At some stage after installation of the 30000ltr GRP Tank below ground, a crack developed in the base resulting in water ingress that filled the tank over a period of less than 10 hours. We were asked if we could resolve the issue to avoid the requirement for full excavation, removal and replacement of the tank.
Over and above the fact that the tank was filling at such an extreme rate, there were a number of other difficulties with the project:
- Access was limited to a single operative due to the confirmed space nature of the works.
- The GRP structure was not solid and due to lack of compaction or wash out of surrounding concrete, flexed under pressure of water and movement of operative.
- The site was a secure unit preventing continued pumping set up through doors. Internal drainage required to be utilised.
- 24 Hour continuous pumping was necessary to control the ingress of water whilst we sealed the area.
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Inverness Search and Rescue
There were a number of stages of process necessary to resolve this issue: