ML18044A963

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In-plant Airborne Iodine Monitoring & Thyroid Blocking Agent Administration Under Accident Conditions.
ML18044A963
Person / Time
Site: Palisades Entergy icon.png
Issue date: 04/29/1980
From:
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18044A959 List:
References
EI8-5, NUDOCS 8006040318
Download: ML18044A963 (5)


Text

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. - -. PALISADES NUCLEAR PLANT EMERGENCY IMPLEHENTATIONPROCEDURE PROC HO EI8-5 PAGE 1 OF 5

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( IN-PLANT AIRBORNE IODINE HONITORiNG REVISION o consumers Power TITLE i AND THYROID BLOCKING AGENT ADMINISTRATION UNDER ACCIDENT DATE 4/29/80 REVIEHED BY GENERAL 't-~fGER PRC - DATE 4/25/80 QA-05

~/ ~{?..-b DATE 1.0 PURPOSE To provide a method of determining airborne iodine concentrations in areas within the plant and administration of thyroid blocking agents under accident conditions.

2.0 REFERENCES

2.1 Letter from HRDenton (USNRC) to All Operating Nuclear Power Plants, dated, October 30, 1979.

2.2 Letters dated December 15, 19n and January 4, 1980 from Dr. J.w.*Rice, CP Co Medical Consultant 2.3 10CFR20 2.4 NCRF Report 55; Protection of the Thyroid Gland in the Event of Releases of Radioiodine.

c~. 3. () . PREREQUISITES 3.1 Special Equipment 3.1.1 Special equipment is located in the Technical Support Center *.

3.1.2 High volume! air sampler - i f power .to electrical receptacles has failed, use battery operated high volume air sampler (Radeco Model E-809C or equi'l;alent) or initie.te O?e!"2.ti.cn of a portable gas powerf?d generator.

3.1.3 Two-inch particulate filter and iodine cartridge holder.

. 3 .1. 4

  • Airborne iodine cartridge--* (silver zeo!ite,
  • silver gel~ etc.)~.

3 .1. 5.. Ratemeter with Eberline- 210 pancake- probe. or. equivalent. -

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  • PRECAUTIONS AND Lil1ITATIONS __

4.1 - Sampling shall take place- in the Tec;h~:rca.l *Suppo~t C:~ter,. Control:.Room>-

Op~rations Support Center,.. Lunchroom*,.. Main~ Locker Room*~_ Training Center,.

Security Building and .any_ _oth~r ar~~ --~ee!.11ed ne_~es~_a.!~_l:~)' the Health Physicist or Site Emergency Director.

  • 4.2 Sampling shall take place at an appropriate frequency established by the Health Phy~icist or any o~her time the Health Physicis~ deems necessary.

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PALISADES NUCLEAR PLANT EMERGENCY INPLEMEN'.f.ATION PR,OCEDUR,E

  • PROC tlO
  • JU8-5 PAGE 2 OF 5 IN-PLANT AIRBORNE IODINE HONITORING REVISION O consumers Power TITLE; AND THYROID BLOCKING AGENT ADHINISTRATION UNDER ACCIDENT CONDITIONS DATE 4/29/80 f~...,...-...,...-...,...-,_--...,...-...,...-...,...-...,...-_.L...,...-...,...-...,...-...,...-,--...,...---'...,...----...,...-.;__~...,...-__:...,...-~...,...-...,...-...,...-,--~--I....,...-...,...-...,...-~-:---...,...-...,...-~-*

4.3 Individuals with a known or suspected iodine allergy are to be provided with a substitute thyroid blocking agent.

4.4 Substitute agents are also to be issued to individuals exhibiting side effects of potassium iodine. These effects include skin rash, swelling of salivary glands, n\ettalic taste with possible burning in mouth or throat,sore teeth and gums, symptoms of head cold, stomach upset. and diarrhea, and allergic reactions with fever and joint pains. These side effects may not be evident until 10 days on continuous use.

5.0 PROCEDURE 5.1 Sampling 5.1.1 Disassemble sample head.

5.1. 2 Clearly mark an arrow on cartridge in direction of air flow.

  • s..1.3 Place. cartridge in sample head with arrow in direction of air fl,)W through the cartridge and reassemble sample head.

5.1.4 Place particulate pre-filter in place to p~avenc b~ildu; of raaioac~~ve particulates on cartridge. Screw. on* retaining*ring and attach sample*:

head to air sampler.

