Tender Document for Repowering Project of Ghorasal 3rd Unit - BPDB

3.5.3 Cooling system
3.5.4 Noise Levels
The units shall be designed for water cooling of the condenser, lubrication
oil system, etc. The cooling system for generator shall be closed cycle cooling
water and air cooling system.
The Noise level shall be as per Annexure-4.
3.5.5 Vibration Severity
Vibration severity of the units shall not exceed 8.0 mm/sec. In normal operation
measured at any bearing pedestals both in vertical and horizontal
plane.
3.5.6 Critical Speed
The Critical speed of the rotor assembly as a complete unit shall be at least
20% above or below the operating speed range of the units.
3.5.7 Spare Parts and consumables
The Contractor shall submit a list & supply accordingly Essential spare
parts with OEM part No. (as per Vol. 2, Schedule-F) to be necessary for
maintenance of Gas Turbine Generating Unit, Steam Turbine Generating
unit, HRSG and other plant equipment inclusive of routine, scheduled as
well as emergency use that takes place in the course of operation of the
plant during warranty period (24 months) which are mandatory. It may be
mentioned that Tenderer must quote in Schedule-F in full quantity and also
additional items & quantity necessary as stated in Tender Document, otherwise
Tender shall be rejected. During the warranty period of 24 months,
the Contractor shall supply all necessary equipment, spare parts, materials/consumables
etc. at his own cost and whether it is listed or not in in
Schedule-F, Vol. 2 of 2 Part B Tender Documents. In preparation of the list
the tenderer have to consider plant factor as 80%. During the warranty period
the Contractor have to conduct (providing all required spare parts and
service) at least 1(One) CI for Gas Turbine and at least one Inspection for
other equipment and any other maintenance work for force outage. Spare
parts & consumables to be supplied for warranty period under the Contract
must be made available at site before start of testing.
All spare parts shall be subject to the same specification, tests and conditions
as similar material supplied under the inter-changeable and suitable
for use in place of the corresponding parts supplied with the plant and must
be suitably marked and number for identification and prepared for storage
by greasing or painting to prevent deterioration.
All spare parts shall be delivered in cases or containers suitable for storing
such parts over a period of years without deterioration under the atmospheric
conditions existing in Bangladesh. The cases shall remain the property
of the Board.
Each case or container shall be marked with the appropriate contract details
and a list of the parts contained therein with identification references
Re-Powering Ghorasal 210 MW 3 rd Unit (Vol-2A of 2) 40