New Generation PTC Super heavy lift cranes - Mammoet BV

New Generation PTC
Super heavy lift cranes

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The “smallest” super heavy lift cranes
Mammoet’s New Generation PTC cranes - key features
1. Designed and built to the highest international safety standards, verifi ed by Lloyd’s Register 12
2. Nonstop load chart interpolation: fl exibility and time savings 13
3. Luffi ng jib reaches across plant structures, without reduction of the load moment 14
4. Wheeled bogies: slew a full circle in 15 minutes 14
5. Fast winches lift loads up to 3,200 t (3527 US ton) to 120 m (394 ft) from 12 minutes 15
6. Winches, not strand jacks, so no need for frequent hoist rope replacement 15
7. Smallest footprint heavy lift crane: swing radius, including ballast, only 22 m (72 ft) 16
8. Low ground bearing pressure: max. 20 t/m² (4100 psf) across a diameter of 45 m (148 ft) 16
9. High reliability: electric and hydraulic systems 100% redundant and the experience of 17
17,000 PTC lifts
10. Operational wind speed 14 m/s (31 MPH), design wind speed 18.5 m/s (41 MPH), 18
survival mode 67 m/s (150 MPH)
11. For all climates: artic-proof down to -40°C (-40°F), desert-proof up to +55°C (+131°F) 19
- no load chart reduction
12. Containerized: worldwide mobilization in 3 to 6 weeks 19
13. Relocation on site on SPMTs or on crane track 19
14. Reduced environmental impact: “green ballast” and reduced emissions 20
Mammoet’s New Generation PTC cranes:
Versatile and effi cient super heavy lift cranes with a small footprint
page

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PTC: Platform Twinring, Containerized
Mammoet has a worldwide fl eet of some 1300 cranes. However, conventional cranes are simply not
enough for our largest projects. In 1996 we designed and built our fi rst PTC. The crane platform rests on
a ring for slewing, the twin booms form a stable A-frame, and all the components are the size of standard
shipping containers. These PTCs allowed us to undertake large projects more effi ciently, even at remote
sites. Mammoet now has more than ten of these cranes and a wealth of experience developed over
17,000 heavy lifts with them. We also have 15 years’ of in-house expertise of engineering these super
heavy lift cranes.
The success on the market proved the validity of the concept and we have developed it into the New
Generation PTC cranes described in-depth in this brochure. We are building three of these cranes, in two
sizes, and already have several launch customers designing projects around them.

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15 years of in-house engineering
MSG T30 PT50 PTC35 PTC35 DS New Generation PTC
1996 2000 2011
Gantry: Strandjacks Sliding Bogies Winches Wheel Bogies

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Cranes and sliding gantries compared
The PTCs are real cranes, not sliding gantries (or lifting machines). Sliding gantries operate more slowly,
move on skid shoes, and use strand jacks for lifting. This is a suitable concept for a single heavy lift during
a project, for example using Mammoet’s MSG system. However, a PTC crane is far more versatile and
effi cient and can be used for many lifts during a project. Furthermore, the strand wire used with strand jack
systems suffer heavy wear and need to be replaced after a few lifts, which is costly and takes time.
MSG (single lift)
Single lift versus multi lifts
PTC (multi lifts)

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Mammoet PTC (multi lifts)
MSG (single lift)

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1. Designed and built to the highest international safety
standards
The New Generation PTCs are designed to meet both European and American safety standards
(EN 13000, ISO 4305, ASME B30.5, SAE J987, ASME NQA-1). The design and construction are fully
certifi ed by Lloyd’s Register (design approval, fabrication survey, test witnessing). This included a full and
detailed design review.
One of the key design requirements was to ensure the safety of the riggers when erecting the crane. This
has been done by providing safe walkways and other fall-protection measures. Hence, the high safety
standards you maintain will be complied with throughout Mammoet’s presence on your plant.
These PTCs feature unique hydraulic pin connections designed in-house by Mammoet. These improve
safety and save time when erecting the crane. Furthermore, this design reduces the wear of the pins,
again enhancing safety and reliability.

