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PART II TERMS OF REFERENCE

Terms of Reference (TOR) to convert line one raw mill ESP (Electrostatic precipitator) to

Bag filter.

Introduction

Messebo Cement Factory PLC (MCF PLC) Mekelle, Ethiopia having two kilns line-I 2000

Tons/day clinker production capacity, supplied by FLSmidth Denmark & Erected by ENKA

Turkey & line-II 3000 Tons/day clinker production capacity, supplied and erected by Hefei

Cement Research & Design Institute (HCRDI) China, wants to change the line one raw mill

ESP by Bag filter.

Now, MCF PLC would like to invite eligible bidders who have good experience in changing

ESP to bag filter on turnkey basis i.e. design, construction, supply, erection & commission.

Objective of the work

- Currently as the efficiency of the line I raw mill ESP is decreasing from time to time due to

deteriorating electrical parts, fuel shifting, malfunctioning of the gas conditioning system

caused by frequent failure of nozzles & water pumps, which subjected the system to release

high quantity of dust to the atmosphere which has an impact to the surroundings, since it is

polluting the environment and also uneconomical, therefore, the purpose of the work is to

eliminate the dust coming out from the ESP by changing the ESP by bag filter.

General

- The type of existing ESP is “F300/H45/2*40-90/30” supplied by FLSmidth “MILJO”

Denmark, the purpose of the installed ESP is to trap dust which comes from pre-heater and

raw mill.

- The Designed capacity of the kiln line-I is 2000 t/day with 100% heavy fuel oil, but, since

2009 the fuel system is switched to coal & the system is operating 100% by coal imported

from South Africa. The average sulfur content in the coal is 0.43% by weight. But, currently

the clinker production capacity has been increased to 2300t/day on average.

Process parameters and Alarm setting