.
4.
Containment Post Tensioning - Unit 1 i
l Of the 120 tendons to be installed in the dome, 100 have been placed.
At the time of the inspection work had stopped because, during the stressing operation, a bushing had been stripped of its threads.
Further investigation showed that the bushings on hand were dimensfor.-
ally deficient. All were returned to INRYC0 for investigation and replacement. This item was reported in a 50.55(e) report.
No items of noncompliance or deviations were identified.
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A Section II-Prepared By:
J. Schapker Reviewed By:
D. H. Danielson, Chief Materials and Processes Section 1.'
Review of Nondestructive Examination Procedures (NDE)
The inspector reviewed the following NDE procedures utilized by i
Pittsburgh Testing Laboratory (PTL), the cognizant NDE contractor for ASME Section III, 1974 Edition with Summer 1975 Addenda.
a.
Procedure No. QC-PQ-1-UDR, Revision 17 dated July 18, 1980,
" Qualification and Certification of NDE technicians" specifies minimum education, training and experience to certify NDE per-sonnel in their respective categories, and meets the requirements specified in American Society for Nondestructive Testing (ASNT)
Recommended Practice No. SNT-TC-1A (1975 edition).
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b.
Procedure No. Q.C. MT-1, Revision 11 dated July 28, 1980,
" Magnetic Particle Examination."
c.
Procedure No. QC-PT-1, Revisica 14 dated July 28, 1980,
" Liquid Penetrant Testing."
d.
Procedure No. QC-RT-1, Revision 13 dated October 24, 1980,
" Radiographic Examination."
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e.
Procedure No. QC-UT-1, Revision 12 dated July 18, 1980.
As a result of the review of the above procedures, the inspector informed CECO and PTL representatives that the following should be i
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clarified:
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Procedure No. QC-PT-1, Revision 14, " Liquid Penetrant Testing",
Paragraph 9.3.3 stated in part that: Dwell time for the penetrant dye shall be "20 minutes (or as recommended by the manufacturer)."
To avoid confusion on this issue it is suggested that a definite elapsed time be specified in the written procedure which meets the manufacturer's recommended dwell time.
(Reference ASME Section V Article 6, Paragraph T643) i.e. Dwell time for each manufacturer and type be specified so that the NDE technician is assured decision as to manufacturer's recommendations is correct.
(Reference ASME l
Section V, Article 6, Paragraph T-681(c)).
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No items of noncompliance or deviations were identified.
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I 2.
Review of Nondestructive Examination Personnel Certifications:
The inspector reviewed certifications of the following PTL personnel.
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Name Method Level Bill.U. Adachi RT-UT-MT-PT III Charles J. Rufo RT-UT-MT-PT II Lawrence E. Smetana RT-UT-MT-PT II Paul W. Gabriet RT-UT-MT-PT'
II Tony Frazier
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RT-MT-PT II Lawsence S. De11'Aguila MT II Carroll L. Tardy RT'
I Carroll L. Tardy lPT II No itent of noncompliance or deviations were identified.
3.
Observation of PTL's NDE Laboratory Activities The inspector toured the PTL facilities escorted by PTL's Level II.
radiographer. The following are the inspector's findings:
a.
Radiography (RT)
The Lab has four IR-192 sources stored in camera pig inside
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a locked lead lined box in the laboratory storage room which also is locked: only authorized personnel have access.
PTL does not have a Co-60 source or X-ray machine onsite.
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Film is processed by hand; however, PTL has requested purchase
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of an automatic processor for the near future.
The lab uses Kodak industrial radiographic film, Types 1 and'2.
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Film was stored in lab storage cabinets. No outdated film was
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observed.
Exposed film is stored in environmentally, and access controlled
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vault by the licensee.
Film cassettes were in acceptable condition, letter "B" attached
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f.7r backscatter exposure detection.
Lead screens observed in cassettes were in acceptable condition.
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Flourescent screens are not used, nor are there any onsite.
Lead numbers and flashers are used for identification of radio-
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graphs.
Only ASME Section V, SE 142 Figure 1 (ASTM) type penetrameters.
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are used. Certifications were available and penetrameters were -
in good condition.
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Densitometers are Macbeth Model 301 and X-Rite Digital Model 301.
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Density strip step wedge with tracibility to NBS was available and utilized for calibration of densitometers.
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High intensity viewers are utilized and were in good condition.
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Decay curve for gamma ray sources is posted in the lab.
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Survey meters are four Radector Model 500 and are calibrated
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every three months.
Pocket dosimeters are utilized and recorded daily by the
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radiographers.
Film badges are processed and recorded monthly.
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The following radiographs were reviewed by the inspector:
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System Weld No.
Thickness Diameter Date RT
- Essential SX-63-FW2-1
.375" 16" 4/8/81 Sevice Water Safety In-ISI-1-FW3A 1.0" 10" 4/8/81 ja: tion
- Main Steen MS-6-4-FW39 1.688" 41.25" 4/8/81
- Reactor
2.320" 27.5 4/7/81
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Coolant Loop 1 Welder (516)IA-MA-88 RIO
.432 6"
4/7/81 Qualification Welder (660)IA-MA-88 R10
.432 6"
4/7/81-Qualification
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- Rejected by PTL in compliance with referenced code.
- Retake of view 78-88 only.
The inspector requested review of gamma source NRC license. The license was not available onsite, but a copy is being forwarded from PTL's home office. The expiration date was August 31, 1979, but was_ extended on July 30, 1979 by the NRC; the extension had no expiration da;.e.
This item is considered unresolved (456/81-04-01; 457/81-04-01) pending verification by the NRC inspector.
b.
Ultrasonic Examination (UT)
PTL has a Krautkramer USM-2.on site in good condition, in-
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l cluding various calibration blockr Calibration to ASME it I
performed every three months, AWS every two months.
IIW block type 1 with certifications and in good condition
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I was verified.
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e The lab has UT transducers in varioas sizes, MHZ and angles
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in good condition.
Certifications for halogen and sulfur content of couplant
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were verified.
c.
PTL uses Spotcheck solvent removable type liquid penetrant
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materials.
P.T. materials are stored in the lab, certifications for
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halogen and sulfur content were varified.
d.
Magnetic Particle Examination (MT)
PTL has three parker contour probes model D8200 in good
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condition with current calibration stickers attached.
Magnaflux red, fine, high permeability, low retentivity
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magnetic particles are used.
The inspector observed the magnetic particle examination of
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the following:
System Weld Location Come nent cooling CC27W4 Elevation'426 - P-1 Aux. Feedwater AF7-FW7 Elevation 364 - P-10 Fire protection system FP-37-FW2HB Elevation 420 - P-12 No items of noncompliance or deviations were identified.
Unresolvqd Items Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items, items of noncompli-ance, or deviations. Unresolved items disclosed during the inspection are discussed in Section II, Paragraph 3.a.
(456/81-04-01; 457/81-04-01)
Exit Interview The inspectors met with licensee representatives (denoted under Persons Contacted) at the conclusion of the inspection April 8, 1981. The inspector smnmarized the purpose and findings of the inspection, which were acknow-ledged by the licensee.
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