Item no.: 960314.R5
Date 2006-09-11
Issued by: Technology
Class: II
Type: MAN
Page 11 of 32
Safety Regulations for Operators and Technicians
V90 – 3.0MW/V100 – 2.75MW
Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com
Before entering the hub or working on rotating parts in the nacelle, make sure that the rotor is locked
and that the blades are fully feathered. See section “Operating the Rotor Locking System” on how to
activate the rotor locking system.
Before descent, close the nacelle skylights and the service hatch. Make sure that you have gathered
all tools and remember that the red emergency stop buttons must be off.
If the blades are iced up, it is highly dangerous to stay below or close to the rotor. If the turbine is to
be restarted with iced up blades, the operator must be very careful and make sure that no persons
are nearby because of the risk of falling pieces of ice.
Do not stay in the nacelle while the turbine is in operation, unless if checking for gear and generator
noise.
Any oil or grease spills must be cleaned up because of the risk of slipping.
Make sure that the covering and the locking of the high voltage installations are undamaged.
Make sure that the high voltage cable between the high voltage installations in the nacelle and the
bottom are undamaged and do not have any visible mechanical damages, such as having been
squeezed/cut by cable binders, mechanical parts etc.
When working in the nacelle, spinner or roof, please pay attention to safety hooking points. See figure
3.
When working on the roof of the nacelle, secure a safety line on the roof rail. See Picture 11 Hooking
points on the roof.
Special caution must be taken when climbing lattice towers when it is wet or icy. Moreover special
cautions must be taken when climbing on the outside of the lattice tower, since the back of the blade
is close to the lattice tower when the blade is turning around its longitudinal axis. This happens if
anyone pushes <PAUSE> or <EMERGENCY STOP> and also at an unintended EMERGENCY
STOP.
