Respiratory equipment. Breathing gas demand regulator used for diving to depths greater than 50 metres. Requirements and test methods LONG_TITLE in-service maintenance

in-service maintenance

Freestanding or built-in grills

BS 7177 is a British Standard which specifies requirements for the resistance to ignition of mattresses

The hazard of dust layer ignition is also described

The dry mass of aggregates filling a specified container is determined by weighing and the corresponding loose bulk density is calculated

Respiratory equipment. Breathing gas demand regulator used for diving to depths greater than 50 metres. Requirements and test methods LONG_TITLE in-service maintenanceWhat is this standard about? The efficiency of breathing demand regulators is fundamental to the safe use of many types of underwater breathing apparatus. However until now, no standard covered demand regulators in self contained diving apparatus to depths greater than 50 metres; or demand regulators in umbilical supplied apparatus beyond 60 metres. Given that deeper dives now take place more frequently, BS 8547 was written to meet the clear need for