ML21039A763

NRC Staff Presentation for February 11, 2021 Public Meeting on Uniform Waste Manifest

ML21039A763
Person / Time
Issue date:	02/11/2021
From:	Priya Yadav Division of Decommissioning, Uranium Recovery and Waste Programs
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Yadav P
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Download: ML21039A763 (37)

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Implementation of NUREG/BR-0204, Revision 3, and Uniform Waste Manifest Forms February 11, 2021 Thank you for joining us! The meeting will start shortly.

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1-415-527-5035 - access code 199 828 6462 If you are on the phone only, press *3 to raise your hand to speak Slides are available in the NRCs ADAMS at ML21039A763 and attached to NRC meeting notice

Opening Remarks Patricia Holahan, Ph.D Director Division of Decommissioning, Uranium Recovery, And Waste Programs Office of Nuclear Material Safety and Safeguards

Agenda Topic Speaker Introduction/Logistics Priya Yadav Opening Remarks Patricia Holahan, Ph.D.

Background and Summary of Priya Yadav Changes Implementing Guidance in Karen Pinkston, Ph. D NUREG/BR-0204 Next Steps Stephen Koenick Public Input All Closing Remarks Stephen Koenick 4

Purpose of Meeting Seek public input on the status of implementation of the changes to the Uniform Waste Manifest (UWM) Forms Summarize Changes and Clarifications to the UWM Forms and Instructions Guidance Rev 3 (6/2020) vs Rev 2 (1998)

Provide examples and answer questions Collect Frequently Asked Questions (FAQs) to post answers to on the NRC website 5

Background - Why did we revise the Instructions???

• SECY-13-0001, "Staff Recommendations for Improving the Integration of the Ongoing 10 CFR Part 61 Rulemaking Initiatives" (ML12199A412)

- NRC staff noted stakeholders' suggestion that NUREG/BR-0204 be rewritten and that assumptions concerning the reporting of certain hard-to-detect isotopes (i.e., H-3, C-14, Tc-99 and I-129) on the UWM be revisited

• Two public workshops, in March and June of 2013, to collect comments specifically on NUREG/BR-0204 and the associated UWM forms

• Issued RIS-2015-02 on the use of indirect methods (ML14272A217) 6

Background - Timeline of Revision Process Draft NUREG/ Issued final in BR-0204, Revision 3 Staff analyzed June 2020 with Collected public and associated UWM 90-day comments for comments forms published in implementation 90 days the Federal Register (ML19214A186) on October 30, 2018 (ML20178A433) 7

Current Status Received several industry requests for extension to implement new forms September 14, 2020, announced delay (ML20268C223)

Informal discussions: received questions about implementing the guidance Today: Receive update on the status of forms implementation and answer questions Not making revisions to NUREG/BR-0204, Rev 3 8

What are the changes to the Forms described by NUREG/BR-0204, Rev 3?

• NRC Form 540/540A

- Revised certification statement

- Deleted column 17 on Form 540 (duplicate request for LSA/SCO class)1

• NRC Form 541/541A

- Additional column for waste weight on Form 541

• NRC Form 542/542A

- Minor formatting changes (applies to all forms) 1 Low Specific Activity/Surface Contaminated Object 9

Do I need to use the NRC version of the UWM Forms?

• Waste shippers may use the NRC UWM Forms located in the Forms Library https://www.nrc.gov/reading-rm/doc-collections/forms/index.html

• Unless.

- Shipping to a disposal or processing facility that is located in an Agreement State

- Check with the recipient disposal facility to get the Agreement State regulator approved forms 10

What if I am shipping to an Agreement State?

• Agreement States

- Maintain a program that is adequate to protect public health and safety, and the environment, and is compatible with the NRCs program

• TX, UT, WA, and SC all have Agreement State programs

- Adopt 10 CFR Part 20, Appendix G, but have flexibility with the UWM Forms 11

Agreement State Forms Agreement State UWM forms should be equivalent to the NRC forms in respect to content, clarity, size, and location of information Agreement State UWM forms should not be labeled NRC Form 540 (541, or 542) 12

What if I want to use the NRC Forms?

• NRC must comply with the Paperwork Reduction Act (PRA)

- Renew UWM forms clearance every 3 years

- Reflect OMB clearance number and expiration date

- All information requests from federal agencies must have an OMB clearance/approval

• So

• Shippers may use NRC forms as they appear on the NRC website 13

Paperwork Reduction Act (PRA)

OMB Clearance Number PRA Statement Expiration Date NRC Form Number and date 14

What are the changes in NUREG/BR-0204, Revision 3?

• Changes to correspond with revisions to UWM forms

• Updated references to current U.S. Department of Transportation (DOT) regulations

• Clarified the intent of the certification statement on Form 540

• Improved clarity (Guidance vs regulation)

• Additional discussion:

- Reporting of inventories based on lower limit of detection (LLD) values

- The potential use of indirect methods to determine these inventories (e.g., scaling factors)

- The use of indirect methods in waste classification calculations 15

Data Markings or Flags Table 1 Examples for Reporting a 10,000-MBq Activity on the UWM Forms Scaling factors Scaling factors +

LLDs Actual, Scaling factors + LLDs

• In this example, half of the reported activity is based on LLD values and half is based on indirect methods (such as scaling factors).

