‘. . e- ;’April -5- Mr. Roger Ray VEN:VLR:cd Enclosure H. McCammon R. Watters Division of Biomedical and Environmenti~lResearch Department of Energy 20545 Washington, D.C. cc: . ;“:ye---’-= 4 T: McCraw Division of Operational Safety ‘Departmnt of Energy 20545 Washington, D.C. E. Morimoto R. Ragaini . .t.. .. . — .. 24, 1978