ML20133G943

Rev 1 to FNP-0-M-011, Offsite Dose Calculation Manual

ML20133G943
Person / Time
Site:	Farley
Issue date:	05/21/1985
From:	ALABAMA POWER CO.
To:
Shared Package
ML20133G947	List: ML20133G943 ML20135C727 ML20135C732 ML20135C745
References
FNP--M-11, FNP-0-M-011, NUDOCS 8510160195
Download: ML20133G943 (15)

Text

-

l

', FNP-0-M-011 May 21, 1985 4

Revision 1 '

ALABAMA POWER COMPANY JOSEPH M. FARLEY NUCLEAR PLANT UNITS 1 AND 2 S ,

A F

• E T

Y .

OFFSITE DOSE CALCULATION MANUAL R E

L A

T E

D Approved:

l b W/

TechnicalSuperptendent i Date Issued: 2/ Pf List of Effective Page Page Rev.

i,ii 0 1-38 0 39-52 1 8510160195 850715 i

PDR ADOCK 05000348 R PDR

• l l

CHP/ODCM 1

I i

1

. FNP-0-M-011 l

4.12.1 Radiological Environmental Monitoring Locations Table 3.12-1 and Figures 3.12-1, 3.12-2, 3.12-3, and 3.12-4 provid.

the Radiological Environmental Monitoring point locations.

4 1

I i

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39 Rev. 1

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TABLE 3.12-1 .

RADIOLOGICAL ENVIRONMENTAL MONITORING LOCATIONS -

EXPOSURE PATHWAY AND/0R SAMPLE SAMPLE LOCATIONS SAMPLE IDENTIFICATION

1. AIRBORNE

a. Particulate Indicator Stations:

River Intake Structure (ESE-0.8) PI - 0501 South Perimeter (SSE-1.0) PI - 0701 Plant Entrance (WSW-0.9) PI - 1101 North Perimeter (N-0.8) PI - 1601 l Control Stations:

Blakely, Ga. (NE-15)

Dothan, Ala. (W-18) PB - 0215 I

Neals Landing, Fl. (SSE-18) PB - 1218 PB - 0718 )

Community Stations:

Great Southern Paper Co. (SSE-3)

Ashford, AL. (WSW-8) PC - 0703 Columbia, AL. (N-5) PC - 1108 PC - 1605

b. Radioiodine

$ Indicator Stations:

River Intake Structure (ESE-0.8) II - 0501 South Perimeter (SSE-1.0) II - 0701 Plant Entrance (WSW-0.9) II - 1101 North Perimeter (N-0.8) II - 1601 1 Control Stations:

Blakely, Ga. (NE-15) '

Dothan, Ala. (W-18) -

IB - 0215 I

Neals Landing, Fl. (SSE-18) IB - 1218 i IB - 0718 l Community Stations:

2 Great Southern Paper Co. (SSE-3)

IC - 0703 l I

2 Not required by Tech Specs. 'Used as a spare station.

Not required by Tech Specs. Used for comparison purposes with state of Ga. EPD.

_. _ -. _ _ . . __ - . . .=-

, . I j i' TABLE 3.12-1 (con't)

EXPOSURE PATHWAY AND/OR SAMPLE SAMPLE LOCATIONS SAMPLE IDENTIFICATION

2. Direct Radiation i Indicator Stations:

j Plant Perimeter

! (NNE-0.9)

I (NE-1.0)

RI - 0101 (ENE-0.9)

RI - 0201 l RI - 0301 I (E-0.8) RI - 0401 (ESE-0.8) 1 (SE-1.1) RI - 0501 ,,

(SSE-1.0)

RI - 0601 (S-1.0) RI - 0701 RI - 0801 (SSW-1.0) ,

(SW-0.9)

RI - 0901 RI - 1001 (WSW-0.9)

(W-0.8)

RI - 1101 (WNW-0.8)

RI - 1201 (NW-1.1)

RI - 1301 (NNW-0.9)

RI - 1401 (N-0.8) RI - 1501  ;

RI - 1601 i g Control Stations:  !

Blakely, Ga. (NE-15)

Neals Landing, Fla. RB - 0215 RB - 0718 (SSE-18)

Dothan, Ala. (W-15)

Dothan, Ala. (W-18) RB - 1215 l

L RB - 1218 Community Stations:

(NNE-4) )

RC - 0104

]

~

7 (NE-4)

RC - 0204 s (ENE-4)

(E-5) RC - 0304 i t RC - 0405 Y  !

