Petroleum and natural gas industries. External coatings for buried or submerged pipelines used in pipeline transportation systems - Polyolefin coatings (3-layer PE and 3-layer PP)What is this standard about? This document specifies requirements for plant applied external three layer polyethylene and polypropylene based coatings for corrosion protection of welded and seamless steel pipes for pipeline transportation systems in the petroleum and natural gas industries in accordance with ISO 13623. NOTE Pipes coated in accordance with this document are considered suitable for further protection by means of cathodic protection.

operators and their surroundings

12-strand braided ropes and covered ropes

as far as possible

and Section 9 contains specific rules for masonry structures

BS EN 13431:2004 amplifies these requirements with respect to energy recovery

and terms relating to health and safety for welding and related processes

Grade E drill-pipe

BS 8519:2010 supersedes BS 7346-6:2005

The document includes the universal symbols required for use on electrical equipment

Immunity test requirements

foundations and a quality system plan

BS EN 15565:2008 specifies minimum requirements for the provision of professional tourist guide training and qualification programmes