ML19210A478
| ML19210A478 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/22/1977 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Herbein J METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7910300514 | |
| Download: ML19210A478 (3) | |
Text
DISTRIBUTION:
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Docket No.: 50-289 OELD OI&E (3)
DEisenhut Metropolitan Edison Company TBAbernathy ATTN: Mr. J. Herbein JRBuchanan Vice President ACRS 0 6)
P. O. Box E42 hmes Reading Pennsylvania 19603 Gentlemen:
% kEX c.. tAtu Wars By letter dated October 29,1976, you submitted a report entitled,
" Development of Cooling Water Chlorination Practices at the Three Mile Island Nuclear Station" (report dated February 27,1976).
This report was submitted to satisfy the requirement in Section 2.2.1 of Appendix B of the Three Mile Island Unit No.1 (TNI-1)
Technical Specifications, that testing be performed to assure that a concentration limit of 1 ppm total residual chlorine in the cooling tower blowdown flow would not result in a chlorine concentration in excess of 0.01 ppe in the discharge to the river.
t, This is to advise you that we have reviewed your submittal and on the basis of our review have concluded that the test results do not conclusively show that a 1 ppm limit on chlorine concentration in the blowdown f;ow would always result in chlorine concentrations less than 0.01 ppm in the discharge to the river. First, there are not sufficient data in Table 11 of the report with a maximum total residual chlorine concentration in the system of 1 ppm or greater to justify your conclusions. Second, all of the pertinent data points were obtained during a time of the year when the chlorine demand is high, hence the likelihood of seasuring a chlorine residual at the discharge is small.
During other times in the yea.', or during other days in the sunner, when the chlorine demand may be lower, a 1 ppm total residual in the system may lead to higher than 0.01 ppm total residual in the discharge.
However, the provisions of Specifications 2.2.1.c and 2.2.1.a of the current Technical Specifications limit chlorine at the discharge and are adequate to protect the environment with respect to chlorine impact as they are consistent with the conclusions of the Final Environmental Statement. Therefore, we conclude that, although a definitive correlation bstween blowdown and discharge chlorine has not been derived, no new limits or additional programs are requin!d with regard to this correlation.,
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w' Petrcpolitan Edison Conpany If additional tests are perfomed in the future to detemine whether or not less chlorination is feasible, we would appreciate being infonned of the results.
Sincerely, Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors cc: See next page.
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Metropolitan Edison Company cc:
G. F. Trowbridge, Esquire Shaw, Pittman, Potts & Trowbridge 1800 M Street, N. W.
Washington, D. C.
20036 GPU Service Corporation Richard W. Heward, Project Manager Thomas M. Crimmins, Jr., Safety and Licensing Manager 260 Cherry Hill Road Parsippany, New Jersey 07054 Pennsylvania Electric Company Mr. R. W. Conrad Vice President, Generation 1001 Broad Street Johnstown, Pennsylvania 15907 Mr. Weldon B. Arehart, Chairman Board of Supervisors of Londonderry Township RFDdl, Geyers Churen Road Middletown, Pennsylvania 17057 Miss Mary V. Southard, Chairman Citizens for a Safe Environment P. O. Box 405 Harrisburg, Pennsylvania 17108 Government Publications Section State Library of Pennsylvania Box 1601 (Education Building)
Harrisburg, Pennsylvania 17126 1491 080 e