ML20066G795

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Rev 14 to Odcm
ML20066G795
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 12/31/1990
From: Blue L, Gabe Taylor
SOUTH CAROLINA ELECTRIC & GAS CO.
To:
Shared Package
ML20066G766 List:
References
PROC-901231, NUDOCS 9102200048
Download: ML20066G795 (12)
v • d • e


Text

_ - _ _. . ._- _ . . -

p Control Copy No. _,_

OFFSITE DOSE CALCULATION MANUAL FOR SOUTH CAROLINA ELECTRIC AND GAS COMPANY VIRGIL C.. SUMMER NUCLEAR STATION

.}

PSRC Approval !A ./ l2 - (4- 10

.(

QV Date ,

I Revision 14 December 1990 0 ,

' Date . .

1 Approved by: ~

o / /) -/J-p D

~

Date.

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R DO DR _

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.ODCM, V.C. Summer /SCE&G: Revision 14(December 1990) ,

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LIST OF EFFECTIVE PAGES (continued)

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.. 7. j UST OF EFFECTIVE PAGES (continued)

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ODCM,V.C. Summer /SCE&G: Revision 14(December,1990) iii

. .- ,- - - . .- - . . ~ - . . . . . ..

i Section of Term- Definit lon initial Use t

a D' =

l-

the release rate of non noble ~ gas radionuclide in -(3.2.2.2) i-  : as determined from the concentrations measured 4 a in the analysis of the appropriate sample required J by Table 1,2-3 (pCi/sec). 4

~ .

7 Or = cumulative release of noble gas radionuclide i "

(3.2.3.1)- j over the period of interest (pci). ,

~

. Q = cumulative release of non noble '(3.2.3.2)

- (required by ODCM 5pecification' 1.2.4.1) over gas the radionuclide i period of interest (pCi).

l R'c

.= .' dose factor for radionuclide i and pathway j, (3.2.3.2)' Ji

- (mrem /yr per uCi/m3 ) or (m 2-mrem /yr per pCi/sec) i from Tables 3.2 2 through 3.2 6. '

-W r -=.

relative dispersion parameter for the maximurn .(3.2.3.2) c

' expaz,ed individual, as a apropriate for his exposure '

pathwsy j and radionuc ide i.

= ' RTQ' for inhalation and all tritium pathwaysi

= 57D' for other pathways and non-tritium radionuclides RTQ = 1 the highest annual avei ge relative concentration .(3.2.2.1)1 L!

, in any sector, at the site boundary in sec/m3/ l L 1 3.17.x 1Va = the fraction of ons year per one second "

(32.3.1)

X/Q'= . ~ Annual average relative concentration for the (3.2.3.2)- ,

location of the maximum exposed individual for '

l the site (sec/m3).  !

57C' = Annual average relative depositio'n for the location -  :(3.2.3.2) of the maximum exposed individual for the site (m 2).

l-I L l ODCM, V. C. Summer, SCE&Gi Revision 14 (December 1990)- .

l '3.0-13 I

c. ,

p.. ,v ,

gy f";

y_.

. = , . . -j i

s .s. d

', ls '

,' .r,i -

' ' !! (!1 .

r

.j 2 u ;- E t?

, .;.,.,  :) .

[ _-_ F Y, A'

=s 4

4,' ,

itU

Dg)  !='
  • sair dose' duel ot beta _ emissions lfrom noble gas radio-1: ,

nuclide i(mrad); >

?

'!5 e .=L .3.17 x 10 8 E N, R7Q Q z

f(50)[ Na 4- ,;

o y .g .

where,1 Nia ~= air. dose fabtor due to beta emissionifronrnoblef -

i.,

a. ,

. gas radiondclide i (mrad /yr per'uCi/m3) frbm Table!. j

++ '

+- '

3.1 1.' , .y a 3L212 < , ' ' DoseIto an individual.from radiolodines andiraElohtive1 l materials in particulate form;land radionuclides (other;than noblet Y gases);\with half lives greatsr than eight (8) days (Calendkqusrterp  :

157;5 mrem any organ, Calendar year: 4 {5'mterri any organ) Will lie j cakUlated for the purpose of implementatio'n of sectionlE2.4.1 as: ' ,

s

. follows: ' '

g a,

W s q

' D, = Ldose.to an individual from'radiciodines andf[radioi j nuclides inl particulate. form,Lwith halffilves : greater.1 I

