Period(s) of observation/determination of resulting sound power level if more than one operating condition is usedU.K.
The resulting sound power level is calculated by:
where
L WAa is the sound power level for the hoisting cycle
L WAb is the sound power level for the slewing cycle
L WAc is the sound power level for the derricking cycle
L WAd is the sound power level for the telescoping cycle (if applicable)