PLANT STANDARD HYDERABAD
PRODUCTS AND THEIR COMPONENTS 1.0 SCOPE:
5.0 PRECAUTIONS DURING STORAGE
The following special precautions shall be taken during storage:
a) Instruments: Instruments shall be stored within the original packing boxes as far as possible. Instruments shall be handled carefully. They shall not be stacked on over the other. The cables shall not be twisted.
b) Pipes: All pipes upto &including 25mm OD shall be stacked in suitable racks to facilitate access and handling. Pipes above 25 mm OD shall be stacked on wooden sleepers to prevent ingress of dust & moisture. Pipe openings shall be closed with suitable plugs/caps. Deformity during storage shall be avoided. Heat exchangers tubes shall be stored within the original cases in which they are received.
C) Rotors: The rotors shall be stored in the original packing boxes. The turbine and compressor rotors shall be rotated once in 3 months to avoid sag due to long storage.
i) It shall be rotated by 180 deg, after its receipt at site.
ii) It shall be rotated by 90 deg, after 3 months.
iii) It shall be rotated by 180 deg, after subsequent 3 months.
iv) It shall be rotated by 90 deg, after subsequency 3 months.
Copyright and Confidential The information on this document is the property of BHARAT HEAVY ELECTRICALS LIMITED. It must not be used directly or indirectly in any way detrimental to the interest of the company.
HY0490564
i) The parting planes of casings shall be kept on the top to the extent possible. If the casinghas to be kept in inverted position due to unavoidable reasons, the parting planes shall be kept on dry wooden beams. Rubber pads or grease or oilimmersed felt shall be kept between the parting plane and contact surfaces to protect the surfaces.
e) Auxiliary Pumps
If the pump is kept idle for 6 months, the bearings of the pumps shall be cleaned and the shaft shall be rotated after pouring oil into the lubricating chambers.
f) Electrical components:
The Handling, storage and preservation of Turbo-generators and auxiliaries shall be as per product standards TG55500 and TG55501.
g) Operating Mechanism of switchgear
The heater shall be switched ‘ON’ in cold and humid conditions.
h) H2 seal oil system components, air coolers and accessories, valves.
All openings shall be closed with suitable blinds/plugs/caps to prevent the entry of dirt, foreign matter and moisture.
i) Rubber gaskets and other miscellaneous items.
All rubber gaskets shall be applied with a coat of french chalk. Care shall be taken to prevent twisting, deformation and stress during storage. They shall be stacked separately to prevent damage.
j) Foundation Frames
The frames shall be placed over the wooden sleepers at a number of points interposing 10 mm rubber sheets at the resting places. No other load shall be placed over the frames to prevent permanent deformation.
k) The original steel blanking plates shall be fastened with hardware and sent along with the equipment from the plant. They shall be retained during the entire storage period and removed only at the time of erection.
6.0) NOTE
1) Refer Plant Standard Hy 0490562 for ‘Preservation of Heat Exchangers before shipment.
Copyright and Confidential The information on this document is the property of BHARAT HEAVY ELECTRICALS LIMITED. It must not be used directly or indirectly in any way detrimental to the interest of the company.
HY0490564
Details of components/parts Type of storage
Remarks INDUSTRIAL TURBINE & COMPRESSORS
Instruments like Electromagnetic protection, vibration measuring equipment, Eccentricity
mesuring equipment. P
Maximum Temparature 20º C. Temparature deviation in 24 hours shall not exceed 5º C. Humidity less than 40%.
Assembled Compressors & Turbines, Rotors, Casings, Valves, Bearing Pedestals, Bearings, Gears, Parting plane bolts, Servomotors (Hydraulic actuators), Inspection shaft with its rings & all precision mechanical equipment, bolts heating equipment, Thermometers, Pressure gauges, mano stats etc.
Q
Oil Tanks, oil coolers, Turbine and Compressor Covers, Injectors, Piping and safety membranes, bearing covers Fasteners, oil seals, Couplings etc.
R
Pipes, Flanges, Channels, Sheets etc for construction purpose at site. hours shall not exceed 5ºC.
Humidity less than 40%
Rotors, HP & MP casings, HPQC stop and governing, valves LPQC inspection valves, Bearing pedestals, Bearings, Non- return valves, Parting plane Bolts, Servo – motors, jacking oil pump with its rings, Inspection shaft, Middle LP Body, Bolt heating equipment, Thermometers, Pressure Gauges, manostats etc.. Front and rear LP top and bottom parts.
