Radiological environmental monitoring programs remp
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Radiological Environmental Monitoring Programs (REMP). HPT 001.037. Enabling Objectives. Objectives of REMP REMP Requirements Document Two Primary Pathways Parameters of Critical Pathway Analysis Importance of Preoperational Monitoring Direct Radiation Measurements

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Radiological Environmental Monitoring Programs (REMP)

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Radiological environmental monitoring programs remp

Radiological EnvironmentalMonitoring Programs (REMP)

HPT 001.037


Enabling objectives

Enabling Objectives

  • Objectives of REMP

  • REMP Requirements Document

  • Two Primary Pathways

  • Parameters of Critical Pathway Analysis

  • Importance of Preoperational Monitoring

  • Direct Radiation Measurements

  • Local, Perimeter, & Remote Stations


Enabling objectives1

Enabling Objectives

  • Categories of Food Products

  • Water Sampling Technique

  • Categories of Fish

  • Quality Control Samples

  • Purpose of Land Use Survey

  • Predominant Fission/Activation Product

  • Results Report


Remp objectives

REMP Objectives

  • Determine Plant Effects on People

  • Determine Trends of Radioactivity in the Environment

  • Provide Assurance to the Public

  • Meet Regulatory Requirements

  • Provide for Monitoring during Emergencies


Remp bases

REMP Bases

  • 10 CFR 50, Appendix A, General Design Criterion 64 - Monitor Plant Environs for Radioactivity.

  • 10 CFR 50, Appendix I, Appropriate Monitoring to Evaluate Doses.

  • NRC Generic Letter 89-01 – Programmatic Controls in Tech Specs & ODCM


Remp descriptions

REMP Descriptions

  • FSAR – General Monitoring Program

  • Plant Technical Specifications – Administrative Controls.

  • Plant Offsite Dose Calculation Manual (ODCM) – Specific Requirements for the Monitoring Programs


Critical pathways

Critical Pathways

  • Airborne Pathways

  • Waterborne Pathways


Airborne pathways

Airborne Pathways

  • Direct (Air)1. Direct Radiation2. Inhalation

  • Indirect (Ground or Terrestrial)1. Materials Deposited on Ground2. Materials Deposited on Plants and Ingested.


Waterborne pathway

Waterborne Pathway

  • Ingestion of Water

  • Ingestion of Fish or other Aquatic Animals or Plants

  • Direct Exposure at the Shoreline


Pathways for exposure

Pathways for Exposure


Parameters for a critical pathway analysis

Parameters for aCritical Pathway Analysis

  • Dose Projections

  • Weather Patterns

  • Population Distribution

  • Land Use


Air related pathways

Air-Related Pathways

DoseConc.LLDmRem/yr1. AirpCi/m3pCi/m3I-131 0.050.00240.0100Noble Gas 0.43

2. MilkpCi/LpCi/LI-131 0.090.050.503. VegetablespCi/KgpCi/KgI-131 0.620.211-8Sr-90 1.000.11 8Sr-89 0.701.00 40


Ranking air related pathways

RankingAir-Related Pathways

Based on Calculated Annual Dose (mRem/yr)

SrIodineNoble Gases

  • Vegetation(1.7) Milk (>1)(1.0 Sr-90) (Conservative(0.7 Sr-89) Assumptions)

  • Vegetation (0.62) Direct (0.43)

  • Inhalation (0.05) Milk (0.09) (Actual Location)


Dose distribution sqn

Dose Distribution – SQN

% of TotalMonitorsRank Dose Sector 1-10 Miles>10 Miles 1 19.1 SSWLM, PM 2 15.4 NNELM, PMRM 3 13.9 NELM 4 9.0 NLM, PM 5 9.0 SWPMRM 6 6.6 S 7 5.0 SSE 8 4.7 ENE 9 3.4 SE 10 3.0 NNW 11 2.5 WSWPM 12 2.3 E 13 2.2 ESERM 14 1.5 WPM 15 1.4 NW 16 0.9 WNWRM


Dose distribution times population sqn

Dose DistributionTimes Population - SQN

% of TotalRank DoseSectorMonitors, 1-10 Miles 1 19 SSWLM, PM 2 15 WSWPM 3 12 SWPM 4 9 NW 5 9 WPM 6 6 WNW 7 5 S 8 3 NNW 9 3 SSE 10 2 NLM 11 2 NNELM 12 2 SE 13 1 ESE 14 1 NELM 15 1 ENE 16 1 E


Water related pathways

Water-Related Pathways

Annual DosemRem/yrConcentrationLLD

  • Water pCi/LpCi/LMF&AP 0.00230.0920 5-10I-131 0.00510.0036 1-8H-3 0.00012.0000 330Sr-90 0.00220.0004 2

