PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

Base plate:
The common base plate for pump and motor shall be fabricated from mild steel
sections and have sufficient rigidity to resist vibration and distortion. Suitable holes
shall be provided for grouping and they shall be so located that the base will be able
to be grouped in place, without disturbing the pump and motor. The base plate
should be of the drain rim type to collect any gland water leakage and lead to drain.
All pumps and motors shall be properly and accurately aligned, bolted and doweled
to the base plate. Adequate space shall be provided between pump drain
connections and base plate for installation of minimum 15 mm diameter drain pipe.
Foundation bolts shall be complete with nuts and flat and shake proof washers.
Coupling:
A flexible pin bush type coupling shall be provided, duly bored and keyed to the
pump and motor shafts.
The coupling and the pump shafts have to be designed that the breaking load of the
coupling system is below that of the shaft.
Accessories:
All specified accessories and any other standard accessories required for correct and
safe operation of the pump shall be furnished with the pumps. All incidental piping
(including valves) required for sealing, lubrication and cooling of stuffing box
packing and/or pump bearing shall be furnished by the contractor. A mild steel
fabricated coupling guard shall be provided to rotating parts of the pump and motor.
Eye bolts (as many per pump as required) shall be provided for ease of lifting and
installation.
The pump shall be fitted with a suitable vent connection at the top.
All the liquid passages in the casing and impeller, which are inaccessible to
machining finish, shall be finished to a smooth surface as far as is possible.
Drawings and information to be provided.
GTS : General Technical Specification. Page 151