CCTV Pipeline Inspection & Condition Assessment

NZ Lining provides CCTV pipeline surveys and condition assessments for stormwater, wastewater and pipeline rehabilitation projects. Using modern inspection equipment, our team can assess pipelines from 50 mm to 2000 mm in diameter, identify defects and provide accurate condition information to support maintenance and rehabilitation decisions.

Our operators work in accordance with New Zealand pipeline inspection standards, and where defects are identified, NZ Lining can also recommend suitable rehabilitation solutions.

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Pipe Bursting

Pipe Bursting is an effective trenchless method to replace damaged or undersized sewer, water and gas lines.

This method requires minimal excavation and reinstatement at either end of the pipe section in addition to lateral or branch locations. Service connections are excavated, and the laterals are disconnected prior to starting the bursting process. This precautionary measure is to ensure that laterals are not damaged by the bursting process. A closed-circuit television (CCTV) inspection is carried out once the operation has been completed to confirm that no damages have been caused during this process.

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Lateral Lining



Lateral Lining

The NZ Lining system provides a cost- effective rehabilitation technique for small pipelines of 50-100mm in diameter allowing you to repair pipes by relining them, as opposed to replacing them. NZ Lining offers the best option to rehabilitate small diameter pipes and keep them operating efficiently without using traditional methods of repair that involve digging up yards, driveways and streets. Our liner will eliminate root intrusions, ground water infiltration and restore the structural integrity of the pipeline.

We can install liners in sewer pipes, drain pipes, swimming pools, downpipes and duct work - virtually any size or shape of conduit from 50 mm to 100 mm in diameter. Based on the existing conditions, a liner tube is impregnated with a polyester/epoxy resin. Standard liner tubes are used for straight pipes and more flexible tubes are used for pipes with sharp bends, angles and transitions from smaller to larger diameters.

Rehabilitation & Repair

Cured in Place Pipe Lining (CIPP)

We offer three methods to repair and renew deteriorated wastewater, stormwater and pressure pipes using our trenchless Cured in Place Pipe (CIPP) lining. Factors effecting the selection include pipe specifics, site conditions, environmental sensitivity, and impact on residents and public.

The CIPP liner is designed according to the following factors:

+ Pipe condition, depth & ovality

+ Pipe Loading including traffic loading, hydrostatic loading

+ Chemical composition, and temperature of effluent, surrounding soil

Our key staff technical and field expertise and wide range of resources and equipment allow us to successfully tackle complicated and challenging projects on pipes ranging in diameter between 100mm to 1,500mm.

Factors taken into consideration when designing the liner and selecting the appropriate products and method include pipe condition, ovality, traffic and other live loading, pipe depth, water table level, chemical composition, and temperature of effluent, surrounding soil, site environmental sensitivity and impact on residents and public in the project area. Our key staff technical and field expertise and wide range of resources and equipment allow us to successfully tackle complicated and challenging projects on pipes ranging in diameter between 100mm to 1,500mm.

Lateral Junction Repairs

NZ Lining provide a trenchless point repair known as a Lateral Junction Repair. Sealing the junction between the lateral pipe connection and the main line is an integral part of the sewer rehabilitation. This stops any infiltration/exfiltration or root intrusion.

The process involves installing a resin impregnated branched patch that is cured in place by ambient cure/heat or UV curing. The lateral junction repair (LJR) is compliant with the international standard ASTMF2561- 11. NZ Lining have the expertise and resources of serval LJR We have the capacity to install LJRs on pipe mains ranging in diameter between 150mm to 900mm.

The same trenchless process of Lateral Junction Repair is also used to seal the junction between a lateral pipe and a newly CIPP lined main to prevent water or roots coming through the lateral from going between the pipe and liner. NZ Lining have the expertise and resources of several LJR systems utilising ambient cure, heat cure and Ultraviolet cure lining techniques. We have the capacity to install LJRs on pipe mains ranging in diameter between 150mm to 900mm.

Lateral Lining

Our CIPP (Cured in Place Lining) system provides a trenchless cost-effective solution to damaged or faulty lateral pipes in industrial, commercial, and residential settings. Our rehabilitation system renews and repairs faulty pipes by relining them in place, as opposed to replacing them. In addition to the cost saving, this method reduces the disruption, environmental impact and saves time, lateral lining can be completed within a few hours.

Our lateral lining service is compliant with the international standard ASTM F1216-16.

Manhole Rehabilitation

We offer several rehabilitation and renewal systems for manholes and underground wastewater structures including sealing of leaks, structural repairs and enhancement and application of protective coating against corrosive chemical attack and inhibiting bacterial growth.

Depending on the existing substrate NZ Lining offer three different coating systems being:

+ Cementitious Coating

+ Epoxy Coating

+ Complete Manhole Lining

Our full service brochures

To read more about our services & processes, download our full service brochures below.

CCTV
CIPP
Lateral Junction Repair
Manhole Rehabilitation
Pipe Bursting
Lateral Lining
NDSR