ML19316A048
| ML19316A048 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 02/19/1976 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19316A046 | List: |
| References | |
| NUDOCS 7911210613 | |
| Download: ML19316A048 (6) | |
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ENCLOSI!RI 1 Guidance to Holders of Per=1ts to Construct or Licenses to Operate Light-Water-Cooled Reactbrs for Which Application was Filed Prior to January 2, 1971 to Meet the Require =ents of Appendix I to 10 CFR Part 50 1.
Licensees should provide an evaluation showing their facility's capability to =eet the requirements set forth in Section II of Appendix'I to 10 CFR Part 50.
2.
Radioactive Source Ter=s used in the evaluation should be consistent with the para eters and =cthodology set forth in Draft Regulatory Guides 1.3B or 1.CC (as appropriate).
Note: For BWRs gaseous releases fro =
the. contain=ent building and auxiliary building should be co=bined to for= reactor building release for pre-3WR/6 Mark III Contain=ent designs.
3.
Meteorolo27 Eedrology infor=ation used in the calculation of
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doses should be consistent with Draft Regulatory Guides 1.DD and 1.EE.
4 4.
Dose Calculations should be consistent with Draft Regulatory Guide 1.AA.
l 5.
Effluent Release Data fro = previous reactor operation should be provided, if available, for use in evaluating the source ter=
calculations.
Such data should include at least one full year of I
effluent release data tabulated by effluent release point, =onth, mode of' operation (e.g., full power operation, refueling shutdown),
excluding the first year of reactor operation.
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6.
The above evaluations should be acco=panied by the infor=ation requested in Enclosure 2 Exceptions from the infor=ation requested will be considered on a case-by-case basis.
7.
The staff is preparing standard Techn cal Specifications and will issue further guidance to licensees regarding changes to Technical Specifications to i=ple=ent the Appendix I objcetives.
Proposed revisions to Technical Specifications by licensees based on the limiting conditions for operation set forth in Section I'/ of Appendix I should' be withheld pending further guidance iro= the staf f.
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Additional Infomatien Needed' f:na Holders of Pe=its er Licensss to Constn:ct or Operate Light 'JateFAoled Reacters for Milch Application was Filed Pricr to January 2, 1971 1.
Provide the infomatien requested in Appendix D of Draft Regulatcry Guide 1.BB or 1.CC, as appropriate.
2.
Provide, in tabular fom, the distances fac:a the centerline of the first nuclear unit to the follcwing fer each of the 22-1/2 degee rad 4al sectors centered en the 16 card &21 ccmpass directions.
a) nearest milk cow (to a distance of 5 miles) b) nearest = eat antal (to a distance of 5 miles) c) nearest milk scat (to a distance of 5 miles) d) nearest residence (to a distance of 5 miles) e) nearest vegetable garden F eater than 500 ft2 (to a distance of 5 miles) f)
nearest site boundary Fcr radicactivity releases frca stacks which qualify as elevated releases as defined in Draft Regulatory Guide 1.DD, identify the locations of nil milk ccws, milk goats, ceat animals, residences, and vegetable gardens, in a simM r canner, out to a distance of 3 miles for each RPM *P' sector.
i 3
Based en censideratiens in Draft Regulatory Guide 1.DD, pro de estimates of relative concentratien (X/Q) and depositien (D/Q) at locations speci-fled in respense to item 2 above for each release point specified in response to iten 1 above.
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2-4 Provide a detailed descriptien of the reteorological data, models and 1
i parameters used to dete.Wa the X/Q ard D/Q values.
Include inferation concerning the validity and accuracy of the models and assu=ptiens for your site and the representativeness of the metecrological data used.
5 If an ensite pregam ccanensurate with the recem.endations and intent of i
Regulatory Guide 1.23 exists:
a) Provide representative annual ard renthly, if available, joint frequency distributiens of wirri speed and direction by atmospheric stability class covering at least the most recent cne year period of reccrd, preferably two cr more years of reconi. Wird speed a-d I
direction shculd be measured at levels applicable to release point elevations and stabi'ity shculd be deterdned frcm the vertical temperature g adient between measurrant levels that represent cen-ditions into which the effluent is released.
b) Describe the representativeness of the avn4'9hle data with respect to expected icng-tena ccnditions at the site.
6.
If recent ensite metecrological data are not av947951e, or if the.
metecrclogical measurements pro gam does not meet the reccmaddations l
' and intent of Rer!'ntory Guide 1.23:
i a) Provide the best avn41able =eteorolcgical data in the femat
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described in item 5.a above.
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3-b) Cescribe the representativeness of the available data with respect to ensite and near site at=cspheric tr. sport and diffusien conditiens, and with respect to expected icng term ccnditiens at and near the site.
c) Provide a description of the meteorological meastrements used for collection of the data presented. This description should include the locatien of the senscrs with respect to the pcwer plant (s) and other precinent tcpegaphic features (including buildings) ad accuracy of the instrumentaticn.
d) Provide a cca::ittent to establish a pregam to meet the recu....erdations ard intent of Regulatcry Guide 1.23, or provide sufficient justifi-catien to allcw the present pregam to retain uncl2_nged.
7 Descrite airflow trajectcry resdr.es of !=pertance in trsnsperting effluents to the locatiens for which dose calculatichs are made.
8.
Provide a map shcwing the detailed tcpo paphical features (as acdified by the plant, en a large scale, within a 10-mile radius of the plant and a plot of the W n tcpo paphic elevatien versus distance frca the center of the plant in each of the sixteen 22-1/2 degree cardinal ced: pass point sectors (centered en tme ncrth), radiating f: ma the center of the plant, to a distance of 10 miles.
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9 Provide the dates and tir.es of radicactivity releases frem inte:rd.ttant sources by scurce locatien based en actual plant operation and, if avniinhle, apprcpriate hcurly :netecrological data (i.e., wini direction ani speed, and at:acspheric stabi7ity) durir.g each period of release.
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