ML24094A059

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Us Dept. of Transportation, Maritime Admin - Submittal of Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision
ML24094A059
Person / Time
Site: NS Savannah
Issue date: 03/27/2024
From: Koehler E
US Dept of Transportation, Maritime Admin
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
Download: ML24094A059 (12)
v • d • e


Text

U.S. Department Office of Ship Operations 1200 New Jersey Ave., SE of Transportation Washington, DC 20590

Maritime Administration

Ref: 10 CFR 50.36a

March 27, 2024

ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555

SUBJECT:

Docket No. 50-238; License No. NS-1; N.S. SAVANNAH Submittal of Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision 0

Pursuant to Technical Specifications 2.5.1 and 2.5.2, the Maritime Administration (MARAD) is required to submit an Annual Radiological Environmental Monitoring Report and an Annual Radioactive Effluent Release Report, respectively. MARAD hereby submits Revision Oto the Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports as Enclosure (1).

This submittal contains no new Regulatory Commitments.

If there are any questions or concerns with any issue discussed in this submittal, please contact me at: 0:

(202) 366:2631, M: (410) 776-8268, and/or e-niail me at erhard.koehlei@dot.gov.

Respectfully,

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Erhard W. Koehler Senior Technical Advisor, N.S. SAVANNAH Office of Ship Operations

Enclosure

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NMSS NR.~

Docket No. 50-238; License NS-1; N.S. SAVANNAH Submittal of Annual Radi~logical Environmental Monitoring and Radioactive Efflue.nt Release Reports, Revision Q March 27, 2024

Enclosure:

1. STS-226, Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports, Revision 0

2 Docket No. 50-238; License NS-1; N.S. SAVANNAH Submittal of Annual R~diological Environmental Monitoring and Radioactive E(fluent Release Reports, Revis~on 0 March 27, 2024

cc:

Electronic copy NSSESC NSS SRC

MAR 610, 612, 615

Hardcopy, cover letter only MAR-600, 640, 640.2

Hardcopy with all enclosures MAR-100, 640.2 (rf)

USNRC (Tanya Hood, Andrew Taverna)

USNRC Regional Administrator - NRC Region I MD Department of the Environment (Eva Nair)

EW.K/jmo

3 U.S. Department ' Office of Ship Operations 1200 New Jersey Ave., SE of Transportation Washington, DC 20590

Maritime Administration

Docket No. 50-238; License No. NS-1; N.S. SAVANNAH to Submittal of Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision 0 STS - 226, ANNUAL RADIOLOGICAL ENVIRONMENTAL MONITORING AND RADIOACTIVE EFFLUENT RELEASE REPORTS FOR CY2023

4 U.S. Department of Transportation Maritime Administration

N.S. SAVANNAH

ANNUAL RADIOLOGICAL ENVIRONMENTAL MONITORING AND RADIOACTIVE EFFLUENT RELEASE REPORTS FOR CY2023

STS-226 Revision 0

Approved: ~ L~/PH'"'-~- _A // _____ nu;;m.w:;e: March 27, 2023

Manager, N.S. SAVANNAH Programs Prepared by:

Nuclear Ship Support Services, LLC SA VANNAH Technical Staff STS-226, Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision 0

RECORD OF REVISIONS

Revision Summary of Revisions 0 The original version ofthc 2023 Annual Radiological Enviromncntal Monitoring and Radioactive Effluent Release Reports

LIST OF EFFECTIVE PAGES

Page No. Rev. No. Page No. Rev. No. Page No. Rev.No.

1-8 0

Revision 0 SAVANNAH Technical Staff STS-226, Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision 0

Table of Contents 1.0 Introduction 4 2.0 Items Required by Technical Specifications 4 3.0 Annual Radiological Environmental Monitoring Report 4 3.1 Direct Radiation Measuring Devices RES UL TS 5 3.2 Water and Sediment Samples Results 5 4.0 Annual Radioactive Effluent Release Report 5 4.1 Summary of Quantities of Radioactive Liquid Effluents Released 5 4.2 Summary of Quantities of Radioactive Gaseous Effluents Released 5 4.3 Summary of the Quantities of Radioactive Solid Waste Released 6 5.0 Procedure Changes Report 6 5.1 Process Control Program (PCP) Changes 6 5.2 Offsite Dose Calculation Manual (ODCM) Changes 6 6.0 References 6 APPENDIX A. CY2023 Radiological Environmental Sampling Results 7 APPENDIXB. Summary of the Quantities of Radioactive Solid Waste Released 8

Revision 0 SAVANNAH Technical Staff STS-226, Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision 0

1.0 INTRODUCTION

L This Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for

'CY2023 are submitted by the Maritime Administration (MARAD) as licensee for the Nuclear Ship SAVANNAH (NSS) and cover the Calendar Year (CY) 2023 reporting period.

