Diving Services Inc. has an extensive inventory of dedicated potable water inspection and cleaning equipment. Our personnel, and expertise enable us to provide a broad range of underwater services for complete potable water system maintenance. All of DSI's well trained and commercially certified diving staff and associated in-tank equipment is fully disinfected according to AWWA Standard C652-92.
Old and new methods
Tank inspections can be accomplished by one of three methods: draining, dropping in a Remotely Operated Vehicle (ROV), or sending in a diver.
Draining
The oldest method of inspecting water reservoirs is to drain them. The reservoir is taken off-line and emptied, wasting valuable water and limiting operating capacity. Workers then enter the reservoir to clean the floor and perform maintenance by hand. For steel tanks, draining can lead to damage of the interior coating. Workers walking inside a tank generate a substantial risk of contamination and are subject to confined space regulations. Concrete reservoirs often suffer structural damage from the expansion and contraction that occurs from moving large quantities of water. This method requires extended down time, and is the most expensive.
Inspections
Diving Services utilizes a thorough inspection method that has been developed to detect and document all important issues and problems. Full-time, two-way voice communication with the diver is maintained and is captured on the video record of the inspection. Our specialized equipment enables the customer to monitor and participate in the inspection by giving the diver instructions while he is inside the reservoir. The video monitors are on during the entire cleaning and inspection process.
ROV Inspection
Remotely operated vehicles (ROV) are useful for assessing the condition of a reservoir's interior without contamination, downtime, or confined space concerns. However, ROVs cannot effectively clean, remove debris, or perform repairs.
Real-time video
Divers use a helmet mounted, high resolution camera system coupled with high intensity lighting to inspect all surfaces and interior fixtures. Client representatives are invited to observe the dive on live video feed and give specific instructions that pertain to their individual requirements or concerns.
Commercial Hard Hat Divers
Commercial divers that use the proper equipment are the best choice for overall tank maintenance. Divers perform the work while the tank remains in service and full of water, eliminating the high cost and dangers associated with normal tank maintenance. A diver can do what ROVs cannot, like repairing cracks or coating failure, cleaning the reservoir, or replacing corroded fixtures.
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