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These should also be employed for sections inslalled by thrusl boring or similar means.
BS ISO – Petroleum and natural gas industries. Piping
The 5ite owner should be required to lurnish details 01 all other actual or planned buried services including cables and all roadways or other surface loads within the construction working width or 20ne 01 the izo pipe. This may not be easy to demonstrate il substitute standards are selected from a variety 01 origins.
Tankage areas Additional considerations A. Pipe lracks should nol encircle equipment. The bore of the piping should be clean 10 the required standard belore laying in Ihe trench.
A single ladder up 10 an emergency shut-off valve is not acceptable. Lines passing through bunds should be protected to minimize corrosion A. The work 01 preparing International Standards is normally carried out through ISO technical committees.
Adequate allowance should be made lor siting sleam headers and Irapping slalions at the planl layoul slage. Piping not protected by a pressure.
This may often be achieved by substituting the set 156449, installation and operation. The informalion in Ihis annex A supports Ihe requiremenls 01 4. Where an alternative is offered, the vendor should idenlify any variations from this Internalional Slandard and provide delails.
ISO 石油及天然气工业-管路 – MBA智库文档
Draining and venting 4. Additiona1 earth cover e.
Such c1osures, nozzles or chambers should be designed in accordance with the rules set out in this International Standard. The Inlormation in this annex supports Ihe requiremenls 01 4.
BS ISO 15649:2001
Valves should be approachable Irom two sides with easy. Flare and reliel line baltery limil valves should be installed with Iheir stems horizontal.
Pipe marklng and recording 8. Typical slopes lor sloped lines are as lollows: Allowance lor insulation boxes should be made. Where lines need to be drained completely, the piping should be sloped and be provided with drainage points.
Attention should be given 10 pipe movement caused by Ihermal changes, A.
Wire ropes and chains should not be used for lifting. Such joints should incorporate lire. Care should be taken to select a method which will bond 1569 with the coating 01 the main pipe body and is appropriate for the installation conditions.
Isoo of installatlon 8. For undated relerences, Ihe latest edition 01 the normative documenl relerred to appJies. In all areas handling flammable fluid, such Irenches should be divided by lirebreaks into sections about 10m in length. Methods 01 protection may include: Pipes in sleeves should be sealed to the sleeve where A.
Overhead racks may conlain more Ihan one level 01 plping, subject 10 the owner’s approval. Underground lines should be provided with a means lor emptying.