Permanent Electrical Leak Monitoring (PELM) System
The PELM System is an electrical monitoring system which contains permanently buried sensors that measure and locate penetrations throughout a geomembrane-lined area. This system provides our clients the ability to monitor their impoundment on an as-needed basis. A liner integrity survey from the PELM System can be self-performed daily, weekly, monthly, or yearly by the client or a BLD technician. Prior to installation of the geomembrane, stainless-steel plate electrodes will be permanently buried in columns and rows creating a grid system pattern throughout the entire cell. Stainless-steel source electrodes will also be permanently buried. If feasible, surveying the location of each plate and source electrode by a third party GPS land surveyor may be required for leak detection accuracy. All electrodes will be attached via insulated stranded copper wires that are all connected to a PELM Station.
At the PELM Station, all data will be collected by using an earth resistivity meter. After data is collected, prominent, reliable results are analyzed, and is presented through a custom-made leak detection software. Further investigation for any suspect areas may require additional survey methods to pinpoint the source.
A custom-made leak detection software displaying a contour map of a simulated leak signal
A custom-made leak detection software displaying a linear graph of a simulated leak signal
Various types of custom-made leak detection software can be created by our software design team depending on the application. Linear, 2-dimensional or 3-dimensional software analysis programs and tools may be generated per client requirements.