NFN/INST/DGM/IE-01/2022/1003 dtd.22.10.2022

Removal,Transportation & Fixing of Control Valves

Removal of Control Valves from pipelines at all elevations in plant,Pr. Rating upto and including 600 LBS & Valve Body size up to and including 2”

Removal of Control Valves from pipelines at all elevations in plant,Pr. Rating upto and including 600 LBS & Valve Body size above 2”, upto & including 4”

Transportation of Control Valves to & from Workshop. Pr. Rating upto and including 600 LBS & Valve body size up to and including 2”

Transportation of Control Valves to & from Workshop. Pr. Rating upto and including 600 LBS & Valve body size above 2”, upto & including 4”

Fixing of Control Valves at all elevations in Plant after bringing from Workshop after repairs, End connections to be cleaned and new Gaskets to be provided, Pr. Rating upto and including 600 LBS & Valve Body size upto and including 2”

Fixing of Control Valves at all elevations in Plant after bringing from Workshop after repairs, End connections to be cleaned and new Gaskets to be provided, Pr. Rating upto and including 600 LBS & Valve Body size above 2”, upto & including 4”

Removal of Control Valves from pipelines at all elevations in plant, Pr. Rating > 600 LBS & Valve Body size up to and including 2”

Removal of Control Valves from pipelines at all elevations in plant, Pr. Rating > 600 LBS & Valve Body size above 2”, upto & including 4”

Transportation of Control Valves to & from Workshop Pr. Rating >600 LBS & Valve Body size upto and including 2”

Transportation of Control Valves to & from Workshop Pr. Rating >600 LBS & Valve Body size size above 2”, upto & including 4”

Fixing of Control Valves at all elevations in Plant after bringing from Workshop after repairs, End connections to be cleaned and new gaskets to be provided, Pr. Rating > 600 LBS & Valve Body size upto and including 2”

Fixing of Control Valves at all elevations in Plant after bringing from Workshop after repairs, End connections to be cleaned and new gaskets to be provided, Pr. Rating > 600 LBS & Valve Body size above 2”, upto & including 4”

Removal, Refixing of control Valve from Bonnet & Actuator

Removal of Control Valve from Bonnet & Re-fixing, old Gasket to be removed & new Gasket to be provided. Valve Body size upto & including 6"

Removal of Control Valve from Bonnet & Re-fixing, old gasket to be removed & new gasket to be provided. Valve Body size above 6", upto & including 18".

Removal & Fixing of Actuator of control valve.Valve Body size upto & including 8"

Removal & Fixing of Actuator of control valve.Valve Body size above 8”, upto & including 18"

Removal,Transportation & Fixing of Different Type Flow Meters(Oval gear meter/Magnetic/ Mass)

Removal of Different Type Flow Meters(Oval gear meter/Magnetic/ Mass) size upto & including 4" Irrespective of Pr. Rating

Transportation to & from W/shop of Different Type Flow Meters (Oval gear meter/Magnetic/Mass) Irrespective of Pr. Rating & Size.

Fixing of Different Type Flow Meters (Oval gear meter /Magnetic/Mass) size upto & including 4"irrespective of Pr. Rating

Removal & fixing of Ultra filter

Removal of Ultra Filter size upto & including 4"

Fixing of Ultra Filter size upto & including 4"

Removal & Refixing of orifice plates

Removal & refixing of orifice plates at all elevations in the plant and provision of new gaskets,for following Line size,all pressure ratings up to & including 4"

Fabrication, clamping, supporting, painting of inclined sheds on junction boxes and instruments etc. made of MS angle & aluminum sheet

Size 3 feet x 2 feet

Size 4 feet x 2 feet

Removal,Transportation & Fixing of Displacer type/ capacitance type/ magnetic type / Cappilary type /level transmitters, level gauges, level switches

Complete removal and refixing of displacer type/ capacitance type/ magnetic type / Cappilary type /level transmitters, level gauges, level switches(all sizes and pressure ratings) from various vessels at all elevations in the plant, and to provide new gaskets.

Transportation to & from Workshop of displacer type/ capacitance type/ magnetic type / level transmitters, level gauges, level switches(all sizes and pressure ratings) from various plants.

Removal,Transportation & Fixing of Power cylinders of dampers etc.

Removal and refixing of power cylinders of dampers etc.Upto and including 3" dia.

Removal and refixing of power cylinders of dampers etc above 3" upto and including 6" dia.

Transportation to & from Workshop of Power Cylinder upto and including 3" dia

Transportation to & from Workshop of Power Cylinder above 3" upto and including 6" dia.

Laying of cable trays with proper angle iron supports(welding & grouting included), also proper grouting of old structures for following sizes:

i) 50 mm wide cable tray

ii) 100 mm wide cable tray

iii) 150 mm wide cable tray

iv) 300 mm Wide cable tray

Removal of old corroded cable trays from plant of following sizes :

i) 50 mm wide tray

ii) 100 mm wide tray

iii) 150 mm wide tray

iv) 300 mm wide tray

Laying and clamping of armored signal, power, conduite pipes or thermocouple extention cables

Laying and clamping of armored signal, power, conduite pipes or thermocouple extention cables (armored) with conductor size upto 2.5 mm² on cable trays with proper glanding at both ends. Angles/ducts 2/3/4 core x 0.5/1.5 mm²

Laying and clamping of armored signal, power, conduite pipes or thermocouple extention cables (armored) with conductor size upto 2.5 mm² on cable trays with proper glanding at both ends. Angles/ducts 12/19/24 Core x 0.5 /1.5 mm²

Clamping & fixing of already layed cable in various plants of following sizes having bunch up to 10-15 cables 2/3/4 core x 0.5/1.5 mm²

Clamping & fixing of already layed cable in various plants of following sizes having bunch up to 10-15 cables 12/19/24 Core x 0.5 /1.5 mm²

Removal of signal, power, corroded cables with conduit pipes or thermocouple extention cables (armored) with conductor size upto 2.5 mm2.. The job includes opening of terminals, unclamping from trays or angle irons etc., opening of glands at both ends, Transportation of cables to storage place from site, winding of removed cable on empty cable drums if required.( Irrespective of no. of cores)

Laying and clamping of SS tubes of following size in trays/ducts/angles, making connections at both ends using compression fittings, leakage checking, installation of associated air filter regulators and solenoid valves etc.

