ML19329A626
| ML19329A626 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/30/1972 |
| From: | Peltier I US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001070641 | |
| Download: ML19329A626 (4) | |
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MAY.) 0 W7.
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Docket No. 50-259 E
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R. C. DeYouts, Assistant Director for Pressurised Vater Reactors, deleestsiased By
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A. Schwencer, Chief, Pressurized *=*ater Resetors Branch % sf wLdeenJsg ik i
lEETING WITH DUKI POWER CatTANY Mm 3A3CDCE RfD 'IILCOI CO:!CERNING REVIE*1 OF Tli! OCONEE UNIT 1 REACTOR YESSOL PTTEP.NALS TASICN. Alm REPAIR "AY 24, 1972 I
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Enclosed is a sususary of the meeting held on May 24, 1772 with Duke Power g
Company and Bebcock and Wileon. An seenda and attendance list are also
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O d JI " sned by Irvin31. Pelticx; _
t I. A. Peltier, Project Leader Pressurized Water Reactors Branch No. 4
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Directosata of Licensing l
Enclosures:
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1.
Ilesting Summary l
2.
Agenda i
3.
Attendance List cc w/encis:
A. Giambusso, L R. S. Boyd, L l
D. J. Skovholt, L i
- 3. R. Denton, L l
R. Tedesco, L.
j D. Knuth, L e
CS Branch Chiefs I
PVR Branch Chiefs j
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A. Pressesky. RUP FWKaras, L M. W. Liberkin, ACES W. R. Stratten, ACRS Attendees from EEC DISTRIBUTION:
Docket PWR-4 Reading DL Reading i
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. 51....).7 2 Focus ABC-Ste (Rev.9 53) AECM 0240 a u s oovt.Neer *NM4 OFFt1 1,M 416 46 8 8 0 010 7 0 -h[ - --
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'I ENCLOSURE NO. 1 i
DUKE POVER COMPANY - OCONEE NUCI. EAR POWER STATION UNIT l_
DOCKET NO. 50-269_
SUM"ARY OF MEETING - MAY 24, 1972
.Sumnarv with n ke Power A reeting was held at Bethesda, varyland on May 24, 1972 u
Following the attached scends, Duke Power
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Company and Babcock & Wilcox.
and B&W ende a detailed presentation on their efforts to determine the cause i
the and to effect a fix to prevent recurrence of the damage suffered by Oconee Unit 1 Reactor Vessel Internals durine hot functional testine.
B&W cave a comprehensive rundoun of what efforts are undervav in the five Conies of the presentation raterial (51 paces) have been areas of damage.
In surnarv it retained for the docket file and the PHP.~1 ranch No. 4 files.
g annears that B&W has found potential solutions to the flow induced vibratorv 5 i j
stresses believed to have caused the fatigue failures by lowering allowable stress icvels, increasinn the natural frecuency of conoonents and by j~
minimizing the forcine function frequencies. There also will be sienificant
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modification to the therral shield mounting and fixing to constrain rotion.
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B&W is proposing internals vibration instrurentation (which is still in the I
conceptual stane) with Safety Guide 20 " Vibration Measurements on Renetor loose parts Internals" in mind and is experleenting with systems to detect i
during operation. Tapes were played which dramatically detected actual loose parts impacts usinn a transducer placed on the outside of one of the oconee 1 steam generators.
j, Hopefully in the interest of savinn tire B&W will be in a position to
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docueent its redesinn and the basis therefore at an enriv date to nernit a p
timely review by the AEC.. The supportine information for the redesian basis d
would follow at a later date.
B&W plans to reassenble Unit 1 by October 1, Oconee 2
-11 1972 and be ready for Hot Functional Testing by Novceber 1.1972.
f would follow about one month later. The only redesten that has not been d
finalized relates to the possible use of fasteninc devices at the upoer end N,
of the thermal shield.
It was lef t un to Duke and B&W to establish their l
own schedule for submitting information for our review but they were told that we currently plan to no to the ACRS in November on Units 2 and 3.
It goes without saying that the Unit 2/3 review completion depends on resolution of Oconee 1 probless and therefore our schedule for Units 2 and 3 will be in jeopardy if this information is not received soon.
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ENCLOSURE 3 MEETING WITH DUKE AND B&W OCONEE REACTOR VESSEL AND INTERNALS MAY 24, 1972 AGENDA 1.
Introduction II.
Sunnary of Hot Functional Testing Operations III.
Sunnary of Inspections following HFT & Description of Damage IV.
Results and Conclusions of Failure Evaluations V.
Redesign Analysis VI.
Description of Design Changes a.
Reactor Vessel Nozzle b.
Internals VII. Summary and Schedule VIII.
Backup Investigative Programs a.
Hydraulic b.
Vibrations IX.
Plans for RFT Monitoring a.
Inside the Reactor Vessel b.
Loose Parts Monitoring
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h ATTENDANCE BABCOCK & WILC01 COMPANY - DUKE POWER COMPANY' INTERNALS MEETING May 24, 1972 NAME ORGANIZATION TITLE G.'D. Lindstrom Babcock & Wilcox Hydraulics - R&D Division L. J. Stanek Babcock & Wilcox Hydraulics - NPG P. S. Ayres Babcock & Wilcox Section Manager, Metallurgy R&D Division J. H. MacMillan Babcock '. Wilcox General Manager Reactor Department T. J. Kukk Babcock & Wilcox Manager, Technical Services J. H. Taylor Babcock & Wilcox Fact Finding Task Force R. R. Steinke Babcock & Wilcox Licensing
.D. E. Thoren Babcock & Wilcox Component Engineering A. H. Lazar Babcock & Wilcox Component Engineering E. O. Hooker habcock & Wilcox Unit Manager - Systems Design R. N. Bottorf Babcock & Wilcox Mt. Vernon Engineering Manager G. E. Kulynych Babcock & Wilcox Project Manager - Oconee G. J. Snyder Babcock & Wilcox Component Engineering W. H. Owen Duke Power Company Vice President Design Engineering J. W. Hampton Duke Power Company Assistant Sept. Oconee D. C. Aabye Duke Power Company Project Engineer K. S. Canady Duke Power Company Systems Nuclear Engineer P. H. Barton Duke Power Company Manager Technical and Nuclear Services S. K.'Blackley Duke Power Company Principal Mechanical Engineer W. S. Lee Duke Power Company SRVP - Engineering and Construction J. Ed. Smith Duke Power Company Supt. Oconee W.'O. Parker Duke Power Company Asst. Manager Steam Production
- M. W. Wambsgansa ANL ACRS Consultant M. W.-Libarkin ACRS Staff W. R. Stratton ACRS D. Lange AEC/ Licensing Chief, MEB A. Schwencer
AEC/ Licensing Chief, PWR-4 J. B. Henderson AEC/R0 RCB G. W. Reinmuth-
.AEC/R0 TAB Frank Jape AEC/R0 Region II C. E. Murphy-AEC/RO.
Region II L. L. Bunton AEC/R0 TAB D. E. Whitesell
-AEC/R0 RCB
~A. L. Cunnlegham AEC/ Licensing ICEB R.-M. Custr.fson AEC/ Licensing
- CEB U. Potapovs AEC/R0 Region II W.-J.' Collins AEC/R0 TAB I.~.A.
Peltier' AEC/ Licensing PWR-4 Project Leader D. K.-Davis-AEC/ Licensing PWR-4 H.' Faulkner AEC/ Licensing PWR-4 B..Buckley
-AEC/ Licensing PWR-4 Shou-nien HouL AEC/ Licensing MEB w
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