All submarine cable shall be tested immediately upon completion of this exereise and every two months thereafter. Procedure established in SANDSTONE experiments shall be followed, and records of these tests shall be submitted to AEC upon completion of each test. All radio equipment which will not be used after the present exercises shall be removed from experimental islands and marine craft, cleaned, boxed, and placed in dehumidified storage. Motion picture projectors, loudspeakers, intercommnication sets, and public address systems that will not be used during the inactive period shall be handled in the same manner. ce. POWER AND WATER PRODUCTION The equipment in the power plants at both Eniwetok and Parry will continue in operation and will be maintained as required. At Japtan and at the experimental islands, where it is intended that power equipment will remain in place at the conclusion of the present operating period, the equipment shall be carefully inspected and any necessary repairs shall be made. A program of periodic operation, preferably on a weekly basis, shall then be set up. It is deemed more economical to follow this practice than to attempt to effect "cocooning" for long time storage. In the recommended periodic maintenance operations, crews shall be sent to Japtan, Runit, Rojoa, and Engebil each week to start up the engine-generator units, keep them running a sufficient period to insure that they are thoroughly dried out, and then shut them down again until the ensuing weekly run. For this operation, the electrical switch gear shall be maintained in such condition that it can be operated on very short notice. Supplementary equipment for the engine-generator units, such as air compressors for starting, pumps for water circulation, etc., shall also be operated and thus maintained in operable condition. It is recommended that the distillation equipment on Japtan, Runit, Rojoa, and Engebi be shut down and that all moving parts be thoroughly cleaned. Heat exchangers shall be dismantled and the tubes cleaned and reassembled. Any tubes which are damaged shall be replaced. This equipment will not be operated until it is again required to distill water. However, the motors and compressors will be operated on a weekly schedule as are the other units in the power plant. An application of paint or rust preventive shall be given to all exposed metal surfaces, The butterfly valves on the ventilators shall also be operated weekly. Portable diesel engine-generator sets and portable distillation units shall be transported to Parry, thoroughly checked, cleaned, and repaired. All exposed metal surfaces shall be painted or treated with rust preventive. The units shall then be stored under cover. 18-16