ML20210S917
| ML20210S917 | |
| Person / Time | |
|---|---|
| Site: | Satsop |
| Issue date: | 06/24/1975 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | Deyoung R Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-1701 NUDOCS 8605290507 | |
| Download: ML20210S917 (21) | |
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i WPPSS 3, 5 SER 2.0 Site Cnaracteristics 2.1 Geography and Demography 2.1.1 Site Location The site is located in southeastern Grays Harbor County, Washington, on'e mile southeast of the confluence of the Satsop and Chchalis Rivers. The site is approximately 16 males east of Aberdeen, Washington, and 26 miles west-southwest of Olympia, Washington. The geographic location of the site is shown in Figure 2.1. O D e
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m- ) . 2.1.2 Site Description and Exclusion Area Control The site consists of 2450 acres, the largest part of which is located on a ridge above the Chehalis River. The planned location of the plant structures is at an elevation of 390 feet ab^ove MSL. The principal fea-tures of the site including che plant structures and boundary lines are shown in Figure 2.2. The exclusion area is approximately circular in shape with a minimum bound-ary distance of 4,300 feet (1,310 meters). The applicant will own only part of the exclusion area and will obtain thd authority to determine all activities within the balance of the' exclusion area by enterine into aeree-ments with the land owners and through the granting of appropriate easements on these non-owned properties which will convey to the applicant the authority to control access. The only activities unrelated to plant operation on the non-owned properties within the exclusion area will be timber farming activities, and these activities will be controlled through the use of easements. The applicant presently owns about 272 acres (not all of which is within-the exclusion area) and is negotiating to purchase approximately 796 acres within the exclusion area which are presently owned'by private corporations. It is the applicant's intent to purchase the mineral rights on all lands to be acquired in fee. The applicant expects all land purchases to be + c - -----L ------- --
) . completed by July,1975. We will require that the portion of the exclusion area required for plant construction, which is included in the portion the applicant intends to own, be acquired by th'c applicant before an LWA can be issued. The remainder of the property within the exclusion area vill not be owned by the applicant. This property is owned by individuals or private corporations with the exception of a 16 acre tract which is owned by the State of Washington. Th'ese lands are all commercial tree farms. The ease =ents to be obtained by the applicant on these non-owned lands will specify that the applicant will be notified in advance of the co==ence=ent of any activity which is undertaken in these areas and in advance of any entry on these lands by the owner, his agents or employees. In addition, no buildings or, residences of any kind may be constructed in' these areas other than te=porary structures and facilities as ccy be necassary for timber far=ing operations. Plans and specifications for construction of any such te porary buildings will be submitted to the applicant for review and approval. Theisineral rights for the non-owned lands will not be acquired by the applicant, however, the esserests vill include control over nineral rights and will specifically exclude cin2:al. exploratica and mining activities. The applicant e::pects all ner,atiations concerniag the cgreements and eas:nents on the non-owned lands within the exclusion area to be completad by July,1975.
T:' ) - - 4.Q We conclude that the authority granted to the applicant through the agreecents and essecants entered into with the property owners of the land within the exclusien area which the applicant will not own can However, before giving ec= ply with the requirecents of 10 CFR Part 100.. a final opinion on this matter, we will require that the applicant produce for our reviaw the e.xecuted cgrae:ents granting the ease:enta, of produca persuasive evidence such as letters of intent with the property owners including the State of Washington, to demonstrate reasonable assurance that the applicant will have the proper authority regarding activities within the exclusion area. The exciusion area will not be traversed by any public waterways or railroads. A Grays Harbor County road, an extension of Keyes Road, A Bonneville Power will provide vehicular access to the exclusion area. The Adninistration transnission corridor also crosses the exclusion area. applicant has initiated discussions with the County and BPA to obtain the authority to control access to the exclusion area on these routes and anticipates that final agreements will be cade prior to August 1, 1975. +
I j 2.1.3 Population and Population Distribution The proposed site is located in a rural area with low pcpulation. The 1970 census population and the projected resident populations in the e.rea surrounding the site are shown in Table 2.1. TABLE 2.1 1970 Census and Projected Population
- Radius, 1980 2020 Miles 1970 0 - 10 9,733 10,451 13,469 0 - 30 124,557 141,275 219,785 0 - 50 345,941 391,475 601,690 i
.. ) 1he 1980 cumulative resident population as a function of distance .is shown in Figure 2.3. For reference, the cumulative population corresponding to a moderately populated area of 500 people per square mile is also shown. ' The data in Figure 2.3 illustrate that G the population at all distances out to,50 miles from the site is less than 500 people per square mile. D G e 6 9 .r,, ,,--,w ---en --+----,,-,,y -,,,ns . - ~~
