CEMP-E
EI 11C201
1 March 1997
rails and traveling overhead hoists will be provided in large pump station buildings where use of
temporary or portable hoisting equipment is not practical for maintenance, repair, and equipment
removal operations. Sufficient headroom must be provided to allow equipment being removed to
clear other equipment. A removable hatch, hinged hatch, or removal roof panel may be
considered for removal of vertical long stem equipment. Split floor levels will be avoided. Where
different floor levels are necessary, standard stair design will be used and safety railing provided
in accordance with OSHA standards.
9-4. MECHANICAL EQUIPMENT. Typical pump station layouts are shown in figures 9-1 and 9-
2. Valves, meters, gauges, and controls shall be located to be accessible without use of ladders
or chain wheels. Use the structure's walls to support heavy valves and piping. Locate seal
water valving and appurtenances, such as solenoids and pressure-regulating valves, rotameters,
and isolating valves, on a wall adjacent to the pump and supply the seal water to the pump in
copper or stainless steel piping. Floor drains and pump gland drains will be provided in above
ground stations. Sumps and sump pumps will be provided in dry wells. To avoid plugging of
pipes and valves, pump discharges will not be connected to a manifold or header from
underneath and check valves will not be located in a vertical position.
9-3
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