ML19079A246

From kanterella
Jump to navigation Jump to search
Submittal of General Atomics Triga Mark 1 and Mark F Annual Reports for Calendar Year 2018 (3 Copies Each)
ML19079A246
Person / Time
Site: General Atomics
Issue date: 03/18/2019
From: Grogan M
General Atomics
To: Vaaler M
Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
Download: ML19079A246 (13)
v • d • e


Text

+ GENERAL ATOMleS March 18, 2019 38/67- 4960 VIA OVERNIGHT DELIVERY SERVICE Document Control Desk ATTN: Ms. Marlayna Vaaler, Project Manager Reactor Decommissioning Branch Division of Decommissioning, Uranium Recovery & Waste Programs Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Two White Flint North, Mailstop 8 F8 11545 Rockville Pike Rockville, Maryland 20852-2738

Subject:

Docket No. 50-89, Facility License R-38, and Docket No. 50-163, Facility License R-67; Submittal of General Atomics TRIGA Mark and Mark F Annual Reports for Calendar Year 2018 (3 Copies each)

Dear Ms. Vaaler:

Enclosed are the annual reports required by the applicable Technical Specifications of General Atomics' (GA's) Mark I (License R-38) and Mark F (License R-67) TRIGA research reactors. These reports cover operations for the calendar year 2018. The sections of these reports are numbered consistent with the items of information referred to in Section 7.6d of the Technical Specifications for the Mark I TRIGA reactor and in 8.6d of the Technical Specifications for the Mark F TRIGA reactor.

Should you need additional information concerning the above, please contact me at (858) 455-2809 or by email michael.grogan@ga.com or Mr. John Greenwood at (858) 455-4526 or at john.greenwood@ga.com.

Enclosures:

1) TRIGAMark I Reactor/Annual Report/Calendar Year 2018, dated March, 2019 (3 Copies)
2) TRIGA Mark F Reactor/Annual Report/Calendar Year 2018, dated March, 2019 (3 Copies) cc: Mr. Alexander Adams, Jr. (NRC) 3550 GENERAL ATOMICS COURT, SAN DIEGO, CA 92121-1122 PO BOX 85608, SAN DIEGO, CA 92186-5608 {858) 455-3000

+ t:ENEIUIL ATOMICS TRIGA Mark I Reactor ANNUAL REPORT CALENDAR YEAR 2018 Prepared to satisfy the requirements of U.S. Nuclear Regulatory Commission Facility License R-38 Docket No. 50-89 MARCH 2019

GENERAL ATOMICS TRIGA REACTORS FACILITY TRIGA Mark I Reactor ANNUAL REPORT Calendar Year 2018 TABLE OF CONTENTS I

Section

1. INTRODUCTION ...............................................................................................................1
2.

SUMMARY

OF FACILITY ACTIVITIES ............................................................................ 1 2.1 Decommissioning Status ................................................................................................ 1 2.2 Facility Status ................................................................................................................ 1 2.3 Decommissioning Schedule ............................................................................: .............. 2 2.4 Radioactive Material Shipments ..................................................................................... 2

3. MAINTENANCE OPERATIONS .......................................................................................2
4. 10CFR50.59 FACILITY MODIFICATIONS AND SPECIAL EXPERIMENTS .................... 2
5. RADIOACTIVE EFFLUENTS RELEASE TO THE ENVIRONS ....-..................................... 2
6. ENVIRONMENTAL SURVEYS .........................................................................................3
7.

SUMMARY

OF RADIATION EXPOSURES AND RADIOLOGICAL SURVEYS ............... 4 7.1 General Atomics Staff Whole Body Exposures ............................................................. 4 7.2 Non-General Atomics Staff Whole Body Exposures ...................................................... 4 7 .3 Routine Wipe Surveys Of Mark I Reactor Facility .......................................................... .4 7.4 Routine Radiation Measurements Of Mark I Reactor Facility ...... :................................. .4 ii

1. INTRODUCTION This report documents operation of the General Atomics (GA) TRIGA 1 Mark I non-power reactor for the period January 1, 2018 through December 31, 2018. The TRIGA Mark I Reactor, possessed by GA at its San Diego, California facilities as authorized under License No.

R-38 (Amendment No. 36) granted by the U.S. Nuclear Regulatory Commission (Docket No. 50-

89) was not operated for the duration of the reporting period.

This report is being prepared and submitted to satisfy the requirements of Section 7.6(d) of the R-38 Technical Specifications, as amended. This report is presented in six parts, consistent with the information required by the applicable Technical Specifications.

2.

