Archive for the ‘Arklow Wind Farm’ Tag

Last One   14 comments

So to finish off, once all 3 bearings have been replaced, the hub is lifted back onto the back deck, the blades are all reattached in reverse order, like this.

Wind Farm09-57-53

After all blades are attached the nose cone is put on, the HLB attached and the temporarily steps removed, the main lift commences.

Wind Farm17-30-20

Check out the shadow, I like this shot.

Wind Farm17-48-46

Blades attached and the guys have earned a rest, but not a long one, as soon as we jack down and the tides are right we will be moving onto the next turbine.

Wind Farm16-00-52

I would like to thank Fugro Seacore for the hospitality they showed me onboard the Excalibur, a great bunch of hard working guys/Girls and best of all, the food was fantastic.

Some Facts.

The Arklow Bank Wind Park is the first offshore wind farm in Ireland and the world’s first commercial application of offshore wind turbines over 3 megawatts in size. It is located on the Arklow Bank, a shallow water sandbank in the Irish Sea, around 10 kilometers off the coast of Arklow with an area of 27 by 2.5 kilometres.

The project is being co-developed by Airtricity and GE Energy. In 2002, Airtricity obtained an offshore lease for a 520 MW offshore wind farm. The first phase of the project, commissioned in June 2004, consists of seven GE 3.6-megawatt generators. They were installed by the Danish offshore wind farms services provider A2SEA. Power cables were laid by Five Oceans Services. All of the turbines have a height of 73.5 metres (241 ft) and height to top of blade of 124 metres (407 ft). The blade length is 50.5 metres (166 ft) and each turbine has three blades. Each turbine weights 290 tonnes.

Blade Runners   13 comments

Right, with the hub and blades removed and secure on the aft deck, we now need to remove the blades, this is a tense time for Tom the engineer, if these barges are out of position by 50cm the blades may not fit into there purpose built holders on the main deck, and we cannot move the barges now.

First the nose cone has to be removed and stored on deck.

Wind Farm10-43-25

Once removed the guys get inside and undo all the bolts from the first blade to be disconnected and the two cranes are attached.

This again is a very tricky lift, both cranes and a banksman are in total communication with each other throughout the whole lift.

Wind Farm12-40-55

The cranes weave the blade through and over the legs. This shot gives you a good view of the Deep Diver and a sense of scale of the operation.Wind Farm12-42-09

From a different angle under the watchful eye of Tom, seen on the top level.

Wind Farm16-30-46

Here you can see the purpose built racks which hold the blades in place while work is carried out on the hub replacing the bearings. Also the nose cone and to the right the stand that holds the hub in place. To give you an idea of size, the barge is 32m wide and the blades are 50.5m long, so they stick out over the edge a bit.

Wind Farm13-05-14

Once all three blades are removed the hub is made ready for its lift.

Wind Farm17-14-15

 

 

And it’s lifted over my office, when I say office I mean the place I have my positioning equipment set up.

Wind Farm17-47-30

 

Secure on the main deck the guys get to work, these guys work so well together, every one know exactly what they are to do and just gets on with it, what i found amazing was the way they all adapt to the work place, for instance, one guys will be welding one minute, the next he will be working the mini crane to help someone else and later he will be sweeping up when that part of the job is complete, its clockwork at it best.

Wind Farm18-14-30

 

Old bearing being removed.

Wind Farm11-29-03

The Lift   18 comments

Now we are at the correct height we can start the lift, Once the GE guys are in place inside the turbine, we connect the heavy lift bracket to the crane hook and it’s lifted to the top of the turbine.

Wind Farm10-04-21

You can just make out the GE guys connecting the HLB, once thats connected they will undo all the bolts holding the blades in place from the inside.

Around the same time a lifting strop is connected to the number 6 blade (think of a clock face) for the other crane.

Wind Farm16-08-02

All nuts removed the blades and hub are slowly removed.

Wind Farm07-30-33

Now a great bit of crane ballet is performed and you can see why the barges have to be positioned so exact.

Wind Farm07-46-00

Blades are manoeuvred between the legs and pedestal with great skill.

Wind Farm07-50-11

 

The blades are slowly lowered onto a fixed base on a movable deck at the rear of the barge.

Wind Farm08-05-04

 

This base is used to secure the hub for the removal of each blade.

Wind Farm08-09-15

 

Success, Mark the project manager is a happy man. 1st stage complete.

Wind Farm08-16-30

Posted July 15, 2013 by rigmover in My Work

Tagged with , , , , ,

Wind Farm Again   10 comments

Ok, if you are reading this then I have to presume you are not bored of wind turbines yet, thats good because today is the start of the geeky stuff.

Yesterday I mentioned the height of the cranes and the fact that they can’t reach the turbine in their current position, so what do we do? It’s a jack-up barge so we jack-up, and this is how.

Below is a photo of one leg, the Excalibur has 8 and the Deep Diver has 4, this is on the Excalibur, you see the rusty bit of tube in the middle? Thats the leg, inside the two grey cylindrical bits connected by a 3m hydraulic tube are eight rubber bladders, these rubber bladders are filled with compressed air to expand them and the air released to deflate them, easy.

So to go up the eight bottom bladders expand holding us in place, the hydraulics tubes extend (like in the photo) and once at the correct height the top bladders are filled with air, once we know they are secure, the bottom bladders are released and the hydraulics close to raise the barge by closing the gap, thats 3300 tons of barge, thats about 25.3 blue whales.

In the photo below we are at the top of the leg, about 30m out of the water.

Wind Farm17-34-34

 

This is what the two barges look like at working height, this was the first time I saw them like this, the rest of the time I was on board the Excalibur.

Wind Farm05-39-44

All of the turbines have a height of 73.5 metres (241 ft) and height to top of blade of 124 metres (407 ft). The blade length is 50.5 metres (166 ft) and each turbine has three blades. Each turbine weights 290 tonnes.

Have a great weekend.

Posted July 12, 2013 by rigmover in My Work

Tagged with , , , ,

Planet-Trekker-Blog

Read to Recreate Experiences

Captain Jills Journeys

She sails the seven seas in search of FREEDOM

The Wandering Core

Wander as much as you can!!

svinisceandmore

Looking at the óther side of Dalmatia

flowerywallpaper

einfach schön - simply beautiful * click in the picture

Mustang Maniac

The home to Classic Mustang Restorations

Photofocus

education and inspiration for visual storytellers

Life 365 A Photo Project

Going manual, I'm scared!

Captain Jills Journeys

She sails the seven seas in search of FREEDOM

Make New Tracks

Alternative, Independent British Backpacking Blog

One Man And His Mustang

A Classic '66 Ford Mustang Coupe v8 Full Restoration Guide

Bandwagen

Vintage Volkswagens & Photography

RANDOM IDEAS AND THOUGHTS

The active mind and its take on the goings on of the day.

Atlas Tracer

Crossroads, exposures and travel's ideas!

BLUE OCEAN MARINER

CLIMBING THE HAWESPIPE ONE HAND AT A TIME!

Hiking Photography

Beautiful photos of hiking and other outdoor adventures.

Jayden Miller Photography

Amazing - Awesome - Unique

badsphotoblog

The blog of Bryan Davis Photography

Atlas Tracer

Crossroads, exposures and travel's ideas!

London Unveiled

great places to visit off the beaten path.

shifuedoy.wordpress.com/

Plutôt cool not'life...

losflamingos

photography

van plus 4

2 humans. 2 dogs. 1 converted T5.

sharechair

Everyday Technology for Everyday Folks

Photo avant-garde

Photography at a different level

%d bloggers like this: