IR 05000281/1979040
| ML18130A501 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 06/29/1979 |
| From: | Danielson D, Erb C, Herdt A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML18130A500 | List: |
| References | |
| 50-281-79-40, NUDOCS 7908240284 | |
| Download: ML18130A501 (4) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION II
Report No. 50-281/79-40 Docket No. 50-281 License No. DPR-37 Licensee:
Virginia Electric and Power Company P. 0. Box 26666 Richmond, VA 23261 Facility Name:
Surry Power Station, Unit 2 Inspection At:
Surry Site near Williamsburg, Virginia Inspection Conducted:
Hay 21-25, 1979 e.
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Inspectors:
C.H. Erb
~*~/~~~C/1.L-H. H. Li~e'fmore r,
~,.,J,9 Approved 1!,1~* H.~}~e~ Chief r Engineering.- Su~port Section 2, RIIIr
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Inspection Summary Inspection on Hay 21-25, 1979 (Report No. 50-281/79-40)
Areas Inspected:
Observation of machining of weld prep for third generator shell and fit-up and welding level tap nozzle; review of weld and post weld heat treat procedures; observation of preheat and post heat activities. The inspection involved a total of 52 inspector-hours on site by two NRC Region III inspector Results:
No items of noncompliance or deviations were identified.
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Persons Contacted Licensee Personnel DETAILS
- J. L. Wilson, Superintendent Operations
- W. L. Stewart, Site Manager A. Leonard Parrish, III, Project Manager J. Jones, Construction Engineer -Welding W. L. Byrd, Welding Supervisor Chicago Bridge and Iron Company (CBI)
J. Edgar, QA Superintendent D. Lancaster, Supervisor, NDE Daniels Construction Company (Daniels)
R. Yuhasz, Quality Control-Welding
- Denotes those present at the exit intervie Functional or Program Areas Inspected Machining of Top Half of Generator Shell Westinghouse has made measurements of the mating bottom shell and established the inner diameter of the weld pre A scribe line has been drawn and the W equipment will mill the dimension to the scribe line-in two cuts. Excessive out of round condition could require weld build-up on a portion of the inside diamete The W equipment is electrically driven and special cutters are available so that the prep with its weld land can be mille The inspectors observed W activities at various stages of completio No items of noncompliance or deviations were identifie.
Tap for Water Level ETA-30016-P-l-V2A A hole was drilled in the top shell of all the generators to accomodate a 2-inch nozzle which will be connect~d to a narrow range water level indicato The inspector observed the fit up and root pass of this weld for the "C" generato The J prep
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extended into the base metal from the outside of the shell about 1.19".
The weld was made by the shielded metal arc process with magnetic particle test on the weld prep and every 1/2" of weld being performe Procedure HT-11 was used for the Magnetic Tes A preheat of 3S0°F was used with the preheating elements placed on the inside of the shel The welder was using electrode from a portable oven and was grinding each pas Used electrode stubs were being collected in a bucket for disposa An autographic record of preheat was being maintaine Four thermocouples were employed for the weld and a check on the recorder showed temperatures at the four points to be 390°-440° The welder's identification number was No. 2 No items of noncompliance or deviations were identifie.
Lower Shell Assembly for "C" Steam Generator A visual inspection of this generator shell was mad The assembly was located outside containment and adjacent to the loading platfor All openings and manways were sealed and protecte The normal nitrogen storage purge was disconnected as the assembly was considered to be in transi The licensee stated that any extensive delay in lifting the assembly into containment will necessitate that the purge be resume No items of noncompliance or deviations were identifie.
Feedwater Welds by Daniel ETA-40002-1V-2C Procedure 43-43-A-7 will be used to make the internal weld between the feedwater nozzle and the thermal sleev This weld utilizes an integral backing ring and Joins inconel to inconel with a filler material E-NiCrFe-A 350°F maximum interpass temperature is specifie The crossover pipe weld to the feedwater ring is an open butt weld with SA106, GrB, material welded to SA106, Gr The root will be made by the GTAW process using E70S-2 electrod The weld will be finished by the shielded metal arc process using E7018 electrode A completed weld in the main steam system was examined, which had just been stress relieved using the Cooperheat equipmen Procedure 40007-P-2-V2A was utilized which requires 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />
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- maximum at ll00°F-1200°F with controlled heat up and cooldown rates. All thermocouples must indicate 1100° minimum ~efore the bold time begin A check of the autographic re~ord for this PWHT indicated it had been accomplished in an acceptable manne No items of noncompliance or deviations were *identifie.
Feedwater Nozzle Welds ETA-30016 The finished welds made by CBI were inspecte The welds were ground and contoured in an acceptable manne The process sheet was signed off and indicated the following activitie Weld prep, both halves Fit up fixture Preheat equipment First 1/2" weld, 25%,
50\\, 75%
25% completion Backgouge inside Complete weld inside Complete weld outside Blend inside and out Radiograph Post weld Heat Treat Magnetic Test, procedure HT-11 Internal diameter nozzle Autographic recorder 350°-5oo°F HT, UT hot at 75%
Remove fit up fixture HT HT HT UT Procedure RT-9X Procedure HTIN, when girth weld is done No items of noncompliance or deviations were identifie Exit Interview The inspectors met with licensee representatives (denoted in the Persons Contacted paragraph) at the conclusion of the inspection on May 25, 197 The inspectors summarized the scope and findings of the inspectio.,...
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