bluezone group
  • Newcastle: +61 (0)2 4964 3500
  • Melbourne: +61 (0)3 8720 0300
  • Perth: +61 (0)8 6595 1500
Contracting with SewerSerpent®

Contracting with SewerSerpent®

Why Contract for Sewer Leak Detection with SewerSerpent®?

SewerSerpent® is the fastest way to detect leaks and access immediate, on-site diagnosis of sewer pipelines from sewer laterals to sewer mains. The SewerSerpent® system is a digital technology that enables pipeline condition assessment with pinpoint accuracy, to move beyond the “visual-only” limitations of CCTV. By contracting for sewer pipeline inspection with SewerSerpent®, pipeline asset management can move into the digital age with clear, unambiguous data on the condition of each pipeline. Scan results are produced in digital form for easy storage, review and manipulation.

No Operator Interpretation Required

SewerSerpent® is designed so that different operators will obtain the same results on the same scan location.  Scan results by different operators can be compared over time to assess the condition of a pipeline. This is different to CCTV scans where operator interpretation is required and different operators and different companies may identify different defects. Eliminate the cost and ambiguity that can result from operator variability in training, care and attention with the digital results of SewerSerpent®!

When a SewerSerpent® scan is complete the operator can analyse the results on-site or the results can be analysed by the Asset Management Team depending on the operational procedures of the water utility. The operator or the Asset Management Team can identify which pipeline needs to be maintained or repaired first and make the best use of limited resources for pipeline infrastructure management.

Proactive Asset Management

SewerSerpent® provides a tool that can be assist with pro-active management of pipeline assets. SewerSerpent® scans can be performed rapidly in an area producing a digital fingerprint of the status of the pipeline network. By repeating the scan in a planned way, the continued health of the asset can be assessed over time. Assets which are ageing more rapidly can be identified and targeted for repair and remediation before urgent or emergency repairs are required.



SewerSerpent® produces a digital fingerprint of sewer pipeline assets.

Digital Data Results

SewerSerpent® scan data is in digital form that is easy to review, store and manipulate. SewerSerpent® reports are easy to understand and do not rely on operator or reviewer interpretations. The digital data from scans can be easily stored and occupies minimal space compared with the large data storage requirements for either analogue (tape) or digital video data. High Definition CCTV video data will require even more storage capability. Manipulation of SewerSerpent® scan files is easy as they can be transferred by USB, email or other methods as required to enable sharing within an organisation. Scan files are time-stamped and geo-located using GPS data received at the time of the scan to enable unambiguous identification of files.

 Storage, retrieval and manipulation of SewerSerpent® digital scan files is more efficient than CCTV video data either as tapes or large digital files.
 SewerSerpent® reports are easy to understand and do not rely on operator or reviewer interpretations.

Quality Control of Re-lining and New Sewer Pipeline Installations

SewerSerpent® is ideal for quality control of re-lining and new sewer pipeline installations. 

CCTV inspection is a poor choice for quality control of re-lined and new pipelines because it cannot detect defects due to poor workmanship, poor sealing of pipe joints, misplaced or missing rubber rings and poor solvent cement or fusion joints.

Methods such as pressure test and gas test can confirm that a complete system has no leaks, however, if a leak is detected the exact location cannot be determined. Pressure (leakage) testing, either low pressure air testing or vacuum testing, is only qualitative as pressure losses do not directly reflect water leakage rates. It is used to identify points of leakage and potential pipeline infiltration and exfiltration due to damaged pipe seals and joints. Pressure (leakage) testing depends on correctly functioning and NATA laboratory certified gauges. All test plugs must be appropriately secured in accordance with the manufacturer’s specifications. Analog pressure gauges must be observed and recorded with no direct digital data recording and room for error in recording and interpretation of pressure losses.

SewerSerpent® provides fast and accurate digital data on the condition of the newly laid or re-lined pipeline. This digital data can be easily stored as a baseline to document the status of the pipeline on handover from construction to an asset manager. The baseline data can then be compared with later scan data to confirm that the pipeline is satisfactory when in service. 

 Pressure gauges must be calibrated and certified and are subject to errors in reading and recording, especially if recording is manual rather than digital.

Scope of Work for a SewerSerpent® Scan

Specification for scanning for leaks with SewerSerpent® is straightforward. The attached document provides a template that can be adapted as required for different contracting requirements.

Guideline RFT for Electric Sensing v2 Guideline RFT for Electric Sensing v2 (1202 KB)