EP 1110-1-27
27 Jan 00
Table 5-1. Minimal First-Year PM Schedule
Maintenance Test
Testing Regime
Time Interval
Physical inspection
Borehole color video
On new wells, then at pump service
intervals
Surface facility inspection. Inspect
Monthly or whenever visited
and clean as needed at sampling
points
Examination of pulled components
As needed, when pulled.
Hydraulic
Well discharge or acceptance
Weekly (recommend installation of
performance
(volume rate and pressure)
automated data collection in
accordance with CEGS 13405)*
Drawdown or head change
Weekly (recommend installation of
automated data collection)
Graphical analysis
Quarterly
Specific capacity test (well hydraulic Annually on selected trouble or
performance) on selected
recommended wells or at
representative wells.
recommended shorter intervals
Pump performance. Conduct step
At least annually or at recommended
shorter intervals if pump service is
"pump" test (Section 2.1) of
centrifugal pumps and similar wear
severe (Q/s and pump test can be a
analysis of positive displacement
single operation). Alternative: In
pumps, compare to "nominal" data.
maintenance system, include triggers
for out-of-nomimal power readings.
System and motor V, A, φ, Ω
Electrical (power)
When visited for service (Recommend
installation of current monitors with
alarms)
Physicochemistry
PH, mV, and temperature
At well start up and quarterly using
project onsite instruments (calibrated)
or routine (laboratory)*
Suspended particulate matter (sand,
At well testing then at pump test
silt, clay)
intervals
Biofouling microbial
BART analyses. After clog-typing,
At well start up for baseline, then
component
pick suitable test type (IRB, SRB, or quarterly on selected representative
SLYM) and monitor for change.
wells.
Treatments and
Well hydraulic improvement and
As testing indicates Q/s or injection
service
pumping systems
rate drops below 90% or pumping
system degrades
In accordance with CEGS 13405
* CEGS 13405 specifies continuous metering, monitoring, and recording equipment for parameters such
as flow, temperature, pressure, and physical-chemical properties of discharged fluids. It does not include
methods for cleaning or other O&M issues.
5-2
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