ML20304A395
| ML20304A395 | |
| Person / Time | |
|---|---|
| Site: | 07109792 |
| Issue date: | 10/13/2020 |
| From: | Pratt R US Dept of Energy, National Nuclear Security Admin, US Dept of Energy, Naval Reactors |
| To: | John Lubinski Office of Nuclear Material Safety and Safeguards |
| Allen W | |
| References | |
| G#C20-04104 | |
| Download: ML20304A395 (8) | |
Text
GONFIDENTIAL RESIRICTEO DATA =-
DEPARTMENT OF ENl!RGY NATIONAL NUCLEAR SECURITY ADMINISTRATION 1000 INDEPENDl!NCI! AVENUE SW WASHINGTON DC 20686-1000 NR:RR:VLGurung G#C20-04104 October 13, 2020 Unclassified upon removal of Enclosure (1)
John Lubinski Director, Office of Nuclear Material Safety and Safeguards Nuclear Regulatory Commission Washington, DC 20555 MODEL 1 O1G CORE BASKET THERMAL SHIELD SHIPPING AND STORAGE CONTAINER - SAFETY ANALYSIS REPORT FOR PACKAGING TO SUPPORT DISPOSAL SHIPMENT OF 02W CORE BARREL; REQUEST FOR NUCLEAR REGULATORY COMMISSION REVIEW AND CONCURRENCE (U)
Background:
The Model 1 01 G Core Basket - Thermal Shield Shipping and Storage Container (herein referred to as the Model 1 container) is a single-use container originally designed to transport O1G core basket thermal shield assemblies to a low-level radioactive waste facility for disposal. The Model 1 container consists of a steel-wrapped, concrete outer vessel and a steel inner vessel that is welded closed. The cargo consists of a large, non-fissile, irradiated core basket.
The Navy recently identified that seven LOS ANGELES class submarines are planned to be refueled with O2W power units. Following spent fuel removal, the O2W core barrel is required to be removed from the reactor vessel to support installation of a O2W power unit. Existing Model 1 containers will be used to ship O2W core barrels to the disposal site. The first 02W refueling is currently scheduled to begin in early 2022.
Discussion: Enclosure (1) contains an addendum to the original Safety Analysis Report for Packaging (SARP) for shipment of O2W core barrels in the Model 1 container.
Naval Reactors considers the Enclosure (1) SARP addendum demonstrates package compliance with requirements of 10CFR71. The overall characteristics of the Model 1 container have not significantly changed with the exception of minor modifications to fit the O2W cargo. The SARP addendum demonstrates that the package containment boundary integrity is not compromised during normal conditions of transport nor hypothetical accident conditions.
CONFIDENTIAL RESTRICTED DATA
UNCLASSIFIED 2 NR:RR:VLGurung G#C20-04104 Request for Action: The NRC is requested to review and concur to the D2W core barrel in the Model 1 shipping container SARP addendum, transmitted via Enclosure (1) of this letter. Enclosure (2) provides, for information, the draft revision to the Department of Energy (DOE) Certificate of Compliance (CoC) for the Model 1 shipping container. Enclosure (3) transmits SARP addendum Reference A.9-1. To support use of the Model 1 container during the first planned D2W refueling, Naval Reactors appreciates receiving any initial comments on the SARP by September 2021 . Final concurrence by December 2021 would be greatly appreciated. If you have any questions, please do not hesitate to call me at (202) 781-6712.
PRATT.ROY.GIL Digitallysignedby PRATT.ROY.GILBERT.II1.11 BERT.1I1. 110705 07053570 Date: 2020.10.1315:25 :09 3570 -04'00' R. G. Pratt Naval Reactors
Enclosure:
(1) D2W CORE BARREL IN THE D1 G CORE BASKET - THERMAL SHIELD SHIPPING AND STORAGE CONTAINER SAFETY ANALYSIS REPORT FOR PACKAGING ADDENDUM (2) DOE-NR CERTIFICATE OF COMPLIANCE FOR THE O2W CORE BARREL IN THE O1G CORE BASKET - THERMAL SHIELD SHIPPING AND STORAGE CONTAINER, USA/9792/B(U) REVISION 11 (DRAFT)
(3) NNPP QUALITY ASSURANCE PROGRAM - BACKGROUND, EVALUATION, AND ANALYSIS REPORT (BEAR) 19 Copy to (next page).
