ML19322C118
| ML19322C118 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 08/04/1976 |
| From: | Jay Collins Office of Nuclear Reactor Regulation |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7912300269 | |
| Download: ML19322C118 (3) | |
Text
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v AUG 0 41976 Occhet Nos.
0-2f' 270/267 A. Schwencer, Chief Cperating Reacters branch No. '.. DCR ACCEPTtJ CE REVIEW OF THE APPEHOIE I ItrFOPu.AT10:1 FOR UC Oh!T 105.1. 2, /J,0 3 Ve have completed our acceptance review of the inforsation provtced by tne licensee for Cconce Euc1 car Station, t.'t.it tees.1, 2, and 3. catcc June 4.197f. te rMet the requirenents of Section V.B cf Apr,en31x ! te 10 CFR i art 60.
The licensee has not Droviced sl1 of tt'c infors.htico
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heeoed to / err.it evaluation of Section II.0 under the 1.nnex to Appendix l
1 ef 10 CFh Part St.
release points and the utecrological "casurments procraai.Infomatien it.e kadiological Ascessr.ent trench finds that the informtion preytscd 15 satisfactory for its evaluatico.
The Bjarolop-heteoroloey 3 ranch end ti.c Effluent 1reatnent Systets Branch recuire additional inferratten to complete tucir ociatled evaluatien. The cuesttens are enciesed.
ORIGINAL SIGNED BY W. C. BURKE John T. Collins, Chicf 4
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.7 AUG 0 41976 0Cet.EE t'#. U /A STt.T IC S t,0Crri t:05. 50-?M/2M/2S7 REQUEST IOP ti.,311TCHAL 1600H T10M 1.
Previde the description of the Turbino Building C.xhcust Systen, including flow rate, velocity, neight accve gradi, heignt above and relative location to adjacent structures, relative tcuperature 1
difference between exhaust effluent and ertisnt air, and size and shatic of the flow crifice.
2.
Indicate if each eff1t,ent releate roint is equiryd with diffusers 3
i or sprenders.
3.
Tne onstto netcorological reasurecents progran dees not neet tbc recomencations of Regulatery Guide 1.23 with respect to elevetions and exposure of scntors. Vind speeo sud directior are r.ot ocesured at the 10 unter 1cvel *teccuse of inacequate exposure near tne ground" presmably caused by *20 noter trets near the tower 1:ase." Tbc lewar tenperature sensor used for tre reasuree.ent of vertical teoperature gradient is located only 1.S meters at;cve the pround, Mich would bias the resultant steoscheric stability distribution towards er-trc*ely onstahic and cxtrenely stable conditions. The effect of this bias on est1%ates cf 4toospheric diffusion and deposittor frx partially elevated releases is r.ct clear. The reaserment of vertice1 tenerature gradient uculo aisc oe affcctec ty *20 reter trees near tbc tower case." ite present location of the reteorological toer v.sy not provice repretentative data for an assessncnt et atws;heric transport and diffusion characteristics at nr.c rear the plant site.
To allow us to proceed with car /nen:ix 1 evcluatten:
a.
Discun the rttionale for the nrcsant location of tim cnsitt reteorological tcwer with respect te tne represer.tetten of stnospheric transtrort cod dif fusion charactertstics h<ind speed, wiec direction, and Vertical terparature gracient) at and near the site.
b.
Assess the inpact of usino t% 1.5 reter icvel for the icwer i
sensor for masuring verticel terperatura grecient on estimates of str.cspheric 11ffusion and 6eposition, partituisrly from certially elevated releases. Also, icentify the surface characteristics inmediately belcw the 1.5 ceter tenperature senscr.
c.
Discuss the effect of "20 Feter trees near the tower base" en
.the wiessurment of vertical tes::ccrature gradient.
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