January 2011 - Southern African Society for Trenchless Technology

240 000 metres of
Trenchless Pipe
Successfully Installed
Renovate Existing Pipes By:
• Pipe Bursting
• Sliplining
• CIPP UV Cure
• CIPP Ambient Cure
• Ribloc ® Expanda
• Ribloc ® Ribline
• Pipe Eating
Installation of New Pipes
By:
• Horizontal Directional
Drilling
• Guided Rock Drilling
• Bores of 1200mm
• Lengths up to 400 metres
• Microtunnelling
COUNTRYWIDE 08600 66 344
[email protected]
www.trenchless.co.za
Proud Supplier
SASTT
A ard
Aw
of
Excellence
2007 & 2009
Award Winner
TRENCHLESS
TECHNOLOGY
SASTT contact details:
Web: www.sastt.org.za
President:
Andries Lötz
Tel: (011) 688 1483
Fax: (011) 688 1524
E-mail: [email protected]
Honorary director:
Joop van Wamelen
Tel: (012) 567 4026
Fax: 086 668 4026
E-mail: [email protected]
Succeed with . . .
Ditch Witch Technology
Powerful … Productive …
Directional drilling and trenching.
The rugged range of Ditch
Witch Horizontal Directional
Drilling (HDD) equipment and
Chain Trenchers gives you the
punch you need to drill or dig
through some of the toughest
landscapes. And with a wide
choice of attachments, Ditch
Witch lets you triumph over
those tough jobs – everytime!
For further information on hiring
a Ditch Witch please contact ELB
Equipment.
EQUIPMENT
LIMITED
A member of the ELB Group
HEAD OFFICE:
14 Atlas Road Anderbolt Boksburg (011) 306-0700 • e-mail: [email protected] • www.elbequipment.com
BLOEMFONTEIN: (051) 432-3594 • BRITS: (012) 250-1565 • CAPE TOWN: (021) 933-2383 • DURBAN: (031) 464-6522 • GEORGE: (044) 878-0874 • KIMBERLEY: (053) 841-0040
MIDDELBURG: (013) 246-2312 • NELSPRUIT: (013) 755-1003 • WOLMARANSSTAD: (018) 596-3032 • POLOKWANE: (015) 293-1978 • PORT ELIZABETH: (041) 581-0774
BOTSWANA: (00267) 240-4320 • NAMIBIA: (00264) 61-234-052 • SWAZILAND: (00268) 518-5348 • ZAMBIA: (00260) 212-210-642 • ZIMBABWE: (00263) 4 494-871
TRENCHLESS TECHNOLOGY
Manhole launched
directional drill
Imagine being able
to use existing sewer
manholes to lay
networks for electricity,
gas, water and fibre optic
networks without the
need to dig up roadways
or the front gardens of
private properties.
S
WISS PRODUCER of trenchless
pipe- and cable-laying equipment,
TERRA AG, has developed such a
manhole HDD drill that is able to
undertake directional bores from manhole
to manhole for mainline installations and
from manhole to all nearby homes for lateral
house connections.
At 0.8 m deep, you can lay telephone
and fibre optic cables, at a 1.2 m depth
fresh water lines, and at a 1.6 m depth gas
or power lines. This innovative pipe-laying
method was developed over a two-year period
in close cooperation with the French water
supplier SADE. The TERRA MINI-JET MJS 1
600 is a manhole HDD drill for directional
bores in lengths up to 50 m with a minimum
turning radius of 15 m. The directional bore
can be reamed in several steps up to 300
mm even in hard ground. The TERRA MINIJET MJS 1 600 is equipped with a torque of
1 600 Nm, as well as thrust and pull-back
forces of 60 kN (6 t). The MJS 1 600 can drill
from manholes with an internal diameter of
1.0 m and can fit through manhole entrances
of just 0.62 m. Where the entrance is smaller
than this, the manhole cover frame can be
removed. First, the drill’s bed frame is lowered into place in the manhole and tightened
hydraulically in position.
