Pumps locations

Specimen Location Pump impeller and shaft bushing... 

Specimen Location Pump housing, quench-system water supply... 

When a suspect section is located, pump it out, isolate it from the pump and measure the pressure rise at regular time increments. A steady pressure rise indicates a real leak. A leveling off of pressure rise with time indicates a virtual leak. 

When a plant is located near a river or large body of water, cooling water can be drawn off at one location, pumped to the heat exchangers, and discharged downstream in a river or to another location in a lake, bay, or ocean. It is customary to filter this water, but not treat it to remove salts and similar impurities. 

Review operating manual and drawings Trace process lines Locate pumps, exchangers, and vessels... 

Location Pump discharge APT-1 Pump discharge APT-l-PHE-1 PHE-l-IPAT IPAT-APT-1 Pump discharge APT-l-PHE-2 PHE-2-D.T. D.T.-APT-l PHE-2 out-APT-2... 

Locating pumps inside a concrete diked wall is common in many proce.ss plants. The apprtxich shown in Exhibit 15-35 shows the pump block. set at the. same elevation as the dike. With thi.s configuration, the... 

Splitting pressure drops so as not to lower the pressure too abruptly, and locating pumps (which raise the pressme level) far enough upstream in the circrrit. 

Pumps should, where possible, be located along the outer edge of the plot limit, outboard of columns and vessels, and with no equipment installed overhead. If it is necessary to locate pumps alongside in-plant overhead pipeways, the process ends should be at least 3 meters outside the extremities... 

When locating pumps, special consideration should be given to high-pressure and high-temperature pumps. 

Phosphoms is stored and handled under a protective layer of water. Production quantities are transferred as a Hquid by either water displacement or pumps, with water recycle to maintain the water balance and cover. In earlier times, phosphoms was sometimes stored in underground tanks or pits, but as of the 1990s storage is limited to tanks located inside diked areas that are accessible on the outside for safety and leakage control. 

Fig. 3. Rough layout sketch (/) the two fined heaters F-1 and F-2 are located together but are separated from the other equipment with a subpipeway connecting the process area to the heater area (2) the reboiler E-2 is located adjacent to its column, T-1. The preheat exchanger E-4 is located adjacent to tower T-3 (J) the elevated overhead condenser E-3 is located next to the overhead accumulator V-1. Also, the ain condenser EE-3 is located adjacent to its overhead accumulator V-2 (4) the rest of the ain coolers (EE-1—3, -5) are grouped together ia a common fan stmcture (5) all equipment and related piping is routed to and from the existing piperack saving the addition of a new piperack (6) all pumps (P-1—P-6) are located ia a row under the piperack, and each...

Reboilers need to be located next to the tower they serve, except for the pump-through types, which can be located elsewhere. Fired heater reboilers are always located away from the associated tower and use a pump to circulate the bottoms. Ketde-type reboders are preferred from an operational and hydraulic standpoint because they can be designed without the worry of having to ensure sufficient head for circulation required by thermosyphon reboders. However, ketde reboders require a larger-diameter shed that is more cosdy, and the reboder must be supported at a sufficient elevation to get the product to the bottoms pump with adequate NPSH. 

Control Room. The control room location can be critical to the efficient operation of a faciHty. One prime concern is to locate it the maximum distance from the most ha2ardous units. These units are usually the units where LPG or other flammables, eg, hydrocarbons that are heavier than air, can be released and accumulate at grade level. Deadly explosions can occur if a pump seal on a light-ends system fails and the heavier-than-air hydrocarbons coUect and are ignited by a flammable source. Also, the sulfur recovery unit area should be kept at a healthy distance away as an upset can cause deadly fumes to accumulate. 

Figure 12 shows the plan and elevation views of a process unit piping (9). A dmm is supported off the piperack. Heat exchangers are located far enough back from the support columns so that they are accessible and their shell covers can be removed. Pumps are located underneath the piperack, but sufficient room is provided for maintenance equipment to access the motors and to remove the pump if necessary. The motor is always oriented away from the process equipment and located on that side of the piperack. Instmment valve drops are shown supported from the columns. The instmment trays themselves mn on the outside of the support columns. Flat turns are only made from the outside position of the piperack. Nozzle-to-nozzle pipe mns are made whenever possible. Larger lines are located on the outside of the piperack. Connections to nozzles above the rack are made from the top... 

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