This project involves the installation of as much
new heating capacity as possible in an historical
building operated by Hoff Heating Central in
Oslo. The detailed engineering and building of the
plant is to be completed within 18 months. During
this period, all internal structures must be
removed, but the facades must be kept intact.
Also, new structures are to be erected and new
equipment is to be installed.
Since the building is very small compared to the
amount of equipment and piping needed to be
installed, it was a challenging and complex job to
design the plant. Great efforts were made to
achieve acceptable service, maintenance, and
escape areas. Since designing and building were
carried out in parallel, it was also vital to check
for interferences between piping and structure,
equipment, electrical installations, and so on.
Norsk Energi used AutoPLANT for detailed engineering and construction. AutoPIPE was used for
pipe stress calculations. Models have been
exported from 3D Piping to AutoPIPE. Interference
checking was carried out with Explorer, in parallel with pipe-routing.
software not only as a design tool, but also as a
communication and discussion tool. This resulted
in better quality, from the design phase to the end
product, and reduced both engineering and manufacturing costs. ;
The Bentley software made it possible to reduce
man-hours in design and engineering of the plant.
The ability to share 3D information during the
design phase meant that the company used the
PLANT NEW TECHNOLOGY ADOPTION
Sydney Water Bondi Sewage Treatment Plant Reliability Improvement and Modernisation Program
and complexity would be prohibitive in cost and
were considered impossible.
Sinclair Knight Merz
Consisting of existing surface and underground
facilities, the Bondi STP services approximately
500,000 people. The underground excavations
at Bondi STP, cut from sandstone, include chambers and tunnels in large rock excavations for settlement tanks, a major pump chamber, the ocean
outfall tunnel itself, and numerous access tunnels
and smaller chambers.
The 3D model was then used to design the new
plant installation alongside the existing plant, allowing a phased changeover without compromising
capacity. Accurate plant arrangements were generated and annotated directly from the 3D model,
allowing quick production of these key drawings.
The accurate definition of existing tunnels and
plant was performed with 3D laser
scanning. The firm used Cloud Worx for 3D mod-
eling of the key tunnel surfaces, plant, and infra-
structure, while less important areas were
retained as point clouds for reference only.
Traditional site measurements of this magnitude
The use of Bentley Navigator
during design review meet-
ings allowed all members of
the design team to provide
direct input into the design
process, reducing the
potential for design
problems, and rework.
The 3D model was also
used for health and safety
reviews as well as operational reviews. ;