ML17348B386
| ML17348B386 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 02/04/1992 |
| From: | Plunkett T FLORIDA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML17348B387 | List: |
| References | |
| L-92-02, L-92-2, NUDOCS 9202140287 | |
| Download: ML17348B386 (11) | |
Text
ACCELERATED DI UTION DEMONST TION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RXDS)
ACCESSION NBR:9202140287 DOC.DATE: 92/02/04 NOTARXZED: YES FACIL:50-250 Turkey Point Plant, Unit 3, Florida Power and Light C 50-251 Turkey Point Plant, Unit 4, Florida Power and Light C AUTH.NAME AUTHOR AFFILIATION PLUNKETT,T.F.
Florida Power 6 Light. Co.
RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
RECIPXENT XD CODE/NAME PD2-2 PD
SUBJECT:
Forwards proprietary "Low Upper-Shelf Toughness Fracture Analysis of Reactor Vessels of Turkey Point Units 3
6 4 for Load A 6 B Conditions" for review 6 approval. Analysis withheld (ref 10CFR2.790).
DISTRIBUTXON CODE:
AP01D COPIES RECEIVED:LTR ENCL SIZE:
TITLE: Proprietary Review Distribution Operate.ng Reactor NOTES: ggg /P~(-P~
RECIPIENT COPIES COPIES ID CODE/NAME LTTR ENCL LTTR ENCL PD2-2 LA 1
1 1
1 AULUCK,R 3
3 DOCKET 05000250 05000251 R
D D
D INTERNAL: AEg G FILE EXTERNAL: NRC PDR 01 1
1 1
1 0QP OGC/HDS3 1
0 D
NOTE TO ALL"RIDS" RECIPIENTS:
D D
PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!
TOTAL NUMBER OF COPIES REQUIRED:
LTTR 9
ENCL 7
P.O. Box 029100, Miami, FL, 33102-9100 FEB 0 41992 L-92-02 10 CFR 2.790 10 CFR 50, Appendix G
U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C.
20555 Gentlemen:
Re:
Turkey Point Units 3 and 4
Docket Nos.
50-250 and 50-251 Low Upper-Shelf Toughness Fracture Analysis of Reactor Vessels of Turkey Point Units 3
and 4 for Load Level A and B Conditions The purpose of this letter is to request NRC review and approval of the enclosed analysis on low upper-shelf toughness fracture of the Turkey Point Units 3 and 4 reactor vessels for load level A and B
conditions, in accordance with the requirements of 10 CFR 50 Appendix G, Section V.E.
By letter L-89-190 dated June 16, 1989, Florida Power and Light Company (FPL) proposed to incorporate the most recent developments in analytical techniques in the analysis of a low upper-shelf fracture toughness condition of the Turkey Point Units 3 and 4
reactor vessels.
The enclosed analysis uses the elastic-plastic fracture mechanics methodology and acceptance criteria developed by the American Society of Mechanical Engineers (ASME)Section XI Working Group on Flaw Evaluation.
Material properties for the Turkey Point vessels were characterized using pattern recognition analysis similar to those described in NUREG/CR 5356.
An extensive J-resistance data base was assembled for this task.
The results of the analysis for the Turkey, Point vessels are evaluated against the acceptance criteria for low upper-shelf fracture toughness
- analysis, developed by ASME Boiler and Pressure Vessel Code Section XI.
The elastic-plastic fracture mechanics evaluation performed shows that the crack driving force applied is significantly lower than the material toughness at a crack extension of 0.1 inch, as specified by ASME Section XI.
Also, the analysis results demonstrate that when the crack driving force is equal to the material toughness, crack growth is stable, as required by ASME Section XI.
Additional loading margin exists since the Turkey Point vessels were fabricated using only circumferential welds in the beltline.
The analysis clearly shows that the material has excellent toughness
- and, although the upper-shelf energy of the Turkey Point vessels may drop below 50 ft-lbs, there will be adequate margin of safety against fracture through at least 40 years of operation.
9202140287 920204 PDR ADOCN 05000250 PDR an FPL Group company
L-92-02 Page 2
The information provided in the enclosure is proprietary to, and provided by, the B&W Owners Group and accordingly, it is requested that the enclosed be withheld from public disclosure in accordance with paragraph (b) (4) of 10 CFR 2.790.
The affidavit, included in the enclosure, sets forth the basis on which the information may be withheld from public disclosure by the Commission and addressees.
Should there be any questions, please contact us.
