Buried telecom ducts made of HDPE (or other plastic variants) are non-metallic and undetectable by general purpose pipe & cable locators.
Telecom duct laying or water pipelines are generally non-metallic and the following issues are commonly faced during projects.
a. Ducts laid in major cities or towns laid by direct burial or HDD are not permanently marked and information on route of buried nonmetallic ducts is not known to the project teams.
b. While backfilling during telecom pipe laying, many times the telecom ducts get pinched or debris are left inside the duct causing duct blockages – and leaving Outside plant OFC teams unable to install optical fiber cables inside the buried ducts.
The Advanced PLB duct route tracing system featured is a proprietary product solution designed specifically to achieve the following objectives:
a.Detect and trace route of non-metallic pipes / ducts with precision
b.Pin point exact point of blockage in ducts to allow finite digging to repair route, where required.
The system comprises:
a. A software driven locating receiver that guides the user through steps necessary to locate exact route or blockage in duct
b. Traceable duct rodder designed for use in telecom ducts of 26mm inner dia or higher, up to lengths of 300 meters (1000 feet).
c. Miniaturized sonde frequency transmitter, operating at low frequencies, for use in small dia telecom ducts (or larger pipes) which allow the sonde to pass through ducts including bends.
d. Transmitter to energize the CTRAK traceable rodder.
1. Quick detection of route of lost telecom ducts.
2. Confirmation of depths at which ducts had been laid, allowing as-built maps to be updated.
3. Detection of blockages in ducts with precision allowing the field teams to dig at a specific point, especially important in major city or town environments where random digging is not possible.
System Usage description is as follows:
The SONDE operating at 512Hz is attached to the CTRAK Traceable Duct rodder unit & is pushed inside the non-metallic HDPE Conduit or any other line until it stops due to blockage in HDPE pipe or because of entry into the next manhole. The CTRAK contains a 1 sq. mm tracer which is energized by the Line exciter at 8/16/32 or 64 kHz. The digital receiver is then set to receive frequencies at 8/16/32 or 64 kHz to trace direction and route of line in the Line Tracing Mode. Once the trace is completed until the line trace starts to fade, the receiver setting is changed to the Sonde Tracing Mode to receive 512Hz frequency transmitted by the SONDE or any other customized frequency which can then be used to pin point exact point of blockage in HDPE conduit or manhole location.
Please refer features for seeing visual illustrations of steps to be followed to achieve above objectives.