Crawler Vac Service
Reservoir Sediment Removal
Aquavision Services reservoir sediment removal provides the next level in reservoir maintenance. Deploying our remote crawler vac unit, we are able to remove sediment from the reservoir floor eliminating traditional human entry into a potable water source.
All functions of the crawler vac are controlled remotely from the proximity of the entry hatch and NO CONFINED SPACE entry is required.
The crawler vac service is generally used in the case where the reservoir cannot be shut down during any maintenance or routine cleaning. Our service eliminates any possible disruption to distribution and any loss of fire protection storage required in the reservoir.
Our service has provided excellent results in removing sediment buildup and in some cases, removing the unknown creatures that infiltrate these storage tanks.
What does the Crawler Vac service involve?
What is the capability of the Crawler Vac?
Our experienced Crawler pilot and crawler vac ... and a water system operator ... is all that is required. The Crawler Vac is remotely controlled within the proximity of the entry hatch, eliminating any CONFINED SPACE ENTRY.
The Crawler Vac has the ability to be deployed in various reservoir structures. The main requirement is that there is accessibility for additional topside equipment placement (trash pump / small generator / vac hose.
What about confined space entry procedures?
Access to CONFINED SPACE with NO confined space entry ... all the work is done from topside within the proximity of the entry hatch.
Does the reservoir need to be shut down?
Crawler Vac projects DO NOT require the reservoir to be taken offline and there is NO disruption to continued service.
Contamination concerns?
There is NO HUMAN entry into the reservoir and with extensive unit sterilization ... there is no possible chance of water contamination. Our equipment is ONLY for potable water use.
How long does it take to vac a reservoir?
It is totally related to the size of the reservoir, accessibility, and sediment depth that dictates the time onsite. Most estimates are based from the results of an initial ROV inspection to determine the time required.
What limitations are there with the Crawler Vac?
Due to the rage of structural reservoir types, we are only able to access reservoirs that are either in-ground concrete, partial above ground concrete or above ground concrete.
Configurations of floor sloping and different level floor tiers limit the abilities of the crawler..
Steel tanks with ridged floor panels are not possible.
Costs related to alternate services?
We do not condone Divers going into the reservoirs for the same purpose, Our service is not the end all be all and in different situations, we recommend an alternate choice.
The Crawler Vac eliminates the extra costs associated with conventional dive services ... eliminating associated labor, confined space HUMAN entry and disruption to service.
What is the recommended frequency of cleaning?
There is no set time that is laid out for cleaning a reservoir, The only reference to this is based on "best practices" of maintaining an acceptable quality of drinking water and on the recommendation of the local Health Authorities. For the most part, every 5 years has been an acceptable practice, providing there is evidence of maintaining the recommended standard water quality.
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