Very truly yours, T. F. Plunkett Vice President Turkey Point Nuclear TFP/OIH enclosure cc:
Stewart D. Ebneter, Regional Administrator, Region II, USNRC (w/o enclosure)
Senior Resident Inspector,
- USNRC, Turkey Point Plant (w/o enclosure)
James H. Taylor, B
W Utility Owners
- Group, B
W Nuclear Service Company (w/o enclosure)
ENCLOSURE TO L-92-02 LOW UPPER-SHELF TOUGHNESS FRACTURE ANALYSIS OF REACTOR VESSELS OF TURKEY POINT UNITS 3 AND 4 FOR LOAD LEVEL A & B CONDITIONS PROPRIETARY
AFFIDAVIT OF JAMES H.
TAYLOR A.
My name is James H. Taylor. I am Manager of Licensing Services for B&W Nuclear Technologies, a participating member in the B&W Utility Owners Group (B&WOG) and as such I am authorized to execute this Affidavit.
B.
I am familiar with the criteria applied by the Nuclear Regulatory Commission (NRC) to determine whether certain information of the B&WOG is proprietary.
C.
In determining whether a
B&WOG document is to be designated as proprietary information, an initial determination is made by the Unit Manager who is responsible for originating the document as to whether it falls within the criteria set forth in Paragraph D
hereof. If the information falls within any one of these criteria, it is designated as proprietary by the originating Unit Manager.
This initial determination is reviewed by the cognizant manager at the next higher organizational level.
If the document is designated as proprietary, it is reviewed again by me to assure that the regulatory requirements of 10 CFR Section 2.790 are met.
D.
The following information is provided to demonstrate that the provisions of 10 CFR Section 2.790 of the Commission's regulations have been considered:
The information has been held in confidence by the B&WOG.
Copies of the document are clearly identified as proprietary.
l The following criteria are customarily applied by the B&WOG in a rational decision process to determine whether the information should be designated as proprietary.
Information may be designated as proprietary if one or more of the following criteria are met.
a.
Information reveals cost or price information, commercial strategies, production capabilities, or budget levels of the B&WOG or its suppliers.
b.
The information reveals data or material concerning the B&WOG research or development plans or programs of present or potential economic advantage to the B&WOG.
c.
The use of the information by a
non-member would decrease his expenditures, in time or resources, in designing, producing, or marketing a similar product.
d.
The information consists of test data or other similar data concerning a process, method or component, the application of which results in an economic advantage to the B&WOG.
e.
The information reveals special aspects of a process,
- method, component.
or the like, the exclusive use of which results in an economic advantage to the B&WOG.
f.
The information contains ideas for which patent protection may be sought.
The document(s) listed on Exhibit "A", which is attached hereto and made a part
- hereof, has been-evaluated in accordance with the B&WOG procedures with respect to classification and has been found to contain information which falls within one or more of the criteria enumerated above.
Exhibit "B", which is attached hereto and made a
part'ereof, specifically identifies the criteria applicable to the document(s) listed in Exhibit "A".
The document(s) listed in Exhibit "A", which has been made available to the United States Nuclear Regulatory Commission was made available in confidence with a request that the document(s) and the information contained therein be withheld from public disclosure.
The information is not available in the open literature and to the best of our knowledge is not known by other organizations with interests and activities similar to those of the B&WOG.
(v)
Specific information with regard to whether public disclosure of the information is likely to cause economic harm to the position of the B&WOG, taking into account the value of the information to the B&WOG; the amount of effort or money expended by the B&WOG developing the information; and the ease or difficultywith which the information could be properly duplicated by others is given in Exhibit "B".
E.
I have personally reviewed the document.(s) listed on Exhibit "A" and have found that it is considered proprietary by the B&WOG because it contains information which falls within one or more of the criteria enumerated in Paragraph D, and it is information which is customarily held in confidence and protected as proprietary information by the B&WOG.
This report comprises information utilized by the B&WOG in its business which afford the B&WOG an opportunity to obtain an economic advantage over those who may wish to know or use the information contained in the document(s).
James
. Taylor State of Virginia)
)
SS.
Lynchburg City of Lynchburg)
James H. Taylor, being duly sworn, on his oath deposes and says that he is the person who subscribed his name to the foregoing statement, and that the matters and facts set forth in the statement are true.
James H. T or
,. Subscr'ibed and swo n befor me th'i's ~ day of 1991.
Notary Public in and for the City of Lynchburg, State of Virginia d'y Commission Expires
~
~
I 1
1 C
EXHIBITS A & B EXHIBIT A
~
BWOG Materials Committee, Reactor Vessel Working
- Group, Proprietary Report BAW-2118P, "Low Upper Shelf Toughness Fracture Analysis of Reactor Vessels of Turkey Point Units 3
and 4 for Load Level A
& B Conditions",
November 1991.
EXHIBIT B The above listed document contains information which is considered proprietary in accordance with Criteria b, c,
d, and e of the attached affidavit.
I Lf ll