Accession Number : AD0656076

Title :   DIFFUSION OF GASES THROUGH POLYETHYLENE CABLE JACKETS,

Corporate Author : WHITNEY BLAKE CO NEW HAVEN CONN

Personal Author(s) : Alm,Christian A. ; Hillman,Robert C.

Report Date : NOV 1962

Pagination or Media Count : 13

Abstract : A demand for shipment of pressurized polyethylene jacketed cables is expected to continue and probably increase. Such pressurizing offers the customer insurance against jacket defects prior to installation assuming temperature/time conditions are such that a positive pressure can be measured at the destination. A method for estimating the rate of pressure drop in pressurized cables is presented in this paper. The method is verified by experimental measurements. Gas diffusion and temperature variations can result in complete loss of pressure in pressurized cable; and therefore even complete loss of pressure is not a positive indication of jacket defects. In such cases it may be necessary to re-pressurize and measure the rate of pressure drop to check for jacket defects. (Author)

Descriptors :   (*POLYETHYLENE PLASTICS, PERMEABILITY), (*PLASTIC COATINGS, POLYETHYLENE PLASTICS), DIFFUSION, GASES, PRESSURE

Subject Categories : Electrical and Electronic Equipment
      Coatings, Colorants and Finishes
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE