Seeking advice on the key inspection items and methods for regular inspections during equipment use?
Thread Content
Our company has just obtained the renewed certification for the design of high-pressure vessels, but some corrective actions were required; one of these is to specify the items and methods for regular inspections during the use of the equipment This device is a high-pressure vessel with a design pressure of over 20 megapascals, a design temperature of around 200 degrees, a diameter of 700 mm, and no manholes. If any fellow sailor knows, please help. Thank you!
Considering that there are no manholes and access is not possible, the main welds are to be inspected using TOFD; the skirt seats and high-pressure bolts are to be inspected using UT. That’s basically it
This device is a horizontal container; could you be more specific?
The medium is a mixture of nitrogen and hydrogen gases.
Our company has not yet used TOFD for the inspection of welded joints, and the Technical Supervision Bureau in our entire prefecture level city also lacks personnel with expertise in this area; therefore, it is not practical to use TOFD for inspections at present. I also don’t know how much a TOFD flaw detection device costs.
Is this on all the container drawings? How is this possible? It seems to require designers to take on the task of supervision and inspection TSG R7001-2013 Rules for Periodic Inspection of Pressure Vessels; TSG R0002 – Ultra-high pressure. Take a look at the requirements inside. In the absence of corrosion, the thickness can be simply measured. It focuses mainly on the welds, those areas where cracks are likely to occur. Surface inspection is combined with other inspections. Endoscope: to view the interior. Hardness testing of materials, inspection of bolts of grade M36 and above, strength verification, strength testing, inspection of safety accessories, etc
If Tofd City can’t handle it, turn to the provincial office; they didn’t ask you to do it anyway