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TranSystems Corporation - LGM Construction

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501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11<br />

PART 2 - PRODUCTS<br />

2.1 PIPE<br />

2.2 VALVES<br />

A. Materials for the natural gas piping shall be as follows. Products shall be as specified in Section<br />

15050, BASIC MATERIALS AND METHODS.<br />

Pipe Use<br />

Pipe Specification No.<br />

Natural gas - above ground (interior) No. 8 with welded joints<br />

Natural gas - above ground (exterior) No. 8 with welded joints<br />

Natural gas - pipe sleeve No. 8<br />

Natural gas - pressure regulator vent No. 8<br />

A. Valves for use in the natural gas piping system shall be provided as shown on the Drawings and<br />

shall be of the following types unless specifically noted otherwise:<br />

Shutoff<br />

PL-1<br />

PL-2<br />

2.3 INSULATION<br />

A. The gas piping shall not be insulated.<br />

2.4 GAS PRESSURE REDUCING REGULATOR<br />

A. Regulators shall be spring loaded, general purpose, and self-operating. Provide internal relief type<br />

diaphragm assembly and vent valve. Valve body, orifice size and pressure rating shall be suitable<br />

for the connected equipment.<br />

B. Gas regulators shall be Fisher Type S202, or equal.<br />

PART 3 - EXECUTION<br />

3.1 INSTALLATION<br />

A. Extend gas piping to all equipment requiring gas. Pipe, fittings, equipment, and connections shall<br />

be provided with suitable branch take-offs, dirt legs, drips, cocks, and supports.<br />

B. Work shall be installed and tested in accordance with the recommendations of the NFPA, AGA,<br />

manufacturer's recommendations, and local gas utility company.<br />

C. All welding of gas piping shall be by certified welders as required.<br />

D. Furnish and install gas regulator(s) as shown on the Drawings and where required for installation<br />

of gas fired equipment to reduce line pressure to unit operating pressure.<br />

NATURAL GAS SYSTEM 15407-2

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