ML19250C152
| ML19250C152 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 11/01/1979 |
| From: | Counsil W NORTHEAST UTILITIES |
| To: | Grimes B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7911080360 | |
| Download: ML19250C152 (5) | |
Text
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.a K N EITII.ITIES 9
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November 1, 1979 Docket Nos. 50-245 50-336 Directvr of Nuclear Reactor Regulation Attu: Mr. Brian K. Grimes, Assistant Director for Engineering and Projects U. S. Nuclear Regulatory Commission Washington, D. C.
20555
References:
(1)
W. G. Counsil letter to D. L. Ziemann and R. Keid dated February 13, 1979.
(2)
W. G. Counsil letter to D. L. Ziemann and R. Reid dated March 13, 1979.
(3)
W. G. Counsil letter to D. L. Ziemann and R. Reid dated June 29, 1979.
(4)
W. G. Counsil letter to D. L. Ziemann and R. Reid dated September 19, 1979.
(5)
W. P. Gammill Notice to All Power Reactor Licensees, dated September 17, 1979.
Gentlemen:
Millstone Nuclear Power Station, Unit Nos.1 and 2 Interim Compliance with 40CFR190 Pursuant to Reference (5), submitted herewith is Enclosure 1 which indicates the licensee's method to be used to demonstrate compliance with 40CFR190.
We wish to note that delays in receiving and processing these Technical Specif1-cations are a result of the frequent revisions of NUREG-0472 and NUREG-0473, thus, necessitating the repeated incorporation of corrections and revisions into drafts of the Radiological Effluent Technical Specifications (RETS) and Offsite Dose Calculation Manual (ODCM). This has also complicated and extended the review process.
However, we will continue to work as expeditiously as possible to reach our common goal, that of implementation of revised Radiological Technical Specifications and Offsite Dose Calculation Manual.
We would like to re-emphasize the fact that it will take at least two months to revise operating procedures and install any additional equipment necessary to implement the final approved Radiological Effluent Technical Specifications
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, and Offsite Dose Calculation Manual; and it is logistically important to make the new specifications effective at the beginning of a calendar quarter.
Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY jfl W. G. Couniil Vice President Attachment
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DOCKET NOS. 50-245 50-336 MILLSTONE NUCLEAR POWER STATION, UNIT NOS.1 AND 2 INTERIM COMPLIANCE WITH 40CFR190 1'175 112 NOVEMBER, 1979
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ATTACHMENT l_
CONFORMANCE WITH 40CFR190 MILLSTONE NUCLEAR POWER STATION 40CFR190 Limits 12 Consecutive Months - Total Dose to Real Individual Whole Body
- 25 mrem Thyroid
- 75 mrem Other Organs
- 25 mrem Demonstration of Compliance In order to ensure compliance with the above limits, during the interim period, from December 1,1979 until the proposed Radiological Effluent Technical Specifications are ity'emented, the attached calcu?.ations will be completed on a monthly basis. Calculations will be completed within 30 days from the end of the month. The first calculations will be performed for the month of December,1979 and will be completed by January 30, 1980.
The calculations given are taken directly from the proposed Offsite Dose Calculation Manual as submitted to the Commission on August 1,1979. As indicated in the ODCM, these simplified calculations are conservative, and will, therefore, ensure compliance with the limits.
Should these calculations indicate doses in excess of the limits, the more detailed, and hence, less conservative and more accurate calculational techniques as given in the ODCM will be used to validate those determined by these preliminary calculations.
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CALCULATION SHEET I.
LIQUID DOSES A.
Monthly Whole Body Dose = 1.4 x 10-2 CF + 4.9 x 10-7 CT = (1) mrem B.
Monthly Thyroid Dose
= 0.2 CF = (2) mrem C.
Monthly Organ Dose
= 0.2 CF = (3) mrem Where:
CF = Total Gross Curies of Fission and Activation Products from both Unit 1 and Unit 2, excluding Tritium and Dissolved Noble Gases, released in Liquid Effluents During the Month (See Note 1).
CT = Total Curies of Tritium released in Liquid Effluents from both Unit 1 and 2 during the month.
