residual life assessment (rla) based renovation ... - India Core

More documents

Recommendations

Info

III DETAIL-II U-RING HPT EXHAUST ELBOW FIGURE- 8 International Conference & Exhibition India Thermal Power-4 Page 20 of 22
6.6 RLA BASED REPAIR / REPLACEMENTS OF THE COMPONENTS / ASSEMBLIES The major assemblies / components, such as given below, shall be subjected to RLA Study: IP Outer Casing LPT Inner-Inner Casing, Guide Blades, guide Blade carriers, Gland Seal Housings. Cross Around Pipes (CAP) ESV & Control Valve Steam chests of HPT as well as their Internals. IV & Control Valve Steam chests of IPT as well as their Internals. Main Steam (MS) / Hot Reheat (HRH) Steam Strainer Housings & their Strainer elements. Turbine Bearings 6.7 ADVANTAGES: It gives following advantages over existing turbine: Reduction in specific heat consumption. Increased power output Renewed blade lifetime. Life extension of steam turbine. For ease of assembly & dismantling of HP Inlet assembly, the buttress threads of 580x20 have been provided on HP Outer Casing & Breech nuts in place of existing buttress threads of 580X9. The HPT Exhaust Elbows assembly has been provided with U-Ring in each exhaust connection in place of Serrated Gasket provided earlier thus increasing reliability of the assembly. International Conference & Exhibition India Thermal Power-4 Page 21 of 22
Page 1 and 2: RESIDUAL LIFE ASSESSMENT (RLA) BASE
Page 3 and 4: The components & zones identified a
Page 5 and 6: After thorough cleaning of the roto
Page 7 and 8: Reduction in pressure drops. Reduce
Page 9 and 10: HP CASING LINER ROTOR Fig. 1 : Exi
Page 11 and 12: FIG.3-A: DETAILS OF EXISTING DESIGN
Page 13 and 14: Main Steam / HRH Steam Temperature:
Page 15 and 16: 6.0 BHEL’S PROPOSAL FOR R&M OF 20
Page 17 and 18: CYL PIN BREECH NUT OUTER CASING GUI
Page 19: 6.4 THERMAL INSULATION: Mineral woo

residual life assessment (rla) based renovation ... - India Core

Create successful ePaper yourself

Delete template?

Save as template?