Metallic industrial piping - Part 6: Additional requirements for buried piping

Fixed installations for railway applications - Safety of electric traction power supply systems - Part 2: Generic approach for non-conventional applications, functions and properties

Optical fibre cables - Part 100-38: Generic specification - Basic optical cable test procedures - Mechanical tests methods - Test methods for the evaluation of jet blast behaviour of fibre optic cables and microducts in in-house networks