ML19337B620
| ML19337B620 | |
| Person / Time | |
|---|---|
| Issue date: | 07/21/1980 |
| From: | Advisory Committee on Reactor Safeguards |
| To: | Advisory Committee on Reactor Safeguards |
| References | |
| ACRS-1759, NUDOCS 8010080176 | |
| Download: ML19337B620 (12) | |
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7O MINUTES OF THE ACRS SUBCL*J1ITTEE MEETING ON METAL COMPONENTS JUNE 17-18, 1980 The ACRS Subcommittee on Metal Components met in Room 1046 at 1717 H Street N.W., Washington, DC at 8:30 a.m. on June 17 and 18,1980 to review the materials, metallurgy and mechanical engineering portions of the NRC's research budget and to hear a status report on the cracking and failures observed in the low pressure turbine discs of some turbines manufactured by Westinghouse.
Notice of this meeting.;as published in the Federal Register on May 15 and June 2,1980 (Attachment A). A copy of the detailed schedule of presentation is attached (Attachment B).
f No written statements from the,public were received nor were there any requests to make oral statements. The entire neeting was open to the public except the final hour and forty minutes which was closed to protect pmprietary information relating to manufacturing of low pressure steam turbines (5 USC 552b(c)(4)).
No written reports were issued or appmved by the Subcoranittee at this meeting. A list of documents provided to the Subcommittee during this meeting is attached (Attachment C).
Attendees ACRS NRC Staff P. G. Shewmon, Chairman J. Musgara, RES H. Etherington R. M. Kenneally, RES M. Bender M. Vagins, RES S. Bush, Consultant P. Wu, RES R. Dillon, Consultant J. Stmsnider, NRR M. Wechsler, Consultant B. Tumvlin, NRR E. Rodabaugh, Consultant R. W. Klecker, NRR H. Corten, Consultant J. Grant, NRR T. W. Pickel, Consultant C. Z. Serpan, RES J. C. McKinley, ACRS Staff H. I. Gregg, SD 8010080/7(O
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NRC Staff (cont'O Other H. A. Wil ber, IE Joanne Dann, McGraw-Hill F
C. Cherny, NRR Mae Haley, Westinghouse E. Hemmington, NRR Jerry Schmeekrc2y, Westinghouse R, E. Johnson, NRR Patrick Higgins, AIF R. M. Gamble, N' '
M. C. Simons, Alderson Inc.
L. C. Shao, RSR Vincent S. Noonan, EB J. Richardson, RES NRC Consultants & Contractors H. A. Wil ber, I&E R. Brosum, B&W R. G. Brasfield, D.A. I.
W. N elton, flRR L. L. Yea ge r, D. A. I.
D. D. Reiff, RES Thomas S. Bulischeck, Brookhaven N. Lab.
J. J. Burns, RES S. Granapath, U. of Michigan J. O' Brien, RSR R. W. McClung, Oak Ridge N. Lab.
Terry Mil burn, RSR David O. Harris, Science Applications S. Pawlicki,'NRR W. J. Shaeic, Argonne N. Lab.
Ed Jordan, I&E R. A. Clark, PNL W. F. Anderson, SD J. R. Weeks Brookhaven N. Lab.
S. S. Kirslis, NRR J. Jackson, S.W. Research Inc.
F. L. Becker, PNL P. C. Paris, Washington U.
P. H. Hutton, PNL Opening Statement Dr. Shewmon, Subcommittee Chairman, opened the meeting at 8:30 a.m. with a statement regarding the conduct of the meeting in accordance with the provisions of the Federal Advisory Committee Act and the Government in the Sunshine Act. Mr. J. C. McKinley was the designated federal employee.
Meeting With NRC Office of Research, Metallurgy and Materials Re. search Branch Mr. Charles Serpan described two areas of research s ri./.ed by the Metallurgy and Materials Research Branch that have not previously been considered by an ACRS Subcommittee. These were non-destructive examination methods and steam generator degradation.
He provided a brief overview of l
the entire Branch budget request for FY 82 as shown below:
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Fracture Mechanics
$6.0 R Operating Effects on Materials 7.6 R Non-Destructive Examination 3.4 R Total
$17.0 R This budget proposal was related to the five year (FY 80 to FY 85) plan (see Figures 1-3) for plant operational support. Programs receiving major increases in funding are; Degraded Piping, HSST-Pressurized Thermal Shock, Environmentally Assisted Pipe Cracks, Examination of Retired Steam Generator, and the Reliability of Ultrasonic Flaw Detection Techniques (see Figure 4).
