Study of piping lay out around the Yard Piping

General matters related to piping arrangement are described in the following:

1. Piping Plan

a. Routing

Basically, yard piping is desirable to be assembled in one area on sleepers, for economic efficiency, safety, ease of construction, operability, and maintenance and inspection, and to be planned in the shortest possible route by also preventing pies from crossing each other. Following are the general notes with respect to the routing

-Yard piping shall have its routing laid out along the oil dikes or roads as much as possible
-An overall routing plan shall be made in consideration of spacing for electrical instrumentation ducts, trenches and fire fighting piping, etc.
-Piping other than those connected to tanks shall not have its routing pass through the area surrounded by oil dikes
-Routing shall be planned by keeping the road crossing areas as least as possible
-Pump suction lines shall be routed to minimize pressure drop caused by piping configuration
-Lines having process requirements (requirements for the gravity flow and slope of lines such as for flare, blow-down, and condensate) shall be planned at a higher priority
-A minimum distance of 0.5 m shall be secured from the dike or the fence to the  support or the piping

b. Support Planning

-Types of support: Sleeper type, Rack type
-It shall be determined by considering the following items: Width, Spacing, Elevation and Locations of supports for guide and stopper

2. Detailed Arrangement

a.Type of Yard Piping: Process Piping, Drain Oil, Off-Gas Piping, Utility Piping and Others
b.Arrangement:

-Piping arrangement shall be planned by grouping process and utilitiy respectively
-Small diameter piping shall be arranged in one area to allow easier support
-Electrical and instrumentation ducts shall be arranged at the end of supports to allow easier check and maintenance
-When horizontal loop is required in gravity flow piping such as flare, condensate lines, etc., such piping shall be arranged at the end of supports

c. Others:

The following shall be considered in Detailed Arrangement

-Road Crossing, Drain Piping, Piping at Sloped Site, Measures to Thermal Expansion, Walkway Plan and Piping Support

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Tagged as: Arrangement, Consideration, maintenance, Piping, yard