(ESE-5)

(SE-5) RC - 0505 S

• • l RC - 0605 If (SSE-3) ,

RC - 0703  :

f k

4 f

1 l

1 I

TABLE 1.12-1 (con't) '

t ,

EXPOSURE PATHWAY AND/OR SAMPLE i

SAMPLE LOCATIONS SAMPLE IDENTIFICATION '

i 2. Direct Radiation (Con't)

Community Stations (Cont):

(S-5)

RC - 0805 .,

(SSW-4) l (SW-1.2)

RC - 0904 RC - 1001 l' (SW-5) l (WSW-4)

'RC - 1005 l (WSW-8)

RC - 1104 i RC - 1108 (W-4)

. (WNW-4)

RC - 1204 .,

(NW-4)

RC - 1304 ,,

RC - 1404 (NNW-4) l (N-5) RC - 1504 .

RC - 1605 l

3. WATERBORNE t ,

a. Surface e Indicator Station:

Great Southern Paper WRI s~

Intake Structure (River Mile-40) gw Control Station:

Andrews Lock & Das Upper Pier (River Mile-47)  !!

WRB l

b. Ground Indicator Station:

Great Southern Paper Co. Well (SSE-4) WGI - 07 lE f Control Station:

• I Mr. Whatley (SW-1.2) ,

WCB - 10 * '

c. Sediment Indicator Station: l Smith's Bend  ?  !'

) Y '

(River Mile-41) RSI l

F $

." Control Station:

- Andrews Lock & Dam Reservoir (River Mile-47) RSB t

4

TABLE 3.12-1 (con' t)

EXPOSIRE PATHWAY AND/OR SAMPLE SAMPLE LOCATIONS SAMPLE IDENTIFICATION

4. INGESTION .

A. Milk Indicator Station:

None Control Station:

Brooks-Silcox Dairy, Ashford, Ala. (WSW-10)

MB - 1110

b. Fish Indicator Station:

Smith Bend (River Mile-41)

Game Fish Botton Feeding Fish FGI FBI

~

Control Station:

Andrews Lock & Dam .

$ Reservoir (River Mile-47)

Game Fish FGB Botton Feeding Fish FBB

c. Forage Indicator Stations:

South Perimeter (SSE-1.0) FI - 0701 North Perimeter (N-0.8) FI - 1601 Control Station:

'+ Dethan, Alabama (W-18)

FB - 1218

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INDICATOR STATIONS CONTROL STATIONS .

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'@ GROUND WATER FIGURE 3.12-3: ' INDICATOR AND CONTROL SAMPLING LO, CATIONS FOR WATERBORNE ENVIRONMENTAL RADIOACTIVITY IN THE FARLEY NUCLEAR PLANT AREA.

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- Locations FOR A:Reonut naoicacTtytTY

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FNP-0-M-011

. 3.3.3.10 Determination of Alarm / Trip Setpoints for

Liquid Monitors R-18 Trip setpoint will be calculated based on manufacturers single isotope activity response

• curves for the detector being used according to the following expression; M7=K (FyF ,F D )

y ,

where:

K = monitor meter response (cpm) corresponding to the source activity (pCi/ml) calculated as measured monitor meter response taken from the calibration curve given by the manufacturer.

F = liquid radwaste tank resease flow -

r$te (gpm)

FD = dilution water flow rate (gpm)

R-23A and R-23B Trip setpoints will be determined from;

1. During initial startup the trip setpoint will be taken from the manufacturers

' single isotope activity response curves for the detector being used. Setpoints will be less than or equal to the count rate (cpm) corresponding to 1 X 10~5 pCi/ml in the effluent stream.

2.

After sufficient data is accumulated to permit a calibration against actual representative effluent these monitor trip setpoints may be calculated from the following expression; MT = h(x) + K (cpm) where: -

K = The zero intercept on the manufacturers curve obtained by taking the difference between the (cpm) actual response of the detector to the measured pCi/ml.

t 48 Gen. Rev. 1

FNP-0-M-011 i

1

{

h(x) = the function which  ;

generates the manufacturers  !

curve such that N = (cpm) count rate corresponding to 1 X 10~5 pCi/ml as measured in the effluent stream.

