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Existing steel tank upstands on this site were not wide enough to facilitate a traditional bolted connection.
OPW’s UK engineering team created a bespoke chemical bonding system to attach GRP Fibrelite tank sumps to the existing upstands, eliminating the need for additional work and expensive adaptor plates.
Shell required a retrofit watertight solution to replace previously installed tank sumps / chambers fitted to existing tank upstands without replacing the tanks.
The main problem for this installation was that the old tank upstands were too small for the traditional bolt down tank sumps/chambers.
Bonding the chambers directly onto existing tank upstands saved Shell time and money on installation while providing a fully watertight chamber system, which will endure year after year.
The site team conducted a vacuum test onsite after the install to ensure water tightness of the chambers.
The client now has a long-term access solution that requires minimal maintenance and will continue to perform year after year, withstanding harsh weather conditions and heavy traffic from emergency vehicles while enabling quick safe access for monitoring and maintenance. The customer is now considering replacing all the trench covers over the next two to three years.
The Perfect Watertight Solution