ML19329E213

Discusses 750505 10CFR50,App I,Guidance for Design Objectives & Limiting Operation Conditions Re Alap Radioactive Matls Release from Lwrs.Addl Info Request for CP & OL Holders W/Applications Filed Prior to 710102 Encl

ML19329E213
Person / Time
Site:	Midland
Issue date:	02/23/1976
From:	Deyoung R Office of Nuclear Reactor Regulation
To:	Howell S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
References
NUDOCS 8006110624
Download: ML19329E213 (9)

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Docaet No: 5 329 50- 0 77 y q FEB 2 31978 i

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' ATTN 1Mr. S. H.'Howell T @.3 4 W

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RE: MIDLAND PLANT UNITS 1 AND 2-

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gA On May 5,1975,' the Coasiasion published Appendix I to 10 CFx Part 50 C '- fs I

which act forta numerical guides for design objectives and limiting oonditions for operation to meet the criterion "as low as practicable' m ygj water-cooled nuclear reactors.f section T.B of-Ap l

regarding releases of'rsdioactive satorials,in effluents from light d f Q d '{'l..

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holders of permits or' licenses. authorizing the operation of light - ~ ip92

.W January 2,1971, to file with the Commission by June 4,1976:

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water-cooled reactors, for which. application was filed prior to 7: I* MWP I

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Suca information as is necessary to evaluate the means employed

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for keeping levels of radioactivity in affluents to unrestricted areas as low as practicable, including all suca infor:sation as is required by paragraphs 50 34a(b) and (c) not already contained in the application; and 2.

Plans and proposed Technical Specifications developed for the purpose of keeping releases of radioactive caterials in unrestricted areas during normal reactor operations, including expected i

operational occurrences, as low as practicable.

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In a letter co you from D. Huller dated June 17, 1975, we indicated.

tnat the staff was in the process of developing guidance for licensees required to file information with the Comaission under the provisions of Sectico V.B of Appendix I.

This guidance is set forth in Ecolosare 1.

- aakes reference to proposed Regulatory Guidea 1. AA thru 1.FF. -

L Those duides have been publisned in draft form and are available in the i

Comission's public document room. Copies of those guides are being forwarded k

to you under separate cover, ne are preparing additional guidance regarding tne formulation of Tecnnical Specifications to implement Appendix I_ which will be forwarded to you in tne near future. We reconmend tnat proposals

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to.socity Tecnoical Specifications related to Appendix I be deferred -

pending tne completion of this guidance in order to obtain a. consistent" Ara. Avr CaGAQAQd1 Gal eII Autu E release Atc omes >

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. _- q7 y.., q nclosure 2 provides a list of information we will need to ovaluate your, facility.

The staff is in the process of determining whether plants for which.' %cf, p,, w,. a l.

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i manner similar to the treatment given to later planta in the Commission a c l

September 4,1975, Amendment to Appendix I.

On this basis,the information ^

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compliance with tne criteria set forth in Scotion II. paragraphs A. S 1 'l M ~^

and C of Appendix I and the design objectives set forth in the

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Concluding Statement of Position of the Regulatory staff in Docket AG*QMM

' RM-50-2. which is reproduoed as an Annex to Appendix I as amendedIf 4

September 4.1975.

'*.:#; q r plant speoitio assessment under section II.D.of' Appendix I, we.

W4 so inform you at a later time.

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Within 30 days of the receipt of tais -letter, you should infors us of thec:#q.q::@u I

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aeasures you intend to adopt or propose to meet the requirements of..M&

- paragraph 50.34a. - we suggest that a meeting between your staff aad itheir q2' s.,MAC staff be arranged; shortly thereafter to diseusa the submittal o(5='"kk.T2'Y

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4..,.W.e..WQN..,,k,o. "r.E data and methods of.evaluatio,n

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for Light Water Reactors Division of Prvject Management

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Guidance to Holders of Permits to Construct

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Prior to 1/2/71 to Neet the Requirenents

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Additional Information Needed from Holders

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Which Application was Filed Prior to 1/2/71 i

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Ye ab ENCLOSURE 1 Guidance to Holders of Permits to Construct or Licenses to Operate Light-Water-Cooled Reactors for Which Application was Filed Prior to January 2, 1971 to Meet the Requirements of Appendix I to 10 CFR Part 50 1.

Licensees should provide an evaluation showing their facility's capability to meet the requirements set forth in Section II of Appendix'I to 10 CFR Part 50.

2.

Radioacti.*e Source Terms used in the evaluation should be consistent with the paraceters and cethodology set forth in Draft Regulatory Guides 1.BB or 1.CC (as appropriate).

