Specifications include, but are not limited to: 2.2.3 Interior Tank Cleaning and Surface Preparation A). All tank surfaces shall be cleaned free of contamination and scale and properly prepared before the commencement of repairs. B). Prior to the Contractor entering the tank for repairs, MES will perform initial high-pressure water cleaning of the interior surfaces to remove heavy/loose deposits of scale. MES will remove sludge, scale, and debris from the tank floor as a result of initial cleaning operations. C). Additional cleaning and/or surface preparation may be required by the Contractor. The Contractor shall be responsible for the removal of all remaining residuals and surface preparation so that the interior surfaces are suitable for inspection and meet the manufacturer's requirements for the application of corrosion barrier repair materials. The Contractor is responsible for the selection and implementation of the appropriate surface preparation methods in accordance with industry standards and manufacturer recommendations. D). The Contractor shall conduct necessary evaluations and/or testing to ensure repairs to the corrosion barriers will adequately adhere to existing substrates. Copies of all evaluation and test reports shall be submitted to the MES Contract Monitor, or designee. E). Waste, debris, sediment, scale, residual water, etc. generated by the Contractor from interior tank cleaning and preparation shall be deposited in an adjacent holding tank provided by MES which will be located outside and adjacent to the containment dike. MES will be responsible for testing, transportation, and disposal of the waste material. F). Payment for fiberglass tank interior cleaning, surface preparation, and surface evaluation shall be lump sum in accordance with Schedule of Prices Item 2 on the Price Proposal Form. 2.2.4 Tank Repairs A). The Contractor shall be responsible for identifying and repairing damaged portions of the corrosion barrier on interior walls and roof of each EQ tank. Repairs shall be made in accordance with applicable industry standards and manufacturer recommendations. B). Repairs to the corrosion barrier shall be performed to reestablish a corrosion barrier thickness to no less than 120 mils in all locations, in accordance with the original tank design. The materials utilized for repairs (resin, veil, etc.) shall be identical to those used in manufacturing the original tanks. However, if identical materials are not available or newer materials are available which may provide additional benefits, the MES Contract Monitor will consider submitted alternatives. In all cases the materials used for repairs shall be suitable for the environment in which they will be used and compatible with existing infrastructure.
