ELECTROFORMED CONDUCTOR FOR TELEPHONE DROP WIRE 1103 



if required, and distributes it down the electrical bays by means of 

 overhead ducts. The system operates under modulating temperature 

 control with 100 per cent fresh air make-up. After reaching the first 

 floor, the air then flows upward through the center section of the build- 

 ing, past the plating machines and is exhausted through the roof by 

 fans at the rate of 160,000 cubic feet per minute. 



Power for the building is supplied from a substation located in the 

 south electrical bay. A pair of underground cables bring in energy at 

 13,200 volts to high-voltage switches for distribution to two identical, 

 1500 kva, three-phase transformers where it is stepped down to 480 volts 

 before entering low voltage switch gear for distribution about the build- 

 ing. The electrical system is designed so that the entire plant load can 

 be supplied by either of the high-voltage cables and for a short period of 

 time by either of the step-down transformers. Steam, city water and 

 house water are furnished through an underground tunnel. 



In addition to electric power, the building is furnished with 150 Ib./sq. 

 in. steam for process and heating, 90 Ib./sq. in. compressed air for con- 

 trol instruments and various process functions, city water and house 

 water. A sanitary sewer for the washrooms plus separate acid and alkali 

 sewers of chemical resistant pipe have been provided from the pits where 

 the electrolyte storage tanks are located. These latter sewers are for 

 emergency use only. All solutions are reconditioned and recirculated in 

 normal operation and as the plating solutions are permanent no disposal 

 plant has been deemed necessary. 



Lighting throughout the plant is furnished by incandescent lamps in 

 simple porcelain reflectors, designed to give a minimum of 17 foot candles 

 at all locations. This is supplemented by fluorescent fixtures at the 

 take-up stands because experience has shown that appearance of the 

 wire on the take-up reels is an important indication of the quality of the 

 plate. The entire interior of the plant, as well as all machinery, is finished 

 with \dnyl base paint. Extensive tests were made of various types of 

 chemical resistant finishes and the vinyls were found to be the outstand- 

 ing performers. 



For moderate service conditions, metal surfaces were wire brushed and 

 washed down with cleaning solution before the wash type primer was 

 applied. For severe service, the surfaces were cleaned by sand blasting 

 before priming. The customary primer coat was then applied and several 

 top coats, the number depending upon the severity of the service. 



WIRE HANDLING EQUIPMENT 



Tonnage-wise the steel core wire is the largest, if not also the most 

 important, single item of raw material procurement. In searching the 