• • In this example, half of the reported inventory is based on actual measurements, a quarter of the inventory is based on LLD values, and a quarter is based on indirect methods.

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Data Marking Example Enter 0.0008# if using scaling factors 17

Are shippers required to use the new guidance on marking inventory?

• Using the Data Flags is guidance and not required by regulation

- Staff included these flags in attempt to respond to public comments that it would be useful to reduce uncertainty in the reporting of hard-to-detects

- Flagging data could add transparency and provide the disposal facilities with better information to support inventory estimates

- Check with the recipient disposal facility to get the Agreement State regulator requirements for flagging data 18

Why should I use the flags to mark inventory?

• Using Data flags could assist the disposal facility reduce uncertainty in compliance dose estimates and increase disposal capacity

• Total inventory is a key parameter in the estimation of dose

• How to handle < LLD values in the disposal facility inventory is challenging

- Generally not acceptable to assume an activity of 0 for radionuclides present at <LLD without a basis

- Assuming the radionuclide is present at the LLD could overestimate the dose

- See NUREG-2175, Draft Guidance for Conducting Technical Analyses for 10 CFR Part 61 (ML14357A072) 19

What is the status of generic scaling factors? (1 of 2)

• NRC has not endorsed the use of any generic scaling factors

• Licensees can use scaling factors, to determine the concentrations of radionuclides in waste

- Generic or site-specific scaling factors

- if there is reasonable assurance that the indirect methods can be correlated with actual measurements (10 CFR 61.55(a)(8))

• RIS 2015-02 provides guidance on the use of indirect methods and scaling factors 20

What is the status of generic scaling factors? (2 of 2)

• EPRI submitted the report, Development of Generic Scaling Factors for Tc-99 and I-129 in Low and Intermediate Level Waste to the NRC for review

- On March 1, 2019 NRC sent an RAI to EPRI on the submitted report

- EPRI requested for the NRC to suspend its review

- The NRC review will remain suspended unless EPRI requests staff to continue the review and provides a response to the RAI

• Licensees that use generic scaling factors should:

- Demonstrate whether the generic information is applicable to their waste streams

- Periodically evaluate if the generic scaling factors remain appropriate 21

What is considered to be a significant radionuclide?

• Significant radionuclides should be reported on the UWM and included in the waste class calculation

• A radionuclide is significant if:

- RN concentration > 0.01 x Table 1 of 10 CFR 61.55, or

- RN concentration > 0.01 x the smallest concentration in Table 2 of 10 CFR 61.55, or

- RN concentration > 0.01 x the receiving disposal facility Waste Acceptance Criteria (WAC), or

- the radionuclide is not listed in either the 10 CFR 61.55 tables or a land disposal facility WAC, and it is present in the waste in concentrations > 0.26 MBq per cm3 22

Does a significant radionuclide that is <LLD have to be included in the calculation of the waste class? (1 of 4)

• The NRC 1983 BTP on Waste Classification (ML033630755):

- LLDs for radionuclides identified in 10 CFR 61.55 should be

• < 0.01 x the Table 1 value or

• < 0.01 x the lowest Table 2 value for that radionuclide

- The thresholds used to identify radionuclides that are significant for the purposes of waste classification are the same as the LLD thresholds

- Radionuclides that are significant for the purposes of waste classification should be included in the waste classification calculations 23

Does a significant radionuclide that is <LLD have to be included in the calculation of the waste class? (2 of 4)

• If LLD values > 1983 guidance levels, then the radionuclide may be significant for classification

• The licensee may

1) Assume the radionuclide is present at the <LLD value achieved by the laboratory and include it in the waste classification calculation at that concentration;

2) Improve the analysis capability such as to meet the LLD value in the 1983 BTP guidance; or

3) Justify using an indirect method to quantify the radionuclide concentration and include that calculated value in the waste classification calculation 24

Does a significant radionuclide that is <LLD have to be included in the calculation of the waste class? (3 of 4)

• For radionuclide concentrations below the 1983 BTP LLD guidance values:

- For § 61.55 Table 2 radionuclides:

• Threshold recommended = 1% of the Class A value

• Even if several radionuclides were present at that level, they would be unlikely to change the waste classification

- For § 61.55 Table 1 radionuclides:

• Threshold recommended = 1% of the Class C concentration

• Threshold recommended = 10% of the Class A concentration

• If several radionuclides were present less than that LLD threshold for Class A waste, but present in the waste (e.g., each at 9% of the Class A limit), excluding those radionuclides theoretically could have a more significant impact on the waste classification. However, practically, NRC staff does not expect all of the Table 1 radionuclides to be present at those concentrations.

