ML19282A582
| ML19282A582 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 02/14/1979 |
| From: | Parr O Office of Nuclear Reactor Regulation |
| To: | Brian Lee COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 7903050076 | |
| Download: ML19282A582 (6) | |
Text
- [Sa msogb UNITED STATES
['s f' t NUCLEAR REGULATORY COMMISSION I
R 9, 6d WASHINGTON, D. C. 20555 gw j
- ...+
Docket Nos. 50-373/374 FEB 141979 Mr. Byron Lee, Jr.
Vice President Conmonwealth Edison Company P. O. Box 767 Chicago, Illinois 60690
Dear Mr. Lee:
SUBJECT:
CONTENTS OF THE OFFSITE DOSE CALCULATION MANUAL (La Salle County Station, Units 1 and 2)
The Radiological Ef fluent Technical Specifications for PWR and BWR facilities issued in November 1978, require you to provide an Offsite Dose Calculation Manual (0DCM) with your proposed Technical Specifi-cations implementing 10 CFR 50.36a and other Federal Regulations.
The enclosure to this letter describes the staff's reconmendations for the general contents of the ODCM.
The format for the ODCM is left to your discretion.
Sincerely, b. bn Olan D. Parr, Chief Light Water Reactors Branch No. 3 Division of Project Management
Enclosure:
General Contents of the ODCM cc w/ enclosure:
Richard E. Powell, Esq.
Isham, Lincoln & Beale One First National Plaza Suite 2400 Chicago, Illinois 60670 Dean Hansell, Esq.
Assistant Attorney General
' State of Illinois 188 West Randolph Street Suite 2315 Chicago, Illinois 60601 79030500%
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GENER AL CONTENTS OF THE 033?
Section 1 - Set Points Provid0 the enuations and re*hoddlocy to be used at the staticn or Unit for eash alarm and trip set point on each effluent release point accordine to the Speci fications 3.3.3.8 and 3.3.3.9.
Provide the alarm and control Incation, the monitor description, location, power source, scale, range and identification number, and the ef fluent isolation control device, its location, power source and identification number.
If the set point value is variable, provide the equation to be used to predetermine the set point value that will assure that the Specification is met at each release point, and the value to be used when releases are not in progress.
If dilution or dispersion is used, describe the on-site equipment and measurement method used during release, the site related parameters and the set points used to assure that the Specification it met at each release point, in-cluding any administrative controls applicable at the station or unit.
The fixed and predetermined set points should consider the radioactive effluent to have a radionuclide distribution represented by nornal and anticipated operational occurrences. Other features, such as surveillance requirements and the calibration method, should be addressed.
Section 2 - Liquid Effluent Concentration Provide the cauations and methodology to be used at the station or unit for each liquid release point according to the Specification 3.11.1.1.
For
- The format for the ODCM is lef t up to the licensee and may be sinplified by tables and grid printout.
Each page should be numbered and indicate the facility approval and effective date.
. continuous and/or batch releases, the assumptions used for manual and auto-natic tentination of releases shoul ' be provided.
For batch rel(a ses, th" calculational methods, ecuations and assumptions used, tooether with the pre-release and post-release analyses should be provided.
Other features, such as surveillance requirteents, sampling and analysis program, detection limitations and representative sampling should be addressed.
Section 3 - Gaseous Ef fluent Dnse Rate Provide the couations and methodology to be used at the station or unit for each gaseous release point according to Specification 3.11.2.1.
Consider the various pathways, release point elevations, site related parameters and radionuclide contribution to the dose inpact limitation.
Provide the equa-tions and assumptions used, stipulating the pathway, receptor location and receptor age. Provide the dose factors to be used for the identified radio-nuclides released. Provide the annual average dispersion valuc s (X/0 and D/Q), the site specific parameters and release point elevations. Other features, such as surveillance requirements, sampling and analysis program, detection limitations and representative sampling should be addressed.
Section 4 - Liquid Effluent Dose Provide the equations and methodology to be used at the station or unit for each liquid release point according to the dose objectives given in Speci-fications 3.11.1.2.
The section should describe how the dose contributions are to be calculated for the various pathways and release points, the equations and assumptions to be used, the site specific parameters to be
. reasured and used, the receptor location by direction and distance, and the nethod of estir.ating and updating cumulative doses due to 1iouid releases.
The dose factors, pathway transfer factors, catht:ay usace factors, and dilution factors for the points of pathway oricin, etc., should be given, as well as receptor age group, water and food consumption iate and other factors assumed or neasured.
Provide the nethod of detent..ning the dilu-tion factor at the discharge durinc any liquid effluent release and any site specific paraneters used in these determinations.
Other features such as surveillance requirements, sampling and analysis program, detection limitations and representative sampling should be addressed.
Section 5 - G'aseous Effluent Dose Provide the equations and rethodology to be used at the station or unit for each gaseous release point according to the dose objectives gisen in Speci-fications 3.11.2.2 and 3.11.2.3.
The section should describe how the dose contributions are to be calculated for the various pathways and release points, the equations and assumptions to be used, the site specific para-meters to be measured and used, the receptor location by direction and dis-tance, and the method estimating and updating cumulative doses due to gaseous releases.
the location direction and distance to the nearest residence, cow, goat, meat animal, garden, etc., should be given, as well as receptor age group, crop yield, grazing time and other factors assumed or measured.
Provide the method of detemining dispersion values (X/Q and D/Q) for short-term and long-term releases and any site specific parameters
. and release point elevations used in these deterninations.
Al so, provide the criteria for deternining short and lona term releases.
Othe features such as surveillance reauirements, sarpling and analysis progra, detection limitations and representative sanpling should be addressed.
Section 6 - Projected Doses For liquid and gaseous radwaste treatment systems, provide the method of projecting doses due to effluent releases for the normal and alternate path-ways of treabuent according to the specifications, describing the components and subsystems to be used.
Section 7 - Operability of Eauioment Provide a flow diagram (s) defining the treatment paths and the components of the radioactive liquid, gaseous and solid waste management systems that are to be maintained and used, pursuant to 10 CFR 50.36a, to meet Technical Specifications 3.11.1.3, 3.11.2.4 and 3.11.3.1.
Subcomponents of packaged equipment can be identified by a list. For operating reactors whose con-struction pennit applications were filed prior to January 2,1971, the flow diagram (s) shall be consistent with the information provided in conformance with Section V.B.1 of Appendix I to 10 CFR Part 50.
For 01. applications whose construction permits were filed after January 2,1971, the flow diagram (s) shall be consistent with the infornation provided in Chapter 11 of the Final Safety Analysis Report (FSAR) or amendments ti ereto.
. Sec tior, f: - Eartle Locations Frovide a r.ap of the Fadiolocical Enviror..er tal "onitoring.arple Locations indicating the nunbered sarpling locations given in Table 3.12-1.
Further clarification on these nunbered sanpling locations can be provided by a list, indicating the direction and distance froir, the center of the building complex of the unit or station, and may include a discriptive name for identification purposes.
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