ML20024B972

Public Version of Revised Emergency Plan Implementing Procedures,Including Procedures Qep 330-0 Re Assessment Actions & Qep 330-11 Re Estimation of I-131 Release by Field Team Measurements.Revised Index Encl

ML20024B972
Person / Time
Site:	Quad Cities
Issue date:	06/30/1983
From:	Gerner L, Kovack T COMMONWEALTH EDISON CO.
To:
Shared Package
ML20024B969	List: ML20024B972
References
PROC-830630-01, NUDOCS 8307120068
Download: ML20024B972 (6)

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QEP 330-0 R2 vision 16

. Juna 1983 ID/10;1P ASSESSMENT ACTIONS jrs s 330-0

() Assessment Actions Rev. 16 06-03-83 330-1 Abnormal Personnel Exposure Rev. 3 08-10-81 330-2 Accidental Release of Radioactivity .

Within the Site Boundary Rev. 2 02-22-81 330-3 SPING Control Terminal Operation Rev. 4 09-23-82 330-4 Estimation of Off-Site Dose from an Unplanned Release of Radioactive ,-

Effluents Rev. 1 12-17-80 330-5 Estimating High Activity Releases during Accident Conditions Rev. 1 12-17-80 330-6 Air Sampling Under Accident Conditions Rev. 3 10-18-82

. 330-7 In-Plant Iodine-131 Measurement During Post-Accident Conditions Rev. 5 10-18-82 .

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330-8 Handling and Analysis of Post Accident Reactor Coolant Samples Rev. 5 10-18-82 330-9 Estimating Plant Release Using the Stack Gas Monitors Rev. I 12-17-80 330-10 On-Site Environmental Samp' ling During Emergency Situations Rev. 2 10-18-82 330-11 Estimation of I-131 Release by Field Team Measurements Rev. 1 06-03-83  ;

330-51 j Iodine Concentration Worksheet Rev. 1 06-03-83 330-T1 3-....

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QEP 330-0 Rzvision 16 ',,

330-T2 Dose Factors for Gaseous Releases- Rev. 2 03-10-82 330-T3

! Dose Factors for Liquid Releases Rev. I 12-17-80 '

330-T4 Main Chimney Release Rate Table Rev. 1 12-17-80 330-T5 Typical Gas Stack Monitor Calibration Curve Rev. I 12-17-80 330-T6 Sample Cave .

Rev. 1 05-18-81 330-T7 Sample Dilution Equipment Rev. 1 05-18-81 330-T8 On-Site Environmental Sampling Locations Rev. 1 06-01-82 330-T9 i

Area Radiation Monitor System Rev. I 10-18-82

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QEP 330-11 Revision 1

(~5 , ESTIMATION OF I-131 RELEASE May 1983 BY FIELD TEAM MEASUREMENTS ID/1H A. PURPOSE The purpose of this procedure is to make a quick estimate of iodine releases from field team measurements.

B. REFERENCES

1. None.

C. PREREQUISITES

1. Plastic bags.  :

2. Air sampler.

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3. Charcoal or Silver Zeolite cartridges.

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4. Pulse rate meter with HP 210 probe.

C. C. d. R.

, , , 5. Labels.

D. PRECAUTIONS

1. To prevent contamination of the probe all samples should be placed in a plastic bag prior to counting.

2. Count sample cartridges with the sample inlet side towards the detector.

E. LIMITATIONS AND ACTIONS

1. Minimize the amount of non-iodine activity in the esmple by using silver zeolite cartridges if possible.

2. If background activity is high, shield the sample or transport it to a lower background area for counting.

3. Counting geometry for this procedure is with the sample cartridge setting on a firm surface (in a plastic bag) with the flow inlet side facing up and placing the HP 210 detector probe on the cartridge.

This should be done in a shielded sample holder if one is available.

F. PROCEDURE

1. Obtain the air sample from the desired location in accordance with station or environs group procedures.

2. Identify the sample inlet or note the direction of flow through the sample cartridge.

QEP 330-11 ,

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Rtvision 1

3. Place the sample in a small plastic bag and label with the following info rmation:

Sample location Sampled by Time on Flow on Time off Flow off 4- Count the cartridge with the. sample. inlet side facing the detector.

Be-sure to wait a sufficient amount of time for the count rate-to stabilize.

NOTE Samples are to be counted in as low as a background area as possible.

5. Remove the sample cartridge and determine a background count rate. Be sure to wait a sufficient amount of time for the count rate to stabilize.

6. Determine the net count rate by subtracting the background count rate from step F.5. from the sample count rate in step F.4.

7. Determine the sample volume using the following method:

(rate) (time) (2.832 E4 ml/ft3 ) = ml where rate = average sample flow rate in ft / min 3 time = time' during sampling in min.

2.832 E4 = conversion factor

8. Determine the Iodine-131 concentration from the following method:

dpa pCi 1 gCi (epm) (1.8E-2 cpm) 2.22E6 dpm ) al) ml when eps = net count rate from step F. 6.

dpm/1.8E-2 epm = efficiency factor pCi/2.22E6 dpm = conversion factor '

31 = sample volume from step F.7.

9. Report the results of the analysis to Radiation / Chemistry Supervision.

10. Save the sample for fur.ther analysis.

G. CHECKLISTS

1. QEP 330-SI, Iodine Concentration Worksheet.

H. TECHNICAL SPECIFICATION REFERENCES t . -

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• IODINE CONCENTRATION WORKSHEET May 1983

(~'N Sample location Sample Date Sampled by Time on Flow on Time off Flow off Sample count rate cps Background count rate epa Net count rate eps Volume of Sample (rate) (time) (2.832 E4 ml/ft3 ) = ml where rate = average sample flow rate in ft / 3 min time = time during sampling in min.

2.832 E4 = conversion factor X X 2.832E4 ml/ft3= ml Iodine-131 Concentration dpm pCi 1 pCi (cpm) (1.8E-2 eps) 2.22E6 dpm ) ml) _ ml where epm = net count rate from step F.6. ,

dpm/1.8E-2 epm = efficiency factor pCi/2.22E6 dpm = conversion factor .,> -._.s

.v ml = sample volume .

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