Criteria for Disposing of Pressure Vessels
Thread Content
In renovation or hazard remediation projects, the issue of whether pressure vessels should be scrapped often arises. If a pressure vessel is to be declared unusable, what standards or criteria should be used as a basis? I’ll throw out a brick first. 1. Safety. The testing agency measures the wall thickness of the equipment and makes a judgment based on that thickness. But what should be done in the case of existing equipment where the owner is unwilling or unable to stop production for inspection? What should be done with unregistered pressure vessels? 2. Cost-effectiveness. For equipment that has been in use for over 20 years, the frequency of inspections needs to be increased; requirements may vary from place to place. Here, the requirement is at least two inspections per year (no such specific requirement can be found in standards and regulations), which increases operating costs. Please, fellow sailors, let’s discuss this together and pool our ideas!
Please refer to the relevant provisions in Chapter 8 of TSG 21-2016, \"Safety Technical Inspection Regulations for Fixed Pressure Vessels\".
Yes, as stated on the second floor, it is necessary to make a determination in accordance with the rules for regular inspection of pressure vessels; this decision must be made by the supervisory inspection authority, and one cannot decide on their own whether the vessel should be scrapped or continued in use.
Safety encompasses multiple aspects; wall thickness inspection is just a basic requirement. There are also macroscopic inspections, detection of surface defects and hidden defects, material analysis, and many other elements.
It is determined by the inspection department; one cannot decide on their own whether to scrap it or continue using it.
It can’t be used; it won’t work even after repair – it’s completely useless!
Now, there’s no need to stop the vehicle when measuring thickness; an ultrasonic thickness gauge is sufficient.
Now, containers also have a designed service life; once that period expires, they can no longer be used. Even if one wants to continue using them, some procedures would likely need to be followed
It isn’t up to anyone to decide whether it can be used; as long as the pressure vessel meets the relevant requirements for safe use (primarily those specified in TSG21-2016), it can be used. The book also contains clear requirements and provisions regarding whether the owner is willing to suspend operations for inspection or if an inspection cannot be carried out. This is a mandatory inspection, and it has nothing to do with whether the owner agrees or not
The person on the 10th floor is right; it’s not a matter of whether you want to or not, but rather whether the pressure vessel meets the relevant safety requirements for use. Those that need to be scrapped must be scrapped – there’s no room for ambiguity!