followings: mechanical operating charactoristics of instrument; durability and ease of maintenance; linearity over single rengcs and between ranges; tomperature and humidity dependence; gamma ficld dependence-discrimination egeinet gemmas of various encrgics and intensities; goometry of tho probe, (Sec Teb D-13 for deteils of testing program.) 41.2 Reliability of Measuring Bete Radiation in the Field A series of laboratory tests will be conducted to determine whethor beta readings may be correlatec to directional gamma reedings, A series of test penels made of "shipboard" surfaces will be contaminated with mixed fission products, Porous and non-porous surfeccs will be used as vell es samples with crevices, The contaminetion will be mixed with various salt concentrations of sea water to obtain various amounts of salt incrustation on the test panols, The ratio of bota to gamma readings will be determined for each of the test pencls,. The directional bcota probe will be used for measuring the bota radiation, (Soe Tab D-14 for dct2ils of the testing program.) 4.1.3 Wipe Sarpling Techniques The newly designed tipe sampler will be tested to determine its efficiency on verious surfaces. A standardized procedure will be esteblished for wipe sampling which will include the proper use of the sampler, placement of filter prper wipe semples into bags, and reading the wipe samples with a laborntory typo sceler and rate meter, 4eie4 Tochnical Photogra Developmental tests will be conducted to detcrmine tho best film to use in the 16 mm shielded cemera, the bost lighting technique to use ond the best target or background to use to detect the fall~ out on Transit BAKER, The present camere and synchronizer will be check-= ed for smoothness of operetion and resolving power of tho optical system, (Tab D-15 includes test details.) 4.1.5 Training of Enlisted Personnel for Rediological Survey Moni . urvey_ Monitors ST. LQUIS aC If possible, the enlisted personnel from the 6.4 ship assigned as rediologicnl survey monitors will be given treining at USNRDL or ct the Damage Control School, T. 1I., before leaving for the test site, (Seo Tab D-10 for Training Progren.)