PLANT OVERVIEW:

NTPC Talcher-Kaniha (TSTPS) plant is located in Kaniha block under Talcher sub-division of Angul district in the state of Odisha.

Nearest Town : Talcher 26 KMs

Nearest Railway Station : Talcher 29 KMs

Nearest Airport : Bhubaneswar 180 KMs

INSTALLED CAPACITY:

STAGE - I - 2 Units each 500 MW - Total 1000 MW

STAGE- II - 4 Units each 500 MW - Total 2000 MW

EQUIPMENTS INVOLVED:

The equipment under consideration consists of Electrostatic Precipitators in Stage-II having four passes in each unit of Alstom make, model FAA 9 * 45 H – 2 * 78 – 145.5 – A2. There are eighteen fields in each pass and each field has one hopper in ESP. Each pass has two funnels at the inlet & at the outlet respectively.

JOBS IN BRIEF:

In general the contract involves carrying out of various overhauling works inside the ESP and funnels of two units of stage-II during their scheduled periodical overhauling for a period of six months.

ESP overhauling jobs consist of cleaning of shaft and support insulators, replacement of plain bearings, inner arms, outer arms and pinwheels, shock pads, deflector plates, shock bar and GD screens. Field inspection, field & hopper water washing, gauging, straightening of collecting plates, field alignment and rectification, lifting or replacement of shock bar, guides, inspection and replacement of emitting electrodes etc. are also included in the job. The party has to carry out replacement of gas distribution screens, welding of hopper corners and replacement of SS liners of hoppers as per requirement. ESP external area jobs during overhauling include painting of manholes, checking and arresting of air leakages/ingress in ESP manholes, support and shaft insulator housings after completion of overhauling.

During unit overhauling, most of the work will be carried above 15 m height hence, workers need to have adequate skill and must be insured and informed to safely work in challenging conditions like heat, dust and height work in a highly confined space, moreover mobilization is required at a very short notice keeping in mind the generation interests of the corporation. As the working area is an enclosed space, only 24 V lights are allowed and the contractor is required to arrange for the bulbs and electrical connections.

The funnel overhauling jobs constitute replacement of bracing pipes and duct plates of the ESP inlet funnel as per requirement and also providing protection angles on the above bracing pipes for resistance to erosion.

Also to meet the requirements arising out of emergency situations and for any other jobs not mentioned in the scope of works, the contractor has to deploy extra man days as per the instruction of EIC.