ERECTION SEQUENCE , PLAN ,TOLERENCES OF ID ,FD,PA FANS FOR THERMAL POWER PLANT

SEQUENCES  OF ACTIVITIES OF 'PA' FAN ASSEMBLIES - AXIAL                     MAJOR ACTIVITIES Foundation: checking of   axis of pockets & elevation Foundation: Hammer dressing for primary packers Packers preparation for Impeller Housing Suction Chamber & Diffuser Shims: Preparation  Primary packer Blue matching for Impeller. Housing   Primary packer: Alignment  Impeller Housing: lower part Erection and levelling Impeller Hub: Erection   Suction Chamber: Erection  Diffuser assembly: Erection   Intermediate shaft with shaft cover Erection Measurement of shaft ends and couplings of motor & bearing Heating & fitting of couplings of motor & fan shaft Motor Sole plate: Blue matching Motor: Placement   Foundation Spring releasing Levelling of impeller hub Alignment of Regi-flex coupling Grouting of primary packers and sole plates Motor Sole plate: Grouting Motor Decouple and Trial run Final alignment after trial run Impeller blades: Mounting as per serial number & checking Out let guide van assembly: Erection   Fitting of actuator assembly accessories & welding Completion of actuator assembly fitting with setting shaft & checking Expansion Joints:Between silencer & suction chamber Silencer assy pre-assemble and welding Transition piece pre-assemble and welding Suction hood and Roof pre-assemble & welding Erection of Total Silencer assy over column  LOS Base levelling & grouting ( LOS= Lubrication oil supply unit) LOS pipping fitting, welding & Acid cleaning LOS pipping erection  LOS motor decouple and trial run LOS Oil cooler Hydro test LOS Oil flushing Fitting of C & I Instruments over bearing Box up of Fan assy Expansion Joints:Between suction chamber & Bearing Housing Expansion Joints:Between Bearing Housing & Diffuser assemblies Final checking inside the Fan assembly Trial run of Fan  Insulation of Silencer assy and Fan assembly. SEQUENCES  OF ACTIVITIES OF 'ID' FAN ASSEMBLIES - AXIAL                                 MAJOR ACTIVITIES Foundation: checking of   axis of pockets & elevation Foundation: Hammer dressing for primary packers Packers preparation for Impeller Housing Suction Chamber & Diffuser Shims: Preparation  Primary packer Blue matching for Impeller Housing   Primary packer: Alignment  Diffuser assembly: Erection   Impeller Housing: lower part Erection and levelling Out let guide van assembly: Erection   Radial seals I and II Erection Impeller Hub: Erection   Impeller Housing: Upper part Erection  Suction Chamber: Erection and welding  Intermediate shaft with shaft cover Erection Measurement of shaft ends and couplings of motor & bearing Heating & fitting of couplings on motor shaft Fitting of spacer coupling on fan shaft Motor Sole plate: Blue matching Motor: Placement   Impeller blades: Mounting as per sl.no. & checking Foundation Spring releasing Levelling of impeller hub Alignment of Regi-flex coupling (motor with fan) Grouting of primary packers  Motor Sole plate: Grouting Motor Decouple and Trial run Final alignment after trial run Fitting of actuator assy accessories & welding Completion of actuator assy fitting with setting shaft & checking LOS Base levelling & grouting LOS pipping fitting, welding & Acid cleaning LOS pipping erection  LOS motor decouple and trial run LOS Oil cooler Hydro test LOS Oil flushing Sealing / cooling fan Erection and grouting Sealing / cooling fan pipping fitting & welding Sealing / cooling fan trial run for pipe flashing Fitting of C & I Instruments over bearing Box up of Fan assembly Expansion Joints:Between suction chamber & Bearing Housing Expansion Joints:Between Bearing Hosing & Diffuser assembly Final checking inside the Fan assembly Trial run of Fan  Insulation of Suction camber and Fan assembly. TOLERANCES OF ERECTION FOR PA FANS   Vertically of the housing. (Tolerance : 0.04 mm / M).    Axial clearances (C) between bullet and hub / impeller housing and hub (Tolerance : ± 3 mm). Axial clearances (D) between hub & housing / hub & diffuser core (Tolerance : ± 3 mm). TOLERANCES OF ERECTION FOR ID FANS Rotor level / vertically of the housing.(Tolerance : 0.04 mm/M). Axial clearances (C) between bullet and hub / impeller housing and hub (Tolerance : ± 3 mm). Axial clearances (D) between hub & housing / hub & diffuser core (Tolerance : ± 3 mm).             P.S If  you are looking to earn few legitimate extra money from the comfort of your home then please click on the link given below LINK 1 - PLEASE CLICK HERE  LINK 2 - PLEASE CLICK HERE