VOL, Ii BOOK 4 CHAPTER I SECTIONS6 - 8 The major problem of maintaining the electrical distribution system was that occasioned by corrosion. All lines, switches, insulators and transformers were checked on a regular schedule and corrective measures taken as required. A high pressure washing machine was acquired for use in washing insulators without the necessity for an outage of power. SECTION 7. MISCELLANEOUS EQUIPMENT There were maintained 46 type SCR-508 radio sets, 43 type SCR-300 radio sets, 3 type TCS-12 radio sets, a six-station RCA intercom system, a sixstation Stromberg-Carlson interphone system and a public address system. These required routine maintenance and the only problem encountered was the lack of parts. To keep these units operative, considerable cannibalizing of old sets was required. Over 1,000 pieces of refrigeration equipment were in use at the Jobsite. A regular maintenance crew provided the necessary service to keep these in good operating condition. Portable generators, electrical motors, palley, laundry and shop equipment were periodically checked and serviced. All painting was performed under the direction of the paint foreman. blasting, spray or brush painting were used as appropriate. SECTION 8. Sand- SCIENTIFIC STATIONS Maintenance work required on Scientific Stations under this Contract was confined to the "mothballing" and preservation of GREENHOUSE Stations. The maintenance work required was completed early in 1952 and covered such work as the sandblasting of exposed metal of castings to remove rust. All exposed metal was then covered with a protective coating of bitumastic or cosmoline. Holes leading into the interior of the base castings were plugged. A total of 1045 man hours were expended on this maintenance work, and the total cost, including labor and material, was $10, 670. 4-13