Annexure – I
AUGMENTATION OF DRY FLY ASH TRANSPORTATION
SYSTEM PACKAGE FOR 2 UNITS OF SIPAT STPP STAGE I (3 X
660 MW)
Brief scope of work
1.0 Description of Existing System
Sipat STPP Stage – I comprises of 3 units (Unit # 1, 2 & 3) of 660 MW each. The
existing ash handling system consists of a vacuum conveying system for
evacuation of fly ash from ESP hoppers to buffer hoppers located near the ESPs.
The vacuum conveying system is provided for all three units of Stage I. The
second stage transportation system consists of a pressure conveying system for
fly ash from buffer hoppers up to storage silos.
The capacity of the existing transportation system is suited for transportation of
dry fly ash from buffer hoppers to storage silos for only one unit at a time.
2.0 Scope of Proposed Augmentation Package
The augmentation of dry fly ash transportation system consists of transportation
of fly ash from existing buffer hoppers of 2 Units of Stage I, to storage silos by
pressure transportation system.
System will consist of transport air compressors, instrument air compressors,
CI/MS pipes, structural steel silos (4 numbers), silo aeration blowers, hydromix
dust conditioners, telescopic chutes, booster & wash water pumps etc.
Under electrical system, LT switchgears, LT power & control cables along with
PLC based control system, lighting, cabling, earthling, lightning protection,
motors, VFD etc. are included.
Under C&I system, all instruments and devices, instrumentation cables are
included.
Civil works and structural works associated with the system are included.
Work shall include both new Structure and strengthening of existing Structure as
per system requirement.
Annexure – II
Salient Technical Features
Augmentation of Dry Fly Ash Transportation System for 2 Units for Sipat STPP
Stage – I
The augmentation of dry fly ash transportation system consists of transportation
of fly ash from existing buffer hoppers of 2 Units of Stage I, to storage silos by
pressure transportation system.
Proposed system will consist of transport air compressors, instrument air
compressors, CI/MS pipes, structural steel silos (4 numbers), silo aeration
blowers, hydromix dust conditioners, telescopic chutes, booster & wash water
pumps etc.
Under electrical system, LT switchgears, LT power & control cables along with
PLC based control system, lighting, cabling, earthling, lightning protection,
motors, VFD etc. are included.
Under C&I system, all instruments and devices, instrumentation cables are
included.
Civil works and structural works associated with the system are included.
Work shall include both new Structure and strengthening of existing Structure as
per system requirement.
