Optical amplifiers. Test methods - Multichannel parameters. Pulse method using an optical switch and optical spectrum analyzer

One method described in BS 903-C4 of determining electric strength is by rapidly increasing the voltage until breakdown occurs and the other is by a steady increase in the applied voltage step-by-step at 20 s intervals

It includes health and safety recommendations that are also relevant to cut-and-cover tunnelling

Test methods for dynamic performance and dynamic strength testing of components and systems

Lundberg and A

Phased array technology can be used as a stand-alone technology or in combination with other non-destructive testing (NDT) methods or techniques

— with nominal thread diameters

BS EN ISO 14698-1:2003 Cleanrooms and associated controlled environments

in order to provide the lighting performance needed for safe movement of people in the event of the supply to normal lighting failing

This International Standard is applicable only to safety photographic film (see ISO 18906)

using ITU-T Recommendation V

Who is BS 89250 – Thermoplastic moulded components for

Adhesive tapes manufacturers