Impact testing of eye protectors A machine has been developed by the National Engineering Laboratory for testing the general robustness and impact strength of eye shields to the requirements of British Standard 2092 (1967). The unit incorporates the following features: A British Standard anatomical headform mounted on an adjustable stand, enabling the test shield to be mounted and orientated to the various positions required b y the Standard. Propulsion equipment comprising a precision bore glass tube through which a standard 6-Smm (¼ in) steel ball is propelled by compressed air to strike a selected position on the target shield. The mechanism is triggered by an electromagnetic relay, air pressure to give the required velocity being preset on a gauge. A digital timer which records the time taken for the steel ball to pass between two magnetic coils placed at the delivery end of the tube, close to the point of impact. A third coil, positioned at the firing end of the tube, is connected to a reset switch on the timer so that previously recorded or spurious figures are erased before the missile passes through the timing system. For safety reasons the head-form is enclosed in a box with perspex sides and hinged lid and the glass tube is protected by a removable metal casing.
and underwater sonar location devices. It will also widen the range of aircraft required to carry flight data recorders and will extend the range of information to be recorded.
Safety training manual Pira, the research association for the paper and board, printing and packaging industries, has produced a selfinstruction manual Safety in prin ring induction for works staff at the request of the safety training sub-committee of the Printing Safety Group. This manual uses an active learning technique, as opposed to the usual passive lectures and films, aims to produce an attitudinal change by inducing a safety sense, rather than concentrating on the mechanics of safety, and is a cooperative venture with all the bodies concerned with health and safety in the printing industry.
Cockpit voice recorders
The manual is a self-instruction programmed text, illustrated with sketches and colour slides. Selfmarking pre- and post-test papers are provided, so no instructor is required. This approach answers one of the problems of induction training, where only one or two new entrants may need training at one time. It uses an active learning technique with the aim of inducing a safety sense by promoting an awareness of the causes of accidents, particularly of the human factors involved, and thus cultivating the right attitude of mind to avoid accidents.
From 1 January, 1975, the Civil Aviation Authority will make it mandatory for British registered aircraft to carry cockpit voice recorder systems
The manual is one unit of instruction, to be integrated into the induction programme for production and maintenance workers. It has been
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AppliedErgonomics
December 1974
designed specifically to meet the needs of young and adult entrants to the industry, but could be valuable as revision material for work-experienced or previously trained personnel. The material is so presented that it could well provide a pattern for induction safety training over a broad spectrum of industries. The price is £6.50, including 1 copy of the Test Booklet. Additional Test Booklets are 15p per copy. Obtainable from: Publications Sales Office, Information & Training Division, Pira, RandaUs Road, Leatherhead, Surrey, KT22 7RU, England.
Safety at Du Pont The 1973 annual review of the Du Pont group points out that safety has long been ranked by Du Pont as equal in importance with production, product quality and costs. For man3' years, they have maintained a highly developed safety programme in which every employee plays a part to prevent accidents both on and off the job. 1973 was the safest year ever for the Du Pont subsidiaries in Europe, with_ only 0"28 time-losing injuries per million man-hours worked. This rate is substantially better than European industry averages.
Comfort for wheelchair patients A cushion for use in wheelchairs is so resilient that a fresh egg can be depressed into it without breaking! Called the Reston Floatation Pad. this cushion is made by 3M to help prevent tuber-ischial decubitus ulcer. Constructed of liquid-filled microcetl sponge, with average microcell diameter only 0-25 microns, the Reston Floatation Pad provides optimum distribution of pressure. Depression caused by the tuber-ischii results in the surrounding pad surface giving reciprocal support. This optimum distribution of pressure ensures capillary blood flow ts maintained in the pressure zone to a greater degree than it would be otherwise. Even foreign items (eg, a bunch of keys) sat upon inadvertently will hardly be felt by the patient. Where a change of position cannot be afforded frequently to t h e p a t i e n t . such preventative treatment is even more important. The considerable weight of a totally dependent patient is a factor here. The Pad can be used also in the case of bed patients. Here it ~s particularly valuable in helping to