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Annexes A layout 01 piping.
The work 01 preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject lor which a technical committee has been established has the right to be represented on that committee.
Where an alternative is offered, the vendor should idenlify any variations from this Internalional Slandard and provide delails. For undated relerences, Ihe latest edition 01 the normative documenl relerred to appJies.
This may often be achieved by substituting the set This may not be easy to demonstrate il substitute standards are selected from a variety 01 origins.
ISO – Petroleum and natural gas industries — Piping
Piping not protected by a pressure. The owner shall establish Ihe requirements lor design, con. The piping manufacturer shall! Due care should be exercised in selecting materials in order to prevent brittle-type Iracture where necessary; where lor specific reasons brittle material has to be used.
Draining and venting 4. Dynamic amplification may be ignored. Consideration should be given as to isso glass-reinlorced-plastics piping in accordance with should be specilied. The informalion in Ihis annex A supports Ihe requiremenls 01 4. Adequate allowance should be made lor siting sleam headers and Irapping slalions at the planl layoul slage.
Pipe lracks should nol encircle equipment.
Valves should be approachable Irom two sides with easy. A single ladder up 10 an emergency shut-off valve is not acceptable. Flare and reliel line baltery limil valves should be installed with Iheir stems horizontal. Valves in ground-Ievel pipe tracks should be suitably grouped. Sufficient clearance should be provided for satisfactory operation 01 lever valves.
BS ISO – Petroleum and natural gas industries. Piping
Allowance lor insulation boxes should be made. Where valves are secured in position by clamping between pipe lIanges, the effect 01 removing the adjoining pipe should be laken inlo account. Methods 01 protection may include: Underground lines should be provided with a means lor emptying. Where lines need to be drained completely, the piping should be sloped and be provided with drainage points. Examples 01 lines requiring complete drainage are: Typical slopes lor sloped lines are as lollows: Pipes entering or 1eaving pipe racks should do so at common intermediate elevations, either above or below the main rack levels A.
PD CEN/TR 14549:2004
Attention should be given 10 pipe movement caused by Ihermal changes, A. Overhead racks may conlain more Ihan one level 1549 plping, subject 10 the owner’s approval. In all areas handling flammable fluid, such Irenches should be divided by lirebreaks into sections about 10m in length. The spaelngd any firebreak wa! Additiona1 earth cover e. Pipes in sleeves should be sealed to the sleeve where A. Tankage areas Additional considerations A.
Such joints should incorporate lire. Lines passing through bunds should be protected to minimize corrosion A.
The Inlormation in this annex supports Ihe requiremenls 01 4. 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 proposed pipe.
Depth of installatlon 8. Pipe marklng and recording 8. AII buried pipe5 should be identilied on as.
BS ISO 15649:2001
Such c1osures, nozzles or chambers should be designed in accordance with the rules set out in this International Standard. InstalJation in trenches 8. Adequale means should be provided lor removing Ihe test waler from the pipe and 1564. The bore of the piping should be clean 10 the required standard belore laying in Ihe trench.
Wire ropes and chains should not be used for lifting.
Protective pipe coatings oso be examined after the pipe is laid and prior to back-filling the excavation. These should also be employed for sections inslalled by thrusl boring or similar means. Care should be taken to select a method which will bond adequately with the coating 01 the main pipe body and is appropriate for the installation conditions.
Fabrication, installation and operation.