ML20217D936

FOIA Request for Document Re Section 9.7 of SE by Directorate of Licensing,Us Ae Commission in Matter of Indiana & Michigan Electric Co & Indiana & Michigan Power Co,Dc Cook Nuclear Plan,Units 1 & 2

ML20217D936
Person / Time
Site:	Cook
Issue date:	09/30/1999
From:	Smith E External (Affiliation Not Assigned)
To:	NRC OFFICE OF ADMINISTRATION (ADM)
Shared Package
ML20217D928	List: IA-99-379, First Final Response to FOIA Request for Documents.Documents Listed in App a Being Released in Entirety ML20217D924 ML20217D936
References
FOIA-99-379 NUDOCS 9910180185
Download: ML20217D936 (3)

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[F0JA'- D.C. Cook SER'Siction e.T Pign1]

. F0M R go sat l ceaeno- W - B '19 f From: Eric Smith <esmith@NUS.COM> gg 7,y _9 9 To: FOIA Branch <fola@nrc. gov > )

Date: Tue, Sep 28,1999 2:08 PM

Subject:

D.C. Cook SER Section 9.7  % IW W C896: __.

l Sirs - , {

Pursuant to the Freedom ofInformation Act,5 USC Paragraph 552, and Nuclear Regulatory Comraission regulations, I hereby request a copy of the following document-All of Section 9.7 of the " Safety Evaluation by the Directorate of Licensing, U.S. Atomic Energy Comm!ssion in the Matter of Indiana & Michigan Electric Company and Indiana & Michigan Power Company, Donald C. Cook Nuclear Plant Units 1 and 2, Docket Nos. 50-315 and 50-316," dated September 10,1973. It appears that all available copies of this safety evaluation are missing at laast page 9-8 (there may be pages after 9-8 that are also missing). Page 9-7 ends in the~ middle of a sentence.

Thank You, Eric R. Smith Technical Analyst Licensing information Service NUS Information Services 2650 McCormick Drive, Suite 300 Clearwater, FL 33759-1049 727-669-3026 voice 727-669-3100 fax e-mail: esmith@nus.com httpJ/www.nus.com l

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9910100185 991000 PDR FOIA SMITH 99-379 PDR

10/05/99 09:td FAI 630 519 1078 U.S.NRC REGION III @ 002 9-7 9.7 Ventilation Systems _

9.7.1 Auxiliary Building Ventilation System

'Ihe auxiliary building ventilation system ccasists of the ESF ventilation system (one per unit), the fuel handling area ventilation system (one shared system), the general ventilation systen (one per unit) and.the general supply system. All ventilation systems are

- once-through systems. Supply air is introduced at the areas lasst likely to be contaminated and exhausted direct 1' y from those with the greatest potential for contamination. Additionally, the exhaust I

systems are of greater capacity than the supply thus maintaining the auxiliary building at a slightly negative pressure.

All exhaust air is directed to the unit vents (one per unit).

Each vent is equipped with radiation detectors to continuously monitor the discharged air.

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The ESF ventilation system for each unit includes two 100%-

capacity fan / filter trains and serves the containment spray pump and heat exchanger enclosures, the RER pump and heat exchanger enclosures, and the safety injection pump enclosures. Upon receipt of a Phase B isolation signal the dampers on the charcoal filter bypass auto-matica11y close, thereby directint airflow through the charcoal filters in addition to the roughing and absolute filters.

During normal operation one of two 100%-capacity fans of tt.e fuel handling area ventilation system draws air through roughing and e

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10/05/99 09:51 FAX 63o 515 1078 U.S.NRC REGIO.N III @ 003 l 9-8 l

l absolute filters and discharge it to the Unit i vent. A high radia- , j l i

• rion signal f rom the area monitors automatically trips bypass dampers thus passing. the eWmaust air, through charcoal filters as well.

We conclude that the auxiliary building ventilation system is acceptable.

, I 9.7.2 control Room Ventilation System {

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- Properly conditioned (heated or cooled) air is continuously {

delivered to the control room by either of two full-capacity air-handling trains. Each train includes a roughing filter, a chilled- l water coil, an electric coil heater and a f an. During normal operation this system pressurizes the control room by drawing in a fixed amount of air from.a fresh air . intake. In a fire or radiation-emergency, however, an isolation damper closes the intake and makeup is than provided by a special pressurization / filtration system which supplies air darough roughing, absolute and charcoal filters.

We conclude that the control room ventilation system meets the requirements of GDC 19 and is acceptable.

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