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2. Nonstop interpolation
There are three options for rigging the New Generation cranes :
- main boom (SSL)
- main boom + fi xed jib (SFSL)
- fi xed main boom + luffi ng jib (SWSL)
These modes make the cranes even more versatile when striking the balance between maximum load and
maximum radius, and give a greater choice when determining their location on site.
For operation in SWSL mode, load charts are provided for selected main boom angles. For greater
fl exibility, interpolation between two load charts possible. This is Mammoet’s unique “nonstop interpolation”
principle on a ringer crane. This means that any lift can be planned to make the best use of the crane
capacity.
The load charts for the SSL and SFSL modes specify the maximum loads at specifi c radii. The maximum
load at an intermediate radius may be obtained by interpolation within a load chart.
235m
(770 ft)
Non-stop interpolation
205m (672 ft)
Variable Angle

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3. Luffi ng jib to reach across plant structures
The New Generation PTCs are generally fi tted with a luffi ng jib [length: 42 m (138 ft) – 106 m (348 ft)] to lift
loads across structures on your plant. The luffi ng jib also makes it possible to position the crane such that
a more favorable load moment is obtained. This is a great advantage over sliding gantries with a rigid main
boom, which have to be positioned at a much greater distance from the load to reach over structures. The
smaller operating area required by a PTC is another key advantage, especially on congested sites.
For a PTC with luffi ng jib, a load of 1000 t (1100 US ton) at a radius
of 100 m (328 ft) is a easy feasable lift.
The control software incorporates “virtual walls”, essentially
exclusion zones to ensure that the crane only operates in a
permitted area, to ensure safe operations.
4. Wheeled bogies for effi cient slewing
GBP = 20 t/m 2 (4100 psf)
The New Generation PTCs slew on bogies and can rotate a full circle in just 15 minutes. This makes
operations much more effi cient than with sliding gantries moving on skid shoes.
Slewing 360 degrees means that loads can be picked up and placed across a large part of the site,
for more effi cient lifting operations. The control system suppresses stick-slip at the start of slewing, for
smoother operation and greater safety. The slewing drive is powered by redundant hydraulic powerpacks
for high reliability.

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360°
15 minutes
125 - 250 t
up to
20 m/min
138 - 276 US
ton up to
66 ft/min
250 - 3200 t
120 m from
12 minutes
276 - 3527
US ton
394 ft from
12 minutes
5. Fast winches
The cranes are fi tted with four
800 t (882 US ton) main winch
systems for a total lifting capacity
of 3,200 t (3527 US ton). These
winches are automatically
synchronized and controlled.
Loads up to the maximum
capacity are hoisted at a speed of
10 meters per minute (33 ft/min).
This makes operations much
more effi cient than with gantries
using strand jacks which typically
have a lifting speed of 10 meters
per hour (33 ft/hr).
The New Generation PTCs are
also fi tted with a 250 t (276 US
ton) auxiliary hoist, with a lifting
speed of 10 (33 ft/min) or
20 m/min (66 ft/min), depending
on the confi guration.
All lifting operations are monitored
by fully redundant load cells in the
main boom and luffi ng jib, and
controlled by duplicated PLCs.
The electronic systems also
feature remote diagnostics for
improved effi ciency and safety.
6. Winches, not
strand jacks
Although strand jacks are
valuable tools for heavy lifting
operations, and regularly used by
Mammoet, they are best suited to
single lift projects. This is because
they are slow and wear the strand
wire out quickly which then
needs replacement. The New
Generation PTCs use winches for
more effi cient operations and a
much longer rope life.