Sf the several areas of responsibility of the Metallurgy and Materials Research Branch, only those related to flaw detection and evaluation and corrosion-environment effects were considered at this meeting. The others had been addressed at an earlier meeting at Oak Ridge National Laboratory.
Mr. Serpan briefly described each program and then representatives from the contractors described them in greater detail.
Pacific Northwest Laboratnry is working on integration of non-destructive examination reliability and fracture mechanics ii. an attempt to update the ASME Code requirements and improve them over what is now being used. Work is being done by two contractors on synthetic aperture focusing technique for ultrasonic testing (SAFT-UT). The University of Michigan is doing the technology development while Southwest Research is trying to transfer the technology to field application. SAFT-UT is interesting in that it can provide a three dimensional computer image of a flaw. The technique appears to have promise but will require further development in order for it to be used outside the laboratory. Overseas interest has been expressed on this Pacific Northwest Laboratory is working on a system of continuous program.
acoustic emission monitoring for crack detection (detect crack gmwth during hydrostatic testing and detect the sound of leaking fluid through a crack during normal operation). Daedalean Associates is working on another continuous monitoring technique based on the internal friction of material at the tip of a flaw before it becomes a crack. This j
appeared to be accomplished by measuring the acoustic damping of an imposed signal. The Subcommittee appeared to feel that this technique was not very pmmisi.79 Oak Ridge National Laboratory is working on a multiple frequency eddy current detection device for inspecting steam i
generator tubes. They hope to field test the device in the near future.
a There was some discussion as to why the NRC should fund some of this research instead of industry and in some cases it appeared that the NRC was subsidizing the development of new commercial equipment. At Dr. Shewman's request, the ACRS office has been provided with a copy of the user's request for each project.
Argonne National Laboratory continues to work on environmental effects on stress corrosion and cracking in both BWR and PWR systems. This pmject is slated for a budget increase of about $1.85 from FY 80 to FY 81 and another increase of about $0.7M from FY 81 to FY 82. The NRC Staff is looking for ACRS guidance in this particular area.
Brookhaven National Laboratory (BNL) and Pacific Northwest Laboratory (PNL) are both working on the problem of steam generator tube integrity.
In addition to those two labs, Oak Ridge National Laboratory (ORNL) is working on the assessment of steam generator degradation; this includes a combined effort in the examination of the retired Surry steam generator currently being examined at PNL.
There was some discussion of the need for a oM facility to test full scale (20") piping configurations to destruction.
Mr. Richardson described the programs that come under the cognizance of Mechanical Engineering Research Branch. The branch is recently created and its budget request for FY 82 is:
Seismic Safety Margin Research
$ 2.5 E Mechanical Reliability & Performance 3.6 E Structural Reliability & Performance 3.1 M General Reliability & Performance 0.8 M
$10.0 M The ob.iecthms of the seismic safety margins research pmgram are to estimate the conservatisms in the standard review plan seismic safety re-quirements, develop impmved requirements, and develop methods that realistically estimate the behavior of nuclear power plants during an ea-thquake.
Part of the pmgram is to develop the necessary fragility descriptions (pmbability of failure as a function of seismic input) for components, systems, end structures. The major effort under Mechanical Reliability and Performance of Systems and Components is evaluation of pressurizer relief and safety valves (N $2.0 M). This is in addi;. ion to the EPRI test programs for both PWR and BWR safety and relief valves which were al so described.
The next most significant program was pump and valve qualification which is aimed at developing acceptance criteria and methods of qualification. ($0.6 I). The objective of the Structural Reliability programs is to insure that strength, stability, and resistance requirements under adverse accident and environmental conditions are met. Major pmgrams under this heading include Load Combination ($1.0 K), computer
codes ($0.65 M), and advanced seismic designs ($0.5 R). The General Reliability program is to provide technical support for systems and component reliability and performance. The major elements include foreign liaison, seismic qualification testing, and the influence of in-service inspection on probabilistic risk assessment.
There was an apparent feeling by the Subcommittee that there was too much emphasis on the seismic aspects in the projects being under-taken by the Mechanical Engineering Research Branch.
