Sump pump, installing

Install an enclosed wash rack for equipment in an adjacent structure with drain connected through a sump (pump installed) for disposal of wash water from tank and equipment. Wash rack must have a cleanout trap for removal of soil and other debris from equipment. 

The arrangement and dimensions indicated in Figure 3-62 or Figure 3-63 are satisfactory for single or multiple pump installations. (For more details, refer to Reference [17]). A few key points in sump-pump relationships for good non-vortexing operation are ... 

Figure 1. Sulfur concrete sump for installation in the zinc electrolyte pumping circuit.

Catnsl Purge Syatem. A flow of 100 gpm is maintained through the. canal to avoid an excessive build-up of radioactivity and turbidity A solenoid valve, which automatically closes in case of power failure, is installed in the weir waterline at the inlet to the rabbit canal. This provision obviates the possibility of flooding the canal sump when an electrical outage causes the canal sump pumps to fail. ... 

Figure 5 shows a high-pressure helium pump installed together with a forepump in a vacuum-insulated sump. Vacuum-insulated flex lines are used to connect the sump to the storage reservoir. 

The sump pumps must have periodic tests which adequately indicate their actual discharge capacity in an emergency situation. Pump head/flow curves may be used in conjunction with reduced flow testing if full flow testing is not possible. The curves to be used must have been previously verified by testing at the full flow level or have been provided by the vendor for the specific model/type installed. Pump test procedures must identify test acceptance criteria (i.e. acceptable head/flow curves and conditions). 

The DC-motor floodout calculations in RTR-2637 do not take credit for water removial via the sump pumps. The ROMP requires seismic qualification of the submersible sump pumps, their associated piping, and power and control circuitry prior to startup. The report, "Basic Data for Project S-4309," Revision 1 (Reference 10), requires seismic qualification of the level controls and power supplies for the submersible sump pumps. Modifications that allow the assumption of survivability for 5,000 gpm of submersible sump pump capacity following a DBE were installed during this project. 

A submersible pump was installed within the sump and used to remove the accumulated LNAPL and water from the sump, and to pump it to a storage tank for separation. A vacuum pump created suction, which increased the recovery rate. The effect of vacuum assistance on product recovery rates is illustrated in Figure 12.20. 

The TPU eqnipment cost was 45,000 with an additional charge of 18,000 for consnltation after the initial installation. SEMATECH stated that the consulting fee wonld probably not be necessary for a commercial unit. Installation costs of 51,080 included gas hues, water hues, wastewater sump, booster pumps, a water meter, rotameters, alarms, etc. This cost also included the facilitation of the screening and modeling test eqnipment, the facilities water system, and all engineering and technician labor required. It was assumed that installation costs wonld be significantly lower for a commercial unit (approximately 20,000) (D17789D, pp. 44). 

Cooling system operators are required to install a bleed-off in the recirculating line between the pump and the magnetic device to remove suspended minerals and dissolved solids from the system, and are further required to install a constant bleed-off in the cooling system sump or lowest point to keep mud and loosened scale from accumulating in the system. 

Always install a flow assembly from the discharge side of the recirculating pump to either a (lower pressure) cooling water return line, or the tower sump. The flow rate through the flow assembly should be 3 to 4 gpm. 

In the late 1980s pneumatically driven diaphragm pumps were gaining wide acceptance in handling acidic-contaminated water streams in a major chemical complex. These plastic pumps could be installed by sumps and handle a wide variety of conditions. Versatile plastic diaphragm pumps had the advantages of ... 

Pulsed extraction towers have been used throughout the industry for many years. Pulsation is generated at the sump of the column using special piston pumps or compressed air. Extensions for phase settling are installed at the bottom and head of the column. The design of the column is rather difficult since back-mixing will occur with increasing diameters. 

Forced-circulation reboilers are similar to vertical thermosiphon reboilers, but do not depend on the natural thermosiphon action, and commonly operate at high circulation rates. The pump replaces the level in the reboiler sump as the driving force that sets rehoiler circulation. Heat transfer is mainly by sensible heat, often followed hy nucleate boiling. Additional boiling occurs when the heated mixture is flashed at the reboiler outlet. Forced-circulation reboilers may be installed horizontally or vertically horizontal units are often easier to clean, but consume more plot space. 

Flaker c/s standard single roll, feed pan, knife and holder, variable speed drive FOB cost 175 000 at drum surface area = 2.5 m with n = 0.60 for the range 0.1-18. L+M = 2.6-2.75. L/M = 0.3-0.36. Alloy cost factors c/s, X 1.00. Prilling tower installed tower, spray unit, scrubber, pump, sump, ductwork and piping excluding air pollution control devices. PM cost = 14 250000 for a prilled capacity of 1000 Mg/d with n = 0.57 for the range 300-1200. Factor include wet scrubber for the vent gas, X 1.22. 

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