ML22200A269

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5Q1.2-302, Rev. 31, Proceduradiation Monitoring - Water Sampling Analysis
ML22200A269
Person / Time
Site: PROJ0734
Issue date: 02/02/2022
From:
Office of Nuclear Material Safety and Safeguards
To:
Harry Felsher, 301-415-6559
References
5Q1.2-302, Rev. 31
Download: ML22200A269 (9)
v • d • e


Text

RADIATION MONITORING Manual: 5Q1.2 Procedure: 302 Revision: 31 WATER SAMPLE ANALYSIS Effective Date: 02/02/2022 Type-Class: Tech-Ref Page: 1 of 9 Revision Log Pages Affected Description of Revision All This procedure has been updated to conform with the current procedure template.

2 Section 1.1 - Removed S/RID flagging and the following: This procedure implements Title 10, Code of Federal Regulations (CFR), Part 835.401, General Requirements (a and b).

Section 1.2 - Added the following to the Scope: Sample results using this procedure are only used to determine whether the water needs to be radiologically controlled to ensure worker protection. The results cannot be used to determine free release of water or compliance with any other acceptance criteria (i.e., offsite laboratory receipt limit, Department of Transportation criteria, etc.).

3 Section 3.1 - Changed Perform a job site review to A job site review shall be performed in the second paragraph.

4 Section 5.1 - Added Sample received date and time as a bullet in Step 4. Added sample in Step 7B.

5 Section 5.1 - Deleted the following sub-step of Step 11: REMOVE planchet from hot plate or heat lamp (this action occurs in Step 12). Changed Do NOT allow the planchet to become dry into a Caution for Step 11B3.

6 Section 5.1 - Deleted (in cpm or dpm, as appropriate) from the second bullet in Step 13A and from Step 13B2.

Section 5.2 - Moved a Step 3 note to Step 1 and changed Results for samples analyzed for tritium only shall be recorded on OSR 4-682; OSR 4-681 is not needed for these samples. to OSR 4-681 is not used to record results for samples analyzed for tritium.

7 Section 5.3 - Deleted bullets Correction factor(s), when applicable and Daily background in cpm, where applicable from Step 3. Deleted the following two sub-steps of Step 5 (counting systems providing results in cpm are no longer used):

  • WHEN using counting systems that provide results in cpm, THEN DETERMINE dpm value for both alpha and beta using the following formula located in the calculation space provided on OSR 4-681: (____Gross Counts ÷ ____Sample Count Time) - ____Bkgd (cpm) x ____CF = ____dpm.
  • WHEN using counting systems that provide results in dpm, THEN CHECK the N/A box in the unused calculation space on OSR 4-681.

8 Section 6.0 - Deleted the following references: 10 CFR 835.401, General Requirements, and [S/RID], Standards/Requirements Identification Document, 10 CFR 835, Occupational Radiation Protection.

Manual: 5Q1.2 Procedure: 302 Water Sample Analysis Revision: 31 Page: 2 of 9

1.0 INTRODUCTION

1.1 Purpose This procedure provides instructions for water sample preparation, tracking, and analysis for alpha, beta-gamma, and tritium contamination.

1.2 Scope This procedure applies to Radiological Protection (RP) personnel preparing and analyzing water samples to determine the concentration of alpha, beta-gamma, and tritium contamination on a timely basis.

This procedure applies primarily to water samples expected to be of low activity (e.g.,

environmental, release, small spills). It can be used for higher activity samples (e.g.,

confirmatory process samples, basin samples) with some exceptions.

Sample results using this procedure are only used to determine whether the water needs to be radiologically controlled to ensure worker protection. The results cannot be used to determine free release of water or compliance with any other acceptance criteria (i.e., offsite laboratory receipt limit, Department of Transportation criteria, etc.).

This is a Reference procedure. The user is not required to have this procedure present while performing the activity.

2.0 GENERAL INFORMATION 2.1 Definitions and Abbreviations Counting System - Any of the various counting systems available for use by RP which are specified in WSRC-IM-2005-00001, RME Technical Specifications Manual.

PHA - Pulse Height Analysis Sample Number - Unique and sequential to each RP facility (e.g., 01/01/92: 92-HC-001 for 200-H Canyon, 92-HTF-001 for 200-H Tank Farm, 92-K-001 for 100-K Area).

2.2 Responsibilities 2.2.1 Radiological Protection (RP) Personnel RP personnel are responsible for:

  • Following this procedure safely and correctly
  • Ensuring all procedure attachments applicable to their facility are present and completed.

Manual: 5Q1.2 Procedure: 302 Water Sample Analysis Revision: 31 Page: 3 of 9 3.0 PRECAUTIONS AND LIMITATIONS 3.1 Safety Comply with applicable Radiological Work Permit (RWP).

A job site review shall be performed prior to beginning work to ensure the scope of work is covered under individual hazard analysis.

