Aiming at the difficulties of radiographic detection to girth weld of steam-water separator which has no manhole or detectionhole in power plant.

The numerical simulation and experimental research of steam-water separator with cor- rugated plate is carried out in this paper.

On the primary and secondary steam separator with a water defector in a steam generator for PWR;

Analysis is carryied out with 3-dimension FEM for super critical boiler’s thick-wall parts stress fields by inside pressure,the steam separator’s stress concentrating factor is calculated.

The paper takes the steam separator of 600MW supercritical boiler as subject investigated, and builds a 3D computation module, with the finite element method, we calculate the temperature field, thermal stress field, mechanical stress field and the whole stress field of the steam separator in the process of cold start-up, analyses the law change in temperature field and stress field.

This paper first makes a theoretical analysis of the stress field of steam/water separator, an important pressure-bearing p.

During viscous crude oil steam flooding,a high pressure steam water separator is introduced to improve steam quality and then enhance recovery factor.

But the neglect was wrong in measurement for water separator level in ultra-supercritical unit, because of the small size of water tank and high steam pressure.

The internal pressure stress distribution and stress concentrations for the water separator of a 600 MW supercritical boiler are analyzed by the finite element method.