II.
GASEOUS DOSES A.
Monthly Whole Body Dose = 2.4 x 10 5 CN1 + 9.0 x 10-5 CN2 = (4) mrem B.
Monthly Thyroid Dose = 8.4 CII + 250 CI2 + 1.8 x 10-3 CT = (5) mrem C.
Monthly Organ Dose = 1.1 Cpl + 55 Cp2 + 1.8 x 10-3 CT = (6) mrem Where:
CN1 = Total Curies of Noble Gases Released from Unit 1 for Month.
CN2 = Total Curies of Noble Gases Released from Unit 2 for Month.
Cri = Total Curies of I-131 released from Unit 1 for Month.
CI2 = Total Curies of I-131 released from Unit 2 for Month.
CT = Total Curies of Tritium Released from both Units 1 and 2 for Month.
Cpl = Total Curies of Particulates with Half Lives Greater Than 8 Days Released from Unit 1 for Month (See Note 1).
Cp2 = Total Curies of Particulates with Half Lives Greater Than 8 Days Released from Unit 2 for Month (See Note 1).
III. DIRECT DOSE A.
Monthly Whole Body Dose = Si + S2 + M = (7) mrem 1775 114
,n Calculation Sheet Page 2 Where:
Si = Results of Skyshine Calculation for Unit 1 at Site Boundary.
S2 = Results of Skyshine Calculation for Unit 2 at Site Boundary.
M = Direct Dose from other Potential Miscellaneous Sources --
e.g., if solidified waste must be stored onsite.
IV.
TOTALS - MONTHLY Monthly Whole Body Dose = (1) + (4) + (7) = (8)
Monthly Thyroid Dose
= (2) + (5) = (9)
Monthly Organ Dose
= (3) + (6) = (10)
V.
TOTALS - DOSE SINCE DECEHBER 1,1979 Whole Body Dose = (8) + Previous Total * $_ 25 mrem Thyroid Dose
= (9) + Previous Total * $_ 75 mrem Organ Dose
= (10) + Previous Total * $_ 25 mrem
- - Total from December 1,1979 as calculated the previous month. This is only applicable through November,1980, at which point the first month should be deleted from the total each month.
Note 1 - These values do not have to include the Sr-89 or br-90 activity for the month. Strontium results are generally not available within 30 days following the end of the month. Past experience has shown that the strontium levels do not contribute a significant percent to the doses.
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION h
. j WASHINGTON, D. C. 20655 a
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RECElVED September 17, 1979 925E Udear Engineering g opera TO ALL POWER REACTOR LICENSEES Gentlemen:
The effective date for implementation of the EPA Uranium Fuel Cycle Standard, 40 CFR Part 190 for light-water reactors, is December 1,1979. By agreement.
NRC is responsib'e for the implementation of this standard for licensed power reactors. Compliance with Radiological Effluent Technical Specifications (RETS), NUREG-0472 (Rev. 2) for PWRs or NUREG-0473 (Rev. 2) for BWRs, implements the LWR provisions to meet 40 CFR Part 190. Due to the delays in receiving and processing these Technical Specifications as scheduled in the letter to you from B. Grimes, Assistant Director for Engineering and Projects, dated November 15, 1978, the Radiological Effluent Technical Specifications may not be in effect for your facility on December 1,1979.
The lack of Technical Specifications which implement the provisions of 40 CFR Part 190 does not relieve you of the responsibility to conform to the EPA standard. Therefore, you should detennine how you will demonstrate to the NRC conformance with the provisions of 40 CFR Part 190 until such time as the revised RETS are issued. A comitment to the provisions of Specification 3.11.4 of the RETS, Revision 2, as explained in Chapter 3.8 of NUREG-0133 " Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants" is an acceptable method for demonstration of conformance. This comitment or an alternative method of demonstrating compliance with 40 CFR Part 190 should be submitted to NRC no later than November 1,1979.
If you have any questions, please contact us.
Sincerely, S.[
hw William P. Gamill, Acting Assistant Director for Operating Reactor Projects Division of Operating Reactors
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