ML23060A262

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National Institute of Standards and Technology (Nist), Reply to Request for Supplemental Information - 2022 Triennial Update to Decommissioning Funding Plan
ML23060A262
Person / Time
Site: 07000398
Issue date: 01/24/2023
From: Mackey E
US Dept of Commerce, National Institute of Standards & Technology (NIST)
To: Osiris Siurano-Perez
Document Control Desk, NRC/NMSS/DFM/FFLB
References
TAC L32643
Download: ML23060A262 (1)


Text

UNITED STATES DEPARTMENT OF COMMERCE National Institute of Standards and Technology Gaithersburg, Maryland 20899 January 24, 2023 U.S . Nuclear Regulatory Commission License No . SNM-362 ATTN: Document Control Desk Docket # 70-398 Washington, DC 20555-0001 TAC No. L32643 Mr. Osiris Siurano-Perez Project Manager, Fuel Facil ity Licensing Branch Division of Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

REPLY TO REQUEST FOR SUPPLEMENTAL INFORMATION - 2022 TRIENNIAL UPDATE TO DECOMMISSIONING FUNDING PLAN

Dear Mr. Siurano-Perez,

The National Institute of Standards and Technology (NIST) intends to provide information to be used by NRC staff to complete the acceptance review ofNIST's September 27, 2022, submittal associated with the triennial update to the Decommissioning Funding Plan of the SNM-362 license. The attached response to the Request for Supplemental Information (ML22348Al 71) further clarifies the key assumptions contained in the Decommissioning Cost Estimate for the laboratories added in the H-wing of building 245 in the Gaithersburg Campus as part of a major modernization project. NIST has engaged in a procurement effort to have a new Decommissioning Cost Estimate completed in Apri l 2023 which we intend to share with NRC as soon as it is completed.

Thank you for your attention to this letter and the attached response. If you have further questions about this response, please contact the NIST Gaithersburg Radiation Safety Officer, Mr. Manuel Mejias at 301-975-5800 or manny.mejias@nist.gov.

Sincerely, Digitally signed by ELIZABETH ELIZABETH MACKEY MACKEY Date: 2023.01.24 11 :02:23 -05'00' El.izabeth A. Mackey, Ph.D.

Chief Safety Officer National Institute of Standards and Techno logy N 15 I rSTANDARDS NATIONAL INSTITUTE OF AND TECHNOLOGY U.S. DEPARTMENT OF COMMERCE

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II Enclosure DFP RSI Response cc: E. A. Mackey, \UST Chief Safety Officer A. K. Thompson, NIST IRSC Chair M. Mejias, NIST Radiation Safety Officer

NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY SPECIAL NUCLEAR MATERIAL LICENSE SNM-362, (DOCKET NO. 70-0398)

RESPONSE TO REQUEST FOR SUPPLEMENTAL INFORMATION DECOMMISSIONING FUNDING PLAN UPDATE

Background

On December 17, 2022, NIST was asked to provide supplemental technical information for NRC staff to complete the acceptance review of the 2022 triennial update to its Decommissioning Funding Plan for the SNM-362 license (ML22293A269). This DFP update was submitted by NIST to satisfy the requirements in Title 10 of the Code of Federal Regulations (10 CFR) Paragraph 70.25(e) on September 27, 2022.

Requested Information In the Request for Supplemental Information.(RSI), NIST was asked to provide updated cost estimate details spreadsheets (Appendix B of the 2022 submittal). The information is provided via the table below indicating the MARS SIM classification and floor area of each new laboratory added in the H-wing of building 245.

Building Room Facility MARSSIM Floor Area Description Class (ft2) 245 H247- Samples drying~ 2, 109 2 ashing, and fusion. Labware storage and cleaning.

245 H247- Radioanalytical 2 822 1 work for radionuclides separations from low-level radioactivity

, samples, and source preparation for radioactivity measurements 245 H247 Transitional 3 165 space to separate the cleanroom space from the corridor and I

gowning room.

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245 H237- Sample 3 111 6 weighing 245 H237- Trace & ultra 3 248 5 trace environmental sample preparation 245 H237- Access and 3 95 4 transportation of samples to/from Class 100 cleanroom. No sources to be used or stored in this area.

