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William Cundiff
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Mr. Cundiff,
I've read through the Nordex Safety Manual, as well as the Vestas Safety Manual. I consider the Vestas manual
also a credible source of information since Vestas is the leading Wind Turbine manufacturer, with approx. 70%
market share worldwide.
In the Nordex Safety Manual on Page 52 it states:
DANGER! FALLING TURBINE PARTS In case of a fire in the nacelle or on the rotor, parts may fall off the wind turbine. In case of a fire,
nobody is permitted within a radius of 500 m (1640 ft) from the turbine.
Safety Manual on Page 8 it states:
In the Vestas (V90)
Do not stay within a radius of 400m (1300ft) from the turbine unless it is necessary
From an engineering point of view, I'd consider these absolute minimum parameters, since they are related to safety and hazard zones.
Both manufacturers seem to agree that there is a real hazard zone where parts can "fall off" between 400m to 500m. Our research also
concurs with this. However, the setbacks established by the Developer and the ZBA in the variance are 305m (1000' ft) from dwellings,
(not property line). This is well within this hazard zone, which is a direct contradiction to the manufacturers recommendations. In most
cases, this will waive any liability from the manufacturer if an accident occurred.
If I take this data at face value, I'd strongly advise the ZBA and the Planning Board to reconsider the 1000 ft setback in light of this
information. At absolute minimum, the setbacks should be changed to 500m (1640) feet from all property lines (not dwellings) to assure
safety of anyone at any point on their property in the event of a fire or other turbine failure. Anything closer is clearly within the
manufacturer's hazard zone.
It is stated in the Variance Decision of May 13 2009 that:
" Although the Site Plan Review decision may dictate more extensive setbacks, in no event shall such decision decrease the number of
turbines below 13 or decrease the aggregate wind efficiency of the project as presented by by the applicant and analyzed by the Board
during the site plan review process."
The ZBA meeting of May 6, 2009 spent a lot of time on this specific language. It was agreed not to reduce the efficiency of the project,
but the verbal discussion also said that a health or safety issue would likely take some priority over a "project efficiency" issue.
The Douglas Wind Bylaw also speaks from the position health and safety and not about "project efficiency".
We have submitted quite a lot of information stating turbine failure can result in flying debris over 1500 ft, in some cases up to 3000 ft.
The Nordex safety manual validates all the information we've submitted.
I only see one way to interpret this:
1.) Keep the turbines a minimum of 500m (1640 feet)* from all properly lines, not just dwellings. Any area of property where a person
can stand, walk, play.... etc. should be out of the manufacturer's hazard zone. This includes state forest land where hikers and hunters
can be found.
2.) Fence in the entire hazard zone to assure no one can wander into the hazard zone unknowingly. The current plan is to fence in only
an area around the turbines. This doesn't protect hunters and hikers from wandering into the hazard zone.
* This is bare minimum. There should also be a "caution" buffer added to further assure safety. If the hazard (red) zone is 1640 feet,
this doesn't mean safety (green) zone is at 1641 feet. There should be a caution (yellow) zone, (for instance 20% or 300 feet) to be
established by the planning board or ZBA which will further ensure safety of nearby residents and wildlife.
A few words about the "Industry Standard" of 1000 feet: This is not an industry standard. This is a default the developers are using in
the absence of a standard. USA has not established a comprehensive wind siting code yet. This is similar to the construction industry
before 1974, when the BOCA code was first implemented. Plenty of structures were built prior to 1974, but construction is undoubtedly
better and safer today. This has not yet happened with wind turbines.
Chad Pepin [chad.pepin@gmail.com]
Monday, November 01, 2010 2:44 PM
William Cundiff
Patricia Gates
Wind Turbine Safety Setbacks and concerns
Info - Vestas V90 Safety Manual.pdf; ATT00031.htm
.
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  • Page 1 Info - Vestas V90 Safety Manual.pdf; ATT00031.htm Mr. Cundiff, I've read through the Nordex Safety Manual, as well as the Vestas Safety Manual. I consider the Vestas manual also a credible source of information since Vestas is the leading Wind Turbine manufacturer, with approx. 70% market share worldwide.
  • Page 2 Nordex manual does not take into consideration the heavily wooded site in Douglas. A burning turbine projectile flying 1640 feet could likely start a forest fire wherever it lands. Attached is the Vestas Safety Manual for your reference. You already have the Nordex manual. Best regards,...
  • Page 3 APPENDIX O OPERATION AND MAINTENANCE PLAN 630464 (5)
  • Page 4 Class II Item no.: 964106.R00 2007-06-29 Mechanical Operating and Maintenance Manual V90 – 3.0 MW, VCRS 60 Hz Onshore/Offshore (Mk 7) Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 5 Date Description of changes 2007-06-29 First edition Table of Contents Preface ..........................3 Updating of the Manual......................3 The Header..........................3 Contents..........................4 Please see Mechanical Drawings & Parts List Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 6 Class II indicates that the document is only handed out according to agreement with Vestas’ Technology Department. Each specific chapter has its own item number followed by a revision number (Rx). First editions have revision number R0. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 7 963560 Mechanical Drawings & Parts List Supplier Drawings Item no. Title Chapter 963243 Gearbox Drawings 943674 Parking Brake Drawings 958610 Yaw Gear Drawings 963504 Generator Drawings Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 8 2006-05-08 Language revision. Inserted: section 14.2 Access to roof, text and picture. 2006-09-11 Reference to V100 added Section 19 updated with new pictures and new text. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 9: Table Of Contents