..than eight days (mrem) ,

' I

=-

e 3.17 x 10 8 Rg W y' Q,'.' (51): q l

~

l -W,,' = relative concentration or; relative deposition for 1 the maximurn expose'd individisal,Las appropriate h

.-for exposure pathway j and radionuclide 1. l RTC' for inhalation and all tritium pathways We 2.2 x 10 6 sec/m3 ,

j. - r Ob~TQ' for other pathways ~and non tritium radionuclides!
= ' 1.2 x 10.s m- 4 i-

'(See the notes to Table'3.2-7 and:3.2 8 forithe. origin of' thesefactors.) .

4

' ODCM,V C. Summer, SCE&G: Revision 14(December 1990): .

.h .)

3.0 16 i t

'2 1

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( i S

Table 3.2 7:

CONTROLLING RECEPTORS, LOCATIONS, AND PATHWAYS *-  !

l E

DISTANCE- AGE. ORIGIN SECTOR - (METERS) PATHWAY GROUP (FOR INFORMATION ONLY)

N** 6,100 Vegetation ' Chi _ld . Vegetable. Garden 0

NNE *

  • 5,300 Vegetation Child -Vegetable Garden -

I NE 4,500 Vegetation Chi _id - .-Vegetable Garden  !

4,500 Grass / Cow / Meat - Child. Grazing Beef Cattle ] ,

3

, ENE 2,600 . Vegetation Child -Vegetable Garden .'

2,600 Grass / Cow / Meat : Child Grazing Beef Cattle

{

E 1,800 Vegetation Child. -Vegetable Garden }

ESE 1,800 Vegetation- Child -Vegetable Garden SE 2,400 Vegetation Child Vegetable Garden SSE 4,300 Vegetation Child Vegetable . Garden S** 6,300 Vegetation Child -Vegetable Garden S SW *

  • 5,500 Vegetation Child -Vegetable Garden SW*
  • 5,300 Vegetation Child -Vegetable Garden' l WSW 3,100 Grass / Cow / Meat - Child -Grazing Beef Cattle l-W 4,300 Vegetation . Child -Vegetable Garden 3,500 Grass / Cow / Meat Child Grazing Beef Cattle '

WNW*

  • 7,700 Vegetation Child Vegetable Garden NW*
  • 6,600 Vegetation Chil'd . -Vegetable Garden .

NNW 4,800 Vegetation Child -Vegetable Garden 4,800 Grass / Cow / Meat - Child Grazing Beef Cattle See note on the following page for the method used to identify these control-ling receptors.

    • If a cow were located at 5.0 miles (8,000 meters) in this sector, an infant consuming only its milk would receive a greater total radiation dose than would the real receptor listed. However, such an infant would not be-the Maximum Exposed Individual for the site.

1 ODCM, V. C. Summer, SCE&G: Revision 14 (December 1990)

--3.0 37

- -. . -.n

a l

- NOTE: - The controlling receptor in each sector?was identified in the 1 following way. Receptor locations and associated pathways were--

obtained from the August 1990 field survey. A child was assumed -

at each location, except that where ~a milk cow was listed, an infant -

~

was assumed. X/O' for each candidate: receptor was obtained by; interpolation of values in Table 6.1-10 of Reference 5; D/Q' for each-candidate receptor was obtained by interpolation of values in Table 6.113 of Reference 5. Expected.. annual releases of each nuclide were taken from Table 5.2 2 of Reference 5. The pathway .

~

dose factors given above in Tables 3.2 3 and 3.2-4 were then used

~

with the referenced values in the methodology of Section 5.3 of-Reference 1 to compute total-annualldoses at each candidate -

receptor site for! 9i ^ ' Sways existing at that site. The~ controlling -

receptor for each + sas then choseri as the candidate receptor with the highest totai annual dose of any' candidate receptor in the given sector. Alllisted pathways are in addition to inhalation and ground plane exposure.

i i

l l i i

ODCM, V. C. Summer, SCE&G: Revision 14 (December 1990)

'3.0 38

1 x _

is -

Table 3.2 8 : .

a ATMOSPHERIC DISPERSION PARAMETERS '

FOR CONTROLLING RECEPTOR LOCATIONS *

[s

.. . 0 DISTANCE 4 SECTOR SUD' 57D' '{ MILES / MET 2RS)!

