ML20235S397
| ML20235S397 | |
| Person / Time | |
|---|---|
| Issue date: | 10/02/1987 |
| From: | Roberts J NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Barnhart V GENERAL NUCLEAR SYSTEMS, INC. |
| References | |
| REF-PROJ-M-37 NUDOCS 8710080479 | |
| Download: ML20235S397 (4) | |
Text
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Project M-37 General Nuclear Systems, Inc.
ATTN: Victor J. Barnhart, President 220 Stoneridge Drive Columbia, SC 29210
Dear Mr. Barnhart:
This is in response to letters dated June 16, 1987, and August 3, 1987, from P. Paquin of General Nuclear Systems, Inc., (C 451) to me notifying NRC of material deviations in fuel baskets being fabricated for the model CASTOR V/21 cask (for casks serial numbers 009 and 008, respectively).
These deviations have been investigated by the Bundesanstalt f[ir Material-forschung und-prUfung (BAM), an agency of the Federal Republic of Germany (FRG), which by formal agreement with the NRC acts as an agent of the NRC in quality assurance actions regarding fabrications of CASTOR V/21 casks in the FRG. The root cause of these occurrences, as determined by BAM, and corrective actions to prevent recurrence are specified in a letter dated July 20, 1987, from Dr. Ing. B. Gunther of BAM to Gesellschaft fur Nuklear Service mbh, the FRG partner in GNSI (see enclosed letter). We request that GNSI commit in writing to NRC to take these corrective actions, stated in Section 4. Recommendations, of Dr. Gunther's letter.
With respect of the two fuel baskets with material deviations (for CASTOR V/21 casks serial numbers 008 and 009), BAM has recommended acceptance of the basket material as it is. NRC staff has independently reviewed this issue and verified that such use does not compromise safety.
Therefore, we conclude that continued fabrication of these two baskets and their use in CASTOR V/21 casks is acceptable.
Sincerely, yiffmpt sich.tv ry:
John P. Roberts, Section Leader Irradiated Fuel Section e7100B0479 071002 Fuel Cycle Safety Branch PDR PROJ pga Division of Industrial and ti-37 Medical Nuclear Safety, NMSS
Enclosure:
As stated cc:
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Dertin 1.52 Wi/GU'/ Sci o3ofeio4.9021 20.07.1987 Quality Assurance / Compliance Assurance measures for CASTOR V/21 containers for use in the USA
- your deviation report No. QS87-134 l
Dear Sirs,
Prior to a final judgement of the contents of your above applica-tion we would like to express our concerns with respect to an es-sential lack of compliance with the intentions and needs of an ef-fective QA/CA-programme. The circumstances of the deviation appro-val application confirm our estimation and proposals as laid down in our letter to you (BAM-1.53/Dr.De/Gr0) dated-15.10.1986.
- l. Background Different to the US-licencing procedure, where the design of the licencing object is specified by the safety analyses report (SAR) and its supporting documents, the.FRG (transport) licencing proce-dure relies on final detailed technical ' drawings (shop drawings),
part-lists and mate' rial data / test sheets to be approved by PTB/
~ a re quot ed i.n the,ce r-BAM. As a consequence, those drawings etc.
tificates of approvals with respect to the design specification.
Any change in these documents is subject to the, approval of the competent authority.
In the US-licencing procedure final technical drawings, part-
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lists and material data / test sheet's may be produced to a later
-s t age, based upon the contents of the approved SAR with the possi-bility of differences between both.
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- 2. Findings Y
2.1 The material in concern has been tested and certified by the works expert and an independent inspector (local TOV) the sheet 06.02.1986 in acc6rdance with the materials data / test
'WB 15/la'. All data were in accordance with this specifica-tion. In so f ar, no deviation occured.
l 14.06.1983, WB 15/la 2.2 WB 15/1 had been approved by BAM datedin context with the CASTOR V de-dated 06.11.1984*),
but not (The correlation of package design and valid material sign.
is given by the manuf acturing-test-plan.) WB 15/1 data sheet SAR as an alternative is quoted in Revision 1 of the Topical to WB 15/1. However, the US HRC licenc( was first restricted to.nonborated steel baskets. The US NRC amendment, dated 03.04.1987, includes, as applied for in January 1987, borated J
steel with a percentage of 1.03 + 0.05 %<
2.3 WB 15/1 has not been adapted to the contents of the US NRC amendment dated 03.04.1987 nor approved by BAM in accordance with this amendment.
2.4ThedeviationreferstothecontentsoftheU$'NRCamendment (boron content 1.03 + 0.05 %) but not to the WB 15/la to which the testing was controlled,.
- 3. Conclusions 3.1 Comformance of relevant materials data sheets with contents of US NRC licence was not adequately controlled.
the time when only nonborated steel was licenced for US-
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3.2 AtCASTOR V baskets, the material testing and certification took place based upon WB 15/la allowing boron contents 2 0.90 %.
3.3 Apart from the first two points, manufacturing control by in-dependent expert and information of competent authorities on noncompliance worked as intended.
- 4. Recommendations to the manufacture of 4.1 Compliance of all documents, relevant materials / parts / components (drawings, material-data sheets, part-lists) should be assured in accordance with the contents of the US NRC licence. Any cha.nge/ amendment of this licence of the relevant draw-should automatically lead to a review ings, material data sheets, part-list's. (For the FRG licenced
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designs, this is done by PTB/BAM by the so called 'VorprUfung'
('Precheck').
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- ) As a byproduct this data sheet has to be adapted to the result of the latest development.
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4.2 All documents checked in accordance with the US NRC licence should bear a consequent marking (stamp), date and be signed by a responsible.
4.3 Responsible f or tiiis compliance control could be the designer (here the company GNS).
4.4 The QATR should adress the need for this compliance control.
Best regards, Laboratorium 1.52 Transportbehditer fur-radioactive Stoffe gez. Dipl.-Ing. K. Wieser nach Diktat verreist
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. ~s' Dr.-Ing. B. Gunther 0 US NRC, Mr. J. Roberts GNS, Mr. A. Bonifacio PTB, Dr. Collin BAM-1.53 I
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