5.1.5 Turn on air sampler and adjust air flow to 1.0-2.0 cfm. Note initial air 1

t flow reading and time sample collection starced_ A ten (10) minute sample i

t. should be taken;

.,i 5.1. 6 At the end of 10-minute sample period note air flow reading and*time and turn off sample.

L 5.1. 7 Remove cartridge from sample head and place cartridge in polyethylene bag.

Record:. ***

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1 b *. S~arting and ending.time. . -* *_:::*:**.

j ... ~ :. ** . . *: -.*::-~-:t*!-**~-:a:-: .. :

J.* . c. Initial .and Unal air flow *.

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. ~ ... *... .** .. : . *~ *. .. :.*..

d. - Location. * *. *.* ..

I 1 and include with cartridge.

5.2 Analysis 5.2.1 For accurate determination of airborne concentrations, *the cartridge should be analyzed on gamma spectrum analysis equipment if available.

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PALISADES NUCLEAR PLANT PROC NO Ei8-5 r @

consumers Power EMERGENCY IMPLEMENTATION PROCEDURE IRBORNE IODINE MONITORING TITLE~AND THYROID BLOCKING AGENT ADMINISTRATION UNDER ACCIDENT CONDJTIONS PAGE 3 REVISION o.

DATE 4/29/80 OF 5 5.2.2 In the event that gamrn~ spectrum analysis equipment is not available, a rate meter and pancake probe can be used to estimate airborne iodinP-*

.concentrations.

a. Take cartridge. tl low background are.a or . use lead bricks to shield. the probe if background radiation levels exceed 300 cpm.
b. Place probe in contact with side away from arrow on cartridge. Note reading on rate meter after meter has*stabilized.
c. _If range of meter is exceeded, repeat air sample (section.5.1) but decrease sample time to approximately one-half of previous sample time.

d *. Calculate airborne iodine concentrations using the following equation:

c= (6 *.7E-ll) (Rs-Ro) ts

~(F1+F2)

  • Where:

C = Concentration(UCiicm 3 ) .. :: ..:*

Rs = Sample count rate (cpm)

Rb Background count rate (cpm)

F1 = Initial flow rate (cfm)

  • F2 = Final flow rate (cfm) ts = elapsed sampling time (minutes) 6.7E_:.ll = ~onversion factor accounting for units and instrument and filter efficiency.
5. 2. 3 . Record re1rnlts and rep.ox_t to Site Emergency Director*~

'. 5.2.4 .Retain cartridges for*future analys:rs.

5. 3 . Blocking Agent Administration 5.3.1 If the measured radioiodine concentration exceeds LOE-7 uCi/cm 3 ,. thyroid blocking agents and respiratory protection deviaea.~ill be issued.

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PALISADES NUCLEAR PLANT

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PROC NO EX8-5 EMERGENCY IMPLEMENTATION PROCEDURE PAGE 4 OF5

~ TITLE i IN-PLANT AIRBORNE IODINE HONITORING AND REVISION o consumers Power

  • THYROID BLOCKING AGENT ADMINISTRATION DATE 4/29/80 Ut-.TDER A 5.3.2 Blocking agent is in the form of 130 mg potassium iodide (KI) tablets and are available from emergen~y kits or the Health Physicist. Tablets should be taken at the rate of one tablet per day for a maximum of 10 (ten) consecutive days.

5.3.3 .Substitute blocking agents will be available from the Health Physicist who maintains records of individuals with known or suspected iodine allergies.

Substitute agents may vary based on need, availability and physician's advice.

5.3.4 Blocking agents may be issued as late as 3 to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> following exposure.

5.3.S Individuals exposed to airborne iodine levels exceeding l.OE-7uCi/cm3 will be advised they may use the blocking agent which has been issued but are

  • not r~quired to do so. Respiratory protection devices shall be used by those individuals who may receive further exposure.

ACCEPTANCE CRITERIA N/A 7.0 RECORDS AND ATTACHMENTS . ' ...

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7.1 Data sheet for in-plant airborne iodine sampling.

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  • 5 of 5 .

/29/80 ...

  • nata: Sheet for In-Plant Airborne lodine Sampling DATE TIME SAMPLE SERIAL NO. OF SAMPLE INITIAL. FINAL BACKGROUND SAMPLE . AIRBORNE LOCATION RATE METER .TIME FLOW (cfm) FLOW (cfm) COUNT RATE COUNT RATE I

IODINE CONC.

(min) (cpm) (cpm) (uCi/lcm 3 )

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Calculated by*.

RE.~v:lewed by Heaith ------~-~-------~

Physicist_ _ _ _ _ _ __