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What are the specific requirements for inspecting the equipment foundation before lifting tower-type equipment?
SHT 3510-2011 Code for Acceptance of Construction Quality of Concrete Foundations for Petrochemical Equipment; SHT 3542-2007 Technical Specifications for Construction of Petrochemical Static Equipment Installation Projects
The basic requirements for foundation acceptance are as follows: 1. The foundation construction unit shall submit quality certificates, measurement records, and construction technical documents related to the equipment foundation; the foundation must clearly show the elevation reference lines and vertical and horizontal axes, and the corresponding buildings and structures should also have coordinate axes indicated on them. For the equipment foundation designed to undergo settlement monitoring, settlement monitoring benchmarks should be established. 2. The basic appearance shall be free from defects such as cracks, honeycombing, voids, and exposed rebar. 3. The strength of the base concrete shall meet the design requirements, and the surrounding soil shall be backfilled, compacted, and leveled. 4. Oil, gravel, soil, standing water, and other contaminants on the surface of the equipment foundation as well as in the holes reserved for the anchor bolts must be removed completely. The threads of the embedded bolts and their nuts must be properly protected. The surface of the foundation where the shims are to be placed should be leveled, and its area should be larger than that of the shims. 5. The deviations in the dimensions and positions of various components of the foundation must not exceed the relevant specifications