TECHNICAL MANUAL - Sharq.biz

training courseswelders classificationThe standard UNI 9737 identifies the method for the classification andqualification of the personnel involved in the polyethylene pipes/fittings jointingsfor the distribution of fuel gas, water and other fluids under pressure by usingbuttfusion procedures with mechanical equipment and electrofusion system.Leaving out the welding process by socket fusion jointing (pocket jointing) andsegment jointing, rarely used in the defined application field, the 2007 edition ofthe standard distinguishes four different qualification classes according to thefitting type and the welding process.class PE-2 jointing process with buttfusion welding of pipes and/or fittingswith outside diameter less or equal to 315 mmclass PE-2-D jointing process with buttfusion welding of pipes and/or fittingsof every diameterclass PE-3 jointing process with electrofusion welding of pipes and/orfittings with outside diameter less or equal to 225 mm using efsockets and ef saddles of every diameterclass PE-3-D jointing process with electrofusion welding of pipes and/orfittings using ef sockets and ef saddles of every diameter.technical training center EurostandardFor each qualification class, in order to obtain the relative qualification Certificate,the welder must pass a theoretical and practical examination. Only the Operatorswho attended a suitable training course in a qualified Center are allowed for theexamination. This Center must be also approved by an accredited companyfor the personnel certification on the basis of the requirements defined by thestandard UNI 9737. The teachers, having experience in the field and with thewelder certificate, must have pass a qualifying examination carried out by aTechnical Committee encharged by the accredited body.Each course must comprise both theoretical as well as practical session.Duration is related to the welding processes required by the type of qualification.tYpE OF QUALIFICATIONPE-2PE-2-DPE-3PE-3-DPE-2+PE-3PE-2-D+PE-3PE-2+PE-3-DPE-2-D+PE-3-DUpgrade D to classes PE-2 and PE-3TOTAL DURATION16 hours18 hours16 hours18 hours28 hours30 hours30 hours32 hours2 hours10