ML20028F777

Public Version of Revised Emergency Plan Implementing Procedures 1004.2, Alert & 1004.31, Airborne Radioactivity Sampling & Analysis.

ML20028F777
Person / Time
Site:	Three Mile Island
Issue date:	01/03/1983
From:	GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20028F772	List: ML20028F775 ML20028F777
References
PROC-830103-01, NUDOCS 8302040198
Download: ML20028F777 (14)

Text

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. 1004.2 Revision 8 I IMPORTANT TO SAFETY NON-ENVIRONMENTAL IMPACT RELATED THREE MILE ISLAND NUCLEAR STATION UNIT NO. 1 EMERGENCY PLAN IMPLEMENTING PROCEDURE 1004.2 -

ALERT Table of Effective Pages Page Revision Page Revision Page Revision Page hRevision 1.0 7 31.0 7 2.0 7 32.0 7 3.0 7 33.0 7 4.0 8 34.0 7 5.0 7 6.0 7 7.0 7 8.0 7 9.0 7 Q 10.0 7 11.0 7 12.0 7 13.0 7 N 14.0 7 15.0 7 16.0 7 17.0 7 18.0 7 19.0 7 20.0 7 21.0 7 22.0 7 23.0 7 24.0 7 25.0 7 26.0 7 27.0 7 28.0 7 29.0 7 30.0 7

% M L/ Signature'

/ 3ld3 Date l Signature Date Document ID: 0024W hh $NC 0 F e

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. 1004.2  !

Revision 8

g. A valid increase by a factor of 100 of atmos-pheric activity as - ~

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. detemined by sample and analysis.

• 3.11 Any fire jeopardizing the As judged by the Shift operability of any safety system Supervisor.

3.12 Most or all annunciators lost As judged by b h ft which may involve an actual or Supervisor.

potential substantial degradation of the level of safety of the plant.

3.13 Radiological effluent activity As J6d ed by any of the exceed the Environmental technical fpiljwingNalidated by sample specification i 't'alianeous limits. and anajysis:

" RM-A8 (gas) > 2.0 x 104 pm (High alim) but <

0 \b c.

1.0 x 105 cpm.

RM-A9 (gas) > 4.5 x 104

' xcpm {high alam) but <3.0 10 cpm.

RM-A5 >.1.0 x 106 cpm.*

d. RM-A8 Tiodine) increase > ~

8.5 ( 102 cpm 4.5 x 10Depm/ min but <

/ min.*

O e. Jodine) increase >-

03 cpm /mi' but <

04 cpm / min.*

Of- ite Radiological nitoring Team report >

10 mR/hr (gamma) but <55 0 mR/hr location.

at any offsite

g. RM-L7 > 1 x 103 cpm (high alam).

h. RM-G8 > 6.0 x 103 mR/hr.

3.14 Ongoing security compromise. Shift Supervisors judgement, based on advice of Security Duty Sergeant.

3.15 Severe natural phenomenon As indicated by any one of the being experienced. following:

a. Valid alann on PRF 1-3,

" Operating Basis Earth-i quake".

l 4.0

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1004.31 Revision 5 01/03/83

( IMPORTANT TO SAFETY NON-ENVIRONMENTAL IMPACT RELATED THREE MILE ISLAND NUCLEAR STATION UNIT NO. 1 EMERGENCY PLAN IMPLEMENTING PROCEDURE 1004.31 AIRBORNE RADI0 ACTIVITY SAMPLING AND ANALYSIS ,

Table of Effective Pages Page Revision Page Revision Page Revision Page Revision 1.0 2 2.0 5 3.0 5 4.0 5 5.0 3 6.0 3 7.0 3 ,

8.0 9.0 5

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10.0 5 11.0 5 .

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O Signature

1. Date

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tLa V Signature

} f3lcR3 Date Document ID: 0018W l

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, 1004.31 Revision 2 THREE MILE ISLAND NUCLEAR STATION (r

UNIT N0.1 EERGENCY IMPLEENTING PROCEDURE 1004.31 AIRBORNE RADI0 ACTIVITY SAWLING AND ANALYSIS 1.0 PURPOSE The purpose of this procedure is to define the method of air sampling and analysis for Airborne Radioactivity in areas both in-plant and out-of-O plant during an emerger.y.

