Post on 30-Dec-2015
description
transcript
Revamping of the Vacuum Distillation Unit
Piping stress and strength calculation of 30 pipelines according to B31.3.
Medium: process gas, heavy vacuum gas, vacuum residue
Loads:- Temperature (up to 400°C)- Pressure (up to 4 MPa)- Wind (160 km/h)- Seismic load (UBC 1997 – Seismic zone 3)
Types of performed hospitalizations:- nozzle loads reduction- stress peak reduction- displacements reduction during occasional loads
Types of changes:- change type of supports - adding new supports - change of piping geometry
Hot Reheated Steam Piping
Stress analysis of Hot Reheated Steam (HRH).Branch from two boilers to turbine body and to condenser calculated according to B31.1. Support design evaluated.
Medium: superheated steam
Loads:- Temperature (570°C)- Pressure (2,65 MPa)- Wind (110 km/h)- Seismic load (UBC 1997 – Seismic zone 2A)
Types of performed optimalizations:
- boilers, condenser and turbine loads reduction
- stress peak reduction
- displacements reduction during occasional loads
Types of changes:
- change type of supports
- change of piping geometry
LP Steam Piping
Stress analysis of LP Steam. Branches from two boilers to turbine body and to deaerator according B31.1. Support design evaluated.
Medium: LP steam
Loads:- Temperature (314°C)- Pressure (0,96 MPa)- Wind (110 km/h)- Seismic load (UBC 1997 – Seismic zone 2A)
Piping of Coke Removal Unit
Stress analysis pipelines according to B31.3
Medium: quench oil
Loads:- Temperature (200/350°C)- Pressure (1,25 MPa)- Wind (45 m/s)- Seismic load (UBC 1997 – Seismic zone 2A)
Types of performed optimalizations:
- nozzle loads reduction
- stress peak reduction
- displacements reduction during occasional loads
Types of changes:
- change type of supports
MUG drying piping systems
Stress analysis pipelines according to B31.3
Medium: liquid ammonia
Loads:- Temperature (up to 55°C)- Pressure (up to 36 MPa)- Wind (160 km/h)- Seismic load (UBC 1997 – Seismic zone 2A)
Piping of Heating Station
Piping stress and strength calculation after reconstruction according to B31.3. Spring hangers design evaluated.
Medium: steam
Loads:- Temperature (250°C)- Pressure (0,3 MPa)
Pipeline Connected to Vacuum Column
Piping stress and strength calculation pipeline connected to vacuum column according to B31.3and attached nozzles according to EN 13445.
Medium: gas hydrocarbon
Loads:- Temperature (395°C)- Pressure (0,27 MPa)
Auxiliary pipe system of main coolant pump
Piping stress and strength calculation auxiliary pipeline connected to main coolant pump according to NTD (Russian standard for Nuclear Power Plant).
Medium: demineralized water
Loads:- Temperature (up to 150°C)- Pressure (up to 24,5 MPa)
Hot water transferring pipeline
Piping stress and strength calculation pipeline according to EN 13480.
Medium: water
Loads:- Temperature (80/140°C)- Pressure (1,6 MPa)