N 1.5 E-07 ~7.0 E 10 3.8/6,100-NNE 2.5 E-07 L 1.1 E-09 ' ' t 3.3 / 5,300. .

NE. 3J E-07L '1;8 E-09 :2.8/4,500;  :[

ENE: 1.1 E-06 5.8 E-09 ' L1.6 / 2,600 '

E 2.2 E-06 1.2 E-O'8 : L1:1/1,800.-

ESE 2.2 E 06 8.4 E-09

' 1.1/1,800;

-SE - 1.6 E 06 - 5.8 E-09 : :1.5/2,400' t SSE ~3.0 E-07 1.0 E 09 - ,

'2.7/4,300. .

S 1.7 E-07 13.7 E-10' , 3.9/6,300; }

SSW 2.0 E 07' '6.4 E-10: 3.4/5,500 SW 2.6 E-07 1.0 E 3.3/5,300 WSW 6.4 E-07 3.2 E-09 _1.9/3,100 l W 2.2 E 07 - 9.2 E 10 - '2.7/4,300 W 3.2 E-07 = 1.5 E-09 L2.2 / 3,500 WNW 5'9 E 08.

. 2.2 E-10 , J 4.8 / 7,700 )

h NW 9.6 E 08 4.1 E 10 :411L/ 6,600 NNW  ; 1.8 E 07 - 9.8 E 10 3.0/4,800 Annual average relative dispersion and? deposition values for the receptor j locations in Table 3.2 7.~ Values were obtained by interpolation in Tables 6.1-10.

and:6.1-13 of Reference 5. Those tables are based on one ~ yea'r-(1975) of p meteorological' readings and the' FSAR dispersion model (ground level release,'

L . sector-averaged model, with open terrain recirculation factors, dry depletion by .

Figure 3.3-1_, and using decay.with a half life of 8.0 days). #As a' result of the-analysis described in the note to Table 3.2-7, the location of the maximum exposed individual for the site was identified as being the vegetable garden at 1.1 miles in the E sector. Therefore, the site 50D' ancib"Q' (Section 3.2.3.2 and following) are those from this table for that location.

4 b ODCM, V. C. Summer, SCE&G: ~ Revision' 14 (December 1990) 3.0 39 l

a. . -- _ ._ . , - ,- - , . . . . . , . - - . . - , . . . . - ~ ~ , , - , . , , . . . . - . . . ~

._ _ _ _._ . . . .._,m. . .

y

[, -H-

/ g ,

y zi3 _ *- '

9 t' ? i -

O 7, - .

m <<

m y n

w Table 3.219 (Continued) i1 4 ,. =Page 4 of 4. .

d l ,

y j

L NOTES}  ; ,

~

L Site-specific annual average absolute humidityE Far each' month [an average.

1.:

~

zabsolu'te humidity,was calculated from(thel 7l years ~ ofimonthji average;

, temperatures in Table 2.3-49 ~of Reference 4' and 'th'e 5 years- ofsmonthly '

T everage dew points in. Table 2.3'-64 of RSference 4; The'.12 monklyl values '

f3 '

- were averaged to obtain the annual average of 8.84'gm/m .L(Secklo'n.5.2.1.3 3

! [i ~

h .of Reference l1 gives a default value.of 8 gm/m .)

o, i

},

l; e,'_ _ .

la . ~

2. Inhalation and ingestion dose factors were tak'en from the' indicated source. -

~

jFor each age group, for each nuclide, the organ doselfactor used was_ the  ;

L ~ highest dose factor for that nuclide and_ age gr6up m the referenced table. .

A fl ,,

N

- 3.  ; Typicelly beef cattle are raised all year lon pasture. A'nnual land l surveys have

~ ~

indicated that the small n. umber of goats raised within 5' miles typically.are) l

~

used for' grass control and not food or milkl Neverthelesslthe goats'wereL

~

treated as full meat and ' milk sources [where present, despite theifact that; their numbers cannot sustain the} meat consumption-rates of; Table' E-5 of -- j

- Reference 3.

a '

i na 9

1

4. - According to the August 1990 land use1 census, dairy cattle possibly graze at! j L '4.9 miles in the West sector.j lf dairy cattle graze at this lo' cation, the dose ~to. >

an infant consuming milk;from these animals ~would be less tharethe dose received by the critical receptor identified for the sector.' .No"oiher milking = .

activity within five miles-of the-plant.was'ideniified. ?Theseivalu's .

e are.

included for reference only.