In accordance with the requirements of TS 2.5 Reporting Requirements,"... the following reports shall be submitted prior to April 1 of each year in accordance with 10 CFR 50.4:

o Annual Radiological Environmental Monitoring Report.

o Annual Radioactive Effluent Release Report.

This report is arranged into four sections following the introduction. Section 2.0 lists items required to be reported by the Technical Specifications (TSs). Sections 3.0 through 5.0 report those items as described in Section 2 below.

2.0 ITEMS REQUIRED BY TECHNICAL SPECIFICATIONS The items specifically required to be included in these written annual reports are a~ follows:

a. TS 2.5.1, Annual Radiological Environmental Monitoring Report (see 3.0).
b. TS 2.5.2, Annual Radioactive Effluent Release Report (see 4.0).
c. TS 2.1.1; Changes to the Process Control Program (PCP) (see 5.1).
d. TS 2.2.1, Changes to the Offsite Dose Calculation Manual (ODCM) (see 5.2).

This report was reviewed by the Safety Review Committee at the meeting on March 13, 2023.

3.0 ANNUAL RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT Per TS 2.5.1, The Annual Radiological Environmental Monitoring Report shall include summaries, interpretations, and analyses of trends of the results of the radiological environmental monitoring program for the previous calendar year. The material provided shall be consistent with the objectives outlined in the Offsite Dose Calculation Manual (ODCM), and in 10 CFR 50, Appendix I, Section IV.B.2.

  • The Annual Radiological Environmental Monitoring Report shall include the results of analyses of all radiological environmental samples and of all environmental radiation measurements taken during the previous calendar year pursuant to the ODCM.

In the event that some individual results are not available for inclusion with the report, the report shall be submitted noting and explaining the reasons for the missing results. The missing data shall be submitted in a supplementary report as soon as possible.

Per the STS-005-020, Offsite Dose Calculation Manual (ODCM), the following two items are specifically required to be reported in the Annual Radiological Environmental Monitoring Report.

5.2.1 Direct Radiation Measuring Devices

Revision 0 SAVANNAH Technical Staff STS-226, Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision 0

Direct radiation measuring devices, such as thermo-luminescent dosimeters (TLDs), optically stimulated luminescent dosimeters (OSL) or equivalent monitoring devices, shall be placed at strategic locations throughout the vessel to monitor the radiation from reactor generated materials. MARAD shall determine these locations on the vessel and shall require dosimeter readings at least semi-annually.

5.2.2 Water and Sediment Samples Semi-annually, water samples and bottom sediment shall be taken adjacent to the ship and analyzed for principal gamma emitting radionuclides.

3.1 DIRECT RADIATION MEASURING DEVICES RESULTS Sixty-eight (68) permanently placed thermo-luminescent dosime.ter (TLD) monitoring stations are dispersed throughout the non-RCAs of the NSS and in those areas of the NSS that are routinely occupied. Fixed point radiation surveys are performed during TLD change outs. Results from the TLDs from all monitoring stations indicated that readings were insignificant as compared to the background radiation levels.

3.2 WATER A1VD SEDIMENT SAMPLES RESULTS Environmental water and sediment samples were taken adjacent to the ship at various times during the calendar year as required by TS. The environmental sample results indicate that any changes in the radiological conditions in the environment surrounding NSS are insignificant as compared to the samples taken shortly before the NSS arrived at Pier 13. Therefore; based on the results of the radiological environmental monitoring program, NSS operations at Pier 13 did not have any adverse effects on the health and safety,_Qfthe public or on the environment in 2023.

The results of the CY2023 Radiological Environmental Sampling Results are listed in Appendix A, CY2023 Radiological Environmental Sampling Results.

4.1

SUMMARY

OF QUANTITIES OF RADIOACTIVE LIQUID EFFLUENTS RELEASED No radioactive liquid effluents were released in 2023.

4.2

SUMMARY

OF QUANTITIES OF RADIOACTIVE GASEOUS EFFLUENTS RELEASED No radioactive gaseous effluents were released in 2023. The NSS has two gaseous continuous release points. The Decommissioning HV AC Systems (DHV AC-2) serves the radiological control areas (RCAs) of the ship. After filtration by high efficiency particulate air (HEPA) and monitoring by an Eberline AMS-4 particulate air monitor, the effluent is vented overboard.

