How many years is the longest actual service life of a spherical tank that you have seen?
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In the early years, the design drawings for spherical tanks did not specify a service life; later, standards recommended that the design service life be indicated as 25 years. It is unknown what the maximum actual service life is in practice
This post was last edited by CHANGBAISHI on 2019-4-8 at 08:47. The word “recommended” should be used with caution; most of such devices are under the supervision of provincial **safety inspection agencies. As long as the various inspections, flaw detections, and anti-corrosion measures carried out on them meet the required standards, the **supervisory agencies allow them to continue in use. If an objection is raised preventing scrapping, the replacement date should be provided. Oh, generally, steel mills that are over 25 years old are quite common.
Thank you for getting back to me; it’s the first time I’ve heard that it’s been in use for so many years. .
The word \"recommended\" is the standard term; I’ll send you a picture to show it tomorrow. .
The original poster is asking about in real life, whether ball tanks from the 1980s still exist and are still in use.
So far, the longest service life seen is around 20 years.
Thank you to everyone for participating. I just wanted to see if there is any discrepancy between reality and theoretical standards; I will summarize my findings in an article to share with everyone for reference. Thank you all for your participation.
It clearly states the word \"recommended\" on it; the ball tank has a lifespan of 25 years.
It can be inspected and repaired upon expiration to extend its lifespan:lol:lol
For the three types of pressure vessels, the maximum service life is 18 years; those exceeding this period require extra attention during use. The inspection interval is significantly shortened. The amount of medium filled should be kept as low as possible, and the pressure should also be as low as feasible. Use is only permitted after approval by the equipment management supervisor each year