MW-RN-2020 (1)

Introduction 2
TOC 4
1. Scope 5
2. Definitions 6
3. Field—Prepare For Collecting Water Samples 8
4. Field—Test Locations 9
4.1 Contolled flow and prevention of aeration 9
4.2 Holding tanks and prior to water treatment 9
4.3 Flush holding tanks and water lines 9
5. Field—Sample Collection 12
5.1 Collection methods 12
5.2 Take samples immediately after flushing 12
5.3 Duplicate samples required 12
5.4 Visible bubbles 12
5.5 Collection method 1—Bottle 13
5.6 Collection method 2—Syringe 18
6. Field—Handling Samples 21
7. Actions Based on Test Results 22
7.1 Action level guidance 22
7.2 When results disagree 22
7.3 Mitigation methods 23
7.4 Post-mitigation tests 23
7.5 Mitigation maintenance and monitoring 23
8. Services—Reporting Results 25
8.1 Essential information 25
8.2 Measuement results 25
8.3 Field—Measurement results 25
8.4 Field—Deviations from protocol 25
8.5 Required guidance 26
8.6 Other health advisories 27
8.7 Field—Mitigation system status 28
8.8 Opinions and interpretations 28
8.9 Statement of test limitations 28
9. Services—Qualified Sample Collectors 29
10. Services—Qualified Laboratories 30
10.1 Criteria 30
10.2 General QA/QC 31
10.3 Quality control 31
10.4 Approved method 32
10.5 Intercalibration 32
11. Lab—Liquid Scintillation 33
11.1 Analytical measurement 33
11.2 Transfer methods 35
11.3 Calculations 37
11.4 Safety warnings and waste management 37
12. Lab—Alpha Scintillation Cell 38
12.1 Prior to transferring the sample 38
12.2 Transfer procedure 38
12.3 Moisture and airflow 39
13. EIC Method 40
13.1 Measurement procedure 40
13.2 Analysis procedure 41
14 Continuous Monitor 41
15. New Methodology 42
Exhibit—Water Collection Form 43
MW-RN Consensus Body Membership 45
MW-RN Companion Guidance 46
For the field 47
Technical background 48

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