RRSOP 600 Series Radiological Surveys (Part 3)

Transcription

1 RRSOP 600 Series Radiological Surveys (Part 3) 15 th Annual OSC Readiness Training Program 0

2 RRSOP 603 Radiological Postings 15 th Annual OSC Readiness Training Program 1

3 RRSOP 603 Radiological Postings a.k.a Drawing the line in the sand 15 th Annual OSC Readiness Training Program

4 RRSOP 603 Radiological Postings Types of Postings Radiation Area High Radiation Area Contamination Area High Contamination Area Airborne Radiation Area 15 th Annual OSC Readiness Training Program 3

5 RRSOP 603 Radiological Postings Outdoor Areas LRE Radiation Area > 5 mr/hr High Radiation Area > 100 mr/hr 15 th Annual OSC Readiness Training Program 4

6 RRSOP 603 Radiological Postings 15 th Annual OSC Readiness Training Program 5

7 RRSOP 603 Radiological Postings 15 th Annual OSC Readiness Training Program 6

8 RRSOP 603 Radiological Postings 15 th Annual OSC Readiness Training Program 7

9 RRSOP 603 Radiological Postings Types of Postings Contamination Area High Contamination Area 1 X Table 1 10 X Table 1 Generally expected to be used indoors in an RDD event. 15 th Annual OSC Readiness Training Program 8

10 RRSOP 603 Radiological Postings Table 1 Allowable Surface Contamination NUCLIDE AVERAGE (dpm/100 cm2) MAXIMUM (dpm/100 cm2) REMOVABLE (dpm/100 cm2) U-nat, U-235, U-238 and associated decay products Transuranics, Ra-226, Ra-228, Th- 230, Th-228, Pa-231, Ac-227, I-125, I Th-nat, Th-232, Sr-90, Ra-223, Ra- 224, U-232, I-126, I-131, I Beta-gamma emitters except Sr-90 and others noted above th Annual OSC Readiness Training Program 9

11 RRSOP 603 Radiological Postings 552 dpm 595 dpm Average = 1309 dpm 725 dpm 21,233 dpm Average = 70,025 dpm 457 dpm 15 th Annual OSC Readiness Training Program 10

12 RRSOP 603 Radiological Postings 15 th Annual OSC Readiness Training Program 11

13 RRSOP 603 Radiological Postings 15 th Annual OSC Readiness Training Program 12

14 RRSOP 603 Radiological Postings Radionuclide Table 2 Derived Air Concentrations Derived Air Concentration ( Ci/ml) Post at 25% of DAC ( Ci/ml) Am E E-12 Co E E-09 Cs E E-08 Ir E E-08 Ra-226* 2.00E E-11 Sr E E-09 Th E E-13 Po E E-11 U E E-11 U E E th Annual OSC Readiness Training Program 13

15 DAC Values for Selected Radionuclides Beta Isotopes uci/ml (dpm/cf) Alpha Isotopes uci/ml (dpm/cf) Co-60 1(10-8 ) Ra-226 (α) 3(10-10 ) βγ (628.3) αβγ (+d) (18.8) Sr-90 2(10-9 ) Pu-238 3(10-12 ) β (125.6) α (0.188) Cs-137 7(10-8 ) Pu-239 2(10-12 ) βγ (4398) α (0.126) Ir-192 9(10-8 ) Am-241 2(10-12 ) βγ (5654) αγ (0.126) 15 th Annual OSC Readiness Training Program 14

16 RRSOP 603 Radiological Postings 15 th Annual OSC Readiness Training Program 15

17 15 th Annual OSC Readiness Training Program 16

18 RRSOP 604 Operational Surveys 15 th Annual OSC Readiness Training Program 17

19 RRSOP 604 Operational Surveys Performed in areas with ongoing mission NOT Remediation Areas NOT unknown or uncharacterized areas Contamination tracking/status assessment WWTP Roadways LRE Example? Waste Pits Monitor Sources (filters, sludge pits) Monitor Influents, Effluents 15 th Annual OSC Readiness Training Program 18

20 RRSOP 604 Operational Surveys Meter is QC d - Checks out Good Step 1 Background Measurement Same material as you expect to measure (only clean) Clariflocculator tank Asphalt Roadway Tile Floors Concrete Jersey Bouncer Granite Building Gypsum Wallboard 15 th Annual OSC Readiness Training Program 19

21 RRSOP 604 Operational Surveys Step 2 Do your homework! Determine areas that may have been impacted. Monitor areas that were previously monitored. Monitor entrances/exits/inlets/outlets & frequented Monitor random areas that haven t been monitored. 15 th Annual OSC Readiness Training Program 20

22 RRSOP 604 Operational Surveys Step 3 What to measure. Radiation levels with R/hr meter Contamination levels with appropriate meter (cpm) If > than Table 1 removeable values, take a smear (RRSOP 403) 15 th Annual OSC Readiness Training Program 21

23 RRSOP 604 Operational Surveys Step 4 Radiation Area Surveys Radiation levels w/ R/hr meter as in RRSOP 603 The KEY is to note differences from previous surveys and report to RSO or HP. Survey for contamination inside Rad/High Rad areas. Take smear surveys if unexpected contamination is indicated. 15 th Annual OSC Readiness Training Program 22

