Type : Lease.

NOMINAL WALL THICKNESS*
ASME B31.8
(GAS TRANSPORTATION)
(STEEL PIPING SYSTEMS DESIGN REQUIREMENTS)

  With this method, you may obtain
  · Required nominal wall thickness for a given design pressure.

  This method covers the pipe design and others connections of gas pipelines for gas transmissions and distributions systems.

 You may also obtain :

• Minimum Hidrostatic Test Pressure
• Maximum Hidrostatic Test Pressure
• Maximum Allowable Working Pressure

    Furthermore you will be able to:

  · Check your existing pipelines for different conditions .
  · Check your Steel Pipe design modifying some one of the parameters as follows:

· Design Pressure (internal).
· Design Temperature.
· Thickness.
· Diameter.
· Material Specification.
· Corrosion Allowance.

NOTE: Temperature up to 450°F

LOCATION CLASSES FOR DESIGN AND CONSTRUCTION

  (1) Location Class 1. A Location Class 1 is any 1 mile section that has 10 or fewer buildings intended for human occupancy.   A Location Class 1 is intended to reflect areas such as wasteland, deserts, mountains, grazing land, farmland, and   sparsely populated areas.
    (a) Class 1 Division 1. A Location Class 1 where the design factor of the pipe is greater than 0.72 but equal to or less   than 0.80, and which has been hydrostatically tested to 1.25 times the maximum operating pressure.
    (b) Class 1 Division 2. A Location Class 1 where the design factor of the pipe is equal to or less than 0.72, and which has   been tested to 1.1 times the maximum operating pressure.

  (2) Location Class 2. A Location Class 2 is any 1 mile section that has more than 10 but fewer than 46 buildings intended   for human occupancy. A Location Class 2 is intended to reflect areas where the degree of population is intermediate   between Location Class 1 and Location Class 3 such as fringe areas around cities and towns, industrial areas, ranch or   country estates, etc.

  (3) Location Class 3. A Location Class 3 is any 1 mile section that has 46 or more buildings intended for human occupancy   except when a Location Class 4 prevails. A Location Class 3 is intended to reflect areas such a suburban housing   developments, shopping centers, residential areas, industrial areas, and other populated areas not meeting Location   Class 4 requirements.

  (4) Location Class 4. A Location Class 4 includes areas where multistory buildings are prevalent, and where traffic is heavy   or dense and where there may be numerous other utilities underground. Multistory means 4 or more floors above ground   including the first or ground floor. The depth of basements or number of basement floors is immaterial.

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EXIT DATA SHEET IS AS FOLLOWS :

INPUT FOR CALCULATION METHOD
NOMINAL WALL THICKNESS*
(STEEL PIPING SYSTEMS DESIGN REQUIREMENTS)