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Does a significant radionuclide that is <LLD have to be included in the calculation of the waste class? (4 of 4)

• Including LLDs in a scaling factor could lead to uncertainty of whether the radionuclide is significant

- Additional analysis to determine if the radionuclide is present may be needed

• Waste needs to be characterized well enough to understand the waste class -

- If including or excluding the < LLD values could change the waste class, then additional characterization may be warranted

- Generator is responsible for ensuring the information is correct 26

Example: Classification Calculation (1 of 4)

Hypothetical measured concentrations in a waste sample:

Measured LLD in 1983 Class A Limit Concentration BTP Guidance SOF (Ci/m3)

(µCi/cm3) (Ci/m3)

Cs-137 0.02 0.01 1 0.02 I-129 <0.0008 0.0008 0.008 0.1

• LLD for Cs-137 and I-129 are consistent with 1983 BTP guidance

• Waste is Class A

• Scaling factor calculated based on this sample (assuming I-129 present at LLD):

Scaling factor = I-129 / Cs-137 = 0.0008 / 0.02 = 0.04 27

Example: Classification Calculation (2 of 4)

Hypothetical reported concentrations in a second waste sample:

• Cs-137 is directly measured

• I-129 was scaled using the scaling factor and the Cs-137 concentration (0.04

• 0.5)

LLD in 1983 Concentration Class A Limit BTP Guidance SOF

(µCi/cm3) 3 (Ci/m3)

(Ci/m )

Cs-137 0.5 0.01 1 0.5 I-129 <0.02# 0.0008 0.008 2.5

• LLD for Cs-137 is consistent with 1983 BTP guidance, but the I-129 upper bound concentration projected based on the scaling factor is not

• It is unclear if waste is Class A, and additional analysis to determine the concentration of I-129 may be needed 28

Example: Classification Calculation (3 of 4)

• The calculation indicates that the waste is Class C, but the I-129 concentration is not well understood and is likely much lower than assumed

• The waste shipper could:

- Analyze a sample of the waste for I-129 and use result to calculate waste class

- Develop a more accurate scaling factor for their waste streams

- Use a different indirect method to better estimate the I-129 concentration 29

Example: Classification Calculation (4 of 4)

• To avoid this problem, waste shippers should be careful when developing scaling factors from samples with LLD values

- Analyze the sample for longer count times to achieve a lower LLD

- Use hotter samples as a basis for scaling factors, if practical (e.g., if there is not an unacceptable worker dose)

• Waste needs to be characterized well enough to understand the waste class 30

Next Steps FAQs NRC will post examples and FAQs on UWM website https://www.nrc.gov/waste/llw-disposal/llw-pa/llw-uwm.html NRC will complete OMB clearance on FORMS with OMB the target date of June 1, 2021 NRC will notice the forms in Federal Register Notice FRN with 90-day implementation period, effective September 1, 2021 NRC Form users should transition to the revised Transition forms and continue implementing the guidance in NUREG/BR-0204 Generators should consult with specific disposal facilities for Agreement State specific requirements 31

Public Input Would you be ready to implement the forms by June 1, 2021, with a 90-day implementation period?

Are there specific questions you would like to see answers to on the NRC website as FAQs?

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Implementation of NUREG/BR-0204, Revision 3, and Uniform Waste Manifest Forms This is a WebEx Event - you will not be able to unmute yourself during the meeting.

To be unmuted, please indicate you would like to speak by contacting the host or panelists in the chat window or raise your hand by clicking the icon shown below. The host will notify you when your line is open.

1. Find your name on the attendee list, and hover over your name. A Raise Hand icon will appear.

2. Click on the Raise Hand button which will place a small hand icon next to your name in the participant list.

You can also use the chat function to make a comment. Remember to select all panelists in the chat window

3. Click on the Lower Hand button to withdraw the request.

If you are having connection difficulties, consider calling into WebEx by phone only, using the below information:

1-415-527-5035 - access code 199 828 6462 If you are on the phone only, press *3 to raise your hand to speak Slides are available in the NRCs ADAMS at ML21039A763 and attached to NRC meeting notice

Priya Yadav, Karen Pinkston, Ph.D Project Manager Division of Division of Decommissioning, Contacts Decommissioning, Uranium Recovery and Uranium Recovery and Waste Programs Waste Programs Technical Lead 301-415-6667 301-415-3650 Priya.Yadav@nrc.gov Karen.Pinkston@nrc.gov 34

Background

Information 35

Current NRC Regulations 10 CFR Part 20, Appendix G, Definitions:

NRC Forms 540, 540A, 541, 541A, 542, and 542A are official NRC Forms referenced in this appendix.

Licensees need not use originals of these NRC Forms as long as any substitute forms are equivalent to the original documentation in respect to content, clarity, size, and location of information.

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Agreement State Compatibility Categories of Regulations A B C State regulation State regulation State regulation needs to be needs to be needs to meet 10 CFR Part 20, identical essentially essential identical objective of Appendix G regulation D H&S NRC Not required Needs to meet States cannot compatibility health and safety adopt regulations objective Forms 540, 541, and 542 (and Form As) 37