technical NOTES

(Project Pridr) #1

  • Lesser steam temperature & pressure drop design from Boiler outlet to Turbine
    inlet.

  • All pumps are designed for 20% over the MCR Flow capacity and 10% over the
    MCR head:
    Reliability

  • The gear and pinion teeth shall be case carburized and ground to an accuracy
    class of 4 or higher to DIN Standards

  • The gear box shall be capable of transmitting the maximum rating of the set and
    be able to withstand 20% over speed over a period of minimum five (5) minutes.
    Savings

  • Lower vacuum of 0.116 ata than normal selection of 0.15 / 0.2 ata - Increasing
    TG Exhaust Pressure by 0.01ata the heat rate of TG set reduction by 1%, around
    35 to 45 Kcal/KWH

  • TG roof by insulated puff sheeting instead of RCC over Rolla deck, Reduce
    Construction cost by about Rs 30 Lacs per project& time.

  • STG with Top exhaust- To reduce Civil cost & reduce construction time Top
    exhaust for Turbine is planned. To optimize civil cost (Rs 100 lacs) and to reduce
    execution time by one month

  • EOT Capacity- Sizing shall be based on the actual lift capacity of the heaviest
    equipment for maintenance

  • Better heat rate turbine

  • Energy Efficient pumps

  • VFD’s in all centrifugal pumps,

  • Insulation of turbine casing (Ceramic fiber (400 mm thk.) + CAT-9 (13 mm thk
    min) +SS studs + SS chicken mesh) and surface temperature shall be not more
    than amb +20 Deg C

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