After this, the manhole drill is lifted vertically through the manhole cover and bolted
onto the bed frame. The entire operation of
the TERRA MINI-JET MJS 1 600 is controlled
from the surface where the operator – along
with the control station, rod magazine and
ABOVE The TERRA MINI-JET MJS 1 600
positioned in a manhole
rod lift – are positioned. There is no requirement to enter the manhole during drilling and
back reaming work.
The operator inserts a new drill rod into
the rod lift. The rod lift transfers it down
into the manhole and positions it in the
drilling machine.
The new drill rod is screwed into the last
drill rod. Inductive sensors make this operation possible even where the operator does
not have a view into the manhole. The rod lift
may also be positioned at an angle over the
IMIESA JANUARY 2011 - 71
TRENCHLESS TECHNOLOGY
ABOVE Control station MJS 1 600 with
rod lift
LEFT TERRA Manhole HDD MINI-JET
MJS 1 600 can drill bores up to 50 m
with a bending radius of 15 m and
backreaming up to ø300 mm, enabling
drilling from manhole to manhole for
main network piping and from manhole to
house for lateral connection
drilling machine where the manhole entrance
is not located directly on top of the drilling
machine. Drilling and back reaming takes
place with bentonite, drilling fluid pressure
of 0 to 55 bar and fluid volumes of 0 to 38
l/min. This makes the TERRA MINI-JET MJS
1 600 a small but extremely effective horizontal directional drilling (HDD) machine.
72 - IMIESA JANUARY 2011
SOUTH AFRICA
®
INNOVATIVE AND COST
EFFECTIVE METHODS
FOR SOLVING YOUR
PIPING PROBLEMS
TODAY!
CAPE TOWN- 021 380 4740
JOHANNESBURG- 011 975 2369/71
TOLL FREE- 0800 225 466
www.jetvac.co.za
DRAIN CLEANING - LIQUID WASTE SOLUTIONS - CCTV PIPE INSPECTIONS - PIPE REHABILITATION - PUMP HIRE
TRENCHLESS TECHNOLOGY
International products
for local applications
Reef Trenchless Technology South Africa
was founded in 1996 and in 1998 began to
market, sell and distribute a complete range
of trenchless technology equipment and
accessories in various industries.
T
HE COMPANY has been the sole
agent and impor ter for TT UK
and TT Germany since 1998 and
specialises in trenchless technology equipment and accessories to enable
the most cost-effective method of installing/replacing existing pipes/cables underground, without the associated traffic disruption and environmental impact.
The company’s goal is to provide the best
possible trenchless technology equipment
at a reasonable cost, combined with impact
ser vice for its customers. Trenchless technology equipment on the market includes:
• Grundomat soil displacement hammers
in diameters from 45 mm to 180 mm
• Grundoram steel pipe-ramming hammers
for the installation of steel pipes in diameters of 200 mm to 4 m
• Grundocrack and Grundoburts for form
and grundotugger pneumatic/hydraulic
pipe-cracking replacement systems for
110 mm to 1 000 mm pipes/mains
• Grundopile vertical piling hammers for
50 to 200 mm steel pile casings
• Grundowinch trailer-mounted winches
from 2 to 40 t
• Grundopit, grundobore and grundodrill directional boring systems for the
installation of pipes up to 600 mm
in diameter
• Slipfast pipe pushing systems, which
overcome all problems associated with
slip-lining new pipe into existing old or
decaying pipes
• TT-UK/RSP and TT1000 suction excavators that overcome digging damage to
buried pipes/cables.
Tailor-made systems for trenchless pipe installation
• GRUNDOMAT soil displacement hammers for pipes up to ND 150
– extremely precise due reciprocating chisel head.
• GRUNDORAM ramming machines for steel pipes up to ND 2000 –
also applicable vertically for ramming sheet piles.
• GRUNDOBURST static pipe bursting systems for the replacement
of pipes up to ND 1000
• GRUNDODRILL HDD systems for steerable bores up to ND 600 –
with percussive hammer for stony soils.