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7. Small footprint
As the New Generation PTCs carry all the ballast within the ring they have zero tail swing. This is a great
advantage when operating on congested sites. It also means the crane can be positioned closer to the
load to make better use of the available load moment.
The swing radius of only 22 meters (72 ft) (including ballast) makes the New Generation PTC cranes the
“smallest” super heavy lift cranes.
PTC Footprint diameter 45 m (148 ft) PTC Footprint diameter 55 m (180 ft)
140,000 tm
GBP = 20 t/m 2 (4100 psf)
8. Low ground bearing pressure
200,000 tm
GBP = 20 t/m 2 (4100 psf)
The New Generation PTC cranes have load spreaders, with an outside diameter of 45 m (148 ft).
This results in a maximum ground bearing pressure (GBP) of 20 t/m². Hence, only limited site preparations
will be needed. This is a key advantage over equipment such as heavy crawler cranes which can have a
GBP up to 100 t/m² (20500 psf).

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9. High reliability: 100% redundant systems
All key electric and hydraulic components of the New Generation PTCs, such as the power packs,
gearboxes, slewing and hoisting drives, PLCs and electronics are fully duplicated. Hence, repairs and
maintenance can be carried out without interrupting the lifting operations.
The hydraulic powerpack is driven by two Caterpillar C18 diesel engines which meet strict emission
requirements. If one powerpack fails or needs to be shut down for maintenance, the crane can continue
operations at full capacity. In the unlikely event of failure of both powerpacks the crane can be operated
using an external powerpack (manual system).
The PLCs, load cells on the boom and jib and SLI/LMB safety systems and their cabling are also fully
duplicated. In the event of a serious external factor the crane is switched from the master to the back-up
systems and will be operational again within fi ve minutes. Should all control systems fail then the crane
may be operated manually to lower the load.
Each of the main winches is fi tted with six hydromotors but can operate at full capacity with only four.
Again this means that lifting operations are not delayed by maintenance or repairs.
Redundancy for Drive: + 200% Redundancy, 100% Redundancy and Manual system
Redundancy for Boom-Electric (Loadcell, LMB): + 200% Redundancy, 100% Redundancy

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The design of the New Generation PTCs benefi ts from 15 years’ experience and 17,000 lifts with our
previous ring cranes, often in demanding environments. The Mammoet engineering department has
analyzed the data gathered during these operations and used it to optimize the PTC design in terms of
safety, reliability and effi ciency.
Redundancy 200% Redundancy 100%
F.e. Hit by lightning
- Mastersystem 100%
- backup system 100%
- manual 0%
- Mastersystem 0%
- backup system 100%
- manual 0%
Optimal Operation Operational again:
within 5 minutes
10. Resist high wind speeds
Manual Redundancy
F.e. Hit by earthquake
- Mastersystem 0%
- backup system 0%
- manual 100%
➔ ➔ ➔
Secure load:
within 4 hours
Hurricane Survival Mode
F.e. Hit by hurricane
- Mastersystem 0%
- backup system 0%
- manual 100%
Hurrican survival mode:
within 4 hours
The strong A-frame formed by the twin boom allows operations at wind speeds up to 14 m/s (31 MPH),
but until 50 m/s (112 MPH) the mainboom and luffi ng jib can remain fully erected. The crane can be made
Hurricane proof [max. 67 m/s (150 MPH)] within four hours. No auxiliary crane is needed for this, or for
return to normal operations.
11. Operate and survive in demanding environments
67 m/s
(150 MPH)
Mammoet has extensive experience operating in extremely hot and cold environments. The New
Generation PTCs can operate in arctic environments down to -40°C (-40°F) or in deserts up to +55°C
(+131°F) without any impact on the load charts. Many other cranes in the market have to be derated
below -20°C (-4°F) because of the brittleness of steel components at low temperatures. The New
Generation PTCs is built to even survive moderate earthquakes (exact rating t.b.d.).

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12. Rapid mobilization, worldwide
Like all PTCs, the New Generation cranes break down into components the size of a standard 20 or
40 foot shipping container. Consequently they can be shipped worldwide without the need for special
equipment at ports or in transit. This is a major advantage when working on remote sites in areas with
a poor infrastructure. The luffi ng jib means that a PTC is partly self erecting and needs a relatively small
assembly area. Only two mobile cranes are needed, which can be provided by Mammoet or obtained
locally. Assembling generally takes three to six weeks.
13. Relocation on-site
on crane tracks using SPMTs
The luffi ng jib and large radius of the New Generation PTCs mean that there will be little need to move
them on site. However, they can be relocated without disassembly using SPMTs (Self-Propelled Modular
Transporters) or on crane tracks.

