Frank Cluff, Bafety Advisory Group, NV DISPOSAL OF SCRAP MATERIAL AT RIKINI ATOLL In response to your request for consideration of proper disposal of contaminated scrap material for the Bikini cleanup operation, the following guidance is provided: Background - Past radiological surveys and particularly the 1967 survey identified a mueaber of locetions among the islands of Bikini Atoll having quantities of scrap material containing induced redioactivity. Such scrap locations are described in the Health and Safety Laboratory report HASL-190 entitled, “External Rediation Levels on Bikini Atoll - May, 1967,” dated December, 1967. ‘These locations, which are on islands near former testing sites, may be identified as: (a) the Acasen-Iroij Complex in the north-central part of the atoll, (bd) the island of Nam and the blasted bunker just west of Nam and Bravo Crater in the northwest part of the atoll, and (c) an area generally defined as the island of Enidrik and the western portion of the Aerokoj~Eneman Craplex in the south central part of the atoll. Also, the possibility cannot be ruled out that there may be some conteminated scrap on Bikini Island, as increased levels of radiation were observed there on a cable spool end only a small fraction of the area was checked due to dense vegetation. Additionally, there are three test facility locations in shallow weter on the reef between the Aomen-Iroij Complex and Nam which vere not monitored during the "67 survey and which should be checked for contaminated scrap. The Ad Hoc Committee established by AEC to ewaluate the radiological Bazerds of resettlement of the Bikini Atoll recommended a number of measures one of which was that "Radioactive scrap should be removed from the islands adjacent to former shot sites.“ | 1 | : | | and find use for all such materials. The scrap is in the form of metal embedded in concrete, chunks of metal lying on top of the ground surface, and scraps of metal mixed with the top layers of sand and soil. It ie not expected that removal of the scrap containing induced radio- activity willmake any great reduction in radiation levels on the near eet islands since there are quantities of radionuclides, primarily Co and 137cg, in the top layers of sand and soil of these islands. Drog-72328- | CONFIRMED TO BE UNCLASSIFIED aeaa | In discussions on the need for such removal it was pointed out thet this material is scrap metal containing induced radioactivity and that natives collect AUTHORITY: DOE/SA-20 Posts 3934 AeiP