Letter from Clifford Beck to Mr. Joe Lundholm

%MurNBrecirculating121654; ]> Letter from Clifford Beck to Mr. Joe Lundholm Machine readable transcription Beck, Clifford Creation of machine-readable version: Russell S. Koonts Creation of digital images: Russell S. Koonts Conversion to TEI.2-conformant markup: Russell S. Koonts ca. 9 kilobytes NCSU Libraries Raleigh, NC Modern English, MurNBrecirculating121654

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URL: http://www.lib.ncsu.edu/archives/etext/engineering/reactor/murray/

18 November, 2000

Nuclear Reactor Digitization Project

Raymond L. Murray Reactor Project Notebook

Illustrations have been included from the print version. Scanned by Russell Koonts with Photoshop 5.0 software. Letter from Clifford Beck to Mr. Joe Lundholm Clifford Beck

1 p. Manuscript copy consulted UA 105.16

Prepared for the North Carolina State University Science and Technology Electronic Text Center

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Library of Congress Subject Headings December 16, 1954 English LCSH manuscript 24-bit color: 400 dpi Letter from Clifford Beck to Mr. Joe Lundholm Typescript 1 p. December 16, 1954 MurNBrecirculating121654

Murray December 16, 1954 Mr. Joe Lundholm Physics Department Campus Dear Joe,

For several months we have had no intentional inleakage or outflow of gas from our recirculating system. During this period the negative pressure in this system, as indicated on the console meter, has remained steady at minus 20 inches of water, despite considerable changes in temperature and other conditions of operation.

I feel some insecurity in this situation. Perhaps, however, it is perfectly satisfactory and as it should be.

Nevertheless, it might be advisable to check a few points which come to mind. 1) Should changes in temperature of core and catalyst (and recirculating gas volume) cause change in pressure? 2) Can we use the manometers on the panel board and check the pressure indicated on the dial. 3) Can we introduce (or remove) a known quantity of gas to the system to determine the quantity needed to give changes in dial reading; i.e. the sensitivity.

Basically, what we need to know is whether or not the gas volume really has remained constant; whether there may have been inleakage (or other accumulation) not indicated by the meter, and how sensitive the meter is to changes which might occur.

Perhaps Mr. Bjorkland might want to help you with this problem.

Sincerely yours, CKB Clifford Beck CB:nk cc: Dr. Murray Dr. Menius