The examinations of seven process tubes are covered in this report. Tubas reported on are 3362-B and 0561-C. these were removed under PT-105-522-P. ``Routine Examination of Process Tubes``. Tubes 2572-C and2679-C were operating under PT-105-519-E. ``Raising Permissible Outlet Water Temperatures of Certain Tubes at C Pile``. In tube 2679-Z a rupture occurred during its operating period. These tubes (2572-C and 2679-C) were smaller diameter process tubes such as used in B, D, F, DR, and H Piles. Tube 2772-C was removed because of a suspected rupture. Tubes 3571-D and 2170-D were removed under PT-105-525-E. ``Effects of Water Quality on Pile Operation``. Visual inspection was made of the inside and outside surfaces before and after removal of the film. This work was performed in the 105-DR storage basin. Samples varying from one to four inches in length were taken from each section and transferred to the 108-B metallurgical laboratory for closer examination as regards to depth of pitting, 72-S cladding thickness, and wall thickness. The results shown in this report such as pit depth, 72-S cladding thickness and 2-S aluminum thickness are taken at specific points in each section, on what appeared to be the severest attack.

This report details the activities of the Radiation Monitoring Sub- Section of the Reactor Section during the month of August 1954.