.5. Two columns of Rl.s were calculated - cne for cows kept exclusively on local:

pasture (f, = f, = 1), and one for cows ke'pt exclusively on. locally grown stored L -feed (f, = f, = 0).' See the note on page 2.0 37.

]

4 p ODCM, V. C. Summer, SCE&G: Revision 14 (December 1990) 3.0 43 a

?~.. . .. m . . . L,. ,~1 h. .. . , , m_ .,- _,,_. m 4--.,,m. . . * . , - , , ,

~, - .

, q

. . ~g ~. _

bi$ F

. 1

?)

/

..= - 2.1 E-3 mrem /yr to skin.

~ D, = g[;T7Q Pk 4 i

.= (5.3E-6)(1.624E + 7)(6.73E 8)(481):

= 2.8E 3 mrem /yr_ (Organ Dose Rate)) ,

  • i b) Unrestricted Area Dose to Individual (Section' 3;2.3)i u il D;:= 3.17E-8(( M[flQ k .,

d i

- = 3.17Ei8 [-[(1.2E3)(5.3EL6)(1.lE-6)(1.04E6) + (1.5E4)(5.3E-6)(3.5E-7) ' ]

.;)

i

- (1.04E6) + (1.6E2)(5.3E-6)(3.9E-6)(1.04EG)'+ (353)(5.3E-6)(8.5E-4)(1.04E6)

+ (327)t5.3E-6)(1.2E-5)(1.04E6) + (1.9E3)(5.3E -6)(5.I'E-5)(1.04E6))

= 5.6E-8 mrad'y air dose, i 1

D, = 3.17E-8 [ N pITQ 7,- - -

)

i.

e

. = 3.17E-8 [ [(2.0E3)(5.3E-6)(l;lE.-6)(1_-04E6) + (2.9E3)(5.3E-6)(3.5B-7)^

j i I (1.04E6) + (1.1E3)(5.3E-6)(3.9E-6)(1.'04E6) + (1.1E3)(5.'3E-6)(8.5E-4)(1.04EG)

+ (1.5E3)(5.3E- 6)(1.2E-5)(1.04E6) + (2.5E3' )(5.3E-6)(5.1E-5)(1.04E6)]

= 1.82E 7 mrad air dose.

' D, ,= 3.17E-81 R y -W '.

i

= 3.17E-81, [(1.624E7)(2.2E-6)(6.73E-8)(1.04E6) + (2.089E7)(1.2E-8) u ODCM, V. C. Summer, SCE&G: Revision 14 (December 1990)

Appendix A 13 '

H

'g'

~

.v t (6.73B- 8)(1,04E6) + (4.754El0)(1.2E-8)(6.73E-8)(1.04E6)]

[

= '1.35E-6 mrem individual dose due to radiciodines and radionuclides ' ,

in particulate form with 13 > 8 days.

L D. RM A10 Given: I X/Q =L 5.3E-6 5edm3 '

. Kr 89 = 1E 5 uCi/ml

, 1) . b :onitor Setpoint Calculation -

l Permissible release conditions for the Waste. Gas System are defined in terms; of both radionuclide concentration and waste' gas flow rate (using~ previous - }

nuclide~ concentrations). '

a)-

The maximum permissible flow rate is' set on the same basis butl include the engineerin'g safety factor of '0.5. The.RM-A10 setpoint level 5,is defined as:

-So_

,< 1.5c l

b) The maximum permissibl'e waste ' gas flowirate f, (cc/sec) is calculated from the maximum permissible dose rates at the site boundary according to:

! i l .

f,5 thelesser of f,orf; ,

I f, = the maximum permissible discharge rate based on total body j dose rate.

1 l-0.25 X $00 mremlyr .

77Q X 1.5) [-(Xg )( K,) -

i

= (0.25)(500)/ 5.3E 6)(1.5((1E-5)(1.66E4)) [

= 9.47E7 cc/sec i

(j ODCM, V. C. Summer, SCE&G: Revision 14 (December 1990)

Appendix A214

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