ML18044A967

Offsite Airborne Iodine Monitoring Under Accident Conditions.

ML18044A967
Person / Time
Site:	Palisades
Issue date:	04/30/1980
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18044A959	List: ML18044A958 ML18044A960 ML18044A961 ML18044A962 ML18044A963 ML18044A964 ML18044A965 ML18044A966 ML18044A967
References
EI8-9, NUDOCS 8006040330
Download: ML18044A967 (5)

Text

• PALISADES NUCLEAR. PLANT llIERGENCY IMPLEMENTATION PROCEDURE PROC NO PAGE 1 EIB-9

• OF 5 TITLE i OFF SITE AIRBORNE IODINE MONITORING REVISION o consumers Power UNDER ACCIDENT CONDITIONS DATE 4/30/80.

REVIEWED BY APPROVED tNERAL MANAGE PRC - DATE 4/28/80 QA-05

~ lt°i DATE

1. 0. PURPOSE Toprovide a method to determine airborne iodine concentrations off site under accident conditions.

2.0 REFERENCES

2.1 NRC submittal for Palisades Plant, "Requirements Resulting from Review of Three Mile*Island 2 Accident: Actions Taken in Response to", dated December 27, 1979, Section 2.l.8.b(2).

3.0 PREREQUISITES 3.1 Special Equipment 3.1.1 Special equipment is located in a Company van reserved for use in.

environmental sampling, etc .. The van is located in the plant: parking. lot nea~ the Training- Center.

3.1. 2 Hfgh Volume Air Sampler - battery operated high volume air sam:pler,-Radeco model H-809C or equivalent, AC operated sampler (to be operated via portable generator); or equivalent.

3.1.3 . Two-inch.. particurate .. filter and cartridge holder ..

3.1.4. Airborne iodine cartridge (silver zeolite, silver gel, etc.).

~ . . '* . . . . .

3.1.S Rate.":leter wi:th Eber.line 210 pancake probe or equivalent,.

• .4.0 PRECAUTIONS. AND Lil!ITATIONS

. 4.1 Sampling locations and. frequencies will be determined by the Site .Emergency**

Direc.t.or depending on environmental conditions and population distriqud.ons.

Suggested locations are. indicated on Figµre l~.

4.2 s*ampling *may take place* in: highly contaminated areas.:.. Anti-c~ntamin~tion

• clothing and respirators may* be needed under these conditions.

s.o*

• PROCEDURE .

5.1 Sampling 5.1.l Disassemble sample head.

5.1~2 Clearly mark an arrow on cartridge in direction of air flmt*;,/QR~'Jl~Jlt~'l soofln 4 .o.

.@l*. .

PALISADES NUCLEAR PLANT PROC tlO EI8-9 EMERGENCY IMPLEMENTATION PROCEDURE . PAGE 2 OF s 1--~~~~---~_;_~~~~~~~~~~~~~~~~--1 TITLE~

OFF SITE AIRBORNE Ioo;rnE MONITORING REVISlON o consumers Power UNDER ACCIDENT CONDITIONS DATE 4/29/80

• ,,.,,I

. 5.1.3 Place cartridge in sample head with arrow in directio.n of air flow through the cartri_dge and reassemble sample head.

5~1.4 Place particulate pre-filter ~n place to prevent buildup of radioactive particulates on cartridge. Screw on retaining r~ng and attach sample head

.to air sampler .

5.1.5 .Turn on sampler and adjust air flow to 1. 0-2. 0 cfm. Note initial air flow reading and time.when sample collection started. A ten (10) minute sample should be taken.

5.1.6 At the end of 10-minute sample period, note airflow reading and time and turn off sampler.

5.1. 7 Remove cartridge frc.m sample head and place cartridge in polyethylene ba~.

Record: -

a. Date.

. b. Starting and ending tiu.e .

c~ **Initial and final air flow.

d. Location and include with cartridge.

5.2 Analysis 5.2.P Take carfridge to* low background ar.ea or use lead bricks to shield pr9b~ if background radiation levels exceed 300 c?m *

. *.* - .s~ 2.* 2 . Place:- probe: in contact with side away from arrow on cartridge.. Note reading on rate meter after meter has- stabilized*.: .

. 5.2. 3 If range of meter is exceeded, repeat air sample (section 5.1) but decrease sample time. to aEpro,..."i.mately one-half. af.. previous. sample time.**

5.2.4 Cal~ul~te ~irborne iodin~ concentrations using the following equation:.

. C =. (G. 7E-ll) (Rs-Rb) ts 1/2 (F1+Fz)

Where:

C = Concentration (uCi/cm 3 )

Rs = sample count rate (cpm)

., . ~ = background count rate (cpm) .

Fi = initial flow rate (cfm)

F2 = final flow rate (cfm)

I ts = elapsed sample time (minutes)

. *;-

Ii PALISADES NUCLEAR *PLANT

• EMERGENCY Il1PLEMENTATION !>ROCEDURE.

PROC NO PAGE EI8-9 3

• OF s TITl[j OF.F SITE AIRBORNE IODINE MONITORING REVISION O consumers Power .. mn>ER ACCIDENT C01'.TDITIONS DATE 4/29/80 5.2.4 (continued) 6.7E-ll =conversion factor accounting.for units and instrument and filter effici~ncy. --

5.2.S Record results and report to Site Emergency Director.

5. 3. Retain cartridges for gamma spectra analysis.

6.0 ACCEPTANCE CRITERL~

N/A 7.0 RECORDS AND ATTACffi-1ENTS 7.1 Figure 1 "Recommended Off site Sampling Location" 7.2 Data sheet for off site.airborne iodine sampling.

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• EI8-9 Rev. O Page 4 of 5 4/30/80

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4/30/80 DATA SHEE'-r FOR OF.F Sl'!':E AIRBORNE IOin'l1E SAMPLING

.  ; **-

1 DATE TIME SAMPLE.* SERIAL NUMB~R SAMPLE 'lNlTIAL FINAL BACKGROUND SAMPLE AIRBORNE

. LOCATION . COUNT_RATE MEtER TillE FLOW fLOW COUNT RATE COUNT RATE IODINE (MIN) HATE RATE (CPM) (CPM) CONC.

._----1----4--------1--- *----~-~---" . .J9J..l12 (CFML (Ci/m3)

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CALCULATED BY

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REVIEWED B~ HEALTH PH¥SiCIST

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