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14. Reduced environmental impact
Like all large cranes, the New Generation PTCs need a signifi cant amount of ballast. Instead of
transporting the ballast from a Mammoet depot, locally sourced material is used to reduce the
environmental impact associated with transport. This is Mammoet’s “green ballast” concept. The
Caterpillar powerpacks are fuel-effi cient and meet strict emission requirements. The power management
system can shut one of the duplicated powerpacks down to reduce emissions and fuel consumption.
Market segments
Offshore
Module lifting in short time: FPSO, FLNG (PAR, PAU)
f.e. Module lifting moving on rail track

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Power
Power: all lifts effi cient in short time from 1 position
f.e. 1000t @ 100m radius (1100 US ton @ 328 ft)

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Petrochemical
Safe and less downtime
f.e. 2500t @ 65m radius (2756 US ton @ 213 ft)
f.e. 3200t @ 55m radius (3527 US ton @ 180 ft)

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load [t]
load [US ton]
3500
3000
2500
2000
1500
1000
500
0
4000
3500
3000
2500
2000
1500
1000
500
0
combined load charts [metric units]
0 25 50 75 100 125 150 175 200 225
radius [m]
combined load charts [US customary units]
140,000 tm
200,000 tm
0 100 200 300 400 500 600 700
radius [ft]
140,000 tm
200,000 tm

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Mammoet: “Worldwide leader in engineered heavy lifting,
transport and project logistics”
Mammoet is the world‘s leading provider of turnkey engineered heavy lifting and transport solutions.
Our core business is the transport, shipping, installation (including horizontal and vertical positioning)
and removal of heavy or large objects, to and from any location, onshore and offshore. Our engineering
skills, experience, thousands of highly skilled professionals and a vast fl eet of state-of-the-art equipment,
combined with high quality and safety standards, have made Mammoet a market leader, setting trends
and records around the world.
Markets Fleet
Petrochemical
Power
Offshore
Civil
Marine
• 1,300 cranes and sliding gantries,
10 – 3,600 t
• Jacks, skids and gantries, up to
100,000 t
• 3,100 axle lines of Self-Propelled
Modular Transporters (SPMTs) and
conventional trailers
• Sheerlegs, barges and other
maritime equipment
Company
• Annual revenues approx.
EUR 1 billion
• 3,600 employees
• In-house engineering department
Parent company: SHV
• Annual revenues approx.
EUR 12 billion
• 45,000 employees
Safety always a top priority
Safety comes fi rst in everything we do. Mammoet operates a stringent, successful and highly respected
Safety, Health, Environment and Quality Program (SHE-Q). These standards are always upheld for the
safety of all the people and objects involved. The program is implemented throughout our organization,
backed up by training and development programs. Our safety offi cers focus on safety and the impact of
our activities on the environment, but it is not their responsibility alone: it is a key responsibility of everyone
working at Mammoet.
Inventive and innovative
Invention and innovation are in our blood, as every assignment is unique. Our in-house engineering
department develops specialist solutions and equipment for complex projects. The New Generation PTC
cranes covered in this brochure are one example of their work.
Worldwide presence
Mammoet has 90 offi ces and operational bases throughout the world to keep lines of communications
short. Our advanced logistics operations can deploy equipment quickly, even at remote sites.

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www.mammoet.com/ptc
watch updated news Mammoet’s New Generation PTC Cranes

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Mammoet’s New Generation PTC cranes
The “smallest” super heavy lift cranes
Main offi ce:
Mammoet Holding B.V.
Karel Doormanweg 47, Haven 580
3115 JD Schiedam
The Netherlands
Tel: +31 (0) 10 2042 424
Fax: +31 (0) 10 2042 442
info@mammoet.com
www.mammoet.com
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