TM 5-813-9
3. PIPELINE DATA
a. Type, class, maximum operating pressure, test pressure, allowance
b. Pipe material and Young*s modulus of elasticity
c. Pipeline friction factor (Hazen Williams coefficient, Manning coefficient, Darcy Weisbach friction
factor)
d. Lengths (Actual lengths only). Equivalent lengths should not be used since minor losses will be lumped
into a friction coefficient or a concentrated head loss item as appropriate
4. VALVE DATA
a. Size and flow characteristics at various opening (Cv versus angle of opening)
b. Valve operator speed and characteristics
c. Type of check valves, damped or undamped
d. Description of pump station discharge or suction control valves for normal operation and emergency
operation
5. PUMP AND DRIVER DATA
a. Pump perforance data (head, efficiency, horsepower, or torque versus flow)
b. Number of stages (for specific speed calculation)
c. Changes expected for increased throughput
d. Rated conditions (conditions at the best efficiency point for head, flow, speed, and torque)
e. Rotar polar moment of inertia WR2 or equivalent WR2, as viewed from the pump end for the driver,
coupling, gearbox, pump and enclosed fluid as applicable
f. Pump characteristics diagram or synoptic chart (if not available, curves from a pump of similar speed
could be used
g. Driver type (induction motor, synchronous motor, turbine, etc.)
h. Driver torque versus speed curve (for pump start-up cases)
i. Safe current versus time data for electric motors if start-up analysis is to be performed
j. Special devices on pump/driver such as non-reverse ratchets, clutches, etc.
k. Pump station controls description (minimum flow shutdown, flow discharge pressure shutdown, etc.)
6. OPERATIONAL DATA
a. Normal start-up and shutdown procedures
b. Emergency operational procedures
c. Unplanned operations (inadvertent closures, pump shutdowns, etc.)
d. Constraints on pipeline and equipment operation
7. KNOWN BOUNDARY CONDITIONS
a. Constant head sources (reservoirs, tanks, etc.) and elevation of liquid surfaces
b. Constant flow outlets or inlets
c. Other known boundary conditions
8. SURGE SUPPRESSION DEVICES
a. For water pipelines--Combination air and vacuum valves plus air release valve option, or air release
option only (valve size, type, model number, location, etc.)
b. Surge tanks (tank area and height)
c. Accumulators (tank volume, initial gas volume, other parameters)
d. Relief devices (set pressure, relief devices performance data)
e. Specific surge control devices or schemes preferred
Note: Parameters for surge suppression devices will usually be determined by the hydraulic
transient studies.
9. REPORT REQUIREMENTS
a. Type of report required (letter report or detailed engineering report)--number of copies
b. Specific requirements
Figure 4-4. Checklist Surge and Water Hammer Analysis--continued
4-5
Previous Page
