Hydro Power Renovation

Amount

Civil Works

Earth work in excavation in ordinary soil and soft rock and disposal of excavated earth as obtained to a distance up to 30 m including all leads and lifts, travelling, ramming the foundation trenches, removing roots of trees, shurbs all complete as per direction of E/I.

Providing PCC. M-10 with nominal mix of 1:3:6 with 4 cm down coarse aggregate, approved coarse sand and cement including vibrating finishing, curing, I&P etc.as E/I

Providing RCC-1:1.5:3 with approved quality of stone chips 20 down and well graded and clean coarse sand of FM-(2.3 to 3) excluding reinforcement including screening, shuttering, mixing cement concrete in mixer and placing in position, vibrating, striking, curing all complete as per specification and direction of E/I

Providing high tensile TMT steel reinforcement as per approved design and drawing including cartage to works site cutting, bending and binding with annealed weir with cost of weir, removal of rust, placing in position all complete as per specification and direction of E/I

R.R. Stone masonry laid in 1:6 cement sand mortar in b/wall, R/wall, parapets, scupper etc. including supply of all material, labour, T&P, royalty etc. required for proper completion of work as per direction of E/I

Providing & laying of wire crates 3x1.5x1.5 in size with a 10 gauge BWG “G.I.” wire conforming to IS:280 & IS:4826 in 150mm x 150 mm mesh laid with stone boulders weighing not less than 25 kg each. as per direction of E/I.

Hand pacted Stone Filling in back of walls including cost of all material t&p etc. complete as per direction of E/I.

Supply & installation work for mild steel Penstock Pipe diameter 450.00 mm. OD Thickness 6 mm design discharge 290 LPS including all complete work

Repair/Welding work for existing Penstock pipe including all complete work

Repair of butter fly valve provided for controlling discharge in turbine require to checked, Overhauled, the main seal is to be replaced with new seal of recommended specification, the hydraulic systems also require to be overhauled and leakages to be arrested

E & M works

Turbine and Auxiliaries Complete overhauling, repair & Renovation of turbines & Governors after Dismantling Including following: (a) Welding of eroded under water parts and thereafter grinding to achieve the designed profile. (b) repairs in shaft and the runner casing By Welding and grinding, as required (c) Replacement of bearings of deflectors. (d) Replacement of Nozzles. (e) Replacement of Jets. (f) Replacement of Governor Brass gears (g) Replacement of Pressure Gauges (h) Replacement of Speedometers (i) General overhauling of butterfly valves and their hydraulic units including Replacement of seals of the butterfly valves (j) Replacement of all old seals and packing Including O-rings of specified material, Shaft seal system etc.

Generators and Auxiliaries Overhauling of generator after dismantling Including excitation system and AVR as Detailed in para 3.23.3. including following Works (a) Replacement of slip rings (b) Replacement of Carbon Brushes and Brush gears (c) Replacement of Brushes of Coupling of Turbine and generator (d) Replacement of Manual Voltage Regulator by automatic voltage regulator. (e) Refurbishment of Excitation System

T & D works

Centralized Items (Supply & Installtion)

ST Pole SP-21

ST Pole SP-10

Stay set 16 x 1800 mm

Stay Wire 7/10 swg

M.S.Channel 100 x 50 mm (6*1.8*9.98)

M.S Angle 65 x 65 x 6 mm (for transformer base 5*24)

11 KV Polymer Pin Insulator (6*3+10 extra)

11 KV Polymer disc Insulator extra

11 KV Disc Fitting 45 KN extra

LT Shackle Insulator

ACSR Weasel conductor

T/F 63 KVA

LT XLPE cable 4*25

Non Centralized Items

Holding Clamp with N & B for SP-21 Pole

Stay Clamp with N & B for SP - 21

Stay Clamp with N & B for SP - 10

LT clamp for SP-21

LT Shackle insulator 75 x 90 mm

Stay insulator

Other misc works

25 KVA T/F at power house store

Small material back store to PH

Dismantling of SP10 Pole and Store at Power house

Dismantling of 25 KVA T/F from D/P and store at power house

Mounting of 63 KVA T/F

Excavation of earth for SP-21 and SP-10 pit size 1900 x 750 x 1500 mm

Erection of SP-21 pole in of pit size 1900 x 750 x 1500 mm with mud & mixed bolder with muffing

Erection of SP-10 pole in of pit size 1900 x 750 x 1500 mm with mud & mixed bolder with muffing

Dismantling of damage LT line Single phase 2 wire

Repairing of damaged 11 KV line in weasel

Relaying of LT line in weasel Three phase 4 wire

Lopping chopping of tree branches

Tightening of tilted poles

d.s.engineer

mahar engineers