Se 4. ADMINISTRATIVE AND LOGISTICAL MATTERS (Test Preparation, Support and Roll-up 4.1 Pre-Test Work at USNRDL 4.1.1 Washdown System Design In order to predict the probable pattern of residual contaminant efter washdown, a series of tests were conducted at NRDL to determine the effectiveness of a film of water flowing over a sure face in removing a fluorescent similant, <A manifold of spray nozzles was installed in the decontamination tank on the YFNX~-16 and aircraft sections were subjected to this water spray, These test sections were. contaminated with the fluorescent material (1) with the washdowm system turned off, and (2) with the washdowm system operating. (See Tab C-9 for details of this experiment and the results obtained.) Subsequently, in order to obtain information required for the proper design of the washdowm system around a complete aircraft, @ nozzle arrangement was set up and tested at USNRDL, A dud FAU, was procured from NAS Alameda in September 1953 and delivered to USNRDL for test purposes, Tho preliminary nozzle arrangement was set up around the aircraft and tests were run to determine the number of nozzles required and the optimum location of each nozzle, (Sec Tab C#9 for a detailed description of the equipment used, the washdowm system end available results of system tests,) 4.1.2 Equipment Tests The ACC is lending USNRDL a cleaning unit chich providcs facilities for hot liquid cleaning, steam cleaning, and pressure washing. When the cleaning unit errives at USNRDL, Team A will check it for proper performance along with othor oquipmont such as the portable pumps, Sellers units, etc, Those equipment tests will serve as a training poriod for Toam 4, ST, LOUIS FRC 4e1.3 Laboratory Investigation of Cleaning Agents Personnel of Applied Research Branch, Chemical Technology Division, USNRDL, are conducting tests to determine the relative decontamination efficiencies of a large number of cleaning materials on a semi-micro scale, Team A will determine which of these methods will be tested on fullescale air foil and cowling surfaces of tyvical Naval aircraft, These tests will form a basis for selecting the particular methods and equipment to be used in the field. results.) (See Tab C-10 for available bb