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S c I-We obtained an independent estimate of the 1970 population within 50 miles of the site. from Bureau of the Census data and found that our population figure (370,784) agreed reasonably well with the applicant's value. The applicant's projected population growth rate to the year 2020 for the area within 50 miles of the - site was compared to the population ' projections of the Bureau of Economic Analysis for Economic Area 155, an area comprising approximately the western half of the State of Washington. This comparison showed that the applicant's growth projection of about 12% per decade was higher than the BEA projection of 6% per - decade for Area 155. r1
i o l Grays Harbor County attracts a number of daily and seasonal tran-sients, primarily -during the su==cr conths. The majorit'y of these transients are visitors to the Pacific Coast area of the county sona 30 miles west of the site. He conclude that these transients (other than highuay travelers) do not significantly alter the population distribution (e.g., the average transient population at parks within 10 niles of the~ site would increase the population density by about 15%). The applicant has selected a low population zone with an outer radius of 3 niles. The total 1970 resident population within the low population zone was 260 persons, the cajority of which resided in the Chehalis River Valley. There are no significant transient populations within the low population zone other than highuay travelers through the -area. As a result of o'ur evaluation of the lou population zone proposed by the applicant for the UNP.-3 and UNP-5. site, we conclude that there is reasonable assurance that the 10 CFR'Part 100 definition of the lou population zone can be satisfied in that we have not identified any unusual characteristics with respect to the low population zone which would prevent the develop =2nt of appropriate energency response procedures. The nearest population center, as defined in 10 CFR Part 100, is the Abardeen-Hoquiaa urban area, which contained a 1970 population of 28,549 persons. Furthermore, we project that no area closer than the Aberdeen-Hoquiam area will devalop into a population center uithin the
P . operating lifetime of the proposed RNP-3 and RNP-5 facilities. The Aberdean-Hoquina populated area, as well' as its political boundary, begins at a point more than ten miles west of the site. This distance satisfactorily meets the 10 CFR Part 100 requirement that tha population center distance be more than one-and-one-third tites the lost population zone distance. 2.1.4 Conclusion On the basis of the 10 CFR Part 100 definitions of the exclusion area, low population zone, and the population center, and the calcu-lated radiological consequences of postula,ted design basis accidents (presented in Chapter 15 of this report), we conclude that the ex-clusion area, low population zone, end population center distances specified for the WPPSS Nuclear Project 3 and 5 meet the requirements of 10 CFR Part 100 and are acceptable. 4 L w
. 2.2 Nearbv Industrial, Transportatinaaad Militarv 'scilities There is little industrial activity in the vicinity of the proposed. site. one small manufacturing facility employing 10 persons is located 4.8 miles northwest of the site. The applicant states that there are plans to ecnstruct a chemical plant 4.7 miles east-northeast of the site. ThIs facility will employ about 50 people and the main product will be bleaching c!.emicals for the pulp ' industry. A quantity of methanol and nitrogen gas will be stored at the chemical plant but,
- Eecause of their distance from the site, these caterials will present no hazard to the proposed nuclear plant.
U. S. Itighway 12, the major highway in the vicinity of the sito, is a fo tr lane divided highway which passes in an east-west direction through ' the Chehalis Valley about 3 miles north of the site. A single track railroad line, maintained by the Union Pacific Railroad, runs along the south bank of the Chehalis River apprcximately one 'ntle north of the proposed location of the plant structures (cad about 350 feet lover in e'levation). A tain line of the Northern Pacific L Railroad runs through the Chehalts Valley about three miles north of the site. The average daily rail traffic on the Union Pacific line is cocprised of two freight trains carrying mainly lumber and related products. Some hazardous catorials are shipped on this line and consist primarily of cauktic soda,' chlorine, and propane. It is also projected that about one tank car of cathanol will be shipped,on the railroad every threc - - ~.
v-S / i to four months when the new chemical plant east-northeast of the site is in operation. The applicant has evaluated postulated accidents en the ' railroad one mile north of the site including an explosion, formatior, of a flammable vapor cloud, and a chlorine release. We have rev'lewed the analyses and agree with the applicant that the occurrence of any of these railroad accidents will not adversely affect the safe operation of the nuclear plant. The Chehalis River flows in a westerly direction in the valley about one mile north of the site. The river is used by small pleasure and fishing craft and is not utilized for commercial barge transportation in t he i vicinity of the site.