The Radiological Assessment Coordinator is responsible for implement ng this procedure.

2.0 ATTACHMENTS

}

2.1 Attachment I, Airborne Rad Q Sampling lysis Data Sheet.

2.2 Attachment II, ple Nomog h 2.3 Attachment III, Pa late Air agraph 2.4 Attachment IV, Minimum De ab ioiodine 1 ph.  !

l o 3.0 EERGENCY ACTION LEVELS 3.1 This procedure mplemente ny e during any class of declared g when a p ctual release of radio-acti environment or 3.2 As d by the Emergency Director, Radiological Assessment Coordinator or their designee.

4.0 EERGENCY ACTIONS INITIALS 4.1 Emergency Equipment Required to be available for use:

4.1.1 SAM-II/RD19 Detector Probe 4.1.2 Radeco H-809 Air Sampler 4.1.3 Stopwatch 1.0

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1004.31

Revision 5

'( ' INITIALS 4.1.4 GY_130 Silver Zeolite Cartridge 4.1.5 Particulate Filter 4.2 SAMPLE COLLECTION FOR OUT_OF_ PLANT AREAS 4.2.1 For particulate and radiofodine sampling, insert a radiofodine cartridge (silver zeolite) with the arrow in the direction of air flow and particulate filter in the Air Sampler unit holder wit fibrous glass backing side of the pa ter facing tow (ph ampler. Th i filter must r of the ca e 4.2.2 ters in 1 I) he flow selector sw on the , unit to ariable and adjust t o s not to i 2 CFM (-60 li un the s r i or sufficient hbtaina o (10) cubic feet E5 cc). E mple time and volume on the data sheet. .ically check the air flow indica.

tor while the sampler is running.

NOTE: A minimum of ten (10) cubic feet (-3E5 cc) is re.  :

quire to obtain an MDA of IE_8 pCi/cc. The larger  :

the sample, the lower the MDA will be.  :

l 2.0 1

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1004.31 )

. Revision 5 '

3 INITI/LS 4.2.3 To set up the Sam II, perform the following steps.

a. Check settings on the SAM-II unit to comply with the calibration label except that the -

threshold must be set at 3.60 for both sample and source counts.

b. Set the Scaler display switch to "0N", Count Mode to "2", "XI", " timed".

NOTE: This will set the SAM.II for a 2 minut u r  :

high radioiodi ple count rates i

d on  :

the count rat ower coun e y  :

be used. __ :

n the de et e front panel of the l

d. Tur po switch "O c he stabilizer

, allow u ize for approxi-

N0 ot count the , the background, or a sample :

ile the air sam is running. While counting the :

sample or background ensure that the check source is :

at least five (5) feet from the SAM-II probe.  :

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l 3.0

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. 1004.31 Revision 5 l l

(' 4.3 SAMPLE ANALYSIS INITIALS 4.3.1 Prior to counting the first sample, count a back_

ground with the SAM.II set _up in the mode defined in l

step 4.2.3. Count background whenever radiological conditions have changed or are suspected to have changed at the counting location. Count background after changing locations.

NOTE: If the CAM _II u s stable and not he  :

plume or a hi und area, c d count :

should be counts p 'n  :

4.3.2 envel ope b ecessary infoma-ti .e., da e ume, lo ation, and person taking sa . remove t ,

fiofodine cart-O ri ulate f o e air sampler p ace th u filter disc in the n envelop unting and analysis.

1 Count and an ;he particulate filter in accor_

dance with RCP 1605. Particulate air samples will then be saved for subsequent GeLi analysis at U_1 Rad Con Lab or the EACC.

NOTE: A more rapid detemination of airborne particulate  :

radioactivity may be made using the AIRBORNE  :

PARTICULATE SAMPLE NOM 0 GRAPH, ATTACHMENT III.  :

4.3.3 Place the radiofodine cartridge in the SAM _II shield chamber with the upstream side facing the detector, i

and count the sample for two (2) minutes. (Or less if the high count rate is indicated for the sample.)

4.0

l I

l

• 1004.3L  !