245 H237- Sample 3 698 3 preparation including dilution, dissolution, and purification/

chemical separations 245 H237- Access to Class 3 109 2 10,000 cleanroom.

Sources will be transported through this area but no work will be performed here 245 H237- Analysis of 2 1233 1 radionuclides and stable nuclides in samples prepared elsewhere by mass spectrometry, micro-XRF 245 H237 Mass Spec 3 113 Vestibule 2

245 H233 Performance 1 638 testing, materials preparation, homogenization, and dilutions 245 H229 Perparation of 1 440 radioactive

/

solutions with dilutions and dispensing, .

preparation of counting sources,and storage 245. H227 Source 1 275 preparation, dilution, and storage 245 H225 Long-term 2 271 storage of radioactive materials and general group use 245 H223 Measure sources 2 344 in ion chambers 245 H221 Counting lab for 2 160 Source Users to perform post-experimental contamination checks 245 H220 Solid alpha and 2 472 beta emitting sources are measured using several detectors including gas proportional counters 245 H219 Location to 2 157 facilitate the decontamination of equipment and personnel 3

245 H218- Unsealed source 1 332 2 work, dispensing, weighing, drying, sealing, includes fume hood, some storage of sources.

Connects to H218-1 245 H218- Unsealed source 1 318 1 work, dispensing, weighing, drying, sealing, includes fume hood, some storage of sources.

Connects to H218-2 245 H217 Packaging of 2 236 high-level radioactive sources 245 H215 Source 1 552 measurement by liquid scintillation 245 H214 Source 2 624 preparation, dilution, dispensing, and storage 245 H210 Medium level r 220 radiochemistry laboratory 245 H208 Source chemical 1 438 separation for analysis and certification, source (reference material) preparation and 4

dilution, and chemical and source (limited) storage 245 H204 Source 1 432 preparation, minor chemical operations 245 H120 Measurement of 1 462 RAM samples for quantitative and/or qualitative information 245 Hll9- Detector testing 2 2348 3 and calibration using radioactive sources 245 Hll9- Equipment and 2 51 2 temporary source storage 245 Hll9- Equipment 2 136 1 storage 245 Hll5- Brachy seed 3 272 1 WAFAC-calibration and HPGE spectrum measurements 245 Hll5 Calibration of 3 736 low dose rate brachytherapy sources 245 Hll4 Location of 3 209 portable instruments, issuance, and dosimetry issuance 245 Hll3- Processing and 2 258 4 sampling of incoming and outgoing packages 5

245 H113- Shielded storage 2 273 3 location for low level RAM sources 245 H113- Shielded storage 2 376 2 location for high level RAM sources.

245 H113- Temporary 2 273 1 storage location for incoming and outgoing RAM packages 245 H113 Facility for the 2 538 manipulation of large items and counting samples from mcommg packages.

245 H108- Source storage 2 12 2 prior to use in experimental side 245 H108- Calibration of 2 355 1 high dose rate brachytherapy sources 245 H104 Processing and 1 493 preparation of RAM samples, typically prior to counting 245 H031- Liquid lab hold- 1 595 1 up tanks that are tested for radioactivity prior to release to sanitary sewer 245 H018 High Dose 2 229 Irradiations 245 H015 Calibration of 1 383 Beta-emitting sources and 6

extrapolation chambers 245 H007- Calibration of 2 858 I gamma-ray

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measurmg instruments 245 H007 Control Room 2 442 For G150 Gamma Beam Facility -

. Calibration of instruments 245 B157 Packaging and I 450 Storage of RAM waste for shipments 245 Bl56 Storage of I 480 liquid RAM waste 245 B155 Storage Closet I 70 used for RAM waste 245 B152 Storage of RAM, I 480 waste-DSW 245 B146 Processing of I 273 RAM waste 245 B145 Storage of high I 288 level RAM waste 245 B119 Measurement of I 200 photon emitting sources usmg gamma-ray spectrometry Update to the Decommissioning Cost Estimate in preparation for license renewal NIST has engaged in a procurement effort to update the basis for its DCE and expects the final report to be available in May 2023. This report will provide updated key assumptions contained in the DCE in preparation for the SNM-362 license renewal. It may be mutually beneficial to review the new DCE report in May which will reassess the technical basis for the first time since 2009.

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