The circular issued by manufacturing units & other authorized  agencies  are included here.

TECHNICAL CIRCULARS

KWU TURBINES- 210/250/500 MW

CIRCULAR NO.

DATE

SUBJECT

X-14- 1 20-9-83 Assay of LP upper part at site –210M KWU Design steam Turbines 
X-14-2 10-1-84  Blanking of Turning gear inlet nozzles 210 MW KWU Turbines  
X-14-3     19-5-84   Alignment of Rotors – Steam Turbine K-210-150 (KWU Design Turbine)  
X- 14- 4    13-8-84   Clearance between casing guide blocks of HP and IP casing and axial  keys at base plate of HP/IP Bearing Pedastal-210 MW Steam  Turbine of KWU design.  
X-14-5    15-7-84 Fouling of IP Cylinder top half with HP-IP-1Bearing Pedestal 210 MW KWU Design Steam Turbine.
X-14-6  10-4-84 Strainer Housing for HRH Strainer and Main Streamline (MSL)  strainer of  KWU design Turbines.  
X-14-7   26-11-84 Direction of Rotation of Jacking Oil Pump.  
X-14-9     4-4-85 Earthing Brushes on Turbine Rotor to protect the Turbine Bearing 210-MW KWU Turbines.  
X-10 2-7-85 Fir-tree Root Blades of LP Rotor 200MW & 500MW KWU Design ST.  
X-11   8-3-85 Bearing Contact Area In KWU Steam Turbines.

X-12   

11-11-85 Assembly Device for valves 210MWST(KWU Design)             
X-13   20-12-85 Monitoring of Turbine Earthing Brush and Insulation at Generator Rear Pedestal.  
X-14-14     28-01-86 Pressure setting of Safety Valves in Jacking Oil system of 200MWKWU Design sets  
     
X –14-16   15.3.86   Additional earthing brush 210 MW ST (KWU Design)  
X-14-18    12.5.87

Welding of Steam Strainers with Blanking  Plates of  M.S . & HRH Lines of  200 MW and 500 MW ST.   

X-14-19    

9.1.88

Crack detection in coupling bolts of Steam Turbine in coupling bolts of Steam Turbine 210MWST& 500MW.   

X-20 -1 18.8 .88   

Insulation of the gear coupling provided between Main Oil Pump (MOP)& HP Rotor K-210-150-ST   

X-21  23.8.88 Conservation of Turbine Rotor Journal.   
X-14-22   23.8.88 Flange connection of Cross Around Pipe 200/500 MW Steam Turbine.   
X-23   1.10.88 Sticking of Stop and Control Valve in 210MW Steam Turbine (KWU Design).  
X-24   16-12-88  Alignment of Main Oil Pump (MOP) with HP Rotor 210/500 MN ST (KWU Design)                                     
X-25  1-5 –89

Three-way oil temperature control valve 210/500 MW Steam Turbines (KWU Design).   

X-26   5-5-89 Checking of bellows in Thrust Bearing Trip Device–  500MW  -  Steam turbine.   
X-27   27-5-89 DETERMINATION OF PERMISSIBLE DIFFERENTIAL EXPANSION LIMITS OF HP, IP AND LP ROTORS AT SITE: 210 / 500 MW STEAM TURBINES (KWU DESIGN).
X-14-28  11-12-89 Removal of sludge from sludge collecting pipe provided before drain Valves (MAL System) 210 / 500MW ST (KWU Design).   
 X-14-29  29-1-90 Use of VPI Power for the Conservation of Pipes –210 MW /500 MW ST (KWU Design).
X – 14 – 30  5.2.90

Inspection of vibration dampers of oil / control fluid (CF) pipe lines of 210/500 MW ST (KWU Design).   

NO.X-31  1.4.90 TSE Thermocouples for IPC-210 / 500 MW Steam Turbine. 
X-14-32  1.6.90 Failure of flexible hoses in Jacking Oil system 210 / 500 MW ST (KWU Design).  
X-14-33  7.9.90 Tripping torque setting in Angle Valves provided in the drain lines and are controlled through ATRS: 210 / 500 MW - (KWU Design). 