SUMMARY

OF FACILITY ACTIVITIES 2.1 Decommissioning Status During Calendar Year (CY) 2018, the TRIGA Mark I Reactor was in Decommissioning status.

A contract was issued in July 2018 to Clauss Construction to remove the radiologically contaminated and/or activated structural materials from the lower portions of the TRIGA Mark I reactor pit in a controlled and safe manner while minimizing the resulting volume of Low Level Radioactive Waste (LLRW). This contract included activities focused on the Mark F reactor pit excavation in addition to those carried out in the Mark I.

The major tasks accomplished during this reporting period were:

  • Received a soil stabilization report for the excavation of the Mark I reactor pit from Cartwright Engineers of Logan, UT who were contracted by Clauss Construction to provide this evaluation.
  • Structural engineering consultant BWE, Inc. of San Diego, CA provided an independent review of the soil stabilization report
  • Implemented findings of the soil stabilization report by installing micropiles around the perimeter of the Mark I reactor pit to prevent soil from entering the excavation. This was carried out by shoring sub-contractor Condon-Johnson under the umbrella of the prime Clauss Construction contract.
  • Secured the micropiles to the inside wall of the Mark I concrete biological shield using lifting chains and tow hooks secured with screw anchors. This was done on alternating micropiles as an added measure to stabilize the biological shield.
  • Removed the Mark I floor concrete and several inches of soil below it.
  • Cartwright Engineers provided oversight of the Mark I excavation anytime work was in process.

2.2 Facility Status The Mark I reactor was in DEGON status during CY 2018. Stabilization of the soil surrounding the Mark I reactor pit was completed using a series* of micropiles. Excavation of the Mark I reactor pit began with removal of floor concrete and several inches of underlying soil.

1 TRIGA is a registered trademark of General Atomics 1

2.3 Decommissioning Schedule A contract was issued in July 2018 to Clauss Construction covering excavation of both the Mark I and Mark F reactor pits. A single contract covering both reactors was issued to more efficiently utilize personnel, equipment and material. This Phase 2 contract, with a seven month duration, was a follow-on to a Phase 1 contract issued in November 2017. Phase 1 funded an assessment of the structural integrity of both the Mark I and Mark F excavations and included providing recommendations to stabilize the reactor structures if necessary. The Mark I was found to require post excavation stabilization as described in Section 2.1, "Decommissioning Activities", above. Completion of the excavation, post remediation confirmatory sampling and final status surveys of the Mark I are scheduled for CY 2019.

2.4 Radioactive Material Shipments During 2018 there were no radioactive shipments or transfers made from the TRIGA Mark I facility.

3. MAINTENANCE OPERATIONS All maintenance activities performed during the reporting period generally fall into three categories: (i) routine preventive maintenance, (ii) routine calibration activities, and (iii) activities associated with replacement of older components and systems due to age. All maintenance activities are recorded in the TRIGA Reactor Facility Decommissioning Logbook. Facility Maintenance Checklists are completed on a regular schedule at weekly, quarterly, and annual frequencies. All maintenance operations performed on the TRIGA Mark I Reactor Facility were minor in nature. There were no major maintenance operations performed during the reporting period.
4. 10CFR50.59 FACILITY MODIFICATIONS AND SPECIAL EXPERIMENTS No applications for Facility Modification under the provisions of 10CFR50.59 were submitted for the R-38 facility during the CY2018 reporting period.

There were no Special Experiments submitted for the R-38 facility during CY2018.

5. RADIOACTIVE EFFLUENTS RELEASE TO THE ENVIRONS During CY2018, no liquid radioactive effluent was released into the GA main site sanitary sewer system. Table 5.1 lists data on the radiological gaseous and particulate effluent released via the TRIGA Facility's exhaust stack to unrestricted areas. TM1 indicates the TRIGA Mark I facility and TMF the TRIGA Mark F facility. MFP indicates Mixed Fission Products. All airborne releases were well below the allowable State of California and NRC (1 OCFR20) limits.

2

Table 5.1: Gas and Particulate Effluents 8.63E-8 9.06E-8 l.77E-7 TMl MFP l.53E-7 TMF MFP 1760 1.5 74.71 0.009 l.76E-7 TOTAL 3.29E-7 TMF IODINES 1760 1.5 74.71 0.050 9.79E-7 (1) Measured -Airborne effluents from selected facilities are monitored. The samples are collected weekly and analyzed using low-level alpha/beta counting systems. The average concentration (pCi/m 3) *over the six month period is obtained for each release point (alpha and beta concentrations are added).