Revisicn 3 i s

fr'

NOTE: If problems are encountered with the Sam II while  :

counting, check the following:  :

1. Power supply and connections.  :

2. Physical damage and proper probe connections.  :

3. Adjustments and settings per 4.2.3.a.  : .

4. Response to provided source.  :

4.3.4 Record the serial number of the SAM-II, counter factor (as indicated on the SAM-II), background count rate, and count time on the sample da sheet. ( Att. I) .

) _______

NOTE:

The " Count Fac Q sted on the

• orates :

counting ef ometry f ctivity  :

conversio or  :

4.3.5 ounting sa , the iodine sample cou s and c e on the 'a sheet.

(- 4.3.6 Calcul @ otodine tivi use of the da +

nomogra gross count rate of le is lo ( han 2 X background) culate th etectable Count Rate (MDCR).

If the MDCR is eater than the sample count rate, use the MDCR for activity calculations.and report the measured activity as less than this activity.

MDA for radiof odine samples raay also be obtained by use of the Minimum Detectable Radiofodine Activity Nomograph ( Att. IV) .

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1004.31 I

. . Revision 3 I

( $ 50TE$ knakysks of akk sampkes may be perfonted by use of

the THI Unit 1 GeLi/MCA system in accordance with  :

SCP 1958.3, the THI-Unit 2 GeLi/MCA unit, or the  :

GeLi/MCA unit operated by the Environmental  :

Assessment Section.  : .

____~_....___..._______________________________________________________

NOTE: A more rapid determination of radioiodine concen-  :

tration may be made using the AIRBORNE IODINE SAMPLE  :

NOM 0 GRAPH, ATTACHMENT II.  :

4.3.7 For dose calculations due to off-site rad releases, refer to EPIP 1004.7.

p ___________ _________

NOTE: If during ___is, the e vi ty  :

exceeds t i of the in t ing used,  :

(i.e. t rate), the following  :

alt be used by the RAC:  :

a. the samp1 lu  :

b. U e differ n geometries  :

c. U ize cou i mentatio i th lower  :

(-  : efficien en 1 ty  :

.__________.____________. p. ______________ . ______________

4.3.8 Pl .ples in a astic bags and label les with t , time, location and culated a return all samples taken to the OSC and giv to the Rad Con Coordinator.

4.4 In-P t air sampling for Radioactive Gas shall be performed in accordance with RCP 1607 with care to problems expressed in the note below 4.3.7.

6.0 F

1004.31 Revision 3 4.5 In-Plant air sampling for Radioactive Iodine shall be performed in

((

accordance with RCP 1605 with care to problems expressed in the note below 4.3.7.

.N0TE: A more rapid determination of radiof odine concen-  :

tration may be made using the AIRBORNE IODINE SAMPLE  :

NOM 0 GRAPH, ATTACHMENT II.  :

4.6 In-Plant air sampling for Radioactive Particulates shall be -

formed in accordance with RCP 1605 with care to problem d in 4.3.7.

________.__________________._ _AG> ____________ _ __________

NOTE: A more rap et ion of ne p ticulate  :

radioacti .

made ust ORUE PARTIC-  :

ULATE I iOGRAPH, AT I.  :

4.7 All air samples s be han i dance wi RCP 1605.1.

( 4.8 Post accident sampling ac ontainne shall be per-formed in accorda t 1631. S 1 n deration should be given to t M 1 for ver r tion and contamination levels o amp nd sampi i. 1 .

TIO Obtaining a reactor containment atmospheric sample  :

Ty after an accident may involve high levels of gaseous  :

v and particulate activity. Special precautions as  :

outlined in EPIP 1004.9 should be observed.  :

5.0 FINAL CONDITIONS 5.1 All samples taken after release hs; been terminated.

5.2 All monitoring teams ordered to return to base.

5.3 All samples given to radiological controls for analysis.

7.0 s

1004.31 Revision 5 s AIRBORNE RADI0 ACTIVITY SAMPLING AND IODINE - 131 ANALYSIS DATA SHEET ATTACHMENT I Sample Collection

~

Iodine Sample Counting

1) Time on . Time off 1) Serial No. of SAM-II

' tun Time min.

1

2) Sample Flow CFM, LPM 2) Counter Factor Za ZD

3) Volume = min x CFM 3) Background counts d (1) T23T

4) Background count _

in x 2.832 x E 4 cc/ft3= cc , y 3 5) Background a Volume = min x LP x 1000 cc/l = D 3

Location:  ; min = cpm 4)

~W )

5) Date: 6) Sa ntY

6) Time: ld 4ount Time min.

