Tafjord Dam Case Study


In the early 90’s cracks appeared that resulted in a significant amount
of leakage into the main body of the structure, such as the pump room
and technical rooms. Due to the nature of the structure being so wet,
the cracks were undetectable.
Many of the affected areas were located at the
base of the structure, some 600 metres below the surface of the water


The water ingress problem was in an area under very high water pressure.
Undetectable amounts of cracks were present in the structure.


The MPS system is not an, ‘off the shelf’ product. As each structure has its own set of conditions and environment, it
has its own cost.
The MPS system is a unique innovative first world technology with a simple installation technique.
However, the largest component to cost is the cost of labour and the access to site. There is no need to undertake
expensive excavations as the AOP system is applied entirely from within the inside /dry side of the structure. Hence the application of AOP is comparable in cost to a traditional temporary solution, but considerably less expensive than a traditional
perceived permanent solution. In many cases, there are no other engineering alternatives to the AOP


All treated areas of this installation reached the target of 92% paint dry relative humidity or better and have stayed
dry ever since.
Once the structure was dry, all the cracks become detectable. The cracks were repaired using conventional sealing
methods. The old EPS system is now holding back the main body of water penetrating the structure.

AOP system

The AOP system has achieved DTI approval and we now have the CE mark. We are also compliant with all EMC
related regulations and restrictions.
The AOP system has approval for installation in sensitive areas and has been tested for emissions and interference
in electronic sensitive areas.
The AOP is an evolutionary technology based on an accepted theory. It gives new life to existing brick, masonry and
concrete structures avoiding expensive reconstruction and has a broad field of application in new concrete
structures. The “state of the art” methods in use in the building industry today can be characterised as temporary
solutions to a problem for which there is no apparent cost effective permanent solution. The AOP system provides a
permanent solution. The AOP system is utilised for transporting water encapsulated within the capillaries out of
structures, as well as permanently preventing the penetration of water into structures. A control unit produces an
extra low voltage electrical charge, which is passed through electrodes in the form of probes or wires strategically
placed within portions of the walls and /or floors that are wet.

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