ML12100A075

Reed College, Proposed Changes to Technical Specifications 3.4

ML12100A075
Person / Time
Site:	Reed College
Issue date:	03/26/2012
From:	Krahenbuhl M Reed College
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML12100A075 (2)

Text

M REED COLLEGE REACTOR FACI LITY 3203 Southeast Woodstock Boulevard March 26, 2012 Portland, Oregon 97202-8199 telephone Document Control Desk 503/777-7222 U.S. Nuclear Regulatory Commission fax Washington, DC 20555-0001 503/777-7274 Docket: 50-288 email License No: R-112 eeactoer@eed.edu RE: Technical specifications web http://reactor.reed.edu Upon further review, we are proposing that Technical Specification 3.4 be changed to clarify the operating modes of the Reed Research Reactor ventilation system. We propose the following:

3.¥ F

Ventilation System vplicabi/ib* ThLis speci/cation applies to the operation ofthe reactor bay ventilation system.

Ob/ective. The objective is to ensure that the ventilation system shall be in operation to mitigate the consequences ofpossible releases ofradioactive materials resulting/from reactor operation or when moving irradiatedfuel Specifications. The reactor shall not be operated nor irradiatedfuel moved unless thefaedi/iv ventilation system is operable in one ofthefollo wing modes.

a. Normal mode." The exhaust, supply and control room fans are operating. The reactor bay pressure is maintained negative with respect to the control room.

b. Isolation mode." Isolation mode is initiated by high radiation readings on the continuous air monitor. The exhaust and control room fans are operating. The reactor bay pressure is maintained negative with respect to the control room and all exhaust is diverted through a HEPA jilter.

Basis. During normal operation ofthe ventilation system, the annual average ground concentration of dr-41 in unrestricted areas is well below the applicable effluent concentration limit in 10 CFR 20 (SAR/i/.Z 1). 4nalysis ofthe k/HA indicated that the release of effluent to the site boundary is below the 10 CFR 20 limit (Rtl4Response, Afay 20, 2011). In thepast, the reactor has been operated Ki q-(L

with the ventilation system in isolation mode as necessary to locate a leal'ngfuel element The HEPA/ilter effectively minimzesparticulate effluents. SAR 9. I provides a detailed description ofthe ventilation system normal and isolation modes.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on;",1,*,,'t1 Z7 zL/ Z_

Meli da-P. Krahenbuhl, Ph.D.

Director, Reed Research Reactor.