UTILITY PIPELINE RECONSTRUCTION BY NO-DIG METHODS: KEMIA GMBH REPRESENTS AND PROMOTES BONEX KFT HUNGARY IN OVERSEAS MARKETS.
Advantages of the NO-DIG technology have been clearly demonstrated in the past 25-30 years as opposed to pipeline reconstruction works with full open exposure, and as a consequence:
• NO-DIG technology selection of offers has been continuously expanded;
• technical, technology and quality assurance level of the procedures was enhanced;
• the market share of NO-DIG solutions grew.
Key NO-DIG benefits in the entire project process include the following.
• preparation and design of the reconstruction is more straightforward;
• shorter licensing procedure and less need for the involvement of expert authorities.
• minimum disturbance of surface traffic (road, pedestrian, cargo delivery);
• tearing up of pavement, necessary earth works, propping etc. is only a fragment of the needs of an open trenches;
• risks to alien (crossing) utility lines at the execution phase is negligible;
• no large volume demolition and hazardous waste are generated,
• frequent subsidence of pavement (road bedding) following open trench exposure will be omitted,
• implementation time of execution works is substantially reduced,
• the amount of environmental exposure is reduced,
• taking all this into account direct project costs may be about 15-25 % lower than those in open trench systems.
Deteriorated public utility networks cause massive and unexpected troubles both to operators and to the society worldwide.
Main causes of the impaired technical conditions include:
• natural wear and tear, obsolence,
• neglected maintenance works, inappropriate reconstruction schedule,
• increased surface traffic,
• qualitative and quantitative changes in the transported media.
Necessary (rehabilitation) interventions may include:
• cleaning, maintenance,
• local troubleshooting,
• complete pipeline (network) renovations, preserving the original structure,
• pipeline reconstruction, replacement, by demolition of the original structure.
These procedures use now typically tranchless (NO-DIG) technologies – with the exception of exposed pipeline replacements – the most important of them being the NO-DIG technologies using plastic liners.