Lift station

There are several drainage mechanisms are employed at petroleum and related facilities - surface runoff or grading, spill containment (diking), gravity sewers (oily water and sanitary) and pressurized sewer mains, and lift station collection sumps. 

An adequate drainage system should be provided for all locations where a large amount of hydrocarbon liquids has the possibility of release and may accumulate within the terms of the risk analysis frequency levels. Normal practice is to ensure adequate drainage capability exists at all pumps, tanks, vessels, columns, etc., supplemented by area surface runoff or general area catch basins. Sewer systems are normally gravity flow for either sanitary requirements or oily surface water disposal. Where insufficient elevation is available for the main header, lift stations are installed with a forced pressure outlet header to a disposal or treatment system. 

A Biocube off-gas treatment system installed at a domestic wastewater pumping facility in June 1995 cost 15,000. The pumping facility treats approximately 200 m of water per day (D13550C, pp. 1-4). At a sewage lift station in Miami, Florida, a Biocube unit was installed at a cost of 90,000 (D221465, p. 1). 

N-4 (1300-N) EDB Received steaai blowdown froai 8 Reactor steaai generators containing low levels of radioactive activation and fission product. Also received water fron 8 Reactor lift station and possible contaaiiiuited low-point drains. A steel-lined storage pond with a 650,000-gal capacity. 

N lift station to the 116-N-l crib and trench. The improper connection caused the 119-N drain to become pressurized whenever the 105-N lift station pumps were operating. 

Pipelines that discharged directly Into the 116-N-l crib and trench through a 16-m by 3.7-m (52-ft by 12-ft) concrete weir box Included an underground 91-cm (36-1n.) main effluent line from the 105-N lift station, an underground 30-cm (12-1n.) effluent drainline from the 109-N steam generator building, and a 15-cm (6-1n.) effluent drain line from the 109-N floor drains. 

At various times, the EDB also received radioactive wastes from the N Reactor lift station. Since the N Reactor was shut down In 1987, water has been maintained In the EDB [approximately 2,800,000 L (750,000 gal)] so that the bottom sludge layer will not become exposed. Subsequent drying of the sludge could expose receptors to airborne exposure from contaminated particulate matter. Filtered river water has been added as needed to maintain the water level. Documentation of the amount of water added to the EDB has not been maintained. There are no documented releases associated with the unit (DOE-RL 1990). 

N lift station underground storage tank Corridor 22 unplanned release. 

March 8, 1978 (UN-lOO-N-3) - A leak was detected In the spacer transfer line. The first Indication of the leak was the appearance of a 1.2-m (4-ft)-d1ameter by 76-cm (30-1n.)-deep sinkhole between the 105-N lift station and the spacer storage silos. Excavation of the sinkhole area revealed a crack In the 7.6-cm (3-1n.) reinforced plastic pipe approximately 3.4 m (11 ft) below grade. It Is estimated that approximately 1,400,000 L (360,000 gal) of Irradiated N Reactor fuel storage basin water entered the ground. Estimated radionuclide releases to the soil were Co (70 mCl), "Sr (80 mCl), Cs (250 mCl), CePr (140 mCl), and Pu (0.4 mCl). An unknown amount of soil was removed and disposed of at the 200 Area burial ground (OOE-RL 1990). 

N-lO Sewer System. The 100-N sewer system was constructed to replace five 100-N Area sewer systems. The system includes a two-pond lagoon facility, a sewer trunk line and other pipelines, three lift stations, service access holes, and associated sewer system instrumentation and annunciation capability. Five sewer systems were replaced (DOE-RL 1990) ... 

N Lift Station Underground Station Tank No. 2 diesel oil. 5,000 gal steel tank which has been removed. No soil contamination found during tank removal. 

N-10 100-N Seuer System Sanitary seuage. Central seuer system with three lagoons, sewer trunk line and other pipelines, and lift stations. 

This system collects raw waste from lavatories. If not discharged to the unit limit or lift station for disposal, it is routed to a septic tank or leeching field. 

Lift station This is an underground struaure (e.g., a sump) used to pump effluent to a higher elevation, which may be in a gravity sewer system, or to the battery limit. 

Variations of pipe fittings, catch basins, sewer boxes, trenches, sumps, and lift stations are only a sample of what a plant layout designer encounters in the development of an underground piping system. Available vendor data for fittings, catch basins, and sewer boxes must be used as a reference. Typical cast iron fittings are shown in Exhibit 13-39. The list of labels for these... 

Waste water Lift stations Capacity, seismic design level... 

A - GMF M-lOO ROBOT W1T KAREL CONTROLLER B - GMr S-IO ROBOT WITH A KAREL CONTROLLER C - PRATT VHITNEY MACHINING CENTER VlTH FANUC CONTROL D - PRATT VHITNEY LATHE WITH FAPT AND FANUC CONTROL E - ALLEN-BRADLEY expert VISION SYSTEM WITH TVG CAMERAS F - MITUTOYO COORDINATE MEASURING MACHINE G - ALLEN-BRADLEY PLC 5/25 H - MILL AND LATHE LIFT STATIONS I - palletized mill and LATHE STATIONS... 

Figure 4. Excerpt of a ladder logic program for the lathe lift station.

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