Railway signalling symbols - Specification for symbols for circuit diagrams1 Scope This British Standard specifies the symbols to be used on railway signalling circuit diagrams but does not provide guidance on their application. It also gives a standard system of nomenclature and labelling of wires such that each wire can be readily identified with that shown on the circuit diagram. This British Standard does not cover symbols for high voltage power distribution, telecommunications or electronic products. These are covered

if you are a manufacturer of open fronted gas-fired independent space heaters

2 Project support activities

It simulates the hardening that a binder undergoes during mixing in a mixing plant

Some guidance for this is given in Annex A

or recommendations to the users of the product for environmental improvement

although a fundamental change in line with the guidelines might well be limited or not practicable

Adds a requirement to inform customers when safety-critical work has been done

BS 7121-2-1 is a part of a multi-series of British standards on code of practice for the safe use of cranes

Using BS EN 62148-2 you can specify the physical interface specifications for the SFF MT-RJ/LC/MU duplex 10-pin fibre optic transceiver module family

C/N (dB) for 5 % ESR in typical urban channel

Clause 5 was specified and revised

This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA)