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BOC Immingham Dissolved Acetylene Project Environmental Statement: Vol. 2 Main Text
Unit Definition
LAFmax (dB) maximum noise level (in dB(A)) with a FAST time weighting in a
stated interval (sound)
m metres (length)
m 2 square metres (area)
m 3 cubic metres (volume)
m/s metres per second (velocity)
m 3 /s cubic metres per second (flow rate)
mg milligramme (1 x 10 -3 g) (mass)
mg/Nm 3 milligramme per Normal cubic metre (concentration)
mm millimetre (length)
MW megawatt (power)
Nm 3 normal cubic metre (i.e. m 3 expressed at 273K and 101.3 kPa)
(volume)
s second (time)
t metric tonne (= 1,000 kg) (mass)
Prefix Symbols and Multiples
Symbol Definition
T tera (x 10 12 )
G giga (x 10 9 )
M mega (x 10 6 )
k kilo (x 10 3 )
m milli (x 10 -3 )
μ micro (x 10 -6 )
5100935.404 Environmental Statement August 2011 xvi