CESC Limited : Generation : Fuel

CESC : FUEL ( COAL & OIL )

COAL

ASH

Source of coal varies for different Thermal Power Plants of CESC as per design parameters of individual Boiler. Mainly coal is supplied by ECL from Ranigaunge and Mugma fields, by BCCL from Barakar and Kusunda areas and by MCL from IB Valleys.

Coal is transported through Railway Linkage from respective fields to all Generating Stations. Due to busy traffic and some restrictions in direct Railway receipt, a formidable part of coal is unloaded from Railway wagon at Ultadanga and carried over to two of our TPPs via road.

To know about Combustion click here

Ash is evacuated from Stations by ash-trucks. In old Stations, Mulajore and New Cossipore ash generated is in the form of cinders and in the P.F. Stations, Budge Budge, Titagargh and Southern, ash is generated in power from. For PF Stations only, on an average, around 1000 tons of Ash from Titagarh Generating Station, 2100 tons of Ash from Budge Budge Generating Station and 550 tons of Ash from Southern Generating Station are evacuated daily. From evacuation to transportation and disposal of ash, all statutes of environmental norms are strictly followed.
CESC has geared up activities for fly ash utilization in different ways.

Budge Budge Generating Station:

	Export of fly ash from BBGS to Cement Plant in Bangladesh has started during April, 2001
	Work on fly ash based Sintered Light Weight Aggregate (LYTAG) project with ash from BBGS has started and is scheduled to be completed by 202. This project will use 500 TPD ash of BBGS.
	CESC is in the process High Concentration slurry Disposal (HCSD) System. This is a proven Eco friendly method of quick solidification of Ash slurry and this will use around 1000 TPD of ash of BBGS. System is likely to be commissioned by 2002.
	CESC has already entered into a agreement with M/s Ambuja Cement Eastern Ltd. for supply of 6000 TPD of dry fly ash primarily from Southern Generating Station to their 1 million TPA Cement Plant. Any shortfall of the committed quantity will be replenished by supplying ash from BBGS. Ash supply has already been started from 15.01.2001.
	Supply of fly ash to Rajarhat New Township for land development work is in progress.
	Supply of around 50 TPD to various local Brick fields continues.

Titagarh Generating Station :

	Supply of 150-200 TPD for a manufacturing unit of fly-ash-clay ready-Mix, to cater to requirement of conventional Brick Fields
	For use as a Cement substitute ‘Pozzocrete’ Regular supply of 200 TPD Ash for CMDA Road Sub-base construction continues.
	Supply of 60 TPD for local Brick Fields continues. Supply for land development at Rajarhat Mega City Project continues.

Southern Generating Station :

Supply of entire fly ash to M/s Ambuja Cement Eastern Ltd. for their 1 million TPA Cement Plant has started from 15.01.2001.

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ANALYSIS OF COAL

PROPERTIES	OLD STATIONS	NEW STATIONS
Moisture	6 – 10%	3 – 5%
Volatile Matter	28 – 32%	20 – 25%
Ash	13 – 20%	30 – 45%
Fixed Carbon	40 – 45%	30 – 40%
GCV	5200 – 5700 Kcal/kg	3700 – 3900 kCal/kg

Requirement of coal at all Thermal Power Plants of CESC Limited is around 12500 Tonnes to generate around 19 MU per day. At least 7 to 10 days' Coal Stock in each Plant is generally maintained to cope up with unforeseen disruption at source or traffic in pipeline.

OIL ( LDO )

Light diesel oil is used as fuel for furnace stabilization and start-up firing in P.F. Boilers only. LDO is procured from “Indian Oil Corporation” and “Hindustan Patroleum Corporation” through tankers. Bulk requirement of LDO is around 8500 kilo liters per annum towards an approximate 5500 MU of combined Generation from 3 P.F. Stations. Gross Calorific value of LDO used is around 10700 kcal/ Kg.

*CESC Limited : Generation Division*	*Generating Power Since 1899 ...*