1-22
Operation of the platform is strictly forbidden in the event of wind speeds of over 45 km/h.
- The following scale is given for an empiric evaluation of the wind speed:
BEAUFORT scale (wind speed at a height of 10 m from flat ground)
Force Type of wind
Speed
(knots)
Speed
(kph)
Speed
(m/s)
Effects on Land Sea condition
0
Calm
0 - 1 0 - 1 < 0,3
Smoke rises vertically. Sea like a mirror.
1
Light air
1 - 3 1 - 5 0,3 - 1,5
The wind bends the smoke. Ripples but without foam crests.
2
Light breeze
4 - 6 6 - 11 1,6 - 3,3
The wind can be felt on the face,
shakes the leaves.
Small but evident wavelets.
3
Gentle
breeze
7 - 10 12 - 19 3,4 - 5,4
The wind continuously shakes the
leaves and twigs.
Large wavelets Perhaps scattered
white horses.
4
Moderate
breeze
11 - 16 20 - 28 5,5 - 7,9
The wind raises dust and scraps of
paper, shakes the twigs.
Small waves. Fairly frequent white
horses.
5
Fresh breeze
17 - 21 29 - 38 8 - 10,7
Leafy shrubs sway.
Small waves form on inland waters.
Moderate waves, many white
horses.
6
Strong
breeze
22 - 27 39 - 49 10,8 - 13,8
Shakes thick branches, metal wires
hum, it becomes difficult to keep an
umbrella open.
Large waves begin to form, white
foam crests, probably spray.
7
Near gale
28 - 33 50 - 61 13,9 - 17,1
Whole trees sway, it is difficult to
walk against the wind.
Sea heaps up and white foam blown
in streaks along the direction of the
wind.
8
Gale
34 - 40 62 - 74 17,2 - 20,7
Breaks the branches of trees, it is
almost impossible to walk against
the wind.
Moderately high waves, crests begin
to break into spindrift.
9
Strong gale
41 - 47 75 - 88 20,8 - 24,4
Causes slight damage to buildings
(stacks, tiles, etc..).
High waves. Dense foam along
the direction of the wind. Crests of
waves begin to roll over. Spray may
affect visibility.
10
Storm
48 - 55 89 - 102 24,5 - 28,4
Rare inland, uproots trees, causes
considerable damage to buildings.
Very high waves with long overhanging
crests. Visibility affected.
11
Violent
storm
56 - 63 103 - 117 28,5 - 32,6
Very rare, causes extensive
devastation.
Exceptionally high waves that may
hide medium sized ships. Visibility
affected.
12
Hurricane
64 + 118 + 32,7 +
Causes very serious catastrophes.
The air is filled with foam and
spray. Sea completely white with
driving spray. Visibility very seriously
affected.
F - MAINTENANCE
Your platform must be periodically inspected to ensure its continued compliance. The inspection frequency is defined by the current legislation in the
country in which the platform is used.
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