' c o l e PRIVACY ACT MATERIAL REMOVED C lL I STAFF COMN ANDER JTF-1 USS HAVEN AH-12 c o Fleet Post Office San Francisco California 9 August 1946 From To •• Subject Officer-in-Charge of Target Ship Monitors Chief Radiological Safety Section itoring Problems 1 s report is to point out that work on target ships has inc eased to the point that it is impossible to provide adeq te protection for the personnel involved in this work T s section has put into use every available monitor and a l equipment The large nmnber of personnel to be protected when working in ships with radiation above tolorance has required the monitors and equipment be so widely scattered that proper protection and adequate control are not poss le 2 For of six monitors at present assigned to monitor the USS Salt Lake City have been over exposed as shown by their fi badge reports Film badges worn by monitors of this ships working teams also show over exposure The monitors con erned were questioned and below is the sunnnary of their rep rt 3 A ust not ships co 4 Au ust 2 badges l visitor «w'AU - ' PRIVACY ACT MATERIAL REMOVED 5 AUffil ' t Cont' d Monitor Visitor 6 August 7A Visitor 3 Monitors report that originaly four monitors were assigned the USS Salt Lake City monitoring detail The senior monitor requested two addit1ona1 men which were supplied It was the opinion of the senior monitor at that time that six monitors could adequately provide radiological information necessary to protect crews who were working in three two hour shifts a day Two monitors were assigned to each shift and survey were conducted in a daily fashion to provide necessary information as to tolorence time in various parts of the ship in order that decontamination work could proceed This system was in operation for five days Three days aio monitors were asked concerning increasing the working period After discussion between the six monitors it was believed that a two hour working period would be safe This information was transmitted to the c o and passed to DSM in Vharton by dispatch The following morningt without consulting the monitors further t ie working perioa was extended to three hours per shifts and two shifts a day were started The monitors have have had - e an average of 15 film badges per day The average number of men per day aboard the ship has been approximately 100 men these men being divided into working parties going into various parts of the ship The monitors are of the opinion that the officers and petty o f ficers have used every means to enforce safety precautions but have been handicaped in adequate control by the long working period and the relative large number of' men under their aupervision There has been a maximum of 6 dosimeters in monitoring detail These have been checked carefully by the monitors with rare exceptions have remained below the O l r for each working period Beginning tomorrow the CO expects to use 300 men per day This case is reported in detail as an example of the type of condition mentioned in paragraph one Radiological personnel and equipment are inadequate for the job conducted on this scale The over exposure of monitors and the removal from work in addition the opening of more ships will soon make it impossible to provide even the inadequate protection that is being given at present · u W O _ -wi11iam J Vfulfm yi v-· Lieut Cmdr O m U S µ '