ML20128C645

Responds to 720718 Memo Re Comments on Des.Turbine Bldg Exhaust from Lower Turbine & Condenser Space Released Through Reactor Bldg Vent Stack Which Is Monitored for Radioactivity

ML20128C645
Person / Time
Site:	Monticello
Issue date:	07/25/1972
From:	Ziemann D US ATOMIC ENERGY COMMISSION (AEC)
To:	Youngblood B US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 9212040497
Download: ML20128C645 (2)

Text

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ENV[DR. "" ~ " 7M fpA JUL 2 51972 Iw c t !;o 50 203 B. J. Youngblood, Chief ,

Environmental Projects Branch #3 '

Directorate of Licensing MONTICELIA NUCLEAR GDiERATING PLANT . NORTHERN STATES POWER COMPANT Cor2!ENTS ON DRAFT E!NIR0!C' INTAL STATEMENT

, ( o; This is in response to your memorandum on the above subject dated ..

July 18 1972. During a telecon with A. Ward L. Heyer. and J. Ecchtel on July 20 1971 these Northern States Power Company (NSPCo) repre-sentatives stated that.

1. NSPCo has submitted written comments, dated July 3 1972, in response to the AEC Draft Environmental Impact State-ment, published in June noting that I-131 releases are unrealistically high and that_tho AEC calculational method is not consistent with the nethod employed in Pilgrit.

Millstone and other BWns.

2 Tric turbine building exhaunt irom the lower turbine and condenscr space is released through the reactor-building vent stack which is monitored for radioactivity.

3 During 8 months of the year, when the twelve roof vente are normally closed. ventilation in the. turbine building exuausts to the. lower turbine and condenser room and out through the monitored reactor building vent stack

4. Turbine building ventilation exhausts through the 12 turbine building roof vents for about 4 months.of the year. With the exception of turbine steam reheaters- ye on the turbine floor, there are no sources of-radio-activity during normal operation or anticipated transients.?

Nevertheless, there are-radiation alarms in the turbine building.

9212040497 720725 PDR ADOCK 05000263 D PDR ,

1 B. J. Youngblood - 2 JUL 2 51972

5. Tne exhaust from the recombiner building ventilation

! system is used as diluent at the main gas effluent stack

• and, therefore, is seasured with the radioactivity from the air ejector exhaust by the stack radiation monitor.

4 Please advise if we can be of further assistance.

1 I

i Dennis L. Zienann Chief Operating heactors Branch (2

Directorcte of Liccunin; j .

i I

4 Distribution

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