In addition to the work being sponsored by Research there are a number o f technical assistance contracts under NRR control. Mr. Cherny summarized those sponsored by the Mechanical Engineering Branch (not to be confused with the Mechanical Engineering Research Branch), these fall in two broad categories, casework assistance and technical projects.
Other Divisions and branches also sponsor technical assistance contracts and those related to materials and systems performance were described.
The Office of Inspection and Enforcement has also sponsored a technical assistance contract to, as needed, independently validate licensee reports, provide engineering analyses of licensee actions, and provide expert testimony at public hearings.
Meeting With NRC Division of Engineering on Fracture Toughness Criteria The Subcommittee discussed with Mr. Hazelton the genesis of the minimum fracture toughness requirement of 50 ft-lbs for reactor pressure vessel material.
The precise derivation and basis is lost in history but the value was a compromise that permitted all of those involved in the decision to feel confident that, if a material failure were to occur, it would be of the
" leak before break" type rather than a catastrophic brittle rupture. The 50 ft-lb value was used as a point of good' fracture toughness and the temperature associated with this value was a good indication of the shift (embrittlement) of the fracture toughness curve as a result of neutron fl ue nce. The concern now is that some irradiated materials may not be able to absorb 50 ft-lb at any temperature and how do we detemine that they have adequate fracture toughness.
The conclusion was that 50 ft-lb was not absolute and 45 or 40 might have been just as good. The only plant to currently fall below 50 ft-lb is Yankee, Rowe.
If the value falls below 50 ft-lb then the licensee must make a 100% volumetric exam of his vessel (really only that portion below 50 ft-lb), calculate or determine fracture toughness by some means other than the Charpy V-notch test, and make a fracture analysis to assure continued safe operation.
Meeting With NRC Division of Engineering on Turbine Disc Cracking (Closed Session 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 40 minutes)
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Federal R: sister / Vcl. 45. Ms.107 / M:nday, June 2.1980 / N:tices y7311 disco mt coupon -onstitutes a promise Law 52-463). as amended. notice is February 13.1980. these sessions will be by the manufacturer to pay the hereby given that a meeting of the closed to the public pursuant to consumer a fixed amount. it does not Museum Panel to the National Council subsections (c)(4), (6) and 9(b) of section relate to the carrier's relationship to the on the Arts will be held june 17.1980 552b of Title 5. United States Code.
sh:pper and therefore would not be a from 9-00 a.m -5.30 p.m. and lune 18.
Further information with reference to rebate as that term is used in 19e0 from 900 a.m-8:30 p.m in Room this meeting esn be obtained from Mr.
I 11904(b)(1) nor does it appear to 1422. Columbia Plaza Office Complex.
John H. Clark. Advisory Committee violate the Antent of the tanff publication 2401 E St N.W, Washington. D.C.
Management Officer. National provisions of section 10761(a). The plan A portion of this meeting will be open Endowment for the Arts. Washington, is ayallable equally to all household to the public on June 17.1980 from 9c0 D.C. 2050s, or call (202) 834 4070 goods movers and. thus, to all their a.m.-5.30 p.m. for the discussion of customers. According!). we do not Policy.
gg beheve 49 CHL 1004.2(d)is appiscable.
He remaining sessions of this j,
88 The carner here would act merely as a
. meeting on June 18.1980 from eco a.m.-
conduit between MCA and the 5.30 p.m. are for the purpose of Panel P D" "*" " ** *"' "I consumer.
review. discussion. eva!uation. and
""'8'8 88"" "d" Interested persons are invited to recommendation on applications for comment. While we do not believe this financial assistance under the National is a significant action affecting Foundation on the Arts and the NUCLEAR REGULATORY cdversely the quahty of the human Humanities Act of1965. as amended.
COMMISS80N environment or conservation of energy including discussion of information resources comments on this issue are given in confidence to the spency by Adytaory Committee on Reactor also welcome.
grant applicants. In accordance with the Safeguards. Subcommittee on Metal This notice of declaratory orderis detennination of the Chairman Componer.ts; Meeting issued under the authonty of 5 U.S C.
published in the Federal Register of section 554!e). and 40 U.S.C. sections February 13.1980. these sessions will be He ACRS Subcommittee on Metal 10101.10321. and 10521.
closed to the public pursuant to Components will hold a meetmg on June Decided May 22.19eo.
subsections (c)(4). (6) and 9(b) of 17-18.1980 in room 1046.1717 H SL NW, By the Comnussion Chairmen Gaskins.
section 522b of Title 5, United States Washington. DC 20555. Notice of this
%ce Chairman Gresham Commissioners Code.
meeting was published May 15.1980.