The blowdown discharges into the service water dilution stream which has a minimum flow of 10,000 gpm. The t maximum blowdown flow rate per generator is 50 gpm which yields 150 9pm total. The effective dilution ratio is 66.67 which when applied to the maximum activity allowed by the setpoint (1 x 10~5 pCi/ml),

approximatelygives2an activity x 10 7 pC1/ml which is well below all mpe values set by 10 CFR 20. The blowdown is automatically routed back to the condenser l

, if there is no dilution flow.

1 i

t 49

, Cen. Rev. 1

.~

' FNP-0-M-011

\\

i 3.3.3.11 Determination of Alarm / Trip Setpoints for

( Gaseous Monitors R-15 and R-22 alarm setpoints and R-14 trip setpoint will be calculated based on the most restrictive of the following release-dose rates:

14 i

a) I KQi fy< 500 mrem /yr Fy 1=1 (X7Q),lo s pci/pCi._* F where, i = subscript numbering noble gases in consideration K. = the total body dose factor due to 9hmme emissions for identified noble gas ._

Isotope i (mrem /yr per pCi/m3 ) from Table 3.

Q. =

average release rate of isotope i fh8m release point v (pCi/sec) v = subscript indicating release point g

in consideration (turbine building vent or plant stack)

F p8 =intrelease fraction allotted to release I in consideration (X/Q) = highest value of annual average atmos [hericdispersionfactoratsite boundary for all sectors (sec/m3 )

I i

(X/Q), = 7.5x10~7 sec/m3 s

(X/Q)T 1.2x10~5 sec/m3 F = safety factor to account for possible sampling and monitoring error and allow advance warning of approaching limit = 2 14 b) I 3000 mrem /hr Fy i=1 (Lf+1.1 Mf ) Qfy<

(X/Q)y 108 pci/pci*F 1

l Li = skin dose factor due to beta emmissions

(

s for identified noble3 gas isotope 1 i (mrem /yr per pei/m ) from Table 3 l

50 Rev. 1

.- FNP-0-M-011 M. = air dose factor due to gamma emissions fdr identified noble gas isotope i (mrad /yr per pei/m3) from Table 3 The actual monitor setpoints will be adjusted for a lower (thus more conservative) count rate based on the worst isotope release-dose rate as follows and need not be changed, ex(cept based on reaportioning of allotted release fraction from operating experience as mentioned above. From Table 3, Kr-89 would be the most restrictive

' isotope in either the total body or skin dose restrictions. Assuming that the total release consists of Kr-89, the skin dose equation is more restrictive than the whole body dose equation, and the release-dose rate limit would be calculated as: -

Fy Q, = 3000 mrem /yr (X/Q)y 10' pci/pCl* F* (Ly+1.lMy ), and Q,y = 6.9x104 pCi/sec (F,)

QTW = 4.3x108 pCi/sec (FT )

Based on maximum flow rate and conservative detector efficiency, the monitor setpoints S

y (cpm) may be calculated as follows:

Sw + b, where

! S" =

(c)(f,)

b = monitor background count rate (cpm c = gross monitor calibration factor (pCi/ml per net cpm)

= u+ m, where i

i u = isotope cdncentration (pCi/ml) in the monitor at time of grab sample calibration (Noble gas release rate calculations) fy

=maximumeff{uentflowrate(ml/sec) t m = net monitor reading (cpm) at time of grab sample calibration (release rate calculations) f 51 Rev. 1

. , _ _ _ _ , . - - - - - - , n.- - - -- -- . - - - g, , , ., , , . . . , . - , . , , . . , , - - , - . ,---r-- - - - - - , , . + - - , - - - -

FNP-0-M-011 Setpoint calculations will be made for

(.

R-14, R-15, and R-22 in similar form.

(pCi/sec)

The limiting will be release the lesser ofrate the Q[

v flues satisfactory i relationships 6.7.1.a and 6.7.1.b. From section 5.1, the setpoint M=S g corresponding to this release ra(cpm) te may be described as:

Sg= QL . +b, where 14 fw ICi 1

f, = maximum release flow rate (ml/sec)

(

i 52 Cen. Rev. I l

l I , n

-, , - - . - . ,c.