When installing a centrifugal compressor without shims, should the shims or jacks used for temporary adjustment be removed?
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When installing a centrifugal compressor without shims, can the wedges or jacks used for temporary adjustment be left in place? Appendix C of the \"SHT 3538-2017 General Specifications for Construction and Acceptance of Petrochemical Machinery and Equipment Installation Projects\" specifies in C.3 that the secondary grouting layer should be filled with slightly expandable concrete or shrinkage-free cement mortar and then compacted. Once this secondary grouting layer reaches 75% or more of its designed strength, the jacks or temporary shims used to hold it in place should be removed to fill any voids, or the set screws should be loosened and the levelness checked again. Is it possible to pour the shims or jacks together into the secondary grouting layer, without removing the temporary shims or jacks used for adjustment?
Sure, there’s nothing that’s not possible. Just do it if you want to. You have control over your company, you have control over your territory!
Installation without shims is a method that saves on the use of shims
No, the coefficients of thermal expansion are different; this can lead to vibration during operation, and it is difficult to identify the source of the problem
If the installation specifications for shims are followed without using temporary shims, and the position where the temporary shims are placed is different from that specified for the permanent shims, it is best for the temporary shims to be under stress after casting
No, the coefficients of thermal expansion are different