7) Sampler Typ ) mple Count Rate =

Serial No b\ " _ 4 min = cpm pv (6) (7)

8) Collected .

9) Sample Net Count Rate (Net CPM)

- = cpm Sample (8) Bkgd(5)

10) Date and Time of Counting:

11) Counted by:

Iodine Activity = Net CPM = uCi/cc (Vol) (Counter Factor)

= CPM = uC1/cc

( cc) ( )

MDCR = 3.3 x /Bkgd. Count Rate (NOTE: This is for 95 percent Confidence Level and is valid

\ 8.0

. ATTACHMENT II 1004.31 Revision 5 Ne FM AIRBORNE IODINE SAMPLE NOMOGRAPH ,

(Groso CPM-Bkg. CPM) Note: This nomograph is to be used for Iodine 131 s

10- air samples counted with a SAM II. This nomograph

' C-assumes an ave. counter factor of 7800 for SAM II's. g31 Sm Vh AirboIneActivity (Ft ). (ml or cc) (" - -5 40 ~'

-1E3

. . -s

-2E3 "d 7 0-- .1- _3 > {~6

-7E3 -2

.4 - ' 1E4 200 .f-2E4 1.0:. -'q

~

-4E4

' ,h V 2 . 0- ~l 400, d ..

.s 700 h5 4

>{-7

-2 h4E5 1000- 20 -p7 -2

, 4 2000

> :s 4000_. 2 7000 10000 "

• E-8

-2 20000 ,

14 Instructions: Draw a line through Net CPM (A) andAirSageVolume(B)usingastraightedge ll-7 40000 - and read I Airborne Activity (C) on the line. -6

_ -s

-a 100000 4

0J \ E .\OVOG 1Ah -2

>E-9

-2 l

l -1J I

9.0 .

j 1

^ '

1004.31 "A

ATTACHMENT III C Revision 5 NET CPM AIRBORNE PARTICULATE SAMPLE NOM 0 GRAPH

• • "

• 9 "E * *

(Gross' CPM,-Bkg. CPM) used for particulate air samples (pCi/ml) i

-10 ' counted with an RM-14/HP-210 ' -1'E-6 Beta-Gamma Count Rate Meter.  :

This nomograph assumes a counting J 15 efficiency of 10%. -

20 4

8 -

~

Air Sample Volume '3 >E-7 40 3

(m1orcc) (Ft ) -2

-1. 5 70

_ .0.1 1100 I<

4 7 150 1x10 2.d 200 4

~

I> -3 >E-8

-400 .0 2.0 x105 - 2

-1.5 700 11000 ,- -

20 7

1500 1x10 -

2000 2.0.

-4

-100 4.0-3>{_g 4000 7.0.

- 1x107 - -2 I*

l _7000 I

10000 <

~

INSTRUCTIONS: Draw a line through Net .7 15000 CPM (A) and air sample volume (B) using -

a strai ht edge and read airborne ac-

.20000 tivity C) on the line.

4

>E-IO 3A R~~ C _ A~~ E \ OV OG RA3- 3 s

.40000

-50000 10.0

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• • 1004.31

. .' Attechment IV

~

Revision 5 -

, MINIMUM DFTECTABLE'RADIOIODINE ACTIVITY NOMOCRAPH Note: This nomograph is to be used for determining the minimum detectable activity of airborne iodine samples counted with the SAM II. This nomograph assumes an ave, efficiency of 0.35%

for SAM II's. 1 Min. Detectable Activity (uci/ml)

A B Background CPM '2E-8 AirSampleVoluge (m1 or ec) (ft ) -

5, ,

2 ,"

7E4 3

10- .

1E5 .

Q [

1E-8 15, 9E-9

20. . 8 8E-9

<- i l

.7E-9

( 30 g

h5 6E-9 50; .20 5E-9 602 7E5 -

.. I 80,.

1E6 -

.40 100ll ,

- .3E-9 INSTRUCTIONS Draw a line through background CPM (A) and air sample volume (B) using a straight edge and read MDA (C) where the line intersects the right hand L 2E-9 scale.

VJA \0VOGRA?-

11.0 .

1 1