Regarding the “visual inspection” for pipeline pressure testing?
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The testing methods for pressure testing packages submitted by the construction party include hydraulic pressure, pneumatic pressure, and visual inspection. Upon checking the standards, there is no mention of \"visual inspection\"; does anyone here know this method of pressure testing?
I’m not sure; from what I can tell, most companies use hydrostatic testing, as it is safer and suitable for most industrial pipelines. Pneumatic pressure can be used for instrument air and steam pipelines.
Visual inspection means that no pressure testing is required; only the appearance of the pipe welds and the base material is checked to determine whether the pipe is qualified
Agreed, it might be a pipeline for direct drainage of the open area.
It refers to those pipes that do not require leakage tests; only a water filling test is carried out, and it is sufficient if no leakage points are visible to the eye.
Is there an option for visual inspection? I haven’t heard of it either! Hydraulic testing and pneumatic testing are quite commonly used!
Visual inspection refers to the observation during the pressure testing process, to check for any leaks; minor leaks cannot be detected by gauge pressure
It should be static pressure; in some projects, VT or NT is used to represent it!
There’s probably no such thing as a visual inspection. This method of checking bags by pressure testing can only indicate one thing: the person doing the inspection is too lazy
Visual inspection refers to observing the appearance-related issues such as deformation and leakage of pipes and fittings during the pressure testing process.
I haven’t heard of any visual inspection; it’s probably to check for any obvious deformation or leaks.
Actually, it’s not necessarily done by visual inspection; there’s also the In-Service method, which involves checking the system while it’s in operation. This is something specified in American standards, but it’s not clear whether pressure retention testing is also part of it. This testing uses a lower pressure than that used for hydraulic or pneumatic tests, and it’s a simpler procedure used for water pipes and air pipes
Generally, pressure tests are carried out using water pressure or air pressure, and visually, it is checked whether there is any obvious deformation in the pressure vessel.
I haven’t heard of it. Could someone explain it in more detail? I’ve studied * it.
In some other projects, there are numerous pipelines for venting, discharge, and safety valve venting, which do not require pressure testing; however, the as-built documents must still include information related to these pipelines. As a result, they added an additional inspection step, which involves only conducting visual inspections of the welds on such pipelines, as well as checking the pipe supports and hangers. I wonder if the seniors have any explanations
It seems to be part of a water pressure or air pressure test; perhaps the pipes are too long, making it unsuitable to use a pressure gauge, or it’s for pipes with lower requirements, such as rainwater pipes
I’ve never heard of visual inspection; who can provide convincing reasons to define what visual inspection entails?
Do you mean kerosene leak testing? There is no such term