O

 

oak frame

object monitoring

obstructuon to spray

off gs temperature

oil bath for hardening

oil burner

oil fired central heating

old building

open - web grider

open air storage

open escape way

open line

opening detectors

operating , response time

operating instructions

operation

operation pressure

operation principle

operational order

operational readiness

operational safety

operational safety X

operational tactics

operational units

opportunity of spreed

optical density of smoke

optical detector

optical smoke detector

order, regulation

organic

organisation of fire prevention

outbreak of a fire

outbreak of fire

outdoor fire

outdoor perimeter suveillance

outlet

outlet coupling

outside fire / open fire

outside fire attack /attack from the outside

overflow

overheating

overload

overpressure, exesspressure

overvoltage protection

oxidation

oxidation agent

oxidation process

oxidise

oxygen

oxygen hydrogen gas mixture

oxygen starved, low in oxygene

oxygen supply

oxygene deficiency