(2) Ci Released= (# of operating days) (24 hr/day) (60 min/hr) (le-6 uCi/pCi) (le-6 Ci/uCi) (#m 3/min) (average pCi/m 3 ) Note:

Operating days may be different based.on dates the ventilation system is shut down.

(3) Flow Rate X Stack Area (Note: 0.0283 m3 = 1 °ft3). .

(4) Values shown are either six-month Averages or are equal to the MDA for GA instrumentation.

6. ENVIRONMENTAL SURVEYS During CY2018, the Environmentc:11 Monitoring Program (EMP) for the TRIGA Reactor Facility remained essentially unchanged from the prior year. The applicable EMP includes the following monitoring equipment and actions: .

o In addition to the two (2) stack air samplers situated on the roof of the TRIGA Reactor Facility there are three (3) environmental air samplers situated at or adjacent to the GA site perimeter in accordance with the GA Special Nuclear Material License (SNM-696).

Alert Level.- 20 pCi/m 3 Highest Result- 0.164 pCi/m3 o Daily liquid effluent monitoring from the GA Main Sewerage Outfall Pump House, for gross alpha and beta radioactivity concentrations.

Alert Level - 100 pCi/1 Highest Result - 21.9 pCi/1 o External radiation mqnitoring of the TRIGA Reactor Facility using sixteen (16) passive area dosimeters, as well as radiation meter surveys conducted periodically.

Alert Level - 15 mrem/qtr Highest Result - 9 mrem/qtr o A Continuous Air Monitor (CAM), situated in the Mark I Reactor Room (21/102),

continuously samples room air for airborne radioactivity when decommissioning activities 3

are taking place. CAM air filters are collected each week and analyzed for radioactivity.

Alert Level - 1E-10 uCi/ml Highest Result - 4.25E-13 uCi/ml (1% Co-60, Eu-152 DAC)

7. *

SUMMARY

OF RADIATION EXPOSURES AND RADIOLOGICAL SURVEYS The following data summarizes measured personnel occupational radiation exposures and radiological surveys of the TRIGA Reactors Facility during CY 2018. Personnel who are listed on the TRIGA Reactors Facility Work Authorization (WA #600-17 and as of June 20, 2018 WA

  1. 600-18) and specific Radiological Work Permits (RWPs) were monitored for radiation exposure; these individuals included 15 General Atomics Staff and 24 Non-General Atomics Staff employees.

7.1 General Atomics Staff Whole Body Exposures 2 Number of individuals monitored: 15 High Exposure: 0.001 REM Low Exposure: 0.000 REM Average Exposure: < 0.001 REM 7.2 Non-General Atomics Staff Whole Body Exposures 3 Number of individuals monitored: 24 High Exposure: 0.004 REM Low Exposure: 0.000 REM Average Exposure: 0.001 REM 7.3 Routine Wipe Surveys Of Mark I Reactor Facility High Wipe: 18.4 dpm/100 cm 2 Low Wipe: <1 dpm/100 cm 2 Average Wipe: 1 dpm/100 cm 2 7.4 Routine Radiation Measurements Of Mark I Reactor Facility High Measurement: < 0.2 mR/hr Low Measurement: < 0.2 mR/hr Average Level: < 0.2 mR/hr 2 Includes reactor facility staff and facility support staff authorized to work at the TRIGA Reactor Facility.

These personnel may also work routinely at other GA radiation facilities; therefore, this dose represents cumulative exposure at all GA facilities.

3 Includes non-GA personnel who were granted periodic access to the facility for the performance of work.

These personnel may also Work routinely at other GA radiation facilities; therefore, this dose represents cumulative exposure at all GA facilities.

4

+ t:ENERAL A"IONIICS TRIGA Mark F Reactor ANNUAL REPORT CALENDAR YEAR 2018 Prepared to satisfy the requirements of U.S. Nuclear Regulatory Commission Facility License R-67 Docket No. 50-163 MARCH 2019

GENERAL ATOMICS TRIGA REACTORS FACILITY TRIGA Mark F Reactor ANNUAL REPORT Calendar Year 2018 TABLE OF CONTENTS I

Section

1. INTRODUCTION ............................................................................................................... 1
2.

SUMMARY

OF FACILITY ACTIVITIES ............................................................................ 1 2.1 Decommissioning Status ................................................................................................ 1 2.2 Facility Status ...............................*................................................................................. 1 2.3 Decommissioning Schedule ........................................................................................... 1 2.4 Radioactive Material Shipments ..................................................................................... 1

3. MAINTENANCE OPERATIONS .......................................................................................2
4. 10CFR50.59 FACILITY MODIFICATIONS AND SPECIAL EXPERIMENTS .................... 2
5. RADIOACTIVE EFFLUENTS RELEASE TO THE ENVIRONS ......................................... 2
6. ENVIRONMENTAL SURVEYS ......................................................................................... 3
7.

