Pumps testing

Hydraulic gradient, permeability, and effective porosity from water level contours, pump test results, and laboratory analyses... 

A. MDP-IA AC Power A Breaker Al 131 Fail open Concurrent failure to start or run CFSR At pump test Pump operability only Treat as pfiri pumping... 

Pump tests are needed to establish the performance of a machine before delivery to the user so that contract conditions may be satisfied. They are also required to establish the health of the pump at intervals in its service life. When a new pump is delivered, the pump manufacturer will supply data required either as a set of performance points or a plot as a certificate of suitability. Ideally, the pump should be tested in the system configuration that it is intended to supply, but usually tests are performed in the test bay in a standardized manner laid down by national and international codes. When a pump is installed, a simple test may be performed to establish a performance point in a similar way to periodic tests to establish how the machine s performance is being affected. 

Accurate site investigation data with test drillings and pumping tests are also of importance for modelling and simulations to be used for permit applications. The simulations are used to predict the thermal and hydraulic influences and are used for environmental assessment issues as well as for prediction of potential physical damages caused by the pumping of ground water. 

This material will give the first picture of the aquifer and will be the basis for complementary site investigations. These may include test drillings, geophysical logs and pumping tests with water chemistry in order to fully understand the aquifer conditions. 

The latter five bullets are obtained by using different forms of pumping tests. Such a test is normally done with a pumping well and a number of observation wells or pipes placed at certain distances from the well and in different directions. The duration varies but is commonly 1-2 weeks. 

From a pumping test the permeability is evaluated as Transmissivity (m2/s). This parameter express the added permeability s meter by meter. By dividing the transmissivity with the thickness of the aquifer an average permeability is given. 

Figure 37. A pumping test is used to evaluate the hydraulic properties of the aquifer...

Based on the results a conceptual model is created and the hydraulic properties of the aquifer and its surrounding layers are derived from the pumping test. 

Typical Data Form for Fire Pump Testing... 

FIGURE 3.23 Time-drawdown graphs for a pumping test. 

Hantush, M. S., 1966, Analysis of Data from Pumping Tests in Anisotropic Aquifers Journal of Geophysical Research, pp. 421 126. 

Kruseman, G. P. and DeRidder, N. A., 1979, Analysis and Evaluation of Pumping Test Data. International Institute for Land Reclamation and Improvement, Bull. 11, Wageningen, the Netherlands, 200 pp. 

Well spacing is determined based on aquifer pumping tests, which provide data on aquifer permeability and the radius of influence per well at various pumping rates. Wells are placed to provide overlapping cones of influence within the con-... 

A pumping test may be performed to evaluate hydrogeologic characteristics of the aquifer. Derived data can be applied to computer models or at least included in the conceptual site model. 

Preliminary estimates of LNAPL made during the investigative phases of a project are usually based on the results of short-term pumping tests, approximations of actual LNAPL thickness based on gauging data generated from monitoring wells, and other approximate data. The numerical estimates based on this short-term information are often adequate to define the physical parameters sufficiently for prelim-... 

On-site aquifer testing has also been performed in several phases. Typically, pumping tests are performed on newly installed injection and recovery wells to collect data used to determine optimum pumping or maximum injection rates. Monitoring wells are also tested to determine the location or feasibility of injection and recovery wells. 

A limited number of aquifer pumping tests have been conducted within the perched zone. Two separate tests were conducted on a recovery well located in the southwestern portion of the refinery. Low transmissivity values of 100 and 150 gpd/ft were calculated. 

The plotted spectra shall be included with the pump test results. 

Last maintenance check of No. 2 diesel fire pump and the electric fire pumps. Test run of 5 minutes, (maintenance records)... 

H11.6, Centrifugal pump — Tests HI2.6, Vertical pump — Tests... 

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