Additional hazard analysis may be required to ensure facility/job specific hazards are identified and the appropriate actions are taken to eliminate/mitigate the identified hazard(s).

4.0 PREREQUISITES 4.1 Tools and Equipment

  • Tweezers
  • Graduated pipette
  • 5-milliliter (mL) pipette tips
  • 2-inch stainless steel planchets for 10-mL samples
  • 1.5-inch stainless steel planchets for 5-mL samples
  • Hot plate or heat lamp
  • Indelible marker
  • OSR 4-681, Water Sample Calculation Worksheet
  • OSR 4-682, Water Sample Analysis Data Sheet
  • OSR 4-690, Label: Caution Radioactive Material (large)
  • OSR 4-691, Label: Caution Radioactive Material (small)
  • Alpha and beta counting system
  • Applicable portable survey instruments 5.0 PERFORMANCE 5.1 Sample Preparation and Analysis (Alpha and Beta)
1. SURVEY sample container with portable instruments.
2. COMPLETE OSR 4-690 or OSR 4-691 label, AND PLACE on sample container.
3. ASSIGN next sequential number using OSR 4-682 (e.g., 01/01/92: 92-HC-001 for 200-H Canyon, 92-HTF-001 for 200-H Tank Farm, 92-K-001 for 100-K Area), AND WRITE sample number on top of OSR 4-690 or 4-691 label.

Manual: 5Q1.2 Procedure: 302 Water Sample Analysis Revision: 31 Page: 4 of 9 5.1 Sample Preparation and Analysis (Alpha and Beta), (cont.)

4. RECORD the following on OSR 4-681:
  • Sample number
  • Sample location
  • Sample date and time
  • Sample received date and time.
5. IF a sample probes greater than background, THEN ENSURE safe preparation of sample (e.g., evaporate sample in a hood for contamination control).
6. IF sample container probes less than 3E+4 disintegrations per minute (dpm) beta-gamma, THEN PREPARE AND ANALYZE a 10-mL sample.

A. IF a 5-mL sample is requested, THEN PREPARE AND ANALYZE a 5-mL sample also.

7. IF sample container probes greater than or equal to 3E+4 dpm beta-gamma, THEN A. NOTIFY RP First Line Manager (FLM).

B. SEND sample to appropriate laboratory for gamma PHA, gross alpha, and beta-gamma analysis, OR DISPOSE of sample as contaminated waste based on RP Management instructions.

1) IF sample was disposed as contaminated waste, THEN RECORD disposed of in Comments section on OSR 4-681.

C. WHEN sample results are received, THEN RECORD sample results on OSR 4-681.

8. APPLY a wet wipe, followed by a dry wipe, to a 1.5-inch or 2-inch stainless steel planchet.
9. MARK sample number on bottom of planchet with an indelible marker.
10. ENSURE pipette tip is changed between samples to prevent cross-contamination of samples.

Manual: 5Q1.2 Procedure: 302 Water Sample Analysis Revision: 31 Page: 5 of 9 5.1 Sample Preparation and Analysis (Alpha and Beta), (cont.)

11. PERFORM the following techniques, as applicable, to reduce potential for splattering sample on a hot planchet:

A. IF using a 5-mL planchet, THEN

1) PLACE planchet on hot plate or under heat lamp that is OFF.
2) PIPETTE 5-mL of the sample into a cool planchet.
3) TURN ON hot plate or heat lamp.
4) ALLOW sample to dry.

NOTE If using the 2-inch planchet, the entire 10-mL can be dispensed.

B. IF using a 10-mL planchet, THEN

1) PLACE planchet on hot plate or under heat lamp that is OFF.
2) PIPETTE 5-mL of the sample into a cool planchet.

CAUTION Do not allow the planchet to become dry. If the planchet becomes dry, introducing water droplets to a hot planchet could cause splattering, resulting in potential contamination of equipment and inaccurate sample analysis.

3) TURN ON hot plate or heat lamp.

a) IF planchet becomes dry, THEN ENSURE planchet cools sufficiently prior to introducing the other 5-mL of the sample.

4) PIPETTE remainder of sample into planchet as it evaporates until the entire 10-mL sample has been dispensed.
12. WHEN evaporation of the sample is complete, THEN A. REMOVE planchet from hot plate or heat lamp.

B. ALLOW planchet to cool.

Manual: 5Q1.2 Procedure: 302 Water Sample Analysis Revision: 31 Page: 6 of 9 5.1 Sample Preparation and Analysis (Alpha and Beta), (cont.)

13. PROBE planchet with portable survey equipment for alpha and beta-gamma radiation.

A. IF sample probes less than 1E+5 dpm beta-gamma and less than 4E+3 dpm alpha, THEN PERFORM one or both of the following, as applicable:

  • COUNT the 5-mL sample in the appropriate counting system(s) for five minutes, AND NOTIFY Control Room.
  • COUNT the 10-mL sample in the appropriate counting system(s) for ten minutes, AND RECORD results on OSR 4-681.

