ANNEXURE-A
SALIENT TECHNICAL FEATURES
(ERECTION AND COMMISSIONING OF SEEPAGE WATER RECIRCULATION PUMPS AND PIPELINE OF STAGE-I & II)
NTPC Talcher-Kaniha (TSTPS) plant is located in Kaniha block under Talcher sub-division of Angul district in the state of Orissa.
Nearest Town : Talcher 26 KMs
Nearest Railway Station : Talcher 29 KMs
Nearest Airport: Bhubaneswar 180 KMs
STAGE - I - 2 Units each 500 MW - Total 1000 MW
STAGE- II - 4 Units each 500 MW - Total 2000 MW
Ash dyke, Stage # I & II are situated about 5 to 12 km from main plant respectively. There are three lagoons in Stage # I. Two for ash disposal and 3rd one is used as Over Flow lagoon (OFL) where decanted clear water is stored and pumped to main plant for recycling purpose. One of the two dykes is always kept in service and other is in construction for raising after completing its service period.All the areas of dyke are well connected with plant and the work site of SWRS is mostly connected with WBM road.The purpose of installation of Seepage Water Recycling System (SWRS) is to collect seepage water from the toe along dykes’ periphery and return it to Overflow Lagoons (OFL) to achieve zero discharge to natural course.
Five Pump Houses shall be required to pump the seepage water from sumps of respective Pump houses (PH) which will cater whole area of dykes. The location of the PHs with their respective discharge points and approx. length of coverage are given below:
a. PH-01: At ‘Y’ point of Stage # I-OFL Stage # I, 3200 m.
b. PH-02: At AWRS PH area, Stage # I-OFL Stage # I, 2000 m.
c. PH-03: At Ash Management Building area-OFL Stage # II, 2300 m.
d. PH-04: At ‘D’ zone of Lagoon-2 Stage # II-OFL Stage # II, 3200 m.
e. PH-05: At ‘D’ zone of Lagoon-1 Stage # II-OFL Stage # II, 3000 m.
The equipments under consideration is the seepage water pump house consist of fifteen horizontal centrifugal seepage water pump , mono rail(each pump house having three pumps & one mono rail), the various type of valves/pipe lines connected with the pump house and individual discharge header from the pump house to clear water lagoon of stage-I & II.
JOBS IN BRIEF
In general the contract consists of erection & commissioning activities of pumps with motor, mono rail & laying of pipeline of different size connected to the system.