IHC Construction Spreads

8/19/2019 IHC Construction Spreads

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IHC Offshore Tools

IHC Hydrohammer Piling hammersNoise Mitigation Systems

IHC Handling Systems Internal/external lifting toolsleveling toolsGripper & Guiding toolsUpending tools

IHC Seasteel Piling templatesFast Frame

TiNS & TiS Version: 04-2014


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2.916 piles installed for wind foundations in 59 projects

2.205 Mono-Piles - 667 Jacket Piles - 30 Power Station Piles - 14 Metmast Piles

Reliable pile driving & handling equipment

• Pile diameters from 1.52 m up to 6.50 m

• Hammer Types SC-150 up to S-2000

• Water depths 0 up to 45 m• Internal Lifting Tools ILT

• Up-End Systems

• Levelling Systems

The piling innovator

Under construction with Noise Mitigation

Realized with Noise Mitigation

IHC Hydrohammer equipment

IHC Handling Systems equipment

IHC Sea Steel Template Solution


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Noise Mitigation System

Research - Test – Commercial projects

6,5m

S1800 30m

3,5m

S800 30m

3,5m

S800 30m

2,2m

S300 8m

1,2m

S90 4m

0,3m

S30 3m

S2000 30m

6,0m

Pile

Hammer

er

H O2

Diameter

kilo Joule

expected

2014

S2000 23m

6,5m

expected

2014

Variations:

• Water depth

• Location

• Sea floor conditions

• Weather conditions• Diameter pile

• Hammer size/force

• Running/fixed pile

• Temperature

• Sea level (waves)

• Salt percentage

• Vessel type

• ……….…..

Indications

• Back ground noiseNorth Sea

100 - 110 dB

• Total noise with vesselstand-by on side

130 - 140 dB

• Rain increases the background level

10 - 15 dB


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Air Isolated Barrier, using different medium & materials

• Outer screen

• Air gap between inner/outer screen

• Inner screen

• Isolated inner & outer screen

Contained Bubble Screen

• Multi level bubble injection system (water depth compensated)

• Multi size bubble injection (water depth compensated

Extra features• Adjustable Upper Guiding

• Fixed Lower Guiding

• Rotation Tool

• Inclination Tool

• Global Positioning System

• Preservation protection system

• Modular system

IHC-NMS is a two systems integrated solution

Air isolated barrier and a contained bubble screen mitigating respectively low/high frequencies


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NMS – awarded projects execution 2014

Riffgrund NMS-6000 Butendiek NMS-6500

Riffgrund NMS-6000

http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=dfVEwZ3uDUSgnM&tbnid=Sua93kaHCP64QM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS0308597X09001900&ei=i_06UumYL6Km0wX0oYAg&bvm=bv.52288139,d.d2k&psig=AFQjCNG-KUoR8PaXPgQEGwkNinWQOW2pcw&ust=1379684072311741http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=dfVEwZ3uDUSgnM&tbnid=Sua93kaHCP64QM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS0308597X09001900&ei=i_06UumYL6Km0wX0oYAg&bvm=bv.52288139,d.d2k&psig=AFQjCNG-KUoR8PaXPgQEGwkNinWQOW2pcw&ust=1379684072311741


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OWF Riffgrund started 01-2014

NMS-6000/34 Hammer S2000 - Hs 2,0 m - Current 0,8 m/s - 80 Mono-Piles


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Repair Axial supports

12 axial cushioning supports – 12 radial cushinoning supports (total 24)


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NMS-6000 Riffgrund project

Axial rubber cushioning top


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double set of radial rubber cushioning @ top section


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Performed Tests: FEM analyses NMS design

Engineering estimation of “Eigen” Frequency NMS


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Performed Tests - Acceleration tests on inner and outer screen

tests: after assembly – during piling – after refurbishing – during piling


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Axial stiffening middle section Eemshaven acceleration Tune Test


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NMS-6000 Riffgrund project Noise Results Pile 01

40 blows per 25 cm – SEL 163 dB – 1400 kJ


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Adaptive pile driving @ reduced energy max 59 blows/min


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Adaptive pile driving @ reduced energy max 59 blows/min


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NMS-6000 Riffgrund Muller-BBM Report

Independent report based on measurements Baker Consultancy

Without

NMS

With

NMSWithNMS

WithoutNMS

With

NMSWith

NMS


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NMS-6000 Riffgrund Muller-BBM Report

Independent report based on measurements Baker Consultancy


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Environmental situation before NMS

No preventive measures were used

160

without NMS

Background noise level


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Pingers & Seal and soft blows

The equipment scares away harbor porpoises to prevent harm

160

without NMS

Background noise level


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Questioning: are Pingers & Seal scarers necessary?

Is this equipment improving or deteriorating the conditions

160

Background noise levelwith NMS


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Questioning: are Pingers & Seal scarers necessary?

