ML20211E268
| ML20211E268 | |
| Person / Time | |
|---|---|
| Site: | 07100510 |
| Issue date: | 02/05/1987 |
| From: | Richard Anderson GENERAL NUCLEAR SYSTEMS, INC. |
| To: | Rouse L NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20211E273 | List: |
| References | |
| REF-PROJ-M-37 27854, 611-0029-87, 611-29-87, NUDOCS 8702240277 | |
| Download: ML20211E268 (4) | |
Text
GENERAL NUCLEAR SYSTEMS,JNC.
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A Chem-Nudear Company February 5, 1987 3
611-0029-87 d
Mr. Leland C. Rouse, Chief 7
Advanced Fuel and Spent Fuel Licensing Branch Division of Fuel Cycle and Material Safety U.S. Nuclear Regulatory Commission Willste Building I
791F Eastern Avenue
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Reference:
Project M-37
Dear Mr. Rouse:
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SUBJECT:
CASTOR V/21 BORATED STAINLESS STEEL BASKET EVALUATION This submittal contains the results of the engineering evaluation and testing program which culminates our efforts to validate the use of borated stainless
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steel, in particular nominal 1.03 weight percent Radionox A 18, in the fabrication of the welded basket for the CASTOR V/21 spent fuel storage cask.
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This cask has previously been evaluated and approved using an all stainless steel basket employing the current basket design.
The Radionox A 18 basket is subject to the si.me mechanical design, fabrication and inspection controls as
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the all stainless basket.
This submittal incorporates several changes to our previous submittal based upon our meeting with NRC and Lawrence Livermore National Laboratory personnel in October 1986.
All comments from this meeting have been addressed in our report.
These changes involve additional structural analyses reflecting the as-built basket design and a material testing program which was implemented to establish minimum material properties such as strength, elongation and reduction in area and to verify Radionox as a ductile material.
Data from
, tensile testing was statistically analyzed using the methods delineated in Military Standardization Handbook, MIL-HDBK-5C.
The A-basis lower bound values (99% of population with 95% confidence level) were determined by these
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statistical analyses and were then used in establishing the minimum reaufred property values specified in the material procurement specification.
This i
speci fication is also included in this report.
Dynamic tear testing was perfomed to verify material ductility.
This testing was perfomed in accordance with ASTM E-604 over a temperature rance of -60 to 350*C, All 1
specimens tested exhibited fracture surfaces of 100% shear, as would he j
i evidenced in austenitic stainless steels.
The results from this testing shows that Radionox A 18 is a ductile material throughout the operating temperature range of the basket.
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As discussed with Mr. John Roberts of your staff, copies of this report will be transmitted to Mr.
Martin Schwartz of Lawrence Livermore Na tional
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Laboratory in parallel to this submittal.
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8702240277 870205 l
PDR PROJ
_f M-37 PDR 220 Stonerege Dove
- Coumba S;uth Caona 29210 * (803) 256-0450
- Teten 216947 V
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611-0029-87 Mr. Leland C. Rouse February 5, 1987 Page Two This submittal incorporates the following documents:
Document 1 - CASTOR V/21 Basket Analysis Coments and Responses This is a sumary of the responses to each of the coments developed as a
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result of the February 1986 and October 1986 meetings.
Document 2 - Material Evaluation Report (Revison 1)
The report presents the resul ts of the material tests perfomed to the Radionox A 18 in the base and weld material.
Also included is a discussion of the material strain acceptance criteria and background on the ASME N-47 Code Case.
Document 3 - CASTOR V/21 TSAR Revisions o
The TSAR calculations and write-up have been revised to reflect the changes from the INEL test basket to the current design in the areas of mechanical design, inspection protocols, and Radionox A 18 material specification.
The specific areas of basket structural evaluation include:
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Normal Handling Section 4.2.1.4.1 o
Thermal Stress Section 4.9.1.4.2
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o Accident Handling Section 8. 2.1. 2. 3. 3 r
Also 'ncluded:
o Material Specification (BS 05)
Appendix 3 o
Summary of Basket Dimension Appendix 8 Measurement Technique Document 4 - CASTOR V/21 Demonstration Test at INEL (Revision 2)
This report evaluates the conditions leading to the basket indications
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discovered following the DOE d^monstration testing of the CASTOR V/21 at INEL.
