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5703.6.2 Design, Fabrication and Installation of Piping Systems and Components
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Piping system components shall be designed and fabricated in accordance with the applicable standard listed in Table 5703.6.2 and Chapter 27 of NFPA 30, except as modified by Section 5703.6.2.1.
TABLE 5703.6.2
PIPING STANDARDS
PIPING USE | STANDARD |
Power Piping | ASME B31.1 |
Process Piping | ASME B31.3 |
Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids | ASME B31.4 |
Building Services Piping | ASME B31.9 |
Low-melting-point materials (such as aluminum, copper or brass), materials that soften on fire exposure (such as nonmetallic materials) and nonductile material (such as cast iron) shall be acceptable for use underground in accordance with the applicable standard listed in Table 5703.6.2. When such materials are used outdoors in above-ground piping systems or within buildings, they shall be in accordance with the applicable standard listed in Table 5703.6.2 and one of the following:
- Suitably protected against fire exposure.
- Located where leakage from failure would not unduly expose people or structures.
- Located where leakage can be readily controlled by operation of accessible remotely located valves.
In all cases, nonmetallic piping shall be used in accordance with Section 27.4.6 of NFPA 30.
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