When the AMS-4 alarms, the DHV AC-2 is automatically secured. There were no AMS-4 alarms in 202'.3. No radioactive gaseous effluents were released in 2023.

Revision 0 SAVANNAH Technical Staff STS-226, Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision 0

Initially installed in September 2022, an engineering control exhaust trunk is operated on the reactor hatch for localized smoke removal. When it is in use, the effluent is monitored by a continuous air sampler for both gross alpha and gross beta. No samples indicated activity above background.

4.3

SUMMARY

OF THE QUANTITIES OF RAD JOA CT/VE SOLID WASTE RELEASED See Appendix B, Summary of the Quantities of Radioactive Solid Waste Released.

5.0 PROCEDURE CHANGES REPORT 5.1 PROCESS CONTROL PROGRAM (PCP) CHANGES Per TS 2.1, The PCP shall describe the administrative and technical controls for liquid and solid radioactive waste systems management. Changes to the PCP will be outlined in the Annual Radioactive Effluent Release Report per-Section 2.5.2. This submittal shall contain:

2.1.1. Information to support the rationale for the change and the changed pages of the PCP or a statement there were no changes; -

There were no revisions to the PCP in 2023.

5.2 OFFS/TE DOSE CALCULATION MANUAL (ODCM) CHANGES Per TS 2.2, The ODCM shall contain the methodology and parameters used in the calculation of offsite doses resulting from radioactive gaseous and liquid effluents; 'in the calculation of gaseous and liquid effluent monitoring alarm and trip setpoints; and in the conduct of the radiological environmental monitoring program. Changes to the ODCM will be outlined in the Annual Radioactive Effluent Release Report per Section 2.5.2. This submittal shall contain:

2.2.1 A complete copy of the ODCM with an accompanying criteria and justification for the changes or a statement there were no changes; There were no changes to the ODCM in 2023.

6.0 REFERENCES

None

Revision 0 SAVANNAH Technical Staff STS-226, Annual Radiological Environmental Monitoriµg and Radioactive Effluent Release Reports for CY2023, Revision 0,

Appendix A CY2023 Radiological Environmental Sampling Results

APPENDIX A. CY2023 RADIOLOGICAL ENVIRONMENTAL SAMPLING RESULTS Sample Location Sample Type of Co-60

  • Cs-137 Pier #13. Canton Marine Terminal Date sample (pCi/2) foCi/1r)

Water <MDA

  • Aft of ship 6/21/2023 (minimum detectable <MDA (A) activity)

Aft of ship 6/21/2023 Sediment <MDA (A)(B) <MDA

Forward of ship 6/21/2023 Water(A) <MDA <MDA

Forward of ship 6/21/2023 Sediment <MDA <MDA (A)(B)

9.60E-08

Aft of ship 10/24/2023 Water(A) <MDA MDA=

1.50E-08

Aft of ship Sediment <MDA <MDA 10/24/2023 (A)(B)

. Forward of Ship 10/024/2023 Water(A) <MDA <MDA

Forward of Ship Sediment <MDA <MDA 10/24/2023 (A)(B)

\\

Table Data Notes (A) Calculated MDAs are a-posteriori values at the 95% confidence level.

(B) Activity is reported on a dry weight basis unless otherwise indicated in the case narrative and is decay corrected to the sample collect date.

Revision 0 SA VANNAH Technical Staff STS-226, Annual Radiological Environmental Monitoring and Radioactive Effluent Release Reports for CY2023, Revision 0 Appendix B Summary of the Quantities of Radioactive Solid Waste Released APPENDIX B.

SUMMARY

OF THE QUANTITIES OF RADIOACTIVE SOLID WASTE RELEASED

t TYPE OF WASTE NUMBER OF VOLUME(m 3) ACTIVITY OF SHIPMENTS MAJOR NUCLIDES (Ci) i Wet radioactive waste 0 0 0 i ( e.g., spent resins,

  • filters, sludges, etc.)

Dry radioactive waste 12 52.1 8.71 E-01

( e.g., trash, paper, discarded protective clothing, etc.) I Activated or 0 0 0 contaminated metal or equipment, etc.)

Other radioactive waste 9 196 1.66 E+0l (e.g., mixed waste, bulk waste, soil, rubble, etc.)

RevisionO

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