Gas Blocked Cables - A New Approach.
Abstract
Cables which are capable of preventing gases passing through them in an axial direction have many applications in both industrial and nuclear environments. Typically, a cable includes a strength member, several optical elements and a single or double sheath; gas permeation being prevented by a stable filling compounds, often elastomers, incorporated into the interstices. A new type of gas block construction is described whose simplicity allows it to be made in a single operation. Three basic elements are incorporated, a glass-reinforced plastic strength member, a multiplicity of fibre waveguides and a combined thermoplastic sheath and gas block. Since all elements are extruded directly into the sheath, the need for filling compounds is eliminated. A loose tube version for use where 'time of flight' constraints apply is also described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1986
- Accession Number
- ADP005231
Entities
People
- D. L. Walters
- M. M. Ramsay
- P. A. Jones
- R. Sutehall
- S. R. Barnes