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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

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



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

Dose Conc. LLDmRem/yr1. Air pCi/m3pCi/m3 I-131 0.05 0.0024 0.0100 Noble Gas 0.43

2. Milk pCi/LpCi/L I-131 0.09 0.05 0.503. Vegetables pCi/KgpCi/Kg I-131 0.62 0.21 1-8 Sr-90 1.00 0.11 8 Sr-89 0.70 1.00 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 Total MonitorsRank Dose Sector 1-10 Miles>10 Miles 1 19.1 SSW LM, PM 2 15.4 NNE LM, PM RM 3 13.9 NE LM 4 9.0 N LM, PM 5 9.0 SW PM RM 6 6.6 S 7 5.0 SSE 8 4.7 ENE 9 3.4 SE 10 3.0 NNW 11 2.5 WSW PM 12 2.3 E 13 2.2 ESE RM 14 1.5 W PM 15 1.4 NW 16 0.9 WNW RM


Dose distribution times population sqn
Dose DistributionTimes Population - SQN

% of TotalRank DoseSectorMonitors, 1-10 Miles 1 19 SSW LM, PM 2 15 WSW PM 3 12 SW PM 4 9 NW 5 9 W PM 6 6 WNW 7 5 S 8 3 NNW 9 3 SSE 10 2 N LM 11 2 NNE LM 12 2 SE 13 1 ESE 14 1 NE LM 15 1 ENE 16 1 E


Water related pathways
Water-Related Pathways

Annual DosemRem/yrConcentrationLLD

  • Water pCi/LpCi/LMF&AP 0.0023 0.0920 5-10I-131 0.0051 0.0036 1-8H-3 0.0001 2.0000 330Sr-90 0.0022 0.0004 2

  • Fish pCi/gpCi/gMF&AP 0.3800 2.0000 0.01-0.10I-131 0.0210 0.0020 0.02Sr-90 0.0055 0.0001 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)

  • Water Water Water Ingestion (0.0051) Ingestion (0.0022) Ingestion Fish (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




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 flow measuring equipment
Air FlowMeasuring Equipment





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



Fish samples
Fish Samples

  • Commercial Species1. Catfish2. Smallmouth Buffalo

  • Game Species1. Bass2. Crappie



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



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




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




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