ML20078G433

From kanterella
Jump to navigation Jump to search
Rev D to Procedure EP-ENV-3G Manual Projection Calculation
ML20078G433
Person / Time
Site: Kewaunee Dominion icon.png
Issue date: 06/21/1983
From: Marchi M
WISCONSIN PUBLIC SERVICE CORP.
To:
Shared Package
ML20078G335 List:
References
EP-ENV-3G, NUDOCS 8310120235
Download: ML20078G433 (8)
v • d • e


Text

-

. i

3'.

WISCONSIN PUBLIC SERVICE CORPORATION~

1 NO.

i l

Kewaunee Nuclear Power Plant l TITLE: Manual Dose Projection Calculation

( EMERGENCY PLAN IMPLEMENTING PROCEDURE l

I I i PAGE 1 of 8 l DATE: JUN 211983 I I 3 i

  1. A/ ,_efa p, APPROVED BY ___ #ps/

rk REVIEWED BY jffjt I

( ,

1.0 APPLICABILITY This procedure will be utilized by the Environnental Protection Director during any incident-thaLinvolves a significant release of radioactive materials to the environnent, for the purpose of projecting a radiological l dose impact. .

2.0 PRECAUTIONS 2.1 Ensure all data on the forms of this procedure is accurately recorded.

^

2.2 Check all calculations for accuracy. -

?9 REFERENCES 3.1 U.S. NRC Regulatory Guide 1.109, Calculation of Annual Doses to Man from Routine Release of Reactor Effluents for the Purpose of Evaluating Compliance with 10CFR50, Appendix I, Revision 1, October 1977.,

3.2 U.S. EPA, Manual of Protective Action Guides and Protective Actions for Nuclear Incidents, EPA-520/1-75-001, Septenber 1975. . Appendix.D Technical Bases for Methods the Estimate the Projected Thyroid Dose and Projected L' hole Body Gamma Dose from Exposure to Airborne Radiciodines and Radioactive Noble Gases.

4.0 INSTRUCTIONS i

4.1 Whole Body Dose Projection Estimate . .

If the source term is identified by sample results which quantifies specific nuclide content, then a conservative whole body dose estimate may be calculated using form ENV-3G.1, Estimated Whole Body Dose -

c Calculation Worksheet.

Acquire the data needed for Section I of Form ENV-3G.1 from 4.1.1 the RAF or TSC.

NOTE: Data Needed: Release rate of Noble gas in (Ci/sec),

actual or estimated release duration, and X/Q from

( EP-ENV-3E or 3F.

I 831012O235 830929 PDR ADOCK 05000305 F PDR

I

.. g WISCONSIN PUBLIC SERVICE CORPORATION I NO. EP-ENV-3G 1

Kewaunee Nuclear Power Plant i TITLE: Manual Dose Projection l Calculation

(- EMERGE?'CY PLAN IMPLEMENTING PROCEDURE I I l DATE: JUN 211983 l PAGE 2 of 8 I I 4.1.2 Calculate the Whole Body Dose Projection Estimate using Section II l of Fonn ENY-3G.1 and the following equation:

3 D(REM) = X/Q(Sec/m ) x Q(Ci/Sec) x T(hrs) x DF(REM - m3)

G1 - hrs hhere:

D = projected whole body dose estimate (RB4)

X/Q = Atmospheric dispersion coefficient determined on Form ENV-3E.2 or ENV-3F.2 (Sec/m3)

Q = Nuclide equivalent release rate (Ci/Sec) from EP-RET 5 (Flow rate (cc/sec) x conc. (uCi/cc) x 10E-06)

DF = Whole body dose conversion factor (REM - m3)

(Ci - hrs)

I NOTE: The whole body dose conversion factor is calculated from NRC Regulatory Guide 1.109, Rev 1,

. [A dated October 1977.

4.1.3 Field Sample Analysis Method (Marinelli Beaker of a Field L Drawn RAP Sample). -

Complete Sections I & II of Form ENV-3G.2 and the following equation:

D(REM) = FC x DF x T .

, dere:

D ='Is Dose in REM DF = Whole body dose conversion factor (REM - M3) ' '

(Ci - hrs)

T = Release duration in hours FC = Field Concentration of specific nuclide in uC/cc as per i

Gamma Scan result -

NOTE: A separate Calculation Form is required for each point

}

of interest. ,

f -

l l

l

l ~

~

. . . I WISCONSIN PUBLIC SERVICE CORPORATION l !!0. EP-ENV-3G I i Kevaunee Nuclear Powe'r Plant l TITLE: t!anual Dose Projection  !

