Regarding doubts about pipe stresses and nozzle stresses: are the thickness of the equipment flange opening and the reinforcement plates on the flange nozzles provided?

5. Will the stress at the nozzles of the tower affect the installation of the foundation bolts? Or are it the basic depth settings? If there is an impact, when should a request be made? Should the pipelines be handed over to the equipment team or the equipment team to the civil engineering team? Or is it based solely on experience during the design phase? If there are any standards, which ones should be referred to?

It would be better to move this topic to the devices section, what do you think?

Communication: Question 1: For high-temperature pipelines, the piping layout is determined by considering the process flow and the location of the pipe galleries. After selecting the appropriate materials and pressure ratings based on the operating conditions of the medium, a preliminary piping plan is established. Stress calculations are performed for large-scale high-temperature pipelines, and the stress is reduced by installing necessary supports, hangers, and expansion compensators to keep the maximum stress within specified limits. The simple method is to use pipeline stress calculation software. 2. Stress control at the equipment nozzles involves two approaches: increasing the strength and stiffness of the nozzle area itself to reduce pipeline stress. The basic requirement for the thickness of equipment flanges is to meet the pressure rating at the corresponding temperature. If it is a large-diameter pipe with low or normal pressure and thin flanges, it is possible to consider raising its grade and increasing its stiffness during equipment design, in order to reduce the higher stress requirements imposed on the pipeline. The equipment design should provide the piping department with the force and torque requirements for each pipe connection in three directions, so that the piping department can take measures during piping to meet these stress requirements. 3. When designing the equipment, it is essential to ensure that the stress requirements for the pipe connections are feasible, so as to prevent the piping department from being unable to meet them or having to incur high costs to do so. Under these conditions, the equipment should be ordered, with the remaining tasks to be handled by the piping specialists. 4. From a process perspective, it is reasonable to minimize the length of the pipes ； But in situations where temperature compensation is necessary, bends are often added to the pipes to achieve this purpose; in such cases, it makes sense to change the orientation of the pipe nozzles in the tower. 5. High stress at the pipe nozzles not only affects the equipment housings connected to these nozzles but also has a significant impact on the bending moments in the tower, which in turn affects the placement of the foundation bolts

The specific stress conditions at the pipe ends need to be determined using calculation software, based on the pipe layout and fluid operating conditions. For the tower, the initial design drawings are sent out along with the equipment, and the specific loading conditions are provided during the construction drawings phase.

It feels so luxurious; I’m really like Granny Liu entering the Grand View Garden – I don’t understand anything at all

I’ve learned that the pipe opening can affect the foundation bolts of the tower; it’s better to calculate the requirements for civil engineering based on the larger value, as this makes it easier to make adjustments if the bolt size needs to be reduced later on, rather than increasing it

To understand where the stress comes from, one must first eliminate it through their own design; if that’s not possible, external forces can be utilized