The entrance of the often pressure-relief devices often cycle corrosion monitoring probe specific implementation monitoring

1) at the top of the often pressure-relief devices often circular entrance and top oil and gas entrance, often containing S sewage tank outlet and cold 117-1 oil and gas entrance installed resistance probe. A batch of data acquisition on a regular basis, and then analyze the data. Found the abnormal situation timely inform the production department and put forward the reason analysis;

2) in normal pressure tower department, often one and the bottom, vacuum distillation tower overhead, oil-water separator and bottom with more than 10 kinds of materials more than 200 piece hanging piece. By coupon test, understand the different materials in these areas of uniform corrosion, stress corrosion cracking, stress corrosion crack extension, and whether the material performance changes, and so on and so forth;

3) in the important key position to implement fixed-point thickness. Thickness point in principle set up in the elbow part, the part of the liquid level fluctuation often, easy corrosion and erosion of parts and manufacturing time molding parts of thinning, use of deformation area and the surface defect inspection parts in doubt. Apply to "residual life assessment process" is calculated for each point of the corrosion rate and judge the danger point on the line;

4) corrosion monitoring probe in refining units to establish bypass corrosion test kettle, open the test at any time according to need to inspect and test kettle hanging bolt in the kettle. This approach to the checkpoint corrosion and stress corrosion, etc. It's convenient. Two test kettle installed in atmospheric and vacuum device of the vacuum distillation tower feed tube and the vacuum distillation tower minus one line. Two kettle, hang a tensile test piece, impact, and uniform corrosion) specimen, C, U type ring and WOL etc. More than 300 pieces. Anatomical analysis of the bolt is to guide the safety production and obtained many precious materials performance data.

5) using the instantaneous corrosion rate meter (CMB - 1510 - b) decompression for atmospheric tower and tower water reflux tank to regular monitoring, according to the measured corrosion rates combined with total Fe, Cl -, PH value judgment on the top of the corrosion conditions and corrosion inhibitor additive, in order to effectively control the corrosion rate is less than 0.2 mm/a.