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Section 15060 <br /> PIPING SYSTEMS <br /> Piping systems shall be thoroughly cleaned prior to testing, flushing and connection to <br /> operating, control, regulating or instrumentation equipment. <br /> B. Liquid Systems <br /> Pipe system cleaning shall take place as the system is constructed and shall be a multiple <br /> step process. <br /> First, each piece of pipe, fitting, valve, or appurtenance shall be visibly checked for the <br /> presence of dirt, debris and contaminants before it is attached to the piping system. If dirt, <br /> debris or contaminants are present, they shall be removed prior to incorporation of the piece <br /> of pipe, fitting, valve, or appurtenance into the system. <br /> Second, the piping system shall be swabbed. Swabbing shall consist of pulling a tight fitting <br /> cleaning ball or swab through the pipe as the pipe system is assembled.The Contractor shall <br /> take care to prevent dirt, debris, or contaminants from entering clean portions of the pipe <br /> system. If such materials enter the pipe system, the pipe system shall be re-swabbed at the <br /> Contractor's expense. <br /> Additional procedures for cleaning potable water piping are specified in Part 3.07 of this <br /> section. <br /> C. Air Systems <br /> Pipe system cleaning shall take place as the system is constructed and shall be a multiple <br /> step process. <br /> First each piece of pipe, fitting, valve, or appurtenance shall be visibly checked for the <br /> presence of dirt, debris and contaminants before it is attached to the piping system. If dirt, <br /> debris or contaminants are present, they shall be removed prior to incorporation of the piece <br /> of pipe, fitting, valve, or appurtenance into the system. <br /> Second, air system piping 6 inches in diameter and smaller shall be blown out, using air. <br /> Piping larger than 6 inches shall be cleaned by having a swab or "pig" drawn through the <br /> separate reaches of pipe. After connection to the equipment, air piping shall then be blown <br /> out using the equipment. Upon completion of cleaning, the piping shall be drained and dried <br /> with an airstream. <br /> 3.05 TESTING <br /> A. General <br /> All piping systems shall be tested following installation and cleaning. Testing shall occur <br /> prior to the application of insulation to exposed piping, prior to flushing, and prior to <br /> Walnut Grove Sewer Project (Conformed) 15060-7 SAO 160401 <br /> March 2008 n:Asa0160401\specs\w� conformvdiv I5v15060.doc <br />