Polyethylene (PE) gaspipe materials have attained in recent years a level of sophistication, in both structure and properties, which reinforces their potential for safe and extensive long-term service in the gas distribution system. The successful application of polyethylene in the UK remains dependent upon the short and long term integrity of joints made under extreme field conditions. The design of joints and the development of assembly procedures should therefore receive as much attention as the formulation of basic polymer compounds. Since the introduction of PE systems in 1969, British Gas has been involved in work aimed at the consolidation and simplification of joint design and construction practices for effective use in the field. This paper reviews developments in heated tool fusion jointing, fusion fittings with integral heating elements, and end-load resistant mechanical joints. Quality control of field construction is also discussed. Considerable attention has been given to the provision of operator training aids and visual quality control procedures. The suitability of ultrasonics for the nondestructive examination of joints has also been evaluated.
Polyethylene gas pipe systems: An appraisal of joint design and construction methods
Polyaethylen-Gasleitungssysteme: Eine Abschaetzung der Entwurfs- und Konstruktionsmethoden fuer die Rohrverbindungen
Seventh Plastic Fuel Gas Pipe Symp. American Gas Ass. ; Nov ; 25-31
1980
7 Seiten, 20 Bilder, 2 Tabellen, 7 Quellen
Aufsatz (Konferenz)
Englisch
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