B. IF sample probes greater than or equal to 1E+5 dpm beta-gamma or greater than or equal to 4E+3 dpm alpha, which is above the contamination limit for the counting system, THEN

1) UTILIZE portable beta-gamma and alpha instruments to count the sample.
2) CALCULATE AND RECORD results on OSR 4-681.

5.2 Sample Preparation and Analysis (Tritium)

NOTE OSR 4-681 is not used to record results for samples analyzed for tritium.

1. RECORD the following on OSR 4-682 for tritium samples:
  • Sample number
  • Sample location
  • Sample date and time.
2. SEND samples to an approved Tritium Laboratory for analysis.

NOTE The following two steps only apply to C, K, and L Areas.

3. NOTIFY 105-K Central Control Room to have the sample recorded in SOP-SAMP-002-CKL, Sample Analysis Schedule and Control.

Manual: 5Q1.2 Procedure: 302 Water Sample Analysis Revision: 31 Page: 7 of 9 5.2 Sample Preparation and Analysis (Tritium), (cont.)

4. OBTAIN tritium results from previous shift, AND RECORD on OSR 4-682.
5. RECORD results, supervisory review, and custodian notification in a timely manner, AND NOTE all delays or discrepancies on a Radiological Survey and in the Facility Shift Turnover Log.

5.3 Sample Calculations

1. ENSURE counting system(s) is within the calibration period.
2. ENSURE daily source response and background checks have been completed.
3. RECORD the following counting system information on OSR 4-681 based on type of system used:
  • Radiation Monitoring Equipment (RME) Instrument ID
  • Calibration due date.
4. Using forceps/tweezers, PLACE planchet containing the sample in sample tray of counting system being used.
5. PERFORM a five- or ten-minute count of the sample, as required, for alpha and for beta.
6. ENTER dpm value in the space provided on OSR 4-681, AND COMPLETE calculations.
7. RECORD results for both alpha and beta analysis on OSR 4-681.
8. RECORD required data, as appropriate, on OSR 4-681.
9. CONTACT sample custodian with results, AND RECORD name of person contacted, date, and time on OSR 4-681.
10. IF water sample is greater than 3 dpm/mL (1.35 E-6 microcuries [Ci]/mL) alpha and/or 16 dpm/mL (7.2 E-6 Ci/mL) beta-gamma, THEN A. NOTIFY RP and Facility Management B. RESAMPLE water as instructed.

C. BARRICADE as Contamination Area (CA), if appropriate (e.g., puddle).

D. RECOMMEND clean-up/decontamination action to Facility Management.

Manual: 5Q1.2 Procedure: 302 Water Sample Analysis Revision: 31 Page: 8 of 9 5.3 Sample Calculations, (cont.)

Step 10, (cont.)

E. RECOMMEND Facility Management notify Environmental As Low As Reasonably Achievable (ALARA) Coordinator or Liquid Effluent Program Manager that reviewing the RAD Release Reports may be prudent.

11. RETAIN all samples that calculate greater than 3 dpm/mL alpha and/or 16 dpm/mL beta-gamma and all samples that initially probed greater than background, AND DISPOSE of samples as directed by RP Management.
12. RECORD results, supervisory review, and custodian notification in a timely manner, AND NOTE all delays or discrepancies on a Radiological Survey and in the Facility Shift Turnover Log.
13. REFER TO Manual 5Q1.2, Procedure 302A, Calculating Liquid Radioactive Releases, to calculate radioactive releases.

5.4 Post Performance

1. FORWARD each completed OSR 4-681 to RP FLM for review.
2. IF in a facility performing the tritium analysis only, THEN FORWARD OSR 4-682 to RP FLM for review.

6.0 REFERENCES

1B, 3.31, Records Management 5Q1.2, 302A, Calculating Liquid Radioactive Releases AHA ID: HCA-24735 SOP-SAMP-002-CKL, Sample Analysis Schedule and Control WSRC-IM-2005-00001, RME Technical Specifications Manual 7.0 RECORDS Records generated as a result of implementing this procedure are maintained in accordance with Manual 1B, Procedure 3.31, Records Management.

Facility Shift Turnover Log Radiological Surveys OSR 4-681 Water Sample Calculation Worksheet

Manual: 5Q1.2 Procedure: 302 Water Sample Analysis Revision: 31 Page: 9 of 9 7.0 RECORDS, (cont.)

OSR 4-682 Water Sample Analysis Data Sheet 7.1 Forms OSR 4-681 Water Sample Calculation Worksheet OSR 4-682 Water Sample Analysis Data Sheet OSR 4-690 Label: Caution Radioactive Material (Large)

OSR 4-691 Label: Caution Radioactive Material (Small) 8.0 ATTACHMENTS None

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