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D . Lining Inspection : <br /> 1 . All ductile iron pipe and fitting linings shall be checked for <br /> thickness using a magnetic film thickness gauge . The <br /> thickness testing shall be done using the method outlined <br /> SSPC-PA-2 film thickness rating . <br /> 2 . The interior lining of all pipe and fittings shall be tested for <br /> pinholes with a nondestructive 2 , 500-volt test. <br /> 3 . Each pipe joint and fitting shall be marked with the date of <br /> application of the lining system and with its numerical <br /> sequence of application on that date . <br /> E . Certification of Lining Inspection : The pipe or fitting manufacturer <br /> must supply a certificate attesting to the fact that the applicator <br /> met the requirements of this specification , and that the material <br /> used was as specified , and that the material was applied as <br /> required by the specification . <br /> F . Repair: Anywhere that the coating is removed purposely or <br /> accidentally, the area shall be cleaned of any rust, grease , and dirt <br /> and re-coated to a minimum dry film as specified for the individual <br /> piece . <br /> G . Encasement: If and when directed by the Engineer of Record and <br /> IRCDUS , a polyethylene encasement shall be provided around <br /> pipe , fittings , and valves . The material , installation , and <br /> workmanship shall conform to applicable sections of AWWA <br /> Standard Specifications C105/A21 . 5-99 , or latest revision . <br /> Installation methods A or B shall be employed using flat tube <br /> polyethylene . The Contractor shall make provisions to keep the <br /> polyethylene from direct exposure to sunlight prior to installation . <br /> Backfilling following installation shall be completed without delay <br /> to avoid exposure to sunlight. <br /> H . All exposed sewer ductile iron pipe shall be coated (painted ) <br /> green per approved manufacturer's Product List. <br /> 4. 06 BELL AND SPIGOT CONNECTIONS <br /> Joints in bell and spigot pipe shall be push -on , mechanical , or restrained <br /> joints in accordance with AWWA Standard Specifications C111 /A21 . 11 - <br /> 00 , or latest revision . Pipe restraints shall also be in accordance with <br /> IRCDUS Standards or as directed by Engineer or IRCDUS . <br /> 4. 07 FLANGED CONNECTIONS <br /> A. All flanged pipe barrels shall comply with the physical and <br /> chemical characteristics ( requirements ) as set forth in the <br /> Handbook of Ductile Iron Pipe Research Association , latest <br /> 4 - 3 <br />