Stsfford. Clapp. Tranrum. Anrua and Gilham.
Further mformation with reference to In accordance with the procedures
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this meeting can be obtained from Mr.
outlined in the Federal Register on Agatha I. L John H. Clark. Advisory Committe:
October 1.1979 (44 FR 56406). oral or Management Officer. National written statements may be presented by
,,g Endowment for the Arts. Wgshington.
members of the public, recordings will
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D.C. 20506. or call (202) 634-6070 be permitted only during those portions me ng w a tragt la W DEPARTMENT OF JUSTICE Dated: May 22.19so' kept and questions may be asked only jolm H. Clark by members of the Subcommittee,ita Office of the Attomey General Dirvesor. Offim of CouncilandPtmel consultants, and Staff. Persons desiring OPeratene &conchiematfor the Ana United States Circutt Judge to make oral statements should notify p om awamm w ma an =1 N:minating Commission Seventh the Designated Federal Employee as far m aio caos. w 4
- Circuit Penet Meeting in advance as practiceWe so that appropriate arrangements can be mede ne Seventh Circuit Panel of the Media Arts Panet (AFI); Meeting to allow the necessary time during the United States Circuit Judge Nominating meeting for such statements.
Commission (Chairman:Justin A.
Punuant to Section 10(aM2) of the The agenda for subject meeting shall Stanleyj wi!! hold its next meeting on Federal Advisory Committee Act (Pub.
be as follows:
Wednesday, June 18.1980, in Room 2781 L 92-463). as amended, notice is bareby cf the Federal Building. 219 South pven that a amting of 6e Media Ada Tu,esday and Wednesday. J,inw 27-ra, Jana Dearborn Street. Chicago. Illinois at ranel(AFI) to the National Counal on
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each day.
10.30 AM ne meeting will be devoted f m nd 3 980 from
%e Subcommittee may meet in to a discussion of applicants and will be closed to the public pursuant to PJ 92-9:00 a.rn[.530 p m in the 12th Floor Executive Session, with any ofits 463. Section 10(d) as amended. [CF 5 Screening Room of the Columbia Plaza consultants who may be present, to
.S C. 552b(c)(6)].
Office Building. 2401 E St NW.,
explore and exchange their prehminary Phillip B. Cover.
Wa shington. D.C.
opinions regarding matters which should Committee Management ControlO$cer.
His meeting is for the purpose of be considered during the meeting.
Panel review discussion, evaluation.
At the conclusion of the Executive I" D" ** N ** * * "I and recommendation on applications foi Session, the Subcomminee will bear
""'o coes asis.'"
(
financial assistance under the National Presentations by and hold discussions Foundation on the Arts and the with representatives of the NRC Staff.
NATIONAL FOUNDATION ON THE Humanities Act of1965. as amended, their consultants and other interested ARTS AND THE HUMANmES including discussion ofinformation Persons regarding pertinent portions of given in confidence to the agency by the NRC research program for the ACRS Museum Panel; Meeting
' grant applicants. In accordsace with the enn alreg to Co na Pursuant to Section to (a)(2) of the determination of the Chainnen Federal Advisory Committee Act (Public Published in the Federal Register of the 1978 NRC Authorization Act to review the NRC sesearch program and
37312 Fed:rd R2 sister / Vol. 45. Ns.107 / Monday, June 2.1980 / Neticis budget and to report the results of the (Docket No. S0-409 (FTDL Proceeeng))
Company (the licensee) for operation of review to Congress. In order to perform the North Anna Power Station. Unit No.
this review, the ACRS must be able to Delryland Power Cooperative (La 1 (the facility) located in Louisa County, engage in frank discussions with Crosse Bolling Water Reactor); Order Virginia.The amendment is effective as members of the NRC Staff and such May 23. loso.
ofits date ofissuance.
discussions would not be possible if ne prehearing conference announced The amendment corrects an held in public sessions. In addition, it in our Memorandum and Order Settine ac'.ministrative error presently existing may be necessary for the Subcommittee Prehearing Conference, dated May 21, in the Technical Specifications regarding to hold one or more closed aessions for 1980, will commence at 8:30 a.m. on the maximum response time expected the purpose of exploring matters Hursday June 19.1980,in Room 308, from the onset of a detected degraded involving proprietary information.1 have Cartwright Center. University of off.iite power system until the 4
determined. therefore,in accordance Wisconsin at IJ Crosse. La Crosse, em stgency diesel generator is supplying with Subsection 10(d) of the Federal Wisconsin 54601.De conference will power to the emergency buses.
