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1、Welding InspectionBS EN 22553Course Reference WIS 5TWITWIArrow lineReference linesArrow sideOther sideBS EN 22553. Welding Symbols (ISO 2553)Arrow sideOther sideOther sideArrow sideBoth sidesTWIBS EN 22553. Welding Symbols (ISO 2553)TWIbadcTWIBS EN 22553. Welding Symbols (ISO 2553)TWIFlatConvexConca
2、veBS EN 22553. Welding Symbols (ISO 2553)Toes shall be blendedTWIField weld (site weld)NDTThe component requires NDT inspectionWPSAdditional information, the reference document is included in the boxWelding to be carried out all round component (peripheral weld)BS EN 22553. Welding Symbols (ISO 2553
3、)TWIa = Design throat thicknessz = Leg lengtha = 0.7 of zazBS EN 22553. Welding Symbols (ISO 2553)a 44mm throat b 66mm legTWIn = number of weld elementsl = length of each weld element(e) = distance between each weld elementWelds to be staggeredProcessn x l (e)3 x 10 (20)2 x 10 (20)111BS EN 22553. We
4、lding Symbols (ISO 2553)TWISingle-V Butt flush capSingle-U Butt with sealing runBS EN 22553. Welding Symbols (ISO 2553)Single-V Butt with permanent backing stripM Single-U Butt with removable backing stripM RTWISingle-bevel buttDouble-bevel buttSingle-bevel butt Single-