04-12-2006 Council Agenda - Laserfiche WebLink

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City of Little Canada, MN 4 coating integrity. KLM will inspect the roof, roof structure, all appurtenances such as vents, manways, and ladders, the tank shell, and the bowl. KLM will be responsible to provide a safety ladder and a lifeline in the roof manway, for the interior inspector, at all times. The inlet pipe or wet riser is excluded from the inspection, unless otherwise written into this agreement. The inspection and inspection reports will be performed in accordance with AWWA M 42 Inspecting and Repairing Steel Water Tanks, Standpipes, Reservoirs, and Elevated Tanks for Water Storage, American Concrete Institute (ACI) 201.1R -95 Guide for Making a Condition Survey of Concrete in Service and this proposal. KLM Engineering, Inc can also perform the following types of inspection. They are included as part of this proposal. ROV Seamor Inspection KLM plans to utilize a two -man crew and a Remote Operated Vehicle (ROV) to perform the inspection. This inspection is used primarily when performing warranty and 5 year anniversary inspections. KLM plans to inspect the elevated water tower with the float on the upper portion (if necessary) and ROV all areas below the surface. KLM will provide NACE Certified Coatings Inspectors, with one or both of these individuals being an AWS welding inspector, whom are properly trained and qualified to perform this type of inspection. KLM proposes to utilize a remote operated vehicle for the inspection of the water tower. This will enable each tank to be inspected in one day. In order to perform a ROV inspection, the city would be required to have the water at or near the high water level (HWL) at the start of the inspection. KLM inspectors will insert and inflate a sterilized rubber rail into the tank interior, for the interior inspection of the roof, roof structure, and all appurtenances such as vents, manways, and ladders. Videotaping will be performed with an underwater camera, which will show the coating deficiencies. The camera will be disinfected in accordance with AWWA. KLM will be responsible to provide a safety ladder and a lifeline in the roof manway, for the interior inspector, at all times. The inlet pipe or wet riser is excluded from the inspection, unless otherwise written into this agreement The inspection will be performed in accordance with AWWA M 42 D101 -53 (R1986) Standard for Inspecting and Repairing Steel Water Tanks, Standpipes, Reservoirs, and Elevated Tanks, for Water Storage and this proposal. 6