A study of the incorporation of {sup 14}CO{sub 2} into cell components of synchronously growing Chlorella pyrenoidosa has shown that DNA is synthesized primarily during the latter stages of the cell cycle prior to cell division. RNA was synthesized at an approximately equal rate during each of the three phases of the cell growth studied. No major differences were noted in the incorporation of {sup 14}CO{sub 2} into the soluble cell components in these long-term incorporation studies.

Because of the questionable performance of the 190-DR steam backup system during the power outage of April 6, 1962, it is felt that a general review of the DR secondary water system capabilities and the standby status of the pumping units is warranted. This report shall briefly describe the performance of the steam backup system during the April 6 power outage and the subsequent power outage of July 10, 1962. Since the former outage, tests have been conducted on the steam pump units to determine their capabilities; the test results are presented in this report. A statement of the generally accepted criteria for secondary coolant system adequacy is included and recommendations for meeting the criteria at DR reactor are presented.

This report covers the efforts of the Laboratory in an investigation of the graphite distortion in the ``C`` reactor at Hanford. The particular aspects of the problem to be covered by the Laboratory were possible ``fixes`` to the control rod sticking problem caused by VSR channel distortion.

Preliminary data have been obtained on the effect of temperature on the tensile properties of a Pu-0.9 w/o Ga delta stabilized alloy. Contoured castings for tensile specimen fabrication were obtained by pouring in vacuo from 900 {degrees}C into a MgO coated graphite mold heated to 475-500 {degrees}C.

The purpose of this report is to describe the results of prototypic tests of piping alterations designed to alleviate the above described conditions and to outline a program for full-scale implementation of these alterations.

The purpose of this document is to provide a tabulation of data concerning ruptured slugs for the use of various interested parties. This report presents data for the ruptures that occurred from January 1, 1962, through April 30, 1962, inclusive. Definitions of the terms used in the tabulations are nearly self-explanatory and are documented in the reference document. The possible exceptions to this are the three terms: type of metal, type of failure, and lot number. The legends currently in effect for these three terms are provided in this report.

Subsurface contour maps were prepared from a seismic reflection survey. (JSR)

This document details activities of the Fuels Preparation Department during the month of September 1962. (FI)