24 RRSOP 604 Operational Surveys Step 5 Contamination Area Surveys Take Contamination Surveys per RRSOP 403 Survey suspect areas, previously surveyed areas inside the posted area. Survey just outside of posted area. Report unexpected results assess for removable. 15 th Annual OSC Readiness Training Program 23

25 RRSOP 604 Operational Surveys Step 6 High Contamination Areas/ Airborne Radioactivity Areas Take Contamination Surveys per RRSOP 403 Same survey requirements as Contam. Area Plus conduct air sample routinely RRSOP 501. AS ALWAYS - Report unexpected results! 15 th Annual OSC Readiness Training Program 24

26 RRSOP 604 Operational Surveys Step 7 Media Sampling/Bulk Sampling Take Soil and Vegetation at same spot. Avoid sampling beneath overhangs Take air samples at twice the height away Take water samples per instructions at discharge, mixing zone, etc. 15 th Annual OSC Readiness Training Program 25

27 RRSOP 604 Operational Surveys References RRSOP 501 Air Sampling RRSOP 502 Surface Soil Sampling RRSOP 503 Subsurface Soil Sampling RRSOP 504 Sediment Sampling RRSOP 505 Water Sampling RRSOP 506 Vegetation Sampling 15 th Annual OSC Readiness Training Program 26

28 RRSOP 604 Operational Surveys 15 th Annual OSC Readiness Training Program 27

29 RRSOP 609 Management at Control Points 15 th Annual OSC Readiness Training Program 28

30 List of Procedures Integrated Work Permit Posting Areas for Radiological Hazards Operational Surveys Final Status/ Release Surveys Remediation Surveys Material Release Surveys Characterization Surveys Management at Control Points Personnel and Equipment Decon/ Survey Dose Tracking 15 th Annual OSC Readiness Training Program 29

31 Control Point Located at the entry to the control zone near the exit from the control zone Instrumentation available Monitoring instruments with ratemeter/ integrated count capability Ludlum or 2929/ 3030 Appropriate check sources Supply of forms Current copy (Rev) of applicable IWPs 15 th Annual OSC Readiness Training Program 30

32 Worker Dose Monitoring Analogy Direct deposit (retirement) TLD Dosimeter Direct deposit (spouse) Direct Withdrawals (Insurance) Working in Airborne Area Work in Controlled Area ATM withdrawal Checking Account >0? Direct deposit (Work) EPD Worker Dose <limit? Bioassay Incidentals (Final 4 Tickets) Expenses (Spouses Checkbook) Work in HRA Work in Contamination Area Cash deposit (personal Services) Representative Air samples 15 th Annual OSC Readiness Training Program 31

33 RRSOP 609 Management at Control Points General Operations for CP Stage Required Equipment Update Status Documents Communicate w/ other control points. Report overexposures to RSO Maintain documentation Enforce the Buddy System 15 th Annual OSC Readiness Training Program 32

34 At the Control Point Monitor all items leaving the site for contamination (total and removable) Issue receipts for items that are confiscated awaiting survey results Assist in sample transfer from the area Set up, program, respond to the portal monitor Issue, retrieve and read dosimeters and personal air samplers Conduct medical monitoring Support activities at the decon line Complete and forward documentation 15 th Annual OSC Readiness Training Program 33

35 RRSOP 609 Management at Control Points Control Point Access Workers will: Stop prior to entry Present Papers work authorization etc. Present Creds Training, resp. etc. Verify required tools PPE, dosimetry, instruments, radios Work related tools or equipment 15 th Annual OSC Readiness Training Program 34

36 RRSOP 609 Management at Control Points CPP will: Pre-job Briefing Identify IWP, sign in and review Provide pre-job briefing-conditions Verify Respirator Creds. Minimize property into C.Z. Determine stay time - plan accordingly Issue Required Equipment, PPE 15 th Annual OSC Readiness Training Program 35

37 RRSOP 609 Management at Control Points CPP will: Document, Document, Document Verify entries on the LI/LO/DT form Prepare Personal Property Receipt Report Dose Tracking Results Daily 15 th Annual OSC Readiness Training Program 36

38 RRSOP 609 Management at Control Points Control Point Egress in 4D Doff, Detect, Decon, Document Remove PPE Monitor for Contamination Decontaminate as necessary Document time out and EPD data 15 th Annual OSC Readiness Training Program 37

39 RTFL at the Control Point Maintain awareness of changing conditions in the area Maintain map/ sketch of the area Survey personnel departing the area Contamination Injuries, scrapes, wounds Maintain awareness of conditions at the Control Point Post or change postings if necessary Direct decon activities if necessary 15 th Annual OSC Readiness Training Program 38

40 RRSOP 609 Management at Control Points Control Point Finale Review/Complete LI/LO/DT form Complete Section II (calculate s) Report doses to IC 15 th Annual OSC Readiness Training Program 39

41 RRSOP 609 Management at Control Points 15 th Annual OSC Readiness Training Program 40