. l_ _ _ ' Calculation

[' I I EMERGENCY PLAN IMPLEMENTING PROCEDURE i DATE: 1 PAGE 3 of 8 l

JUN 211983 g _

4.2 Thyroid Dose Projection Estimate If an Iodine Source Tem is identified, calculate the projected or estimated dose for each point of interest by using a separate ~.

Form ENY-3G.2 and one of the following methods.

4.2.1 Inplant Sample Method Complete Section I of Form ENV-3G.2 for each point of interest if the release rate of Iodine-131.(Ci/sec) is available for a tlyroid dose projection estimate.

4.2.2 Field Sample Analysis Method Complete Section II of Form ENY-3G.3 for each point of interest if the actual measured Iodine-131 airborne concentration (uC/cc)

This method is available for a thyroid dose projection estimate is also to be used as a backup for the Inplant Sample Method.

[ NOTE: This method assumes only Iodine-131 exposure, so it will only be an approximation of the total Iodine dose.

4.3 Record all results of Dose Projections by the method used on Form ENV-3A and the field map. Also, report this data to the Radiological Protection Director, Emergency Response Manager, and Technical Support Center Communicator. .

4.'4 Proceed to procedure EP-ENV-3H, Protective Action Recommendation Deter-mination, to determine the appropriate Protective Action Recommendations.

i l *.

l 1

[

s EP-ENV-3 P' i JUN 21 y(#l

% Page 4 ol d FORM ENV-3G.1 ESTIMATED WHOLE BODY DOSE CALCULATION WORKSHEET

FOR SPECIFIC NOBLT GAS RELEASE LOCATION: Sector / Point # DATE TIME l I. Enter data available below:

! A. (Record in Column 1 of section II belov) Noble Gas Nuclides release rates 1

(Data is available from the RPD or TSCD) -

B. X/Q as detemined and recorded on Fom ENV-3E.2 or 3F.2 (Sec/m3)

C. (Data available from RPD or TSCD) . Release Duration (hrs) i I

i II. Calculate dose for each nuclide and sum all doses to get total exposure dose by using the fomula below:

Release Rate (REM-m3}

x X/Q(Sec/m ) x Release Duration (hrs) x Dose Factor (Ci-br) 3 = Dose (REM)

Nuclide (Ci/Sec)

I l

Kr-85 1 x x' x 1.84 =

I

Kr-85m i x x x 1.34 x 102 =

! l Kr-87 x x x 6.76 x 102 ,

ll 1 I

l Kr-88 1 x x x 1.68 x 103 .

i l l Xe-133 1 x x x' 3.36 x 101 =

I I i Xe-133m i x x x 2.87 x 101 =

l Xe-135 1 x x x 2.06 x 102 .

I Xe-135m I x x x 3.56 x 102 ,

Signature of Completing TOTAL WHOLE BODY i =

Authority and Title (s1gnature) EXPOSURE DOSE Llide) -

1

l \

CQ '

ENV-k '

YtI 21 1983 -

Page 5 of 8 FORM ENV-3G.2 FIELD SAMPLE ANALYSIS METHOD OF WHOLE BODY DOSE CALCULATION DATE TIME LOCATION: Sector / Point #

Sectiori I (Enter data available below) r A. Record the Field Conctnrrations of Gamma Scan Identified Noble Gases .

+

in Section II, Column 1. (Data is available from RP0/RAF or TSCD)

B. Release Duration (actual or estimated)

Section II - Calculate doses for each nuclide and sum all doses to get total exposure dose by using the formula below.

Nuclide Fiel d Dose (REM-m3) ~

Release Concentration Factor (C1-hr) Duration (hrs) Dose (REN)

(uG/cc) 1 =

Kr-85 1 x 1.84 x 1 =

Kr-85m I x 1.34 x 102 x 1 =

1 Kr-87 1 x 6.76 x 102 x 1 =

Kr-88 1 x 1.68 x 103 x 1 =

Xe-133 l x 3.36 x 101 ,x 1

Xe-133m l x 2.87 x 101 x' .-

=

l .

Xe-135 l x 2.06 x 102 x I =

! Xe-135m I x 3.56 x 102 x TOTAL WHOLE Signature of Completing =

! Authority and Title .