SUMMARY

OF RADIATION EXPOSURES AND RADIOLOGICAL SURVEYS ............... 3 7.1 General Atomics Staff Whole Body Exposures ............................................................. 3 7.2 Non-General Atomics Staff Whole Body Exposures ..................................................... .4 7.3 Routine Wipe Surveys Of Mark F Reactor Facility......................................................... .4 7.4 Routine Radiation Measurements Of Mark F Reactor Facility ........................................ 4 ii

1. INTRODUCTION This report documents operation of the General Atomics (GA) TRIGA1 Mark F non-power reactor for the period January 1, 2018 through December 31, 2018. The TRIGA Mark F Reactor, possessed by GA under License No. R-67 (Amendment No. 45) granted by the U.S. Nuclear Regulatory Commission (Docket No. 50-163), at its San Diego, California facilities, was not operated for the duration of the reporting period.

This report is being prepared and submitted to satisfy the requirements of Section 8.6(d) of the R-67 Technical Specifications, as amended. This report is presented in six parts, consistent with the information required by the applicable Technical Specifications.

2.

SUMMARY

OF FACILITY ACTIVITIES 2.1 Decommissioning Status

  • During Calendar Year (CY) 2018, the TRIGA Mark F Reactor was in a Decommissioning status.

A contract was issued in July 2018 to Clauss Construction to remove the radiologically contaminated and/or activated structural materials from the lower portions of the TRIGA Mark F reactor pit in a controlled and safe manner while minimizing the resulting volume of Low Level Radioactive Waste (LLRW). This contract included activities focused on the Mark I reactor pit excavation in addition to those carried out in the Mark F. During the reporting period, the Mark F reactor pit/biological shield was excavated to remove neutron activated portions of gunite, steel reinforced concrete and steel plate. The material was excavated to the extent that activity levels at the remaining surfaces were below the NRC approved radioisotope specific radiological release criteria. The LLRW removed was packaged in IP-1 boxes for disposal.

2.2 Facility Status The Mark F reactor was in DECON status during CY 2018. The reactor pit has been excavated and samples extracted and analyzed from remaining exposed surfaces to confirm remediation to below release limits.

2.3 Decommissioning Schedule A contract was issued in July 2018 to Clauss Construction covering excavation of both the Mark I and Mark F reactor pits. A single contract covering both reactors was issued to more efficiently utilize personnel, equipment and material. This Phase 2 contract, with a seven month duration, was a follow-on to a Phase 1 contract issued in November 2017. Phase 1 funded an assessment of the structural integrity of both the Mark I and Mark F excavations and included providing recommendations to stabilize the reactor structures if necessary. Due to the robust design of the Mark F concrete biological shield, the Mark F reactor was not found to require any post excavation stabilization. With the Phase 2 effort complete, post remediation confirmatory sampling and final status surveys of the Mark F are scheduled for CY 2019.

2.4 Radioactive Material Shipments During 2018 there were no radioactive shipments or transfers made from the TRIGA Mark F facility.

1 TRIGA is a registered trademark of General Atomics 1

3. MAINTENANCE OPERATIONS All maintenance activities performed during the reporting period generally fall into three categories: (i) routine preventive maintenance, (ii) routine calibration activities, and (iii) activities associated with replacement of older components and systems due to age. All maintenance activities are recorded in the TRF Decommissioning Logbook. Facility Maintenance Checklists are completed on a regular schedule at weekly, quarterly, and annual frequencies. All maintenance operations performed on the TRIGA Mark F Reactor Facility were minor in nature.

There were no major maintenance operations performed during the reporting period.

4. 10CFR50.59 FACILITY MODIFICATIONS AND SPECIAL EXPERIMENTS No applications for Facility Modification under the provisions of 10CFR50.59 were submitted for the R-67 facility during the CY2018 reporting period.

There were no Special Experiments submitted for the R-67 facility during CY2018.

5. RADIOACTIVE EFFLUENTS RELEASE TO THE ENVIRONS During CY2018, no liquid radioactive effluent was released into the GA main site sanitary sewer system. Table 5.1 lists data on the radiological gaseous and particulate effluent released via the TRIGA Facility's exhaust stack to unrestricted areas. TM1 indicates the TRIGA Mark I facility and TMF the TRIGA Mark F facility. MFP indicates Mixed Fission Products. All airborne releases were well below the allowable State of California and NRC (1 OCFR20) limits.

