ML20004A997
| ML20004A997 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/19/1981 |
| From: | Counsil W NORTHEAST NUCLEAR ENERGY CO. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-02-01.B, TASK-2-1.B, TASK-RR A01452, A1452, NUDOCS 8105270089 | |
| Download: ML20004A997 (9) | |
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May 19, 1981 A
Docket No. 50-245 g
A01452 6
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~ " 8 % c,fs h dfoer AS Director of Nuclear Reactor Regulation 3,
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Attn:
Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch #5 U. S. Nuclear Regulatory Commission N
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b Washington, D.C.
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References:
(1)
D. G. Eisenhut letter to SEP Plant Licensees, dated January 14, 1981.
(2)
W. G. Counsil letter to D. G. Eisenhut, dated February 27, 1981.
Gentlemen:
Millstone Nuclear Power Station, Unit No. 1 SEP Topic II-1.B, Population Distribution As part of the redirection of the Systematic Evaluation Program, Reference (1), Northeast Nuclear Energy Company (NNECO) committed to develop Safety Assessment Reports (SAR's) for certain SEP topics which would be submitted for Staff review. NNECO detailed this corraitment and provided a schedule for submittal of SAR's in Reference (2).
In accordance with this commitment, NNECO hereby provides the Safety Assessment Report for SEP Topic II-1.B, Population Distribution, which is included as Attachment 1.
We trust the Staff will appropriately use this information to develop a Saf:.Ly Evaluation Report for this SEP topic.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY
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Nb7101 W. G. Counsil Senior Vice President M 05 27oOM
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pocket No. 50-245 4
Safety Assessment Report SEP Topic II-1.B; Population Distribution May, 1981
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MILISTONE NUCLEAR POWER STATION, UNIT NO. 1 SEP SAFETY ASSESSMENT REPORT Topic 11-1, B - Population Distribution 1.0 Introduction The objective of this topic is to assure that the Low Population Zonc and population center distances specified for the plant site are com-
'patible with the current population distribution and are in conformance with the definitions and distance criteria of 10CFR Part 100.
The capability of the plant to meet the dose criteria of 10CFR Part 100 at the boundary of the low population zone will be evaluated in the Section XV design basis event phase of the SEP review.
The adequacy of emer-gency preparedness planning for the area surrounding the plant including the low population zone is being assessed by the Commission in a separate review effort.
2.0 Criteria j
Standard Review Plan Section 2.1.3 states:
The specified low population zone is acceptable if (a) it is determined that appropriate protective measures could be taken in behalf of the enclosed populace in the event of a serious accident; and (b) the nearest boundary of the closest population center (as defined in Part 100) is at least one and one third times the distance from the reactor to the outer boundary of the low population zone.
The population center distance is acceptable if there are no likely concentraticas of greater than 25,000 people over the plant lifetime closer than the distance designated by the applicant as the population center distance.
3.0 Discussion j
i As shown on the attached Figure 1, the 50-mile radius from the Millstone site encompasses parts of three states - Connecticut, Rhode Island, and New York. The total resident population within this area was 2.5 l
million in 1970. The Low Population Zone (LPZ) has been defined as being outside of the exclusion area but anywhere else within a 2.4 mile radius..The attached Figure 2 depicts the area included in the LPZ.
l The maximum dose received by any individual in this zone, following i
the hypothetical Design Basis Incident, would be less than the guidelines presented in 10CFR Part 100.
There are no residents within the Exclusion Area.
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I The nearest population center, as defined in lOCF2 Part 100 is New London, j
Connecticut. The Millstone site is located 3.2 miles west - southwest of the New London town limits.
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, Population distributions have recently been developed using the most recent available data as part of the Emergency Planning requirements of Appendix E to 10CFR Part 50.
Figure 3 is the 1980 projected resident population rose for the Millstone site out to a 50 mile radius, de-picted in 22 zones each, represented by a compass direction and an identifying alpha-numeric character. Figure 4 is the 1980 projected total population distribution for a 50 mile radius around the Millstone site which includes both reridential and transient population. The estimates of seasonal population in the vicinity of the Millstone site (0-20 mile radius) are based on increased use of sunmer dwellings.
These estimates include the following assumptions:
1.
The capacity of public lodgings is 7,045 persons 2.
The capacity of the Rocky Neck camping facilities is 1,425 3.
Average day users at State parks is 8,100 The coastal land beyond the 20-mile radius attracts many visitors over the summer months; however, the majority of shore visitors in the Connecticut - Rhode Island area are local residents. Their presence at the shore is more representative of a shift in location within the area covered than it is of a net increase in population. No significant variations in population occur in periods shorter than by season since the residents typically live around their place of employment. Data on such daily population shifts is unavailable.
Significant governmental, public, and private ir.itutions within 10 miles of the Millstone site are as follows:
Nearest Staff /
Name Location Sector Distance (Miles)
Employees U. S. Navy Groton NNE 8.0 16,250 Submarine Base General Dynamics, Groton ENE 5.5 20,000 Electric Boat Co.
Pfizer (Chemicals)
Groton ENE 5.5 2,700 Connecticut College New London NE 5.5 2,070 Mitchel College New London ENE 3.5 1,185 U.
S. Coast New London NE 5.5 1,630 Guard Academy As stated earlier, there are no residents within the Exclusion Area of the Millstone Station. Although the total population has increased within the 2.4 mile LPZ, the population distribution has not changed significantly.
l The nearest population center is still the city of New London, Connecticut.
The New London town line is 3.2 miles east-northeast of the Millstone site.
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4.0 Conclusions The LPZ and population center distance specified for the site are in conformance with the criteria of 10CFR Part 100 and Standard Review j
l Plan Section 2.1.3.
Therefore, Millstone Unit No. 1 meets current licensing criteria and no further review for this topic is required.
i 5.0 References 1.
Standard Review Plan, Section 2.1.3.
I 2.
Millstone Nuclear Power Station,' Unit No. 2 Final Safety Analysis Report.
3.
D. L. Ziemann letter to D. Bixel, dated November 27, 1979.
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