Q
Copyright and Confidential The information on this document is the property of BHARAT HEAVY ELECTRICALS LIMITED. It must not be used directly or indirectly in any way detrimental to the interest of the company.
HY0490564
REV. NO.01
PLANT STANDARD HYDERABAD
PAGE 5 OF 7
Details of components/parts Type of
storage
Remarks Main oil Tank, Auxillary Oil Tank, Oil coolers,
Turbine Cover, Injector, MP upper and Lower tube fittings, interconnecting piping and safety
membranes, piping outside the pedestal, Foundation bolts etc.
R
GAS TURBINES
Rotor, HP & LP journals and thrust Collars Base plate.
Fasteners, external & internal Threaded surfaces
Q
ELECTRICAL MACHINES
Instruments, Thermometers, Pressure Switches, Flow Switches, Rubber and Neoprine, gaskets, ‘V’
Belts, Stator, Rotor, Bearing pedestals, Bearings, tube oil console with motors, Non return valves, Air coolers, co2 equipment, shaft driven oil pump with pulleys, precision components and machined parts.
Q
Oil coolers, Fasteners, Lube oil Piping & Cooling water piping, erection fixtures like Tackles,
Mounting Blocks, Extension Beam and MS sheets, outer covers Erection fixtures
R
Transport Frames, Stands, Plates, Foundation Frame.
S
Copyright and Confidential The information on this document is the property of BHARAT HEAVY ELECTRICALS LIMITED. It must not be used directly or indirectly in any way detrimental to the interest of the company.
HY0490564
Rev. No.01 PAGE 6 OF 7
PLANT STANDARD HYDERABAD
Details of components/parts Type of
storage
Remarks TURBO GENERATORS & AUXILIARIES
Stator with transportation frame, Rotor, Exciter stator & Gear Box Assy, Exciter Armature, output leads, AVR Cubicle, Field Breaker Cubicle, AVR Accessories, Gas and oil panels, Field Rheostat, Rotor Temperature recorder, Gas and oil panel, Relay control panels HGL components, Internal covers, Rubber packings.
End shields, Body of sealings, Bearings, Fan blades, H2 coolers Brush gear, stilling tank, seal oil unit, vacuum unit, PMG, Air coolers, Exciter rear Bearing and Assy, Thermometers.
Q
Foundation Frame, Foundation Bolts and Base plates, Mounting Extension and intermediate piece, stand and yoke, Mounting Truck, Covers, Piping Air proof door, supporting frame, slide valves suspension device, Fasteners.
R
SWITCH GEAR
Spare items like interrupter assy, fixed contact Assy, moving contact assy, Lam washer, interrupter Disc.
Q
Poles of circuit Breaker, operating Mechanism, Base Frame, Structure details
R
BOWL MILLS Q
PUMPS
Axial shift indicator, Reverse Running inidcator, vibraton Monitor instrument.
Copyright and Confidential The information on this document is the property of BHARAT HEAVY ELECTRICALS LIMITED. It must not be used directly or indirectly in any way detrimental to the interest of the company.
HY0490564
REV. NO.01
PLANT STANDARD HYDERABAD
PAGE 7 OF 7
Details of components/parts Type of
storage
Remarks Instruments, Pressure gauges, Pressure switches,
Temperature gauges, Temperature switches, RTDs, Assembled pumps mounted on their individual foundation frames, Drive Motors, Hydralic couplings, connecting couplings with protective gaurds, all types of valves along with actuvators, oil and water coolers, all spare parts except instruments, special tools for maintenance of pumps including pump assy & dismantling fixtures, local panel, column pipes, Discharge Elbows, Foundation ring shafts, Condensate tank/canister, Local panel.
Q
Foundation Bolts, fabricated grillages, common for Boiler feed pumps, Hydraulic coupling BFP Motor and Booster pump.
R HEAT EXCHANGERS
Surface condensers and its parts like water
chambers, shells, springs, superstructure, Hotwell, Instruments, steam jet Air ejector, and spare nozzles, L.P. Heaters, Chemney steam Condenser, Gland steam Condenser, H.P Heaters, Deaerator and its parts like storage tank, Header Assy, Vent Condenser and its parts like instruments, safety valves, oil coolers, Air coolers, Hydralic coolers, Vacuum pumps, HE tubes
Q
Copyright and Confidential The information on this document is the property of BHARAT HEAVY ELECTRICALS LIMITED. It must not be used directly or indirectly in any way detrimental to the interest of the company.