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UNITED STATES
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9 ATOMIC ENERGY COMMISSION D*
l 'l WASHINGTON. D.C. 20545 q
s Docket No. 50-322 1 7 568 i
Dr. Carroll W. Zabel Chairman, Advisory Committee on Reactor Safeguards U. S. Atomic Energy Commission Washington, D. C.
Dear Dr. Zabel:
fortgghteen copies of the following are transmitted E
i review of the Comittee:
{
e LONC ISLAND LIGHTING COMPANY Transmittal letter dated September 6, 1968, and comments by the Air Resources Environmental Laboratory - ESSA, dated August 16, 1968, on Volumes I, II, III and IV of the Preliminary Safety Analysis Report for the Shoreham Nucicar Power Station.
Distribution:
D RL Read.
Sincerely yours, PPB-4 Read.
R Boyd N. D. Mason Peter A. Morr1y, Director f
70921 Division of Reactor Licensing 92 MENIB7-111
Enclosures:
j As stated above
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om, Form ado.318 (Rev.S43)
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.ugust 16, 1964
%,gg Frcr. the location of the alte aloeg the north shore of easts.rn Long Islanc, ene would agrm-with the ruport that " site is an open, a ll ventilated location influenced by the f raquent passage of a.xtra-t ropical cyclonus which produce varied wind directions and vi oroas wind sperds".
..1though micrometeorological measurements currently are being taken at the site, none have yet betn analyzed. !)owever, several decades of appropriate micrometeorological censurer.e nts are available f rom th Brookhavun National Laboratory, 8 riler to the south.
If af gnificant dif fereneus betusen th4-er teornlogy of the two sitna exist, they are expected to be evaluated in th, analysis of th
- thor:hau data.
In th; ints ria, it would seen reasonaute to. valuate the cif f usion capacit.y of the site f rom the Brookhaven data.
It is evident f ro.. the dif f usion regiisi s cepicted by th-Srookhaven data that th-typical lapu - invorsion diurnal variation ulats. This r-ay be soauvbat modific4 th= r oastal location of t.t noreham sita in l
that deep tenpcrature inversions woulu h4 cade tuas intensiv-in th:
f all and more intensivs in the spring.
aince the effluent release from the plant ventilstlun syst 2a. is a rsuf-top ve.nt on top of the raactor bailding at a height of simut 6 3 c., th-l proclau of downwash aroune the building shou,1d Le con sid e red.
..t tbc nearcat off-site boundary of 310 m this probably can btst or taken into account uy assuming a ground sours. appropriately modified for ac.citionsi
- uilcing. induced stuospherie dilution.
.*.de re not able to re solve th., apparant di screpenc y Let ween tb 4 least f avorable short tern ground re.1* ass dif fusion paraact.:rs listed in
- lables 11-9-9 and 11-9-12 and that of those in AIV- -1.
In the latter, an inversion wind spe ed of *. n/ sec i s u st o, f urther.or, the r-e tworolo,,1 cal assumption. in sections
.1.1 and + 1. 2 o f t.h ap t e r 41 V se., contradictory and hince relativc cif fusion values ar rmt li ved, it is difficult to ched the des-calculations in the chapt r.
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I f rom the description of the main staan line break, it would appear to be an instantaneous source. It is not cler whether this has been taken into account in tbs choice of values for tha diff usion parameters.
's Gifford 1 and stade 2 point out, peak to mean concentration ratios can vary by an order of ar.agnituco at distancas of 300 m from tne sourec.
In sunmary, the zetourological documentation and analysis presented in Chapter 11 f aite and environa) forms a good basis for th evaluation af the atmospburte dif fus8.on capacity of the si t e. Boever, the use of the se data in Chapter XIV (daisty anc tecidont rnalybe=> in not clear mainly be.cause of insuf fici. tnt inf orsation. Consequently, we art una01 +;
at this time to ewaluate prop.rly the dose calculations prescnted for the postulated accident uodes.
kaferences 1 Cifford, c. (1960), "Icak to nv.erage Concentration Latios ;ccording to a Fluctuatin; Pluca Lispersion ik: del", Inter. J.
ir roll.,
3(4), 253-260 2 alada, L. H. (1965), "auassary of tieasurents of Lispersion f rom.
i,ussi-Instantaneous bources", Fuc.. Safety 7(2), 223-2M.
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