ML070230432

Appendix C, ALARA Analysis Worksheet

ML070230432
Person / Time
Site:	Yankee Rowe
Issue date:	11/09/2005
From:	Yankee Atomic Electric Co
To:	NRC/FSME
References
Download: ML070230432 (3)

Text

ALARA Analysis Worksheet I Survey Area: SVC-01 Survey Unit: 18 I A. Estimation of Total Cost (CostT) work (CostR) (assume 3-staff crew for 1 day@average $60 per hour; cost for heavy equipment not included)

2. Cost of waste disposal (CostwD)= (2.a) (2.b)

a. estimated waste volume: 1 m3

b. cost of waste disposal: $670/m3

3. Cost of workplace accident (CostAcc)= $3,000,000 person'1 .4.2x10-' h-' (3.a)

a. time to perform remediation action: 30 person-hours

4. Cost of traffic fatality (CostTF)=

{$3,000,000 . 3.8~10"km-I (2.a) . (4.a))/(4.b)

a. total distance traveled per shipment: 4 100 km

b. waste volume per shipment: 13.6 m3, if unknown, use 13.6m3 as a default value

5. Cost of worker dose (CostwD,,,) = $2,000 per person-rem . (5.a) (5.b)

a. worker TEDE: remih

b. remediation exposure time person-hour I B. Survey Unit Radiological Information Radionuclide Average Concentration Relative Fractiona Half-Life (y) Decay constantb (y-')

1. Co-60 a. 6622 dpd100cm2 b. 1 c. 5.271 d. 0.13

2. a. b. c. d.

d.

8. a. b. c.

Total Concentration:

" Relative fraction = average concentration divided by the total concentration.

Decay constant = 0.693 divided by half-life.

DPF-8867.1 Page 1 of 3

I C. Calculation of ALARA Action Level (AL)

1. Removable fiaction for remediation action being evaluated: 1.0

2. Monetary discount rate: 0.03 v1

3. Number of years over which the collective dose is calculated: 1000 y

4. Population density for the critical group: 0.0004 ~ e o p l e / m ~

5. Area being evaluated: 100 m2

6. AL for each radionuclide-of-interest:

a. AL = {C0st~/($2000. C.4 0.025 C. 1 . C.5)) ((C.2 + B. 1.d)/(l-e-(C.2+B.1..d) ' C'3 ) (B.1.b) = 1356

b. AL = f C0st~/($2000 C.4 . 0.025 C. 1 . C.5)) . ((C.2 + ~.2.d)/(l -e-(C'2+B.2d)C'3 > (B.2.b) =

c. AL = {Costr/($2000 C.4 0.025 C.l C.5)) . f(C.2 + ~.3.d)/(l-e-(~.~'~.~~~~)'~~~ (B.3.b) =

d. AL = {COS~~/($($~OOO >

. C.4 0.025 . C.1 . C.5)) ((C.2 + ~ . 4 . d ) / ( l - e ' ( ~ " + ~ . ~ .fB.4.b)

. ~ ) ' ~ . ~=

e. AL = f C0st~/($2000. C.4 . 0.025 C. 1 . C.5)) f(C.2 + ~ . 5 . d ) / ( l - e - ( ~ . ~C'3 + ~ ..~(B.5.b)

..~)' =

f. AL = (C0st~/($2000 C.4 . 0.025 C. 1 . C.5)) ((C.2 + ~.6.d)/(l

• -e-(C.2'B.6.'d)

' C.3 (B.6.b) =

g. AL = {C0st~/($2000 C.4 0.025 . C.l C.5)) . f(C.2 + ~.7.d)/(l-e-(~.~'~.~..~)'~.~

• (B.7.b) =

h. AL = fC0~t~/($2000 C.4 . 0.025 . C.l C.5)) f(C.2 + ~.8.d)/(l-e-(~.~+~.~~.~)'~.~ ) . (B.8.b) =

7 ..............................................................................Sum ofALs (= ALARA AL) = 1356 E D .Evaluation Radionuclide DCGL DCGL Fractiona 9.. .........................................................................Sum of DCGL Fractions = 1.O I a DCGL fiaction = average residual concentration in survey unit (fiom Section B) divided by the DCGL.

DPF-8867.1 Page 2 of 3

10. Comparison of the sum of the DCGL fractions (D.9) to ALARA AL (C.7):

Check one: Sum of the DCGL Fractions < ALARA AL J Sum of the DCGL Fractions > ALARA AL

12. Decision Criteria: If the sum of the DCGL fractions < AL, then additional remediation is not cost beneficial. If the sum of the DCGL fractions > AL, then additional remediation is cost beneficial.

Check one: Additional remediation IS NOT cost beneficial J Additional remediation IS cost beneficial Prepared by 9 . /QrLPrZ Date 11-777 FSS Radiological Engineer Reviewed by d ' '&m/

FSS project Manager DPF-8867.1 Page 3 of 3