Advisory Committee Act (Public Law consider various matters covered by 10 92-483). that, should such sessions be CFR I 2.752, as well as the manner in D'spplication for the amendment required. it is necessary to close which the parties propose to respond to - comph.es with the standards and portions of this meeting to prevent the questions or areas ofinquiry set.
requiements of the Atomic Energy Act frustration of the above stated aspect of forth in the May 21.1980 Memorandum of 1054, as amended (the Act) and the i
the ACRS' statutory responsibilities and and Order. No oral limited appearance Co amission's rules and regulations. The j
to protect proprietary information. See 5 statements will be taken. He Board will C. amission has made appropriate U.S.C. 552b(c)l9)(B) and 552b(c)(4).
endeavor to adjourn the conference by undiga as required by the Act and the Further information regarding topice 3:00 p.m. on June 19.
Comnission's rules and regulations in 10 It is so ordered.
CFR Chapter I. which are set forth in the to be dacussed. whether the meetmg licensa amendment. Prior pubhc notice has been cancelled or rescheduled. the Dated at Bethesda. Maryland this 23rd day Chairman's ruling on requests for the of May teso.
of this amendment was not required since the amendment does not involve a opportunity to present oral statements For the Atomic Safety and Ucansing Board, and the time allotted therefor can be Gartasrau.rer, significant hazards consideration.
obtained by a prepaid telephone call to cairman.
ne Commission has determined that the issua'sce of this amendment will not the cognizant Designated Federal p on miesesm.o.m.amau mi result in any significant environmental Employee Mr. John C. McKinley saa.ase coes rues.ews i
(telephone 202/634-3265) between 8:15 impact and that pursuant to 10 CFR a.m. and 500 p.m EDT.
Section 51.!(d)(4) an environmental (Docket Nos. 50-444,50-4491 impact statement. or negative May 23. teso.
loba C. Hoyle.
Potomac Electric Power Co.,(Douglas declaration and environmentalImpact i
Adrusory Comms ze Management Officer.
Point Nucteer Generating Station, appraisal need not be prepared m s
connection with the issuance of this Unita 1 and 2) Ordw Twminating the amendment.
in D= *ianas r'.4 we.am ino:"I Proceeding For further details with respect to this On May 8.1980. Potomac Electric acts, n see (1) the application for the Power Company notified the Director of
[Docaet Nos. 50-295. 50-304)
Nuclear Reactor Regulation that it's amendment dated January 8.1980;(2) application for an early site review is Amendment No.18 to Facility Operating Commonwealth Edlaen Co. (Zlon withdrawn.
License No. NPF-4: and (3) the Station, Unita 1 and 2); Argument On May 14.1980, counsel for the Cmmnission's related Safety Evaluation.
Order utility requested the Ucensing Board to These items are available far pubhc issue an order terminating the inspection at the CommissioTo Public May 23. toen proceeding. He proceeding is Document Room.1717 H Street. N.W.,
This Board will hear oral argument in terminated.
Washington, D.C. 20555 and at the Board of Supervisor's Office. l.cuisa this case at 10.D0 a.m. on Tuesday. July it is so ordered.
J.19d0. in the NRC P,blic Hearing Dated at Bethesda, Maryland this 27th day County Courthouse. Emaisa. VWnia Room. Fifth Floor. East. West Towers of May teso.
23093 and at the Alderman Library.
Building. 4350 East West Highway.
For the Atomic Safety and ucensing Board. Manuscripts Department. University of Bethesda. Afaryland. Each side will be Elizabeth S. Bowers.
Virginia. Charlottesville. Virginia 22901.
allowed one hour for agrument.
A copy ofitems (2) and (3) may be gj,m Intervenor.sppellant. the State of obtained upon request to the U.S.
