unified IACS rules for double hull tankers
unified IACS rules for double hull tankers
unified IACS rules for double hull tankers
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Vibrations<br />
• Local Vibration Analysis<br />
• Mast Vibration Analysis<br />
• Shaft Vibration Analysis<br />
• Vibration Level Prediction<br />
• Analysis of coupled<br />
machinery/foundation<br />
vibrations<br />
• Vibration measurement<br />
Overall frequencyweighted<br />
r.m.s.-<br />
values<br />
from 1 to 80 Hz<br />
A<br />
Passenger Cabins <strong>for</strong><br />
instance<br />
Area Classification<br />
B<br />
Crew Accommo<br />
dation <strong>for</strong> instance<br />
C<br />
Working Areas<br />
<strong>for</strong> instance<br />
mm/s 2 mm/s mm/s 2 mm/s mm/s 2 mm/s<br />
Values above which<br />
adverse comments<br />
are possible<br />
143 4 214 6 286 8<br />
Values below which<br />
adverse comments<br />
are not probable<br />
71.5 2 107 3 143 4<br />
Note: The zone between upper and lower values reflect the shipboard vibration environment<br />
commonly experienced and accepted<br />
25.05.20052003-12-10
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