UNCLASSIFIED
UNCLASSIFIED 3 NR:RR:VLGurung G#C20-04104 Copy to (* = without Enclosure (1) and (3)):
KAPL ADSARS*
A. Kock, Director, Division of Fuel Management, Office of Nuclear Materials Safety and Safeguards, NRC*
J. McKirgan, Chief, Storage and Transportation Licensing Branch, DFM, NMSS, NRC*
C. Allen, Senior Project Manager, STLB, DFM, NMSS, NRC G. Lubinsky, General Manager, NNL*
V. Pantloni, Manager, Reactor Servicing, NNL*
M. Drewen, Manager, Reactor Servicing Systems, RS, NNL*
S. Fiscus, Manager, Shipping Containers, RSS, RS, NNL*
C. Haslett, Manager, Shipping Container Analysis, SC, RSS, RS, NNL*
S. Ciez, SCA, SC, RSS, RS, NNL*
T. Clark, SCA, SC, RSS, RS, NNL*
NRLFO*
UNCLASSIFIED
ENCLOSURE (2)
DOE-NR CERTIFICATE OF COMPLIANCE FOR THE D2W CORE BARREL IN THE D1G CORE BASKET - THERMAL SHIELD SHIPPING AND STORAGE CONTAINER, USA/9792/B(U)
REVISION 11 (DRAFT)
The enclosed proposed Certificate of Compliance shows additions and deletions from the current version of the certificate. Minor formatting and editorial changes are not highlighted .
Enclosure (2) to Ser 08G#C20-04104
U S DEPARTMENT OF ENERGY DO E F 5822 1 (5-85) CERTIFICATE OF COMPLIANCE 0 MB Ap prova l (Formerly EV-61 8) For Rad ioactive Materials Packages No . 1910-2000 1a. Certificate Number 1b. Revision No. 1c. Package Identification No . 1d. Page No . 1e. Total No. Pages USA/9792/B(U) DOE-NR 11 (Draft)-W USA/9792/B(U) (DOE-NR) 1 2
- 2. PREAMBLE 2a . This certificate is issued under the authority of 49CFR Part 173.7(d).
2b . The packaging and contents described in item 5 below, meets the safety standards set forth in subpart E, "Package Approval Standards" and subpart F, "Package, Special Form , and LSA-111Tests" Title 10, Code of Federal Regulations , Part 71 .
2c. This certificate does not relieve the cons ignor from compl iance with any requirement of the regulations of the U.S. Department of Transportation or other applicable regulatory agencies, including the government of any country through or into wh ich the package will be trans orted .
- 3. This certificate is issued on the basis of a safety analysis report of the package design or application (1) Prepared by (Name and address) : (2) Title and Identification of report or application : (3) Date Naval Nuclear Laboratory Safety Analysis Report for Packaging an October 1987 P. 0 . Box 79 Irradiated D1G Type Core Basket West Mifflin, PA 15122-0079 Thermal Shield Assembly in the Model 1 D1G Core Basket-Thermal Shield Shipping and Storage Container Safety Analysis Report for Packaging
- 4. CONDITIONS Th is certificate is conditional upon the fulfilling of the applicable Operational and Quality Assurance requirements of 49CFR Parts 100-199 and 10CFR Part 71 , and the conditions specified in item 5 below.
- 5. Description of Packaging and Authorized Contents, Model Number, Transport Index for Criticality Control, Other Conditions, and
References:
Model: Model 1 D1G Core Basket -Thermal Shield Shipping and Storage Container
- a. Description of Packaging The Model 1 D1G Core Basket-Thermal Shield (CB-TS) Shipping and Storage Container is a right circular cylinder 115 inches in diameter and 209 inches long (D1 G design including impact limiter assembly) or 216 inches long (D2W design including impact limiter assembly) . Access for loading is provided by a removable closure head. The container, consisting of the cylindrical side walls and the bottom end, has a three-layer construction with a steel inner vessel approximately 8 inches thick covered with approximately 9 inches of reinforced concrete which is encased by a 3/8-inch-thick stainless steel outer shell. The core barrel assemblyCB TS is secured in place inside the container by a steel preload ring that is bolted to the inner vessel with 72 high strength bolts.