@ Du mm M sma au m' Illinois, msy reserve a portion of its Nuclear Regulatory Commission.
allotted time for rebuttal.ne applicant Washington D.C.20555. Attention:
and staff shall divide their time equally Director. Division of Licensing.
unless we are advised that they have (Docket No. 50-3301 Dated at Bethesda. MI and this 18th day l
agreed on some other arrangement
/t is so ordered.
Virginia Electric & Power Co.;lasuance of May, tosa of Amendment to Factilty Operahng For the Nuclear Regulatory Commission.
For the App 4 Board.
License Robert A. Clark.
-I
' *P' The U.S. Nucleer Regulatory Chief.OPeNfini Aeoctors Smach 8J.
i Secretary to the AppealBoard Commission (the Commission) has Division ofi.icensing.
Im D= *i*$so N 5*-am ms =i issued Amendment No.18 to Facility in Dw. es-teams N wo.am ses mi saia's cons ries 4ws Operating License No. NPF-4 issued to anAasa com res>4ws the Virginia Electric and Power D""
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RE'JISED 6/12/80 ACRS SUBCO:1:11TTEE MEETING ON METAL COMPONENTS JUNE 17 & 18, 1930 WASHINGTON, DC TENTAT:VE SCHEDULE JUNE 17, 1980 APPR0XIMATE TIME SPEAKER i
8:30 a.m.
Chairman's Opening Statement Shewmon 8:40 a.m.
Overview Serpan, Muscara (NRC) 9:00 a.m.
Reliability of Piping Harris (SAI) 9:30 a.m.
Steam Generator Integrity Clark (PNL)
- BREAK ********
10:30 a.m.
10:45 a.m.
Steam Generator Tube Corrosion vanRooyen(BNL) 11:15 p.m.
Eddy Current ISI McClung (0RNL)*
11:30 a.m.
Pipe Cracking and Environnental Effects Shack (ANL)
- LUNCH ********
12:45 p.m.
1:45 p.m.
Qualification Tests of Safety Relief Valves, PORV, etc.
Noonan(NRC) 2:45 p.m.
Continuous Acoustic Emmission Monitoring Hutton (PNL) 3:15 p.m.
Incipient Crack Monitoring Yeager (Daedalean) 3:45 p.m.
Reliability of NDE Becker (PNL)
- * * * * * *
- BREAK ********
4:15 p.m.
4:45 p.m.
SAFT-UT Development Ganapathy (U. of Michigan) 5:15 p.m.
Adaptation of SAFT-UT to ISI Jackson (SwRI) 5:45 p.m.
Low Shelf Energy Concerns (Pre.;sure Vessels, Basis for Operating below 50 ft.lb., eg., Yankee Rowe)
Hazelton(NRC) 6:30 p.m.
Caucus by Subcommittee 6:45 p.m.
Adjournn'ent
- Early plane out
a ACRS SU300'tMITT_' *EETING.
v., METAL COPJ3NE'iTS JJnE 17 L 18, 1980 WASHINGTON, DC JUNE 18, 1980 SPEAKER APPROXIMATE TIME Shewmon 8:30 a.m.
Chairman's Remarks Richardson, O'Brien (NRC) 8:40 a.m.
Overview SSMRP Mechanical Engineering Portion 9:00 a.m.
Mechanical Safety and Performance of Systems and Components 9: 45 a.m.
- BREAK 10.30 a.m.
Structural Safety and Performance of Systems and Components 4
10:45 a.m.
General Safety and Performance of Systems and Components 11:15 a.m.
- * * * * * *
- LUNCH ******
- 12:30 p.m.
4 1:30 p.m.
NRC Technical Assistance Programs Bosnak/Noonan Engineering Johnson
- Safety Technology Anderson Standards Jordan Inspection & Enforcement
- * * * * * *
- BREAK ********
3:00 p.m.
Hazelton(NRC) 3:15 p.m.
Turbine Disc Failures 4:15 p.m.
Safety Aspects of Turbine Disc Failures (NRC) 4:45 p.m.
Probability of Turbine Disc Failures (NRC) 5:15 p.m.
Caucus by Subcommittee 5:30 p.m.
Adjournment NOTES:
1.
Budgetary discussions are proprietary.
Turbine Disc Failures Presentation by W. Hazelton is expected to be 2.
proprietary.
Safety Aspects and Probability of Failure of Turbine Disc presentations 3.
are being negotiated with the Staff at the present time.
__