The thermal mechanisms experienced are directly related to the basket joint and ligament strains.
Very truly your,
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i Robert T. Anderson Director, Cask & Transportation Systems cmb/0016W Encl osures: CASTOR V/21 Borate'd Stainless Steel Basket Evaluation 10 Proprietary Copies 10 Non-Proprietary Copies c: Partin Schwartz 5 Proprietary Copies e
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AFFIDAVIT SUBMITTED TO THE U.S. NUCLEAR REGULATORY COMISSION BY GENERAL NUCLEAR SYSTEMS, INC.
H CONCERNING CONFIDENTIAL INFORMATION AND TRADE SECRETS STATE OF SOUTH CAROLINA)
) SS i
COUNTY OF RICHLAND
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I, Robert T. Anderson, depose and say that I am the Director, Cask and Transportation Systems, of General Nuclear Systems, Inc. (GNSI) duly authorized to make this affidavit, and have reviewed or caused to have reviewed the information which is identified as proprietary and referenced in the paragraph imediately below.
I am submitting this affidavit in confomance with the provisions of 10CFR2.790 of the Commission's regulations for withholding this information from public disclosure.
The information for which proprietary treatment is sought is as follows:
a 1.
Appendix to the GNSI Response to NRC Comments on CASTOR V Basket Analysis, January 1987.
2.
Material Evaluation Report for CASTOR V/21 Basket Material, Rev.1, January 1987.
3.
Material Specification for Radionox A-18 (X? Cr Ni B 1911) Used for Dry Spent Fuel Storage Cask CASTOR V/21 Fuel Basket.
Specification BS 05, Rev. 2, January 1987.
(TSAR Appendix 3).
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4.
Summary of Basket Dimension Measurement Technique.
(TSAR Appendix 8).
These documents have been appropriately designated as proprietary.
3 I have personal knowledge of the criteria and procedures utilized by GNSI in de'signating information as a trade secret or as privileged / confidential
. information of a comercial or financial nature.
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Pursuant to.the provisions of paragraph (h) (4) of Section 2.790 of the Comission's regulation, the following is furnished for consideration by the Comission in determining whether the information sought to be withheld from o
public disclosure, included in the above-referenced documents, should be wi thheld.
1.
The information sought to be withheld from public disclosure consists of design drawings and fabrication details which is owned and held in confidence hy GNSI, and not disclosed to any third party without first obtaining that party's written agreement to hold the information in confidence.
2.
The ownership of this information results in a substantial economic r
advantage to Gh!SI, over its competitors who do not know.or use it.
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The information is of a type customarily held in confidence by GNSI and not customarily disclosed to the public.
GNSI has a rational basis for determining the type of information to be held in confidence.
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The information is being transmitted to the Commission under the a
provisions of 10CFR2.790 with the understanding that it is to be
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received and held to confidence by the Commission.
5.
The information, to the best of my knowledge and belief, is not available in public sources, and any disclosure to third parties has been made pursuant to regulatory provisions or proprietary agreements which provide for continuing the confidentiality of the information and only to those parties who need to know the information.
so 6.
Public disclosure of the information is likely to cause substantial harm to the competitive position of GNSI because development of this information by GNSI required thousands of man-hours of effort and hundreds of thousands of dollars.
To the best of my knowledge and belief, other parties including competitors would have to undergo y
similar expense in generating equivalent information.
Public g
disclosure of the information would enable a competitor to avoid the effort and expense to develop this information and would enable that to ccmpetitor to develop a similar product at a significant cost savings,
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thereby impairing the competitive position of GNSI.
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(dh b'k/ M
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Robert T. Anderson Director, Cask & Transportation Systems General Nuclear Systems, Inc.
STATE OF SOUTH CAROLINA).
) SS COUNTY OF RICHLAND
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On this 5th day of February,1987, before me, a Notary Public in and for the State of South Carolina culy commissioned and sworn, personally appeared
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' Robert T. Anderson, to me known to be the Director, Cask and Transportation Systems for General Nuclear Systems, Inc., and on oath stated that he was m
authorized to make this affidavit on behalf of the corporation.
IN WITNE55 WHEREOF, I have set my hand and affixed my of ficial seal the day w
and year first above written.
Ofl[vl(L.
hikC
, L.S.
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Notary Public forJouth Carolina Tamara H. Jeffords My Commission Expires: August 2,1988 w
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