• Föckersperger pipe and cable plows – for trenchlessly plowing in
pipes up to OD 225 and cables in open terrain.
• Prime Drilling – Midi & Maxi HDD rigs for pipes up to 1400 mm.
All this and more only from TT.
THE ONLY CHOICE FOR PERFECT PIPE INSTALLATIONS
TT SALES PARTNER IN SOUTH AFRICA:
Reef Trenchless Technology SA (Pty) Ltd 19 Shamrock Road, Primrose • PO Box 2168, Primrose 1416, South Africa
Tel: +27 (0)11 828 2397 / 828 5782 • Fax: +27 (0)11 828 7981 • E-mail: [email protected] • Web: www.reeftrenchlesstech.com
TRENCHLESS TECHNOLOGY
A review of SASTT
IMIESA will be publishing regular contributions
from the members of SASTT, as the adoption
of the technology is rapidly growing in the local
context. Andries Lotz, president of SASTT,
explains why this is the case.
T
RENCHLESS TECHNOLOGY (TT) is
technology for the servicing, rehabilitation and replacement of existing,
and the construction of new, public utilities and other services underground
without the digging of trenches, including
the development of all kinds of underground
mapping techniques, tunnelling devices and
specialist machinery, materials and equipment. The Southern African Society for
Trenchless Technology (SASTT) was formed
as far back as 1992 and is an important
body for advancing the science and practice
of TT for public benefit. It also promotes
education, training, study and research in
the industry.
SASTT is also aware of the necessity
of maintaining a healthy environment and
addressing the ever-changing needs of the
community. Its mission is to promote, from
an ethical and neutral base, the use of TT
for providing and maintaining underground
services with minimal surface and environmental disruption.
The latest SASTT newsletter, membership
information and benefits, constitution and
code of conduct, as well as industry-related
activities and information, can be found on
the SASTT website: www.sastt.org.za
Membership of the society comprises mainly councils, consultants, contractors and
suppliers that are making use of trenchless
methods to carry out various services. Being
a member of SASST automatically qualifies
one with affiliation with the International
Society of Trenchless Technology (ISTT).
SASTT aims to promote TT and also to
develop SASTT standards for various trenchless methods. The first standard for slip lining has recently been completed.
SASTT was also recently recognised by the
Engineering Council of South Africa (ECSA) as
a voluntary association (category C) in terms
of the Engineering Professions Act. In 2009
and 2010, SASTT had an exhibition stand
at the IMESA Conference that proved to be
very informative.
VVKE /PIPES01
74 - IMIESA JANUARY 2011
Vela VKE is a truly South African, multi-disciplinary,
consulting engineering company committed
to transformation.
Vela VKE Board: left to right: Viwe Qegu, Arthur Taute, Mathews Phosa,
Dave Gertzen, Tom Marshall, George Munyai, Job Mokgoro, Mothupi Malaka
Leaders in pipe renovation, with over
sixty years of experience.
Group Head Office +27 12 481 3800
Email: [email protected]
Website: www.velavke.co.za
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TRENCHLESS TECHNOLOGY
No water
No problem
blem
Water scarcity has
become a global
debate. As such, the
following quote is very
apt: “The next war in
the Middle East will be
fought over water, not
politics”.
T
HE SAME man was also quoted as
saying: “Water will be more important
than oil this century” – Former United
Nations secretary general Boutros
Boutros Ghali – 2003. Consequently, it is
ironic that a petroleum company would play
an integral part in providing the necessary
investment which would see the construction
of the largest salt water desalination plant in
South Africa.
The southern Cape town of Mossel Bay has
been hard hit by recent scourges of drought.
Consequently, the town’s water supply source
has dropped to levels of 19%. As part of
a bold, but necessary emergency measure,
the construction of a R200 million salt water
desalination plant was approved and set for
construction in mid-June 2010. When completed, the plant will provide 15 million litres
of desalinated water per day, of which 5 million
litres will be allocated to co-sponsor PetroSA’s
synthetic fuels plant in Mossel Bay.