Is this equipment improving or deteriorating the conditions

160

Background noise levelwith NMS

http://www.owp-butendiek.de/


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NMS – awarded projects execution 2014

Butendiek NMS-6500

Butendiek NMS-6500

http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=dfVEwZ3uDUSgnM&tbnid=Sua93kaHCP64QM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS0308597X09001900&ei=i_06UumYL6Km0wX0oYAg&bvm=bv.52288139,d.d2k&psig=AFQjCNG-KUoR8PaXPgQEGwkNinWQOW2pcw&ust=1379684072311741http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=dfVEwZ3uDUSgnM&tbnid=Sua93kaHCP64QM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS0308597X09001900&ei=i_06UumYL6Km0wX0oYAg&bvm=bv.52288139,d.d2k&psig=AFQjCNG-KUoR8PaXPgQEGwkNinWQOW2pcw&ust=1379684072311741http://www.owp-butendiek.de/http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=8SOxkMOcbqPsjM&tbnid=bYvB724otDN3fM:&ved=0CAUQjRw&url=http%3A%2F%2Fforum.skyscraperpage.com%2Fshowthread.php%3Ft%3D177613&ei=rAE7UvbmD5Go0wX4_oHQBg&psig=AFQjCNEwiUekx8dHdmoynsbmlJ1opk1MOQ&ust=1379685103315186http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=LV7AxqDZvabx5M&tbnid=8zLkShqpFGEYsM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.fcdordrecht.nl%2Fnode%2F322&ei=5AA7UrbrB4nP0QWQpoDQCQ&psig=AFQjCNHcxyyD2luCqzkT0KwAhEqZLZNM_A&ust=1379684956736908http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=dfVEwZ3uDUSgnM&tbnid=Sua93kaHCP64QM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS0308597X09001900&ei=i_06UumYL6Km0wX0oYAg&bvm=bv.52288139,d.d2k&psig=AFQjCNG-KUoR8PaXPgQEGwkNinWQOW2pcw&ust=1379684072311741http://www.owp-butendiek.de/


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OWF Butendiek started 30-03-2014

Noise Mitigation by NMS-6500 – Piling equipment S2000

Variations on SEL values by:

• Water depth

• Location

• Sea floor conditions

• Weather conditions

• Diameter pile

• Hammer size/force

• Penetration speed

• Running/fixed pile

• Temperature

• Sea level (waves)

• Salt percentage

• ………….…..

Noise level indications North Sea:

• North Sea with back ground noise100 - 110 dB

• Total noise with vessel stand-by on side130 - 140 dB

• Rain increases the back ground level10 - 15 dB

http://www.owp-butendiek.de/


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NMS air systems

Water removing from annulus by pressurized air and contained bubble curtain


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NMS = 360° current and wave independent mitigation

Diameter 1500 m circular protection all directions covered area = 442 m2

Current

NMS Benfits:

• bubbles emerge @ the release point• Limited air supply: 20 m3/min = 130 kW

• Less CO2 emission (vessel & compressors)

Air bubbles rise with 0.25 m/s

Air released @ 30 m water depth will take 120 s to reach the surfaceWith a current of 1 m/s the bubbles emerge @ 120 m from the release point


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IHC Piling Methods

High Frequency - Low Energy

Increased Blow Rate approx. 90 blows per minute (standard = 40 / min)

Increased Blow Count of approx. 60 blows per 25 cm

Resulting in lower impact energy and a lower noise emission

Advantages

• Decreased pile stress = reduced fatigue

• Reduced load on piling equipment

• Minimum influence in piling time depending on soil

• Lower noise level 3-6 dB SEL

Disadvantages

• Hard & Software improvements required

http://silvergravy.com/wp-content/uploads/2012/04/high_low_freq2.jpg?9d7bd4


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IHC Piling Methods

Smart Pile Driving - programmed SPD Expected 2015+

Pile driving with real-time monitoring

• Pile penetration per 10 blows

• Noise level per blow @ 750 meter

• Impact energy

• Blow count

Advantages

• Immediate intervention if the noise requirements are

exceeded

• Optimization of piling time (energy/frequency)

• Decreased pile stress resulting in reduced fatigue damage

• Less restrictions on pile design

• Reduced load on piling equipment

• Primary or back-up noise mitigation measure

• “SMART” piling by “smart IHC operators” available

Disadvantages

• Hard & Software improvements in development


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“Efficient Pile Driving” EPD a new way of piling

Reducing of the piling energy = reducing the impact on the environment

Possible future piling campaign

Increased Blow Rate approx. 80-90 blows per minute

Increased Blow Count of approx. max 100 blows per 25 cm

After reaching 100 blows /min energy will be increased gradually

Challenges:• the data processing 30 sec – 60 sec

• using a near field array (testing)

Benefits:

• Less noise

• Less CO2 emission

• Less fatigue in pile• Less fatigue on equipment

http://programsuccess.files.wordpress.com/2012/04/efficiency.jpghttp://programsuccess.files.wordpress.com/2012/04/efficiency.jpghttp://programsuccess.files.wordpress.com/2012/04/efficiency.jpghttp://programsuccess.files.wordpress.com/2012/04/efficiency.jpghttp://programsuccess.files.wordpress.com/2012/04/efficiency.jpghttp://programsuccess.files.wordpress.com/2012/04/efficiency.jpg


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Challenges for the next generation NMS-8000

Past performance is no guarantee for the future. it’s time to make a changeRealizing the noise mitigation performance regardless of:

• Hammer energy and size

• Mono Pile dimensions

• Water depths & Soil conditions

• Future legislation

• Legislation in different countries

Methods:

• Modifications to air gap and bubble injection systems

• HiLo, Smart Pile Driving, Efficient Pile Driving

• Introduction of a 3th mitigation system

• R&D analyses of data, FEM prediction, factory tuning.

• R&D ground born noise research,


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Special thanks for corporation & sharing information!Collaboration is the key to innovation


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Thank you for your attention

Henk van VessemGSM [email protected]
mailto:[email protected]:[email protected]

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