ML20205P731
| ML20205P731 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 03/25/1987 |
| From: | Macdonald J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | |
| Shared Package | |
| ML20205L804 | List:
|
| References | |
| OL, NUDOCS 8704030356 | |
| Download: ML20205P731 (4) | |
Text
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Dated:
March 25, 1987 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION before the ATOMIC SAFETY AND LICENSING BOARD i
)
In the Matter of
)
)
PUBLIC SERVICE COMPANY OF
)
Docket Nos.
50-443-OL NEW HAMPSHIRE, et al.
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50-444-OL
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Off-site Emergency (Seabrook Station, Units 1 and 2) )
Planning Issues
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)
AFFIDAVIT OF JAMES A. MACDONALD (TOK 4)
JAMES A. MACDONALD, being on oath, deposes and says as follov's:
1.
I am the Radiological Assessment Manager for New Hampshire Yankee.
My qualifications are a matter of record before the Board in these proceedings.
2.
An evaluation was conducted of the Kensington Elementary School based upon visual inspection and actual measurements of the outside of the building and windows in order to approximate its sheltering factor.
3.
The methodology used for the evaluation was, " Structure Shielding from Cloud and Fallout of Gamma Ray Sources for 8704030356 B70325 PDR ADOCK 05000443 g
1 n
Assessing the Consequences of Reactor Accidents," December 1975 to determine the shielding factor or dose reduction factor for the Kensington Elementary School.
4.
Based on a calculation, attached hereto and marked "A",
the evaluation concluded that the overall external shielding factor or dose reduction factor is approximately 0.77.
5.
I have visually inspected the outside of the building and had actual measurements taken under my direction.
I have reviewed the methodology, calculations and conclusion of the evaluation and concur with the results.
?MGd h-
/d WY JJames A. MacDonald STATE OF NEW HAMPSHIRE l)) M v Q )u MarchM[,1987 ss.
Then appeared before me the above-suscribed James A.
MacDonald and made oath that he had read the foregoing affidavit and that the statements set forth therein are true to the best of his knowledge.
Before me,
$24 (.('0 (:
I Ma LLww Notary Public My Commission Expires:
DO3iO J. r/ iT5.:t 7:- / M "c fv'y C:: - '
'a i 6.. ;r O,1931
SHELTERING CALCULATIONS Kensington Elementary School Based on measurements and observations of 3/24/87 See Floor Plan Attached Sheltering factor is based on wall and roof material, thickness, and percentage of total areal Asphalt Roof
- SF = 0.9 (10% dose reduction)
Concrete Wall /
Brick Faced
- SF = 0.38 (60% dose reduction)
Glass Wall
- SF = 1.0 (0% dose reduction)
Using these values and percentages calculated for each shielding material, the average sheltering factor for the building would be:
60%
27%
13%
Roof Concrete Walls Windows (0.9 x 7043sq') + (0.38 x 3114sq') + (160 x 1561sq')
= 0.77SF 11718 sq' total area All meesurements in. feet.
Total R3of Area Main building 74' x 40'
= 2960 sq' Additions (56'x75')-(3'x39') = 4083 sq' 7043 sq' Total Wall Area 11(40'+74'+11'+56'+36'+3'+39'+53'+39'+30'+13'+31') = 4675 sq' Brick Faced Concrete Area = Total Wall Area - Window Area = 3114 sq' Window Area (3.5'x6.5')+(4'x8'x6)+(6'x6.5')+(4'x8'x6)+(4'x8')+(4'x8'x3)+(6'x6.5')+(4'x8'x7)+
(3.5'x6.5')+(4'x8'x7)+(1.75'x6')+(3.5'x7)+(3.5'x7)+(4'x8'x6)
= 1561 sq' l Structure Shielding from Cloud and Fallout Gamma Ray Sources for Assessing the Consequences of Reactor Accidnets E66-1183-1670 December 1975 C/LK1286
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