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CASE STUDY
PROJECT
Installation of ECS Lining System over top of failed HDPE containment without lifting tanks or interrupting service.
COMPANIES INVOLVED
Western Engineered Containment (WEC)
Petronas Canada
THE CHALLENGE
Restore full confidence and integrity in existing secondary containments, while eliminating the costly need to remove existing tanks, failed liner, or backfill. The ECS retrofit approach allows technicians access tight and congested areas, where traditional sheet liner welding techniques would be impossible, and without any shut down or interruption.
There have been repetitive failings in the HDPE liner systems caused by pile boot failures and excessive settling. ECS retrofitting is the found solution to this prevalent issue. See the link below for the testing and research findings comparing the strength of the two methods of attachment.
Piling Boot Failures? Finally, a Permanent Solution! – Western Engineered Containment
INSTALLATION
The ECS Retrofit Solution
- Technicians remove any anchor points such as mechanical connections or banding attaching the sheet liner to the containment berm and piles.
- Any pile boots are cut down to the same height as the existing backfill, and any liner attached to the berm with a top mount liner attachment are cut down to the same height as the backfill and removed or relocated.
- Once all existing liner is the same height as the backfill, technicians prep any piles that will be spray attached. We use a blast media to bring all metal to a near white finish while leaving a profile for proper adhesion of the ECS primer. The pile is prepped and sprayed a minimum height of 6”, resulting in a much stronger attachment point when compared to a mechanically attached ½” stainless steel band.
- Technicians then deploy our robotically applied ECS pre-sprayed panel and roll systems throughout the entirety of the containment, and spray attach the ECS sheets to any prepped and primed areas providing a seamless liner system.
- Once all anchor points are attached and all ECS panels have been seamlessly fused using ECS Fusion top caps, an unmatched and comprehensive QC package is prepared consisting of accurately recorded dates of pre spray sheets manufacture, batch numbers of all chemicals utilized, installation dates, as well as each sheet placement/location.
CONCLUSION
Instead of completely ripping out the old pile boots, liner, and having to lift tanks, you can have a cost effective and retrofitted lining system installed overtop the existing liner. Less waste, less hassle, and a seamless liner system providing maintenance free containment for years.
WEC offers a 15-year warranty with our ECS liner installations that is unmatched in the industry.
About Western Engineered Containment
Western Engineered Containment (WEC), is a full service primary and secondary containment company, specializing in poluria spray-in liners. WEC supplies and installs all types of HDPE, LDPE and geotextiles throughout Western Canada. In addition, WEC manufactures and installs its own line of steel berm walls. With our Spray-in Liner division, WEC is the only containment company in Canada to implement the use of robotics. This provides industry leading tolerances with QA/QC and a superior deliverable with every spray-in liner. For more information visit Western Engineered Containment
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