ML18219D511

Letter Enclosed as Attachment a Is an Update of Section III D.3.C. of the Final Environmental Statement

ML18219D511
Person / Time
Site:	Cook
Issue date:	05/27/1977
From:	Tillinghast J Indiana Michigan Power Co, (Formerly Indiana & Michigan Power Co)
To:	Case E Office of Nuclear Reactor Regulation
References
Download: ML18219D511 (8)

Text

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i ENCLOSURE ATTACMENT A-UPDATE OF SECTION III D.3.C.

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INDIANA tr MICHIGAN POWER COMPANY P. O. BOX 18 BOWLING GREEN STATION NEW YORK, N. Y. 10004 Ro~latory Fjte.CQt Donald C. Cook Nuclear Plant Unit Nos.

162 Doc'ket Nos.

50-315 and 50-316 DPR No.

58 and CPPR No.

61 Mr. Edson G. Case, Acting Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.

20555 May 27, 1977 q

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Dear Mr. Case:

Enclosed as Attachment A is an update of Section III D.3.C.

of the Final Environmental Statement for Donald C. Cook Nuclear plant prepared in response to a request from Mr. George W. Knighton, Chief of Environmental projects Branch 1 at the Nuclear Regulatory Commission in his letter dated May 10, 1977.

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Very truly yours, n

ing a Vice Presiden JT:mam Enclosure Sworn and subscribed to before me the <7 day of May, 1977 in New York County, New York Notary Public ~~~

NQTAIIY SLIC, State ol New York Noi 41-4606792 Qualified in Queens County teyrtificate tiled in New York County'ornnrnerorr cxprrea nr(arch 30, 19'Pp cc:

see next page 771550107 ~

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. E. G. Case May 7,

1977 CC G. Charnoff R. C. Callen P.

W. Ste'ketee R. J. Vollen R. Walsh R.

W. Jurgensen Bridgman R. S., Hunter

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Attachment A

The majority of material contained in Section 1II D.3.C, is correct and is.upda ed by the addition of the follow' ing paragraphs:

During regeneration of the water treating plant demineralizers, a maximum of 31;000 gallons of regenerant wastes is directed to the turbine room sump.

The suD'.p is pumped down as lov as possible prior to a demineralizer regeneration.

Since the turbine room sump has a maximum capacity, of 110,000 gallons, there is. sufficient reserve'apac'ity avail-able to neutralize the sump contents prior to'xceeding the sump capacity Xf, during a now unforseen circumstance, the

. level in the Turbine Room Sump:approaches the sump oyeZf;low

...-... before, the:-contents

'of the sump are within the proper pH limits, action would be immediately taken to start a

sump pump(s).

If

'his-action were not taken, the water would overflow to the circulating water system and be pumped to Lake l4ichigan.

Pumping out>>of-specification (pH) sump water to the absorption field (or pond.) is more environmentallg acceptable than -allowing it to overflow to Lake Michigan.

In the absorp-tion field, the out of specification ;.ater will mix with approximately 2,000,000 gallons of near neutral water (pH

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between

$.0 and 7.g) and will eventually be neutralized by the time it percolates through the bottom sediment of the

'bsorption pond and enters the ground water that eventually flows into Lake Viichigan.

Due.to this neutralizing phenomenon and the infrequency at which out-of-specification (pH) water has to

. be pumped to the absorption pond, the effect on the environment will be negligible.