Table 5.1: Gas and Particulate Effluents MFP 1139 1.46 47.06 0.007 8.63E-8 TMF MFP 1164 1.5 49.41 0.007, 9.06E-8 TOTAL 1.77E-7 58.55 TMF MFP 1.5 74.71- 0.009 1.76E-7 TOTAL 3.29E-7 TMF IODINES 1760 1.5 74.71 0.050 9.79E-7 2

(1) Measured - Airborne effl~ents from selected facilities are monitored. The samples are collected weekly and analyzed using low-level alpha/beta counting systems. The average concentration (pCi/m 3 ) over the six month period is obtained for each release point (alpha and beta concentrations are added).

(2) Ci Released=(# of operating days) (24 hr/day) (60 min/hr) (le-6 uCi/pCi) (le-6 Ci/uCi) (#m 3/min) (average pCi/m 3 ) Note:

Operating days may be different based on dates the ventilation system is shut down.

(3) Flow Rate X Stack Area (Note: 0.0283 m3 = 1 ft 3 ).

(4) Values shown are either six-month Averages or are equal to the MDA for GA instrumentation.

6. ENVIRONMENTAL SURVEYS During CY2018, the Environmental Monitoring Program (EMP) for the TRF remained essentially unchanged from the prior year. The applicable EMP includes the following monitoring equipment and actions:

o In addition to the two (2) stack air samplers situated on the roof of the TRIGA Reactor Facility there are three (3) environmental air samplers situated at or adjacent to the GA site perimeter in accordance with the GA Special Nuclear Material License (SNM-696).

Alert Level - 20 pCi/m 3 Highest Result - 0.164 pCi/m 3 o Daily liquid effluent monitoring from the GA Main Sewerage Outfall Pump House, for gross alpha and beta radioactivity concentrations.

Alert Level - 100 pCi/1 Highest Result - 21.9 pCi/1 o External radiation monitoring of the TRIGA Reactor Facility using sixteen (16) passive area dosimeters, as well as radiation meter surveys conducted periodically.

Alert Level - 15 mrem/qtr Highest Result - 9 mrem/qtr o A Continuous Air Monitor (CAM), situated in the Mark F Control Room (21/108),

continuously samples room air for airborne radioactivity when decommissioning activities are taking place. CAM air filters are collected each week and analyzed for radioactivity.

Alert Level - 1E-10 uCi/ml Highest Result- 6.81 E-14 uCi/ml (1% Co-60, Eu-152 DAC)

7.

SUMMARY

OF RADIATION EXPOSURES AND RADIOLOGICAL SURVEYS The following data summarizes measured personnel occupational radiation exposures and radiological surveys of the TRIGA Reactors Facility during CY 2018. Personnel who are listed on the TRIGA Reactors Facility Work Authorization (WA #600-17 and as of June 20, 2018 WA

  1. 600-18) and specific Radiological Work Permits (RWPs) were monitored for radiation exposure; these individuals included 15 General Atomics Staff and 24 Non-General Atomics Staff employees.

7.1 General Atomics Staff Whole Body Exposures 2 2 Includes reactor facility staff and facility support staff authorized to work at the TRIGA Reactor Facility.

These personnel may also work routinely at other GA radiation facilities; therefore, this dose represents 3

Number of individuals monitored: 15 High Exposure: 0.001 REM Low Exposure: 0.000 REM Average Exposure: < 0.001 REM 7.2 Non-General Atomics Staff Whole Body Exposures 3 Number of individuals monitored: 24 High Exposure: 0.004 REM Low Exposure: 0.000 REM Average Exposure: 0.001 REM 7.3 Routine Wipe Surveys Of Mark F Reactor Facility High Wipe: 29.3 dpm/100 cm 2 Low Wipe: <1 dpm/100 cm 2 Average Wipe: 4.8 dpm/100 cm 2 7.4 Routine Radiation Measurements Of Mark F Reactor Facility High Measurement: < 0.2 mR/hr Low Measurement: < 0.2 mR/hr Average Level: < 0.2 mR/hr cumulative exposure at all GA facilities.

3 Includes non-GA personnel who were granted periodic access to the facility for the performance of work.

These personnel may also work routinely at other GA radiation facilities; therefore, this dose represents cumulative exposure at all GA facilities.

4

Retrieved from "https://kanterella.com/w/index.php?title=ML19079A246&oldid=2069795"