(signature) BODY DOSE r

L i 1 T,l e l

~ EP-ENV-3G qun 2 1 B33 Vdge 6 of 8 h FORM ENY-3G.3 ESTIMATED THYROID DOSE PROJECTION CALCULATION Sector / Point # DATE TIME LOCATION: _

I. INPLANT SAMPLE METHOD

~

A. Iodine-131 Release Rates (Ci/sec) l B. X/Q at the point of interest from Form ENV-3E.2 or 3F,2 .(Sec/m3)

(hrs)

C. Release Duration (Data available from RPD or TSCD) _

D. Calculated Iodine-131 Concentration at the point of interest.

Rele se Rate (Ci/Sec) x X/Q(Sec/m3 ) = uC/cc of I-131 X = uC/cc of I-131 E. Detennine Estimated Total Thyroid Dose from Figure EHV-3G. Use the Calculated Iodine-131 Concentration on the X-axis and go vertically up the graph to intersect the appropriate Release Duration line, then read off the Y-axis the Estimated Total Thyroid Dose. ,

L

! - Calculated I-131 Concentration vs. Release Duration => Total Thyroid Dose fx uC/cc vs. hrs => REM F. Multiply Thyroid Dose (in REM) by 2 and make recommendation based on corrected l

thyroid dose, t

Thyroid Dose (from step "E") x 2 = Corrected Thyroid Dose in REM.

REM x 2 = REM ,

^

NOTE: EPA Guidelines state that protective action recommendations based on thyroid dose should use the dose calculated for children in the affected population.

~

s.

l t'.

i-1 a

, , EP-ENV-3G I*

~~

~ g i 1 1983 Page 7 of 8 ,

!( FORM ENV-3G.3 ESTIMATED THYROID DOSE PROJECTION CALCULATION II. FIELD SAMPLE ANALYSIS METHOD uC/cc A. Field Sample Analysis I-131 Concentration at the point of interest (hrs)

B. Release Duration (Data available from the RPD or TSCD)

Use the field -

C. Determine Estimated Tctal Thyrcid Dose from Figure ENV-3G. .

sample analysis I-131 concentration on the X-axis and off the Y-axis the Estimated Total Thyroid Dose.

Field Sample: Analysis _

Iodine-131 Concentration vs. Release Duration r> Total Thyroid Dose REN uC/cc vs. hrs =>

D. Multiply Thyroid Dose (in REM) by 2 and nake recommendation based on co,.

thyroid dose.

Thyroid Dose (from step "E") x 2 = Corrected Thyroid Dose ii REM.

j- REM 2 =

REM x NOTE:

EPA Guidelines state that protective action recommendations based on thyroid dose should use the dose calculated for children in the affected populaticn.  ;

COMPLETED BY tT1 tie) s .

s

/

  • ~ - - - - . _ _ _ _ ___

A s'- *

^ EP-ENV-3 G ym Z113.

Page;8 )f E

. ..iim i . . .....- - . . . ..... . - rra .

(Go, coo$' Basts ; 5

oose = t.48 Rem /jdt. inma (nb-i4e4s rem "

~

Ass.uned FaRemws bs:

l x 10b cc/ut roe. IA HR. B EXIMdEES 1.DDD .. 2xio7 cchio. N. enewas bM FA ,

?>O Days

- Q lD - _

'l W.Ys i00.0 ,

r -

w .

cx:

m W

w v> ID.0 ,

1.$ \\f,- /

/ [

/

7a I

/  :

t Cf 3

Jo r

/ -

.L _J - - -

o -

\ j -

cc m >.

cx: y 1.0

/ 8 HR / _

Rs -

o

-J

~

u. < .

p .

o ~

I--

6, j  ! 2.HE -

2 L -

i i 11 2 EXPO 5URE T)P4E f -

^

e ..

- 0.01,- .

~

I THYR 0lb DOW DOS TO INHALATICA): .

or r-si  : .

O -

Cw.J.coi , , ,,.... . , , . . . . .

go-T go-a.

10 " m-9

..... A tR t D e n T - n t enL'c c1.' rRAnna Vktor%*)

(1) Values are calculated using the old dose conversion for, I-1316 The new constant in the reference is 1.5 x 10 . However, the old conversion, 1.8 x 10 , is used for conservatios (2) To argyroximate the child (6 months to one year worst case) thyroid dose from the

Retrieved from "https://kanterella.com/w/index.php?title=ML20078G433&oldid=2762184"