ALP Transfer Inspection Report

I
Animas -La Plata Project
Feb 13, 2013 Draft Transfer Inspection Report
(56 cfs , 5,000 hp each), two medium pumps (28 cfs , 2,500 hp each), and two small pumps
(14 cfs , 1,250 hp each).
TRANSFER ISSUE
STIPULATION
Pump interior coatings are
Reclamation will continue to monitor, address, and repair pump
RTD issues.
damaged, there are missing
solids excluder bushings,
Reclamation will rebuild all pumps, or establish a procedure and
mechanical seals are worn,
funding to provide for pump repairs as operating conditions
bearings need replacement,
dictate. Reclamation will investigate the casing misalignment
and tops and bottoms of
issues, oil sample analysis on Unit 3, and oil leakage on Unit 4.
pump casings are slightly
misaligned
There are no blind flanges
Reclamation will provide two blind flanges per each different
available for working on the
pipe class and size in the unit bay.
individual units
The corner bolts on the top
Reclamation will ensure that the bolts /nuts are accessible, either
of the pump casings are not
by providing a socket that will fit, or providing hardware that is
accessible to the impact
accessible.
wrench
Background: All eight pumping units show some degree of wear and coating
deterioration. A pump coating report was prepared by Reclamation in February 2012.
Various degrees of wear exist on all pump coatings. Coating delamination on several
pumps was believed to be the result of inadequate surface preparation and coating
adhesion.
6. 14 CFS Pumping Units 1 and 2, Piping, and Valves
There are two horizontal centrifugal split -case pumps, nominally rated at 14 cfs. They are
driven by two 1,250 hp electric motors. The following are located between the suction
manifold and discharge manifolds:
• Motor - operated, AWWA class 15013, 18" suction butterfly valves — (M1D, M2D)
• Air valve
• Motor - operated, ANSI Class 300, 18" discharge butterfly valves — (M1E, M2E)
• Hydraulically dampened ANSI Class 300 18" check valves
• Connection to City of Durango manifold
• Connection to discharge /Inlet Conduit filling line through the pressure sustaining
valve (PSV)
• Motor - operated, ANSI Class 300, 18" guard butterfly valves — (MiF, M2Fm MPC)
• City of Durango motor operated ANSI Class 300 isolation butterfly valves — (MPA,
MPB,MPD)
• City of Durango manually operated ANSI Class 300 isolation butterfly valve — (D5)
• Connections to 72" discharge manifold
TRANSFER ISSUE
STIPULATION
Unit 2 internal RTD keeps
shorting out
Reclamation will continue to monitor, address, and repair pump
RTD issues.
Transferred Works Inspection 18 Animas -La Plata Project