r ~ ? i a Elma Municipal Airport is located approximately two miles northeast of the sit's. The airport has a single turf runway 2,000 feet in length and is used by light private aircraf t. It is estimated that at present there are approxicately 1,825 operations per year. The applicant states that expansion of the airport is currently under study and, depending on the results of the study and availability of resources, there are plans to pava the runway and extend it to approxicately 3,500 feet. With the proposed improvecents the airport will be capable of handling aircraft up to 12,500 pounds gross weight. The applicant cites 'a Washing-ton State planning document which projects a growth to approximately 4,000 operations per year for the Elca airport. The Federal Aviation Administration's national airport system plan, published in 1972, projects 7,000 operations per year at Elca in 10 years, all of which will be aircraft under 12,500 pounds. The nearest airport with commercial scheduled flights is Bewerman Airport located in Hoquiam about 22 miles west of the site. An airway between Olympia and Hoquiam passes near the site area and there are currently 12 scheduled flights per day between these cities by single engine and light twin-engine aircraft at altitudes between 5,000 and 10,000 feet. This airway is also reutinely used for training flights by the U. S. Ar=y from Fort Lewis, Washington, flying single and twin-eagina aircraft and helicopters. The applicant has obtained estinatos of the military traffic which indicate that the max 1 hum number of such flights .is 15 to,20 per day with the average escitated to b 15 per month. e approximately 12 tu I l
I ~ K . On the basis of previous analyses of aircraf t activity at other nuclear power plant sites, we conclude that the type and number of aircraft described above are not significant with respect to plant safety. In addition, the Air Force conducts high altitude flights between McCord AFB and U. S. Air Bases in the Pacific that, according to the information in the.PSAR, may occasionally bring aircraf t within 10 miles of the site. The applicant has been requested to provide information regarding the number of flight and an estimate of the probability of a damaging aircraf t accident at the site. We will determine, upon receipt and review of this information, whether these activities impose any significant risk on the plant. The applicant states that there are no military facilities or pipelines in the vicinity of the site. The area around the plant will be cleared to provide a minimum distance of 300 feet from the safety related 9 structures to protect the plant against forest fires. On the basis of our review of the industrial, transportation, and military activities in the vicinity of the proposed WPPSS 3, 5 site, we conclude' that there are no nearby activities which have the potential for interfering with the safe operation of the WPPSS 3,5 plant and that with respect to offsite hazards the plant design is acceptable. k _/*b"
7 -- a- - 14'- I 3.5.1 Tornaio Missiles We have reviewed the information presented in the PSAR regarding tornado missiles and find the applicant's missile velocities unacceptable. On the basis of our previous evaluations, we will require that the WPPSS 3, 5 -plants be designed to withstand the i= pact of the following spectrum of missiles (described in WASH-1361) and impact velocities: 1 A - k'ood plank 4 x 12" x li 20: Ib 42;' fps B - Steel pipe 3" 0, 20' long, schedule 40 78 lt 010 fps C - Steel rod 1" 6 x 3' leng S lb-210 fps D. Steel pipe 6" 0, 15' long, schedule 40 085 lb 210 fps E - Stec1 pipe 12" 0, 15' lonr., schedule 40 743 lb 210 fp.s T-- Utility pele 12.5" 0 x 35' Ier.g 1400 lb 210 fpr G - Automobile 20 ft2 frontal 4000 Jb 100 fps area These tissiles are to be considered as striking i,n all directien3, , Missiles A, B, C, L. and E are to be considered at all clevations and missiles F and C at elevations up to 30 feet above all grade 3cvels within 1/2 =ile of the facility. structures. e L
I - 13 AltSraa:ivei,y, bas d oa en ir.terim review cf TVA's Topical Report c TVAaIR74 rt, we hava found that the use of trieir no-tunblinp horizonta1 velocities in addition to a 4000-lb automobile at 70 rph forms an adequately conserv.ative design basis for WPPSS 3, 5. Vertical velocities equal to 80% of the TVA vo-tumbling horizontal t velocities vill also be acceptable on an interim basis. These velocities are sumarized in the following tab.le. TORNADO MISSIll VELCC!'IIE$ ACCEPTLD IN INTERIM EVALUATION.0F TVA-TR74-1 Horizontal Ykrtichl .Veleeicy_ Velocitv A - Wood plank 4" x 12" x 17 ' 200 lb 368 fps 294 fps t - StecJ pipe 39 0, 15' long, r,chedulc 40 115 lb 268 fps 214 fps, C - Steci rod }" 0 3' lear S lb 25') fps 207 fps D - Steci pipe t2" d, 15' long, 300 lb 230 fps ISS fps schedule 40 E - Steel pipe 12" 0, 30' long, 1500 lb 205 fps 164 fps schedule 40 i F - Utility pole 14" 0 x 35' long 1500 lb 241 fps 193 fps 2 C - Automobile 20 ft frental 4000 lb 200 fps 80 fps area Missiles A, B, C, D, E, and F are to be censidered at all elevations and missile G at c)cvations up to 30 feet above all grade IcVels within 1/2 mile of the facility structures. 6
r 6 e 3.5.2 Turbine Missiles The applicant has arranged Unit 3 and 5 turbine generators in a peninsular orientation. This configuration excludes all systems either essential to a safe plant shutdown, or susceptible to significant radio-logical consequences when damaged, from the low trajectory turbine missile strike zone. We are currently performing a generic study on the matter of turbine missiles. When the results of our study are available, we will evaluate the significance of potential high trajectory turbine missiles on this facility and will determine whether additional protection is required beyond that aircady offered by the present turbine orientation and structural barriers described in the applicant's PSAR. It is antici-pated, bewever, on the basis of the staff's preliminary analysis of high trajectory missile damage probability with respect to WPPSS Units 3 and 5, that additional protection requirements (if any) would be primarily related to items such as overspeed protection and valve testing procedures. 6 s A- .A}}