Tender Document for Repowering Project of Ghorasal 3rd Unit - BPDB
Tender Document for Repowering Project of Ghorasal 3rd Unit - BPDB
Tender Document for Repowering Project of Ghorasal 3rd Unit - BPDB
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Enclosures shall be weather pro<strong>of</strong>ed and shall <strong>for</strong> wind loading <strong>of</strong> 100<br />
miles/ hour.<br />
Enclosures shall be designed to permit easy accessibility to the equipment<br />
and to provide necessary protection <strong>for</strong> maintenance personnel. Sound<br />
absorbing insulation shall be provided on the enclosures, Enclosures shall<br />
be provided with walkways, steps, strains, and equipment doors <strong>of</strong> the<br />
locking type.<br />
Enclosure insulation, ventilation, and cooling shall be provided to maintain<br />
temperatures suitable <strong>for</strong> personnel and <strong>for</strong> all systems whether standby or<br />
operating. <strong>Unit</strong> control rooms shall be ventilated and air-conditioned.<br />
Turbine compartment and generator compartment shall be adequately<br />
ventilated utilising <strong>for</strong>ced ventilation with louvers and bug screens as<br />
required <strong>for</strong> protection <strong>of</strong> the houses equipment from outdoor<br />
environmental conditions.<br />
Adequate interior lighting shall be provided, and emergency DC lighting<br />
shall also be provided, and those shall be energised through an automatic<br />
throw over contractor when AC source fails.<br />
Enclosures shall be provided with 240 volt AC service outlets.<br />
The noise level at 1 (one) meter distance will not be more than 85 dB and<br />
less than 65 dB at 100 meters.<br />
4.3.2.13 Fire Protection Equipment<br />
The entire gas turbine generating unit including all auxiliary compartment<br />
shall be automatically protected from fire with complete fire protection<br />
system complete with C0 2 gas system, fire detectors, pipeworks, control<br />
and safety device. Actuation <strong>of</strong> the fire protection system shall be indicated<br />
at the control compartment and by a visual and an audible alarm to warn<br />
any personnel in the compartments.<br />
4.3.2.14 Casing Design<br />
The casings <strong>of</strong> all the rotary parts on the main unit shall be spilt horizontally<br />
<strong>for</strong> easy dismantling and inspection. Lugs <strong>for</strong> lifting the upper casing shall<br />
be provided at points which will lift the casing half well balanced. Complete<br />
lifting gear together with lifting drawing and instruction shall be furnished.<br />
4.3.2.15 Insulation and Lagging<br />
Thermal insulation shall be provided where necessary and is to include<br />
such parts as the combustion chambers, exhaust ducts and hoods.<br />
Removable insulation blankets shall be provided in all parts where<br />
insulation must be removed <strong>for</strong> maintenance purposes.<br />
Re-Powering <strong>Ghorasal</strong> 210 MW 3 rd <strong>Unit</strong> (Vol-2A <strong>of</strong> 2) 50
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