Explosion in plastics - cased alkaline cells used for power storage & stand - by duties on BR (TN-LON-001)

1. INTRODUCTION 1.1 Nickel-Cadmium alkaline cells with cases made of polystyrene and acrylic plastic have been in use on B.R. for more than a decade and thousands of them are at present situated in standby power supplies for signalling and the operation of points and crossing barriers. Batteries of...