Along with the construction of the desalination plant, various pipeline infrastructure also
had to be installed to facilitate the distribution of this new supply. Owing to the critical
nature and stringent construction deadlines
inherent in such a pioneering project, various innovative construction techniques were
required to achieve these project outcomes.
Owing to traffic flow volumes and latent settlement often associated with open-cut construction across roadways, it was clear that
a more efficient and appropriate installation
method was required. The close proximity
of existing underground services also further
compounded the issues associated with conventional open-cut construction. Fortunately,
a trenchless installation alternative – which
76 - IMIESA JANUARY 2011
Trenchless Technology Specialists
Our range of services include:
• Pipe Bursting
• Horizontal Directional Drilling
• Pipe Rehabilitation
• Slip Lining
•
•
•
•
Pipe RO[ming
CCTV Inspection
Dewatering
Industrial Pipe Cleaning
•
•
•
•
HDPE Welding
Deep Excavation and Shoring
Underground Service Detection
Close-fit lining: COMPACT PIPE
For more information you can contact us: +27 (0)21 761 3474 F +27 (0)21 797 1151 E [email protected] www.tt-innovations.co.za
TRENCHLESS TECHNOLOGY
ABOVE View of 800 mm-diameter pipe
and reamer ready for installation
LEFT Pipe-ramming slab constructed
prior to placing the steel pipe on the slab
met and exceeded all the client’s criteria –
was identified and approved as a feasible construction solution. The trenchless installation
of pipelines has long been at the forefront of
innovative and pioneering projects within the
construction industry. The myriad of solutions
available under the ambit of trenchless pipeline technology also affords engineers the
opportunity to design for specific applications
using the appropriate trenchless techniques,
depending on design requirements.
The pipeline route was established and
a main contractor was appointed to install
these pipelines using conventional open-cut
techniques. Apart from the greenfields installations, various roads and railway lines also
had to be traversed with this new pipeline.
Horizontal directional drilling was selected as
the trenchless method of choice for the road
and rail crossings. The local roads authority required the new pressure pipelines to
be installed within a sleeve wherever a road
surface was being crossed. This meant
that the 630 mm-diameter class 16 HDPE
pipeline had to be housed within a larger 800
mm-diameter class 6 HDPE pipe. Specialist
trenchless pipeline contractor, TT Innovations,
was appointed to perform the various road
and railway installations .The installation of
both 800 mm-diameter pipes through a range
of existing services provided for a challenging
project. In the instance where the local railway
line was crossed, the 630 mm-diameter class
16 HDPE pipe was installed directly underground, without the need for a larger-diameter
sleeve pipe. A combined total length of 130
m of 630mm-diameter and 800 mm-diameter
HDPE pipe was installed at three different
locations.
At the centre of this new pipeline installation lies the reconfiguration and reuse of the
existing two reservoirs located close to the
desalination plant. Both the 3.4 and 4 Ml reservoirs were allocated for use with this project.
Instead of breaking down the existing structure
to connect the new pipeline to the reservoirs,
an innovative design team identified the potential for using trenchless techniques to mitigate
costly and risky structural alterations to these
reservoirs. Again, specialist trenchless pipeline contactor TT Innovations was approached
and an innovative solution was devised.
Pipe ramming was identified as the most
feasible installation method as this would
allow for the installation of a large-diameter
pipeline underneath the reinforced concrete
wall of each reservoir without creating any
voids around the installed pipe.
IMIESA JANUARY 2011 - 77
- Asset management
data collection
Contact Info:
- Conditional pipe
assessment
Call :
031—579 2240
- GIS mapping
- CCTV pipe
inspections
Web :
- Sonar pipe
Inspections
Email :
www.camjet.co.za
[email protected]
- High pressure
Jetting
- Intrusion Cutting
For those who
want to see what
lies beneath….