  • FishpCi/gpCi/gMF&AP 0.38002.0000 0.01-0.10I-131 0.02100.0020 0.02Sr-90 0.00550.0001 0.10

    MF&AP = Mixed Fission & Activated Products


Ranking water related pathways

RankingWater-Related Pathways

Based on Calculated Annual Dose (mRem/yr)

IodineSrMF&AP

  • Fish (0.38)

  • Fish Ingestion (0.021)

  • WaterWaterWater Ingestion (0.0051) Ingestion (0.0022) IngestionFish (0.0055)(0.0023) MF&AP = Mixed Fission & Activated Products


Preoperational monitoring program

PreoperationalMonitoring Program

  • Establish Background Radiation Levels

  • Identify Fluctuations in Background Data


Background fluctuations

Background Fluctuations

  • Seasonal

  • Annual

  • Random


Gross beta in air

Gross Beta in Air


Thermoluminescent dosimeter

ThermoluminescentDosimeter


Direct radiation monitoring

Direct RadiationMonitoring


Atmospheric monitoring stations

Atmospheric MonitoringStations

  • Local Monitors (LM) – On or Adjacent to the Site Boundary

  • Perimeter Monitors (PM) – 3-10 Miles from the Site

  • Remote Monitors (RM) – > 10 Miles from the Site


Air monitor station

Air Monitor Station


Original air filter

Original Air Filter


Air flow measuring equipment

Air FlowMeasuring Equipment


Present air sample collector

Present Air SampleCollector


Air filter assembly

Air Filter Assembly


Rainwater collection tray

Rainwater Collection Tray


One type of soil sampler

One Type ofSoil Sampler


Typical food products 1

Typical Food Products - 1

  • Fresh Leafy Vegetables1. Lettuce2. Cabbage3. Greens

  • Other Vegetables1. Tomatoes2. Green Beans3. Corn


Typical food products 2

Typical Food Products - 2

  • Tubers1. Potatoes2. Turnips

  • Fruits1. Apples2. Peaches

  • Meat/Poultry1. Beef2. Chicken


Water sampling station

Water Sampling Station


Fish samples

Fish Samples

  • Commercial Species1. Catfish2. Smallmouth Buffalo

  • Game Species1. Bass2. Crappie


Electrofishing

Electrofishing


Sample analyses

Sample Analyses

  • Gross Beta – Low Background Counter

  • I-131 Specific – Chemical Separation & Beta-Gamma Coincidence Counting

  • Sr-89,90 – Chemical Separation/Beta Ct.

  • Tritium – Liquid Scintillation Counting


Liquid scintillation counting

Liquid ScintillationCounting


Sample analyses1

Sample Analyses

  • Gross Beta – Low Background Counter

  • I-131 Specific – Chemical Separation & Beta-Gamma Coincidence Counting

  • Sr-89,90 – Chemical Separation/Beta Ct.

  • Tritium – Liquid Scintillation Counting

  • Gamma – Gamma Spectroscopy1. Marinelli Beaker2. “Cottage Cheese” Type Container, Various

  • Charcoal Cartridge – High Resolution Gamma


Marinelli beakers

Marinelli Beakers


Counting solid samples

Counting Solid Samples


Quality control program

Quality Control Program

  • Equipment Checks

  • Laboratory Cross Check Program with Outside Laboratory

  • Split Samples with AL, TN, & EPA

  • Quality Control Samples

  • Supervisors Review Trends/Problems


Quality control samples

Quality Control Samples

  • Blank Samples

  • Duplicate Samples

  • Split Samples

  • Analytical Knowns

  • Blind Spikes

  • Internal Cross-Checks


Land use survey

Land Use Survey


Cs 137 in soil

Cs-137 in Soil


Annual radiological environmental operating report

Annual Radiological Environmental Operating Report

  • Site/Plant Descriptions

  • Monitoring Program Description

  • Assessment/Evaluation of Plant Impacts

  • Monitoring Program Modifications

  • Missed Samples/Analyses


Annual radiological environmental operating report1

Annual Radiological Environmental Operating Report

  • Analytical Procedures

  • Nominal Lower Limits of Detection (LLD)

  • Quality Assurance/Quality Control Program

  • Land Use Survey Results

  • Data Tables


Summary analysis

Summary - Analysis

  • Critical Pathway Analysis Includes Dose Projections Based on:1. Dose Projections2. Weather Patterns3. Population Distribution4. Land Use


Summary remp

Summary - REMP

  • REMP Sampling1. Direct Radiation2. Atmospheric Media3. Terrestrial Media4. Waterborne Media

  • Quality Assurance/Quality Control

  • Land Use Survey

  • Annual Report to NRC


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