t ? s es u“ee. he, uy yoo . 1 qo beg hyeUa, 7% . oh 85 S, ty It is estimated that this tt "was reduced ‘to 43 mr/hr at 7.5 days-after shot. agi has 4 xWE hie ue ,7e “.° value will allow a 30 day trip without exceeding 3.9 r dosage for the crew. The devarture of certain Task Force ships delayed the decontami- nation of YAG 40 because the trained decontamination personnel left with ~ sya my 3 aay - them. AS soon as other personnel are obtained and trained, decontamination This decontamination will consist, in part, of the removal of special protective coatings from all topside surfaces, It is estimated oe Praha aye n z will proceed, “ety ot Si ¥ ,) te i _ that this operation will require 525 man-hours. Aircraft Studies * The aircraft were off-loaded after they had been on the YAGs less ay ya, “> than a week, + On the Able (YAG 39) aircraft the left magneto drop-off was Vad, va ade ‘" above tolerance but not excessive. was evident. Since the Baker (YAG 0) aireraft did not check out before the Shot no inspection was made afterward, e : No other damage except minor corrosion On the Able aircraft,decontamination was accomplished by use of hot liquid jet with detergent, scrubbing with detergent, and scrubbing with . Gunk, all in sequence. This treatment reduced the cockpit reading from 220 me/hr to 52 mr/hr. i Fig. 6.4-5 shows the decontamination methods and results on the Baker aircraft. Taking into account the difference in contamination levels on the patna er two ships (see Washdown) it is estimated that the washdow was 95% effective 1 RET § at 7 hours after shot. The contaminant was not visible on either aircraft. Beta radiation levels on top surfaces were 2 to 5 times those on underside surfaces. cOPlIED/DOE LANL RG ~ annnpe -46- Vertical