The construction window for the oil, gas and pipeline works is usually tight, but the piping and equipment support will require the selection of thick pavements that will still need to be analysed from the full operating cycle. In the case of piping for steel pipes, valves, compressor modules and site equipment, this is concerned with “how thick the piping and equipment support will require the choice of pavement boards” and the conditions of control when vehicles enter, are loaded out or the equipment is parked for long periods. The site should first locate the re-routing of vehicles to create a deep path and destroy areas at the grass-roots level where they may occur, and then decide on the use of pavements, leg pads or approved combinations.
The procurement staff shall submit the site map, vehicle watch and crane type, maximum leg reflex, leg spacing, suspension radius, ground-based allowance for pressure, distance from the gutter to the edge, underground pipeline and post-rainfall condition to the request for quotations, and shall mark the repeated traffic of the vehicle to create a deep path and damage potential position at the grass-roots level. The programme can be based on the accounting of the minimum effective area of the leg pads on the basis of maximum retroactivity and durability. For the whole container procurement, the quantity of the container, the pallet or bundle, the offloading equipment, the destination port and the conditions of storage at the site should also be confirmed in advance. In the case of “diplomatic lifting and equipment support requiring the selection of thick pavements”, the information review should also set fixed observation points on the outside side of the shoulder, slope and turn and include missing information as an item to be confirmed in the quotation and construction programme.
Figure: Pipe-loading of steel pipes, valves, compressors modules and site equipment, with a focus on “how thick a pavement needs to be selected for piping and equipment support”
The drainage direction, soft spots and support under the plate should be compared before and after the rainfall, and the water should not be enclosed under the plate. The area of the leg pads is determined by the retroactivity of the equipment and the confirmed base load, and no pavement board automatically replaces the approved hanger operating platform. In cases where vehicle traffic is repeated into deep space and damage has already occurred at the grass-roots level, it is important to first seal the area, lift the floor and drain, and then reconnect it; the reason cannot normally be eliminated by simply cleaning the surface or adding a single sheet. Test-painted records of “plugging and equipment support requiring the selection of thick pavements” should indicate the starting and ending position, vehicle condition and release conclusions to facilitate review as construction conditions change.
Special inspections should be added after extreme weather, equipment anomalies or route adjustments. The use of position markings and fixed view photographs for mid-legs, full exposure, de-drive, mat deformation, deposition, horizontality, cleavage and isolation of persons facilitates comparison of deposition and shift. Cleaning the surface of polymers avoids fire, sharp shovels and violent knocks, creating new cracks and stress concentrations. In the context of “wielding and equipment support requiring the choice of thick pavements”, the inspection forms require that separate vehicles be repeatedly transported to create deep lines and disrupt changes at the grass-roots level, and that the time of return and return be indicated.
A reset is to distinguish between product problems and changes in condition. The original programme may no longer be appropriate if the vehicle is heavy, routed, rainfall increases or cover periods are extended. These changes are recorded together with the results of the implementation of the lowest effective area of the leg pads, based on maximum retroactivity and endurance, and the next time it is known whether the thickness, width, quantity or construction organization should be adjusted. It should also answer whether “the piping and equipment support will require the choice of thick pavement” has been certified for improvement by accounting for the lowest effective area of the leg pads on the basis of maximum retroactivity and durability, avoiding a subjective description of the final item.
The construction, equipment, HSE and logistics team should confirm the use of the same version of data before the procurement is issued. The common dimensions, thickness or reference load range referred to in this paper are not on-site commitments and actual performance is influenced by materials, temperature, foundations, connections and installation patterns, and the recommended results should indicate assumptions and no application.
The following special verifications should be carried out for “the selection of thick pavements for plumbing and equipment support”, in conjunction with the fitting of steel tubes, valves, compressors modules and site equipment: the selection of thickness takes into account both materials, panel structure, dimensions, continuing support at the grass-roots level, temperature, vehicle type and connection mode. 15, 20, 25 or 30 mm may be used as an option for quotations, provided that the final recommendation indicates the assumptions, the basis of the test and the circumstances of the work not applicable.
On-site implementation of the recommendation: The same thickness may be different under different dimensions, material formulations, texture and supporting conditions. The sample assessment should measure the actual thickness and weight and require suppliers to explain the test method, allow deformation and product use limits.
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