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A working platform with grating shall be provided for inspection of the wetwell and to facilitate the cleaning of the bar rack. The grating shall be of the serrated type, nonslip, without sharp points, made of aluminum as detailed in WSSC Standard Specification Section 05500, subsection II. Safety posts and three level safety chains shall be provided around the bar rack. Safety handrails (three-rail system) and kickplate shall be provided at the edge of the platform on the pump side for submersible nonclog pumping stations. (Design Guideline DG-08 § 5.6, dated August 2006)