Annual running maintenance works connected with 12inch ,14 inch ash disposal pipe line of Ash Handling Division-II, 2x200 MW BTPS, Obra

Amount

Repairing/Replacement of worn out coupling or collar or sleeves by new one or providing asbestos rope of required size in ash disposal line 14”.

Cleaning of choked disposal line 12”/14”.

Strengthening of MS bend / lateral 14” / 12” by patch welding of MS plate/Pipe of required size and refixing

Alignment of misaligned disposal pipe line fitting of size 12”/14”.

Replacement of 12”/ 14” MS bends/ reducer/Lateral

Fabrication of MS lateral of size 14” x 14” x 14” of 450 for ash disposal line. Erection & commissioning the same in the ash disposal pipe line.

Cutting and welding of MS pipes size 12”/14” due to choking of pipe line or some other reasons.

Fabrication of bend 22 ½0, 450 to 900 in round curved shape for smooth flow of ash slurry from 14”/12” ERW M.S. pipe for ash disposal pipe line. Erection & commissioning the same in the ash disposal pipe lines.

Clamping of pipe including minor civil work like grouting of bolts in pedestal etc.

Repairing/Servicing of Air release valve/vent including replacement of worn out parts installed on ash slurry disposal pipe line.

Generator charges beyond power house boundary on job (welding work or part of thereof).

Shifting of pipe axially for adjustment of gap between pipe of size 14”/12”

Maintenance/repairing of 14” 9.5 mm thick ash pipe line, including patch work of different size.

To provide half stiffener on ash slurry disposal pipe line

To provide full stiffener on ash slurry disposal pipe line.

Fabrication and erection of supporting structure for disposal pipe lines fittings.

Replacement of 12"/14" MS. Pipe after transporation from store/sie stoe and shifting old dismentled M.S. pipe to srap yaed inside power station.

Dismantle the old & used 14" MS pipe line & open the coupling, cutting the joint etc. Safely and shift the same in the site store/scrap yard.

Erection and commissioning of 14" ERW MS new or old & reusable pipe line, bends, coupling etc. with good alignment and clamping too strong to carry ash slurry disposal at 06 to 08 Kg./cm2 discharge pressure successfully along with Transport the material from the site store/central store to working place. Note:- Cleaning of ash/foreign material at working place and cutting the grass, bushes etc. during the laying of pipe/bend is included in this scope of work.

Servicing of 12" knife edge gate ash flow valve (Dezurik valve)

Replacement of 12" knife edge gate ash flow valve (Dezurik valve)

Laying the 14”-ERW MS pipe lines, bends, couplings etc on the pedestal and welding the joint after making V shape at joint with D&H make Medio electrode.

M/S NISHA ENTERPRISES