ML20002C933
| ML20002C933 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 06/22/1977 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20002C934 | List: |
| References | |
| NUDOCS 8101120471 | |
| Download: ML20002C933 (2) | |
Text
..
4>,
~
O UNITED f.TATES C
p A
3'
' 'A NUCLEAR REGULATORY COMMISSION
{
M)h WASHINGTON, D. C. 20665 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO.13 TO FACILITY OPERATING LICENSE NO, DPR-6 CONSUMERS POWER COMPANY BIG ROCK POINT T
DOCKET NO. 50-155 INTRODUCTION By letter dated May 25, 1977, and supplement thereto dated June 14, 1977, Consumers Power Company (CPCo) proposed to modify the liquid radioactive waste collection system and change the Technical Specifications to delete references to the components removed from the system (Hazards Sumary Report, 11/14/61 Dwgs M-108 and M-132). The proposed modi-fication consists of replacing the radwaste concentrator, feedpump, condenser and associated piping and instrumentation by two cartridge filter units.
DISCUSSIO1 AND EVALUATION According to CPCo, the modification is required by July 1,1977, to meet the requirements of the Federal Water Pollution Control Act of 1972 as applied by the State of Michigan in issuing National Pollutent Discharge Elimination System (NPDES) pennits.
CPCo has concluded that the modification will result in lowered suspended solids discharge levels, i.e. less than the permit limits of 30 mg/ liter daily average and 100 mg/ liter daily maximum, and further reduced liquid waste radiontivity levels.
The new filter assemblies will be monitored and alarmed to assure proper operation of the system for removing suspended solids from liquid waste that is returned to Lake Michigan.
Based on Big Rock Point operating exnerience where liquid waste radioactivity levels have been low, it 4 expected that the radiation levels at the new equipment will be sufficiently low to permit servicing.
E 1C ] ; L LN
s
. CPCo has reported that the radwaste concentrator that they have proposed to remove has not been used for several years because it has never operated properly. Further, even if the concentrator were working properly, the total man-rem / year reduction would be 0.35.
We have reviewed the information provided by CPCo(I) and have concluded that the proposed system modifications and changes to the Technical Specifications should be made.
ENVIRONMENTAL CONSIDERATION We have determined that the amendment does not authorire a change in effluent types or total amounts nor an increase in power level and will not result in any significant environmental impact. Having made th's detennination, we have further concluded that the amendment involves an action which is insignificant from the standpoint of environmental impact and pursuant-to 10 CFR !i51.5(d)(4) that an environmental impact statement or negative declaration and environmental impact appraisal need not be prepared in connection with the issuance of this amendment.
CONCLUSIONS We have concluded, based on the considerations discussed above, that:
(1) because the amenda.ent does not involve a significant increase in the probability or consequences of accidents previously considered and does not involve a significant decrease in a safety margin, the amendment does not involve a significant hazards consideration, (2) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, and (3) such activities will be conducted in compliance with the Comission's regulations and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public.
Date: June 22, 1977 (I) Additional information - Hazards Sumary Report (November 14,1961),
Section 9.2.3.1, 9.2.3.3 and 9.2.5.2.
9