#Brass timekeeper b2 1207 manual#
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Welder qualification testing shall be performed by an approved agency listed with the department, and the inspector witnessing the test shall be an authorized AWS Certified Welding Inspector.Requalification is required every five years or sooner if the commissioner has a specific reason to doubt a welder's ability to make acceptable welds. Welders shall be qualified for all required pipe sizes, wall thicknesses and positions in accordance with the ASME Boiler and Pressure Vessel Code, Section IX.Installations, including any welding, shall be subject to special inspection.Bellows expansion joints shall not be utilized on high pressure steam piping.SSO shall be designed in accordance with the Steam Distribution Utility System requirements of the utility company having jurisdiction and ASME B31.1.

#Brass timekeeper b2 1207 manual#

Manual reset shall be required to reopen the SSO.

#Brass timekeeper b2 1207 full#

SSO shall be designed to automatically close at or below the design pressure of the downstream piping system that is being protected, to provide positive shutoff against full upstream pressure.Safety Shutoff Valves (SSO) to protect downstream piping from overpressure shall be allowed in lieu of a safety relief valve vented to the outdoors as required by Section 1006.6.

Steam distribution systems utilizing pressure reducing valves.

For steam pressures between 90 psig (620.5 kPa) and 16 psig (110.3 kPa), the system shall be designed for 125 psig (861.8 kPa).

Systems using utility street steam shall be designed for a pressure of 200 psig (1379 kPa) and 413☏ (211.7☌) up to and including the steam pressure reducing valve or valves which reduce the pressure of 90 psig (620.5 kPa) or below.

The design, size, material and location of all anchors, guides and auxiliary steel, and the stresses thereon.

The location, type, specifications and details of all expansion joints.

The operating pressures and temperatures.

The plans and application shall contain, but not be limited to, the following information: An application and plans shall be filed and the approval of the department obtained.

The system shall be designed by an engineer.

Polyethylene/aluminum/polyethylene (PE-AL-PE) pressure pipe

TABLE 1202.4 HYDRONIC PIPE MATERIALĪcrylonitrile butadiene styrene (ABS) plastic pipeĬhlorinated polyvinyl chloride (CPVC) plastic pipeĬopper, brass, or copper-alloy tube (Type K, L or M)ĪSTM B 75 ASTM B 88 ASTM B 135 ASTM B 251Ĭross-linked polyethylene/aluminum/cross-linked polyethylene (PEX-AL-PEX) pressure pipe The exterior of the pipe shall be protected from corrosion and degradation. Hydronic pipe shall conform to the standards listed in Table 1202.4.