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240 F I R E R E S E A R C H (v) The combination of gloss pamt wi th expanded polystyrene presents an extremely hazardous lining capable of promoting rapid fire spread assisted by the fal l of flaming material onto the floor (vi) When exaimned m situ no significant difference is observed between the performance of standard and self-extinguishing grade materials. The flam- mabihty tests conducted on the material by itself do not reflect the fire behaviour of the apphed system (vu) The fire propagation test of B S. 476 Part 6 is a reliable mdicator of the be- haviour of the lining under fire conditions The performance mdex together wi th the sub-mdex for the first three minutes of a test (I/ii) gives a measure of the overall hazard and the flammability of the linmg system (vi i i ) On existmg hmngs wi th gloss-pamt fimsh the reduction in hazard obtained by the use of flame-retardant paints is not adequate. For safety the tiles should be replaced wi th new undecorated material (ix) Expanded polystyrene has a tendency to produce flammg drops on igmtion, but the quantity produced without a finish or wi th an emulsion-pamt finish IS neghgible and restricted to the seat of fire W i t h gloss paint, burning stnps of the material fa l l and continue to burn, thus promoting fire spread (x) Home decorators should, i n the interests of safety, attach the ceiling and the wall hnings wi th an overall apphcation of the adhesive and preferably leave the surface undecorated. I f surface finishes have to be applied, these in order of preference should be flame-retardant paints or matt-finish emulsion paints The use of wallpaper on wall linings is unlikely to increase the hazard significantly. Stark, G. W. V. (Department of the Environment, Fire Research Station, Boreham Wood, Herts, England), White,-R. W. and Moseley, G . E (Agricultural Re- search Council, Institute of Ammal Physiology, Babraham, Cambridge, England) "Wooden Laboratory Cupboards for the Fire Protection of Solvents," Chemistry and Industry, 1193 (1971) Sections: A, H Subjects: Laboratory cupboards. Fire protection, Solvents, Flammable Uquids Authors' Summary Most chemical and biological laboratories require the constant availability of relatively large quantities of flammable solvents stored in Winchester quart bottles I n the event of a fire these can contribute to its very rapid spread and intensity, and cause additional and immediate hazards to staff. Under these circumstances compartments or cupboards capable of protecting their contents for a short time would mimmise the size of fire to be controlled and would assist staff to escape I t IS doubtful i f protection f rom a severe fire for more than ten minutes is required.
