Some related questions regarding whether design is required after a change in the medium stored in the tank
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This post was last edited by hnan on 2018-2-2 at 14:28. During the operation of storage tanks, we often change the medium stored in them due to adjustments in market supply and demand. I have a few questions I’d like to ask everyone. 1. When changing the medium stored in an atmospheric-pressure tank, is it sufficient that the saturated vapor pressure of the medium to be stored is less than 88 KPa in order to make such a change? 2. Is it necessary to have the design institute redo the design and produce new drawings after the medium is changed? 3. Is it necessary to file a record with the equipment inspection authorities or the safety supervision authorities after changing the medium?
Changes in the medium have a significant impact. For example, 1. Changes in the density of the medium determine whether the wall thickness meets the requirements for strength calculations; 2. Changes in the properties of the medium also require an assessment to determine whether additional measures such as nitrogen sealing, vent valves, or fire protection systems are needed； 3. Regarding the degree of medium toxicity, it is necessary to consider whether additional cofferdams or protective structures are required; there are quite a few factors to take into account, and it’s best to have the design institute confirm this.
Currently, tank design generally should be based on the density of water, except for oils with higher densities (as water is needed for floating pad lift tests); therefore, in most cases, density has little impact. The key is what standards the expert team uses during the inspection, as they need to check the procedures. So what kind of documentation or design is required after changing the medium is what I want to know. Should it be the safety supervision department, environmental protection agency, boiler inspection office, or some other authority that handles the registration, or should the design institute issue new design changes or blueprints?
Generally, it is not necessary for the design institute to produce new drawings, but an approval process from the design institute should be required
So, what change procedures are required for the expert team to conduct an inspection?
Is the so-called expert group **behavior? The documents from the design institute should be recognized, right?
Of course, they come to check every now and then; if it doesn’t meet the standards, a fine is imposed. . . . Therefore, it is essential to complete all the necessary procedures and ensure that there are no major hazards on site. The design institute should be able to do it, but it probably will cost money. . . . When it comes to money, everything becomes difficult to handle
Actually, bringing up the money makes things easier; if you don’t bring it up, things get difficult.
The proper procedures should be followed, with confirmation from the design institute
The design institute issues documents – it’s only right to charge money for that, right? ;P