SPECIFICATIONS
DESCRIPTION
The Medical Waste Disposal
Incinerator Unit shall be of Dual or Multiple Chamber type that
thermally degrades combustible medical wastes of varying heat content
using a two-stage or multiple stages combustion processes. That is first
stage of thermal waste degradation in the primary chamber and second
stage of smoke burning (flue gas treatment) in the secondary chamber.
The waste burning process per cycle shall be fully automatic from start
to finish. The waste incinerator unit shall consist of a primary
chamber, secondary chamber, stack, combustible air blower, burners and
controls as the main components.
WASTE INCINERATOR CAPACITY
The waste incinerator unit
shall be designed to burn medical waste load of capacity 50kg/hr with
calorific values ranging from 2, 300 kJ/kg to 30, 000 kJ/kg at a
designed thermal rate of 1, 440, 000 kJ/hr.
METHOD OF WASTE CHARGING
Waste shall be fed into the
primary chamber manually, that is by hand. Semi-automatic or automatic
feeding systems are not required.
METHOD OF BURNING
The primary and secondary
burners shall be equipped with at least one fuel oil burner each. Waste
shall be manually fed into the primary chamber and heated to required
ignition temperature of at least 600 degree Celsius. A controlled amount
of air shall be admitted by combustion air blower to maintain the
necessary reaction heat required for thermal degradation of waste.
Smoke, ashes, volatile gases etc, generated from the primary chamber
shall be effectively and efficiently ignited in the secondary chamber.
Emission through the stack shall be within environmental standards.
COMBUSTION CHAMBERS
The internal lining for
combustion chambers shall be made up of pre-determined thickness and
high temperature stability insulation, high strength firebricks and
castible refractory. The temperature rating for refractory shall be at
least 1, 500 degree Celsius. The casing of the chamber shall be
constructed from high grade mild steel plate. Lifting devices such as
eye bolts and lifting lugs shall be fitted as standard.
DOORS
The doors shall be hinged
on the right hand side and can be easily opened and closed. All doors
shall be manually operated. Incinerators shall NOT incorporate automatic
doors. All doors should be internally lined with pre-determined
thickness insulation and refractory cement.
STACK
The stack shall be fabricated from pre-determined
thickness stainless steel plate suitably flanged for connection.
COMBUSTION AIR BLOWER
A combustion air blower
shall be of steel construction type with built-in air damper regulation
shall be provided. The impeller shall be of the radial blade design and
all rotating elements shall be dynamically balanced.
BURNERS
Burners fitted shall be of
packaged fuel oil fired types. Primary chambers shall be fitted with an
on/off type burner while the secondary chamber shall be fitted with a
high/low burner. The burners shall each have a maximum rating of 330,
000 kJ/hr.
CONTROLS
A control system shall be
provided to control all functions of the primary and secondary chambers
including combustion air distribution and burner control. It shall
comprise of PLC, temperature controllers, timers, relays and switches to
provide automatic operation of the entire system. All switches and
controls shall be mounted in an IP 55 rated control panel.
POWER SUPPLY
The incinerators shall have
a power supply of 240/415 volts, 50Hz AC. All electrical works shall
conform to SAA Wiring Rules SA 3000.
FINISH
All equipment shall be
painted with a coat of zinc rich primer and two coats of high
temperature heat resistant polyurethane type paint. All painted surfaces
shall be prepared by either steel shot cleaning or sand blasting.
FUEL TYPE AND TANK
The burners shall be fueled
oil (diesel) fired.
OTHERS
Incinerator Plant lay-out,
List of Equipment and
Installation Services,
Site Preparation,
Installation and Other Services
Recommended Spare Parts
Installation Program or
Execution Plan
COSTINGS
Shall include total cost of unit including supply, delivery,
installation, commissioning and training of operational technician