Closure of the containment vessel is provided by a steel closure head that is bolted to the inner vessel with 72 high strength bolts. A steel closure ring is installed over the bolts and is welded to the inner vessel and closure head to provide containment.
6a. Date of Issuance: 6b . Expiration Date: Janua 31 , 2023 FOR THE U.S. DEPARTMENT OF ENERGY 7a. Address (of DOE Issuing Office) 7b. Signature, Name and Title (of DOE Approving Official)
Naval Reactors U. S. Department of Energy S. J . TrautmanC . W. Taylor Washington, D. C. 20585 Deputy Director, Naval Reactors
Certificate of Compliance USA/9792/B(U) (0OE-NR)
- 5. (Continued) Revi sion 11 (Draft)4-0 An inner impact limiter and an outer impact limiter are attached to the container. The steel inner impact limiter is welded to the top end of the closure ring . The wooden outer impact limiter is bolted to the top plate of the container outer shell.
For land transport, tihe shipping container is transported with its axis horizontal and is supported by a shipping skid or trunnion. For sea transport, the shipping container is transported with its axis vertical and is supported by a shipping frame assembly. The weight of a loaded container ranges from approximately 1sia-1/2 tons to 185 tons .
- b. Authorized Contents One 0 2W core barrel assembly (includes inner thermal shield, outer thermal shield, removal cover, tie bolts)1G CB TS containing up to one core's worth of 01G support assemblies, 01G lower control rod drive mechanisms, 01 G upper support assemblies and some residual water (estimated to be about 3.635 gallons). The core barrel and thermal shieldssomponents _are irradiated and the associated surfaces are contaminated with activated corrosion products .
- c. Criticality Safety Index Not Applicable.
- d. Other Conditions (Restrictions)
(1) Preloading of closure heads and preload rings and sealing the container must be done with an ambient temperature between +40°F and +100°F.
(12) Shipment shall be made when the historical a*.ierage daily temperature is abo*.ie The package shall not be shipped unless the daily minimum temperature expected during shipment of the package as determined on the basis of weather forecasts is greater than or equal to the Lowest Service Temperature (+10°F}.
(2) The 0 2W core barrel assembly1 G CB TS shipments shall be made no sooner than 136W days after shutdown of the reactor.
(3) Shipments shall be completed within 1,444 days of completion of closure ring welding to prevent excessive hydrogen buildup.
- e. References None.
- f. Additional Information The Nuclear Regulatory Commission in memorandum SGTB:RHO 71-9792 dated October 13, 1987, concurred that shipment of the 01G prototype Core Basket-Thermal Shield in the Model 1 01G Core Basket-Thermal Shield Shipping Container complied with the requirements of 10CFR71 .
The Nuclear Regulatory Commission in memorandum SGTB:NLO 71-9792 dated August 9, 1991, concurred that the shipment of one 01 G shipboard Core Basket-Thermal Shield assembly and associated irradiated components in the Model 1 01 G Core Basket-Thermal Shield Shipping Container complies with the requirements of 10CFR71.
Certificate of Compliance USA/9792/B(U) (DOE-NR)
- 5. (Continued) Revision 11 (Draft).:W The Nuclear Regulatory Commission in memorandum Docket #71-9792 dated October 19, 1995, concurred that the shipment of one 01G shipboard Core Basket-Thermal Shield assembly and associated irrad iated components in the redesigned Model 1 01 G Core Basket-Thermal Shield Shipping Container complies with the requirements of 10CFR71 .
Nuclear Regulatory Commission concurrence 'Nith renewal of this Certificate of Compliance is contained in their memorandum dated January 5, 2018.
The Nuclear Regulatory Commission, in memorandum TBD dated TBD, concurred that the shipment of one 02W Core Barrel Assembly and associated removal cover assembly in the modified, redesigned Model 1 01G Core Basket-Thermal Shield Shipping Container complies with the requirements of 10CFR71 .
ENCLOSURE (3)
NNPP QUALITY ASSURANCE PROGRAM BACKGROUND, EVALUATION, AND ANALYSIS REPORT (BEAR) 19 NR internal distribution: See NNL letter B-QSA(QP)-111 dated September 11, 2008 for a full copy of Enclosure (3) submitted for NR approval and NR letter S#08-03565 dated September 15, 2008 for the NR approval letter.
Enclosure (3) to Ser 08G#C20-04104