    Directions for Use of Rotor Lock....................17 Operating the Rotor Locking System..................19 18.2 Operating the Manual Rotor Locking System with Bolts ........... 21 Operating the Internal Crane ...................... 25 Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 10: Introduction

    Find the phone number of the local life-saving service. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 11: Controller And Operating Panel

    However, the power supply to the light, the nacelle, the hub and the ground controllers will still be on. The stop button in pos. 3 is not an emergency stop button but a local stopping function. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 12 Please note: When the emergency stop buttons are activated, the brake is activated. Figure 1 Locations of emergency stop buttons and trip F60 in nacelle Picture 2 Yaw ring emergency stop button (pos. 2, Figure 1) Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 13 Page 6 of 32 Picture 3 Gearbox emergency stop button (pos. 1, Figure 1) Picture 4 Emergency stop button at nacelle controller (pos. 4, Figure 1) Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 14 Type: MAN Page 7 of 32 Picture 5 Emergency stop button in hub (pos. 3, Figure 1) Picture 6 The trip F60 button (pos. 5, Figure 1) Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 15: Trip F60

    HV installation. Work done on high voltage installations must be carried out in accordance with national regulations and related Vestas Wind Systems A/S manuals. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 16: Grid Drop-Out

    Check the emergency lubrication. • Recharge emergency lubrication batteries (only every 3 months). • Check the blade locking system. • Check that the brake is released and without pressure. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 17: Overspeed Guard

    Be cautious that safety straps are not caught on any rotating shafts during stay in the nacelle while the turbine is in operation. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 18 This happens if anyone pushes <PAUSE> or <EMERGENCY STOP> and also at an unintended EMERGENCY STOP. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 19: Safety Equipment

    If a service lift is installed in the turbine, bring along the safety equipment in it. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 20: Resq Emergency Rescue Equipment

    • Open the left service hatch. • Lift the arm above the opening. • Fasten the ResQ descent device to the arm. • Ready for lowering, SWL 2000kg. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 21: Access To Roof

    Place the ladder on machine foundation at the rear of the nacelle to gain access to nacelle roof as shown in the picture below. Picture 8 Ladder to roof Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 22: Hooking Points And Safety Chains

    A number of hooking points is installed at different locations in the nacelle. A hooking point is shown in Picture 9 Hooking point. Figure 3 Hooking points in the nacelle and position of safety chains Picture 9 Hooking point Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 23 Page 16 of 32 Picture 10 Safety chains must be mounted when the bottom hatch is open (Figure 3) Picture 11 Hooking points on the roof Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 24: Precautions In Case Of Fire

    – unless it is a visual inspection Work on coupling and braking system if this involves: a. disassembly and adjustment of mechanical parts Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 25 Replacement of components, if this involves: a. replacement of components, sensors, etc. close to unshielded rotating parts of the drive train. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 26: Operating The Rotor Locking System

    When the mandrels are fully out or in, set the handle in "lock" position, see Figure 4. Verify the fully in or out position by looking at picture 11.7.B at the operator panel. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 27 Type: MAN Page 20 of 32 Hydraulic hand pump Upper locking mandrel Picture 12 Rotor locking system Picture 13 Alignment markings seen from machine foundation side Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 28: Operating The Manual Rotor Locking System With Bolts

    16x8 = 128 Prior to mounting the manual rotor lock: • Set the turbine in PAUSE mode and activate the <emergency stop button> to activate the disc brake. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 29 3 bolts again, so you at the end have tightened 11 bolts to 140Nm. (see figure on the following page) Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 30 V90 – 3.0MW/V100 – 2.75MW Type: MAN Page 23 of 32 Do not at any time remove the centering mandrels when the M 16 bolts are not tightened. Figure 5 Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 31 Remove the centering mandrels or pull back the hydraulic rotor lock. Centering mandrel (950461) Figure 6 950084.R1 Bolt M42x200 (782139) Shim (782142) Washer (782138) M 42 nut (782137) Spec. bolt M16 (782141) Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 32: Operating The Internal Crane

    • Inspect all welding on both trolleys for cracks. Repair or replace damaged items. • Inspect all welding on lattice construction for cracks. In case of cracks Vestas Technology must be contacted. • Replace all bolts, nuts and washers on bridge and trolley.
  • Page 33 Release the chain from the chain box. Figure 9 The chain box The crane can be moved longitudinally by a winch mounted on the machine foundation. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 34 ¼ extra turn after contact . Warning: Visual inspect: Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 35 The crane must not be used before defects are repaired. Service crane work range. Restricted area. Crane movements. Lock screws Lock screws for for sideways longitudinally directions. direction. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 36 This operation is only to be done by authorized personnel. Transformer lowering position. Transformer lifting position. • Lifting generator. Max. Work load is 12000 kg. This operation is only to be done by authorized personnel. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 37 Type: MAN Page 30 of 32 Generator lowering. Internal crane for lifting components in the hub: This operation is only to be done by authorized personnel. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 38 Item no.: 960314.R5 Safety Regulations for Operators and Technicians Class: II Issued by: Technology V90 – 3.0MW/V100 – 2.75MW Type: MAN Page 31 of 32 Hub components position. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...
  • Page 39 Internal crane for lifting gear stages, Max. work load is 12000 kg: This operation is only to be done by authorized personnel. Tower centerline. Service lifting position. Vestas Wind Systems A/S · Alsvej 21 · 8900 Randers · Denmark · www.vestas.com...

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V100-2.75mw

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