TM 5-6635-386-12&Pc. Carefully place the tester on its end or side.(See Fig. 4-2).d. Moisten the cotton swab in thedetergent/water solution.e. Swab the ring which is located on the bottomof the tester. Do not swab the source rod or the shutter.(See Fig. 4-2).f. Place the cotton swab on the sheet of plasticwrap.g. Return the tester to its upright position. (SeeFig. 4-1).Figure 4-2. Swabbing the Ringh. Loosen the four screws which are located inthe corners of the tester’s display panel. Lift the panel outof the tester and support it on the case. (See Fig. 4-3).i. With the same swab that was used in e above,swab the red spot which is located within the tester andnext to the internal radiation detector. The spot to beswabbed may not be painted red in some testers. (SeeFig. 4-3).j. Wrap just the cotton swab and an inch or twoof the stick with plastic wrap. Seal the plastic wraparound the stick with cellophane tape.Figure 4-3. Swabbing the Spotk. Reinstall the display panel in the tester andtighten the four screws.I. The swab shall be tested for radiation in anarea where background radiation averages 0.04 mrem/hror less.(1) Adjust the radiac meter AN-PDR/27 orequivalent to measure 0 to 0.5 mrem/hr.(2) Open the cover end of the radiac meter’sprobe.(3) Do not touch the swab to the meter’s probe.Place the swab about 0.25 inch in front of the probe andnote the meter reading.WARNING•A tester is contaminated when a reading of 0 Imrem/hr or more (or in the case of Colorado 0.2mrem/hr or more) is obtained from the swab.Follow the procedures provided in Para 4-31.The swab is also contaminated.•The tester shall immediately be withdrawn fromuse when the wipe test indicates a reading of 0.1mrem/hr. (or in the case of Colorado 0.2mremlhr) or when the laboratory test resultsreveal the presence of 0.005 or moremicrocuries.m. Cut off the applicator stick at the tape seal.n. If a swab reading greater than 0.4 mrem/hr4-9
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