X- 34 +

053-0-SG

 12.11.90 

   19.11.90

RECOMMENDATION FOR INSPECTION OF  THREADED FASTENERS IN HIGH TEMPERATURE ZONE.

X-35   27.12.90 Failure of Extraction NRV – Babcock make (Applicable for Korba Hasdeo, Racihur-I, II Wanakbori IV, Farakka,Singrauli 500 MW set). 
X-36   23.04.92  Cover ring of coupling bolts in K-210 & K –500 Steam Turbines.  
X-37  1.7.92 Oil throttle valves at bearing intel-210/500 MW turbine
X-38   7.7.92. Radial Clearance in L.P.T. Blade Plan KWU design Turbine.

X-39     

8.7.92.   Safety Notice
X-40   8.1.93 Some Tips For Smooth Operation Of D.C. Motor Used In Steam Turbine Oil System. 
X-41   23.02.93 Turbine Speed Measurement.   
X-42 5.4.93 Pitting of journals of Turbine rotors.  
 X-43  31.3.93   210 MW-- IMPROVEMENTS IN HOUSINGS OF MS/HRH STRAINERS.
X-44   18.5.93 O & M Manual 210 MW  Steam Turbine Amendment.   
X-45   29.5.93 ESV & IV stop valve servomotors 210 & 500MW Steam Turbines.
X-46 16.6.94. Care  during  oil  flushing.   
X-47   27.6.94. Hydraulic Turning Gear – Steam Turbine K-210-150.  
     
X-49 10.8.94 Non destructive test on journal bearing & thrust bearing pads of KWU design steam turbines during maintenance inspection.
X-50   14.11.94

Machining of Spare Main oil pump bearing No.2 –210 & 500 MW Steam Turbine ( KWU design ).   

X-51 18.11.94

Test instruction for Turbine Stress evaluator (TSE) - KWU Steam Turbines.  

X-52 17.5.95

Recommendation for testing of high temperature threaded fastners during  maintenance inspection.  

X-53 16.8.95. Periodic Inspection Of DC Emergency Oil Pump :210/500 MW Steam Turbines (KWU Design).
X-54 3.8.95 Proper handling of pilot valves at site during erection / overhauling.
X-55 19.8.95

Actions to prevent unallowable heat up through blade windage. - 500 MW Steam Turbine.  

X-56 4 .7.96. Alignment of  rotor lifting of casing 210/500 MW Steam Turbines (KWU Design).
X-57 19 .8.96 Measurement of Joint Gap & Ovality of IP Inner Casing during overhaul – 210 / 500 MW Steam Turbines (KWU Design). 
X-58  1.10.96   Caulking of Grub Screws Fitted in Nuts Items No. 6 Of Emergency Governor (0-11627-01000) And Item No.12 of Main Oil Pump (0-11605-01000).  
 X-59  12.6.97  SLC DC JOP 210/250 MW SETS
X-60 17.6.97 Cleaning Of Steam Turbine Components By Blasting During Overhauling Of The Set.         
X-61

 

20.6.97 Inspection of Main Steam / Hot Reheat Steam Strainer Housings of Steam Turbines (KWU Design) during Overhauling. 
X-62 7.12.98 RADIAL THRUST BEARING.
X-63 6.12.99 Oil Vapour Extraction Scheme provided in Siemens-KWU Steam Turbines.
X-64 9.8.2000.  SLC EMERGENCY OIL PUMP-210 MW (KWU) / 250 MW / 500 MW Steam Turbine.             
HW/HX/FES-INSTR/005   10.05.2002 INSTRUCTION TO PREVENT VACUUM PUMP TRIPPING ON OVERLOAD 
AGM (STE-FES) 14.05.03 SITE REPAIR PROCEDURE FOR REPAIR OF I.P. INLET PIPE BEND (DRG. NO.1-10612-01052) AT BIRSNGHPUR TPS UNIT-3

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