Comparison of the Current Center of Site Annual Neshap Dose Modeling at the Savannah River Site with Other Assessment Methods

Minter, Kelsey M.; Jannik, G. Timothy; Stagich, Brooke; Dixon, Kenneth; Newton, Joseph

doi:10.1097/hp.0000000000000835

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…For the stack height inputs at SRS, the reference heights related to operational stack heights in the tritium production facilities located in H Area were used; 0m, 15m, 21m, 31m, 56m, 59m. If there were emissions from other areas on site at a stack height not in the six previously listed, the stack height was defaulted to the shorter stack height, as shorter stack heights produce a higher estimated dose (Minter et al 2018).…”

Section: Figure 1-1 Exposure Pathways To Humans From Atmospheric and Liquid Effluentsmentioning

confidence: 99%

Radiological Impact of 2020 Operations at the Savannah River Site

Stagich

Jannik

LaBone

et al. 2021

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This report presents the environmental dose assessment methods and the estimated potential doses to the public from 2020 Savannah River Site (SRS) air and liquid radioactive releases. Also documented are potential doses from special-case exposure scenarios, such as the consumption of wildlife or goat milk. Dose to the Offsite Representative PersonThe 2020 dose to the offsite representative person from SRS liquid releases was 0.35 mrem and from SRS air releases it was 0.012 mrem. To show compliance with the U. S. Department of Energy (DOE) allpathway dose standard of 100 mrem/yr, SRS conservatively adds these two doses for a total representative person dose of 0.36 mrem which is 0.36% of the DOE standard. Sportsman DosesOnsite Hunter: SRS conducts annual hunts to control onsite deer and feral hog populations. The estimated dose from consuming harvested deer or hog meat is determined for every onsite hunter. During 2020, the maximum potential dose an onsite hunter received was 10.6 mrem, or 10.6% of DOE's 100 mrem/yr allpathway dose standard.Creek Mouth Fisherman: SRS estimated the maximum potential dose from fish consumption at 0.53 mrem from bass collected at the mouth of Steel Creek. This dose is 0.53% of the DOE standard. SRS bases this hypothetical dose on the low probability scenario that, during 2020, a fisherman consumed 24 kg (53 lbs) of bass caught exclusively from the mouth of Steel Creek. Release of Material Containing Residual RadioactivitySRS did not release any real property (land or buildings) in 2020. SRS unconditionally released a total of 11,312 items of personal property (such as tools) from radiological areas in 2020. Most of these items did not leave the Site. However, all of these items required no additional radiological controls post-survey as they met DOE Order 458.1 release criteria. Radiation Dose to Aquatic and Terrestrial BiotaSRS conducts screening evaluations of plant and animal doses for aquatic and terrestrial ecosystems. For 2020, all SRS aquatic system locations passed the initial (Level 1) and Level 2 screenings and no further assessments were required at those locations.For the land-based systems evaluation, SRS performed initial screenings using concentration data from the five onsite radiological soil sampling locations. Typically, SRS collects and analyzes only one soil sample per year from each location. For 2020, all land-based locations passed their initial (Level 1) pathway screenings.

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Section: Figure 1-1 Exposure Pathways To Humans From Atmospheric and Liquid Effluentsmentioning

confidence: 99%

Radiological Impact of 2020 Operations at the Savannah River Site

Stagich

Jannik

LaBone

et al. 2021

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“…The change from the COS to the H area location and the change to the use of six stack heights increased the estimated dose by about 30%. (Minter et al 2018) 1.3 Dose Coefficients From 1988 through 2009, SRS used the internal and external dose conversion factors provided in DOE (1988). In 2010, the internal dose conversion factors were updated to use the dose factors from ICRP Publication 72 (ICRP 1996) and the external dose conversion factors were updated to the dose factors provided in Federal Guidance Report 12 (EPA 1993).…”

Section: Figure 1-2 Location Changes For Representative Persons For Amentioning

confidence: 99%

Radiological Impact of 2017 Operations at the Savannah River Site

Bell

2018

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This report presents the environmental dose assessment methods and the estimated potential doses to the offsite public from 2017 Savannah River Site (SRS) air and liquid radioactive releases. Also documented are potential doses from special-case exposure scenarios, such as the consumption of wildlife or goat milk. Dose to the Offsite Representative Person The 2017 dose to the offsite representative person from SRS liquid releases was 0.22 mrem and from SRS air releases it was 0.027 mrem. To show compliance with the U. S. Department of Energy (DOE) allpathway dose standard of 100 mrem/yr, SRS conservatively adds these two doses for a total representative person dose of 0.25 mrem which is 0.25% of the DOE standard. Sportsman Doses Onsite Hunter: SRS conducts annual hunts to control onsite deer and feral hog populations. The estimated dose from consuming harvested deer or hog meat is determined for every onsite hunter. During 2017, the maximum potential dose an onsite hunter received was 12.2 mrem, or 12.2% of DOE's 100 mrem/yr allpathway dose standard. Creek Mouth Fisherman: SRS estimated the maximum potential dose from fish consumption at 0.36 mrem from catfish collected at the mouth of Lower Three Runs Branch. This dose is 0.36% of the DOE standard. SRS bases this hypothetical dose on the low probability scenario that, during 2017, a fisherman consumed 24 kg (53 lb) of catfish caught exclusively from the mouth of Lower Three Runs. Release of Material Containing Residual Radioactivity SRS did not release any real property (land or buildings) in 2017. SRS unconditionally released a total of 14,498 items of personal property (such as tools) from radiological areas in 2017. Most of these items did not leave the Site. However, all of these items required no additional radiological controls post-survey as they met DOE Order 458.1 release criteria. Radiation Dose to Aquatic and Terrestrial Biota SRS conducts screening evaluations of plant and animal doses for aquatic and terrestrial ecosystems. For 2017, all SRS aquatic system locations passed the initial screening and no further assessments were required at those locations.

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Comparison of the Current Center of Site Annual Neshap Dose Modeling at the Savannah River Site with Other Assessment Methods

Cited by 2 publications

References 1 publication

Radiological Impact of 2020 Operations at the Savannah River Site

Radiological Impact of 2020 Operations at the Savannah River Site

Radiological Impact of 2017 Operations at the Savannah River Site

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