Note: For BWRs gaseous releases from the containment building and auxiliary building should be cocbined to form reactor building release for pre-BWR/6 Mark III Contain=ent designs.

3.

Meteorolocy/ Hydrology infor=ation used in the calculation of doses should be consistent with Draft Regulatory Guides 1.DD and 1.EE.

.4.

Dose calculations should be consistent with Draft Regulatory Guide 1.AA.

5.

Effluent Release Data from previous reactor operation should be provided, if available, for use in evaluating the scurce term calculations.

Such data should include at least one full year of effluent release data tabulated by effluent release point, month, mode of operation (e.g., full power operation, refueling shutdown),

excluding the first year of reactor operation.

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The above evaluations should be accompanied by the information requested in Enclosure 2 Exceptions from the information requested will be considered on a case-by-case basis.

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The staff is preparing standard Technical Specifications and will issue further guidance to licensees regarding changes to Technical Specifications to imple=ent the Appendix I objectives.

Proposed revisions to Technical Specifications by licensees based on the limiting conditions for operation set forth in Section IV of Appendix I should'be withheld pending further guidance from the staff.

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ENCIOSURE 2 Additional Infonraticn Needed from Holders of Permits or Licenses to Construct or Operate Light-Water-Cooled Reactors for Which Application was Filed Prior to January 2, 1971 1.

Provide the infonration requested in Appendix D of Draft Regulatory Guide :..BB or 1.CC, as appropriate.

2.

Provide, in tabular form, the distances from the centerline of the first nuclear unit to the following for each of the 22-1/2 degree radial sectors centered on the 16 candinal compass directions.

a) nearest milk cow (to a distance of 5 miles) b) nearest meat ankal (to a distance of 5 miles) c) nearest milk goat (to a distance of 5 miles) d) nearest residence (to a distance of 5 miles) e) nearest vegetable garden greater than 500 ft2 (to a distance of 5 miles) f) nearest site boundary For radicactivity releases from stacks which qualify as elevated releases as defined in Draft Regulatory Guide 1.DD, identify the locations of all milk cows, milk goats, meat an hals, residences, and vegetable gardens, in a similar manner, out to a distance of 3 miles for each radial sector.

3 Based on considerations in Draft Regulatory Guide 1.DD, provide estimates of relative concentration (X/Q) and deposition (D/Q) at locations speci-fled in response to item 2 above for each release point specified in response to item 1 above.

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4 Provide a detailed description of the meteorological data, models and parameters used to determine the X/Q and D/Q values. Include information concerning the validity and accuracy of the models and assumptions for your site and the representativeness of the meteorological data used.

5 If an onsite program comensurate with the recomandations and intent of Regulatory Guide 1.23 exists:

a) Provide representative arnual and monthly, if available, joint 4-frequency distributions of wind speed and direction by atmospheric stability class covering at least the most recent one year period of record, preferably two or more years of record. Wind speed and direction should be measured at levels applicable to release point elevations and stability should be detemined from the vertical temperature gradient between measurement levels that represent con-ditions into which the effluent is released.

b) Describe the representativeness of the available data with respect to expected long-tem conditions at the site.

6.

If recent onsite meteorological data are not available, or if the a

meteorological measurements program does not meet the recomandations and intent of Regulatory Guide 1.23:

a) Provide the best available meteorological data in the romat described in item 5.a above.

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. b) Describe the representativeness of the available data with respect to onsite and near site atmospheric transport and diffusicn conditions, and with respect to expected long term conditions at and near the site.

c) Provide a description of the meteorological measurements used for collection of the data presented. This description should include the location of the sensors with respect to the power plant (s) and other prominent topographic features (including buildings) and accuracy of the instrumentation.

d) Provide a ccmitment to establish a program to meet the reccmendations and intent of Regulatory Guide 1.23, or provide sufficient justifi-cation to allow the present program to remain uncPanged.

7 Describe airflow trajectory regimes of importance in transportirg effluents to the locations for which dose calculations are m2.de.

8.

Provide a map showing the detailed topographical features (as modified by the plant, en a large scale, within a 10-mile radius of the plant and a plot of the myimm topographic elevation versus distance from the center of the plant in each of the sixteen 22-1/2 degree cardinal compass point sectors (centered on true north), radiating from the center of the plant, to a distance of 10 miles.

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9. - Provide the dates and times of radioactivity releases from intermittant sources by source location based on actual plant operation and, if available, appropriate hourly meteorological data (i.e., wind direction and speed, and atmospheric stability) during each period of release.

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