Lining ring flange equipment leak detection
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This post was last edited by kareale88 on 2019-5-9 14:09 bg4.png There is a refined tank, the equipment flange adopts NB/T47023-2012:C-FM/M1300-1.0, and the lining ring is S30408. Could you please tell me?: 1. When should the ventilation inspection of the lining ring sealing surface and liner weld seam be carried out? ； 2. Are the equipment flange, cylinder and lining ring all welded before processing the sealing surface? ； 3. Should the non-destructive testing and hydrostatic test of the inner cylinder circumferential seam be performed before or after the liner is welded? If the circumferential seam is water tested before the liner is welded, is the water test still required after the liner is welded?
3. Should the non-destructive testing and hydrostatic test of the inner cylinder circumferential seam be performed before or after the liner is welded? If the circumferential seam is water tested before the liner is welded, is the water test still required after the liner is welded? I find it strange. According to what you said, the inner cylinder is welded and pushed into the outer shell as a whole? So precise! Do you still want to press the inner cylinder before putting it into the outer shell? How much pressure? How to suppress it? Do you still need to do non-destructive testing RT?PT?
Quality guaranteed! Process department control!
This post was last edited by cxd11888 on 2019-5-10 07:52 1. When should the ventilation inspection of the lining ring sealing surface and liner weld seam be carried out?； Ventilation testing should be carried out after the sealing surface lining is ring welded and finished. 2. Are the equipment flange, cylinder and lining ring all welded before processing the sealing surface? ； After the flange and lining ring are welded and inspected, the sealing surface will be processed and passed. 3. Should the non-destructive testing and hydrostatic test of the inner cylinder circumferential seam be performed before or after the liner is welded? If the circumferential seam is water tested before the liner is welded, is the water test still required after the liner is welded? The non-destructive testing of the inner cylinder is carried out after the girth seam welding is completed and before the lining cylinder is assembled and welded. ； The hydrostatic test is carried out after all welding work is completed ； If the circumferential seam is water tested before the lining is welded, the water test must be done after the lining is welded.
1. After the flange and lining ring, cylinder (or head) and liner are welded, ventilate and inspect the weld quality. 2. Whether secondary processing of the sealing surface is required depends on the deformation after welding. Of course, if conditions permit, secondary processing will be done. 3. The circumferential seam welding of the flange and the shell is completed, and non-destructive testing will be performed after the surface inspection is qualified. The hydraulic pressure test is performed after the inner cylinder is completely manufactured, and there is no need to conduct it a second time.