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Safety features of hospital 02 supply (VIE - Vacuum insulated evaporator…
Safety features of hospital 02 supply
VIE - Vacuum insulated evaporator
Most economical way to store and supply 02
Pressure relief valve to exhaust 02 if >1000kPa
If pressure is too low, automatic valves open allowing liquid 02 to pass through heat exchange coils - vapour - increased pressure
Pressure transducers alarm automatically to indicate when refilling necessary
A bank of cylinder manifolds supplying 02 at lower pressure in rare event that VIE supply fails
Pressure regulators reduce VIE pressure to 1000kPa to pipeline pressure
The pipeline
Properly constructed of appropriate sized pipes to handle hospital demands without causing a pressure drop
Pressure tested for leaks
Check for possible cross links to non 02 lines
Cleaned with medical air (no grease involved in construction)
Wall outlet
Colour coded 02 is white
Sleeve indexed to prevent connection to non 02 line
Self sealing that allows removal of hoses from outlet without injury to staff and excessive escape of gas
02 quality
Manufactured to medical grade quality and contains very very few impurities
Personnel
Dedicated maintenance engineers with training in gas supply
Alarms
02 supply failure alarm are located in a central area in the operating suite that auto alarms when supply pressure is reduced