%MurNBcontrolrods032353; ]> Memorandum from Newton Underwood to Clifford Beck Machine readable transcription Underwood, Newton 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, MurNBcontrolrods032353

Available from: NC State University Archives

Publicly-accessible

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

 10 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. Memorandum from Newton Underwood to Clifford Beck Newton Underwood

1 p. Manuscript copy consulted UA 105.16

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

The lineation of the manuscript has been maintained and all end-of-line hyphens have been preserved.

Keywords in the header are a local Science and Technology Electronic Text Center scheme to aid in establishing analytical groupings.

Library of Congress Subject Headings March 21, 1953 English LCSH manuscript 24-bit color: 400 dpi Memorandum from Newton Underwood to Clifford Beck Typescript 1 p. March 21, 1953 MurNBcontrolrods032353

March 21, 1953 To Clifford Beck From N Underwood Copies to Reactor Committee Subject.- Tightness of control rods in sheaths.

A spring balance was used to obtain the following data. Rod 1 grams to move Rod 2 grams to move110010001100140010001450100014001050100010001500160011001550

The different readings were obtatned at different angualar positions In order to obtain a quick relaase from the magnets, it is necessary to use the minimum current that will do the job. It is evident that a frictional force which may be as great as 50 percent of the weight needs to be reduced. Also, the shock absorbers are supposed to furnish the necessary air cushioning over the last inch of travel consequently air cushioning in the sheaths is undesirable.