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RFCF,7-P,!ED <br />Js1'1� 17 �uI-r <br />ENVIRONMENTAL HEALTH <br />CER'_\RTMENT <br />PART THREE <br />Installation instruction for <br />Dualoy 3000/LCX Coaxial Pipe <br />Dualoy 3000/LCX pipe and fittings are manufactured from <br />fiberglass reinforced, thermosetting, aromatic amine -cured <br />epoxy resins, as are Red Thread IIA and Dualoy 3000/1- pipe. <br />The containment jacket on the pipe is coaxial and in close <br />proximity to the primary pipe, separated by a thin layer of <br />glass beads. The two layers do not move relative to each <br />other so the pipe handles, effectively, like a single piece. The <br />containment over the fittings is made by applying matched <br />two-piece clamshell fittings over the primary fitting connecting <br />the pipe containment jackets. The primary piping and fittings <br />are joined using the same strong reliable bonded joint as in <br />Dualoy 3000/1- single wall piping. <br />Installation of Dualoy 3000/LCX pipe follows the same basic <br />principles as that of Red Thread IIA and Dualoy 3000/L piping, <br />as defined in this booklet. The same primary fittings are used <br />for both Dualoy 3000/1- and 3000/LCX pipe and the same cut- <br />ting and tapering instructions apply. There is an added note <br />that when tapering the primary pipe of 3000/LCX pipe, care <br />needs to be taken not to damage the secondary pipe. <br />Cuffing <br />Use a fine -blade hacksaw, radial cut-off saw or circular saw <br />with abrasive wheel to cut pipe in the field. The cut end must <br />be square to within 3/16 inch (5 mm). Hold pipe securely for <br />all cutting and tapering. When using a pipe vise, always wrap <br />the pipe with a protective material such as a 1/4 inch (6 mm) <br />thick rubber pad. Take care not to damage or over -deflect the <br />pipe when tightening the vise. <br />Removing containment with jacket cutting tool. The jacket cut- <br />ting tool is used to quickly remove the containment layer from <br />the end of the pipe to expose the primary when field cuts are <br />needed. The tool provides a square finished edge to the con- <br />tainment. The tool consists of a pneumatic grinder equipped <br />with a diamond coated cut off wheel. It is adjustable to allow it <br />to be set at the desired depth to cut through the containment <br />without any risk of cutting into the primary pipe. The jacket <br />cutting tool can either be clamped into a vise or can be hand <br />operated if the pipe is clamped into a pipe vise. <br />61 <br />