6 mm OD SS tube

10 mm OD SS tube

12 mm OD SS tube

Removal of SS tubes upto 10 mm OD size from trays/ducts/angles at any elevation after disconnecting from instruments & Transport to store/Inst. Workshop (if required)

Removal & Fixing up of 2/3 way Ex. Proof electrical junction boxes.

Removal of 2/3 way Ex. Proof electrical junction boxes. The job includes removal of cables from old junction boxes.All cables & JBs to be sent to Store/ Inst.workshop.

Fixing of 2/3 way Ex. Proof electrical junction boxes. The job includes Mounting of new junction box after fabrication and painting of new mounting bracket and cable glanding.

Removal and fixing of 6/8/12 way Ex. Proof electrical junction boxes.

Removal 6/8/12 way Ex. Proof electrical junction boxes. The job includes removal of cables from old junction boxes.All cables & JBs sent to store/Inst. Workshop.

Fixing of 6/8/12 way Ex. Proof electrical junction boxes. The job includes mounting of new junction box after fabrication and painting of new mounting bracket and cable glanding.

Replacement of head bolts of Level Trolls at all elevations in the plant.(Sixteen Bolts per LT)

Removal and refixing of Flange type isolation valves of level trolls, level gauges, level switches at all elevations in the plant, cleaning of end connections and providing new gaskets size upto and including: 50 NB, PN 250.

Removal of Flange type isolation valves of Level Trolls, Level Gauges and Level Switches at all elevations in the plant and providing blind flanges. Cleaning of end connections and new gaskets to be provided Size upto & including: 50 NB, PN250.

Removal, Fixing & Transportation of Differential Pressure / Pressure transmitters /Diaphrams Seal Type Pressure gauges/Thermowells

Removal of Differential Pressure / Pressure transmitters /Diaphrams Seal Type Pressure gauges/Thermowells Diaphragm Seal Type transmitters/gauge with or without capillary with flange size upto & including 80mm

Removal of Differential Pressure / Pressure transmitters /Diaphrams Seal Type Pressure gauges/Thermowells Ordinary Transmitter/Gauge/Thermowells

Fixing of Diaphragm Seal Type Differential Pressure/Pressure transmitters/Pressure gauges Seal Type transmitters/gauge with or without capillary with flange size upto & including 80mm

Fixing of Diaphragm Seal Type Differential Pressure/Pressure transmitters/Pressure gauges Ordinary Transmitter/Gauge/Thermowells

Transportation of differential pressure / pressure transmitter/Pr. gauge to & from Workshop Diaphragm Seal Type transmitters/gauge with or without capillary with flange size upto & including 80mm

Transportation of differential pressure / pressure transmitter/Pr. gauge to & from Workshop Ordinary Transmitter / Gauge / Thermowells

Panel cutting, Job includes hacksaw cutting, edge preparation to make the cutout suitable for instrument mounting.

Fabrication of mounting frames and supports for instruments from angle irons/flats/channels or pipes, applying primer & painting the fabricated frames/supports.

Tightening of flange & replacement of flange gasket for control valve

Tightening of flange of control valve, valve body size up to and including 4 "

Replacement of flange gaskets on both sides of control valve , valve body size upto and including 4"

Removal / fixing of any flange at all elevations in plant

Removal / fixing of any flange at all elevations in plant, pr. rating 600 LBS & size upto and including 2”

Removal / fixing of any flange at all elevations in plant, pr. rating 600 LBS & size above 2”, upto & including 4”

Removal / fixing of any flange at all elevations in plant, pr. rating >600 LBS & size upto and including 2”

Removal / fixing of any flange at all elevations in plant, pr. rating >600 LBS & size above 2”, upto & including 4”

Manpower Assistance as per following forms

Supply of Unskilled Casual Labours for assistance in maintenance jobs of intermittent nature including upkeeping of various instruments & equipments installed in plant for reliable & trouble free operation,during normal running of plant

Supply of Unskilled Casual Labours for assistance during ATA/short shutdown/unforeseen breakdowns

Supply of Electrician (Semiskilled casual Labours) for assistance during ATA/ short shutdown/unforeseen breakdowns as well as during normal running of plant

Supply of Welder (Semiskilled casual Labours) for assistance during ATA/ short shutdown/unforeseen breakdowns as well as during normal running of plant

Supply of Gascutter (Semiskilled Casual Labours) for assistance during ATA/ short shutdown/unforeseen breakdowns as well as during normal running of plant

Supply of Rigger (Semiskilled casual Labours) for assistance during ATA/ short shutdown/unforeseen breakdowns as well as during normal running of plant

Supply of Fitter (Semiskilled Casual Labours) for assistance during ATA/ short shutdown/unforeseen breakdowns as well as during normal running of plant

Supply of Painter Casual Labours for assistance during ATA/ short shutdown/unforeseen breakdowns as well as during normal running of plant

Supply of Unskilled Casual Labours for assistance during ATA/short shutdown/unforeseen breakdowns as well as during normal running of plant as overtime

CHOPRA ENGINEERING WORKS

M/s NEW CALCUTTA ENGG. CO.,

KITTY CONSTRUCTION CO.