ML20210E678
| ML20210E678 | |
| Person / Time | |
|---|---|
| Site: | 07109151 |
| Issue date: | 09/05/1986 |
| From: | Poppe L CHEM-NUCLEAR SYSTEMS, INC. |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20210E683 | List: |
| References | |
| 27379, RA-0473-6, RA-473-6, NUDOCS 8609250071 | |
| Download: ML20210E678 (5) | |
Text
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EETURN TG39~6-ss 7/-cj/5/
YCHEM-NUCLEAR SYSTEMS,INC.
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September 05, 1986
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RECENED '%,n 3
- 2 SEP 91986,P T Mr. Charles E. MacDonald, Chief u n cttMtntcutnonY I
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Transportation Certification Branch Division of Fuel Cycle and Material u
Safety, NMSS 4G p* 1 '
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U.S. NUCLEAR REGULATORY COMMISSION Washington, D.C.
20555
REFERENCE:
Docket No. 71 -91 51
Dear Mr. MacDonald:
Attached is the information requested in your letter of July 23, 1986, regarding our June 9,1986 amendment request for the Model No. CNS 14-170, Series III package.
The information has been provided as additional drawings and a completely revised document CNSI 9151-S1, Revision No.1, with changes marked in the margins.
If we can be of any further assistance, please do not hesitate to contact us.
Respectfully,
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Le lie K. Poppe, Director of Licensing CHEM-NUCLEAR SYSTEMS, INC.
LKP/cc Enclosures g-~
l Supplement CNSI 9151-S1, Rev.1 Drawings: C-110-D-0016, Rev. C (2 sheets)
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C-110-D-0017, Rev. B (2 sheets) usW1 SEP 9)ggy'p C-110-D-0018, Rev. B (2 sheets) 2 4n C-110-D-0019, Rev. B (1 sheet) 9-n Mt rcn0M 7
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CHEM-NUCLEAR SYSTEMS, INC.
RESPONSES TO U.S. NUCLEAR REGULATORY COPMISSION COPMENTS
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Reference:
Letter, MacDonald, NRC, to Poppe, CNSI, 7/23/86)
Chem-Nuclear Systems, Inc.
Model No. CNS 14-170, Series III Package Docket No. 71 -91 51 September 1986 Chem-Nuclear Systems, Inc.
220 Stoneridge Drive Columbia, South Carolina 29210 t
71 -91 51, 9 /86 Page 1 of 3
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Drawings 1.
The application is incomplete in that Drawing Nos. C-110-D-0018, Primary Lid Weldment, and C-110-D-0019, Secondary Lid Weldment, have not been included in the application.
CNSI Drawing Nos. C-110-D-0018, Rev.
B, and C-110-D-0019, Rev.
B, are included in Revision 1 of the application.
2.
Identify the weld joints to be non-destructively examined, the method to be used, and the code or standard for the examination procedure and acceptance criteria.
Appropriate NDE symbol s and notes have been added to drawings C-110-D-0017, C-110-D-0018 and C-110-D-0019.
3.
The drawings should note the torque requirement for the closure bolts and any other threaded devices that are part of the containment boundary.
Torque requirements for the secondary lid cl osure bolts (120 + _10 f t.-lbs. ) and rimary lid ratchet binders (175-200 ft.-lbs. ) have been added to Drawin ~ No. C-110-D-0016, Rev. C.
4.
Clarify the status of Drawing C-110-D-0006, Rev.
B.
It is not clear that Drawing No. C-110-D-0006 is showing optional features when all of the features shown are required by Drawing No. C-110-D-0017.
Drawing No. C-110-D-0006, Rev. B, has been deleted and is not included in Revision 1 of the application.
5.
The packaging drawings are not consistent in the dimensioning of the shield thickness and the outside diameter of the cask.
It is noted that both drawings (C-110-D-0017 and C-110-D-0006) are stamped "As Built".
Drawing No.
C-110-D-0017 has been revised to correct these inconsistencies and to be in agreement with the Chem-Nuclear Supplement dated November 16, 1982.
6.
The minimum yield strength of the plate material for Item No. 4, Drawing No. C-110-D-0017, Sheet 1, Rev. A, should be 49,000 psi.
Page No. 2 of CNSI Document No. 9151-S1 should also be corrected.
The value for minimum yield strength (46,000 psi) shown on Drawing No.
C-110-0-0017, Sheet 1, Rev.
A, is correct and in agreement with the Certificate of Compliance No. 9151, Revision 8.
This value is supported by Chem-Nuclear Systems, Inc. Supplement dated Hovember 16, 1982.
71 -91 51, 9 /86 Page 2 of 3
r Operating Procedures The instruction regarding the tightening of the ratchet binders should be stated in terms of foot-pounds of torque.
The procedures should also require a check of the cavity drain line to determine that the drain plug has been properly installed using an appropriate pipe thread sealant.
Steps 3.1.12, 3.2.10 and 3.3.9 have been revised to reflect tightening the ratchet binders to the required torque values.
Step 3.3.14 has been added which requires an inspection of the drain plug installation.
Acceptance Test and Maintenance Program Paragraph 4.1.4 should specify an acceptance criteria.
Paragraph 4.1.4 has been revised to show an acceptance criteria of no visible bubbles for the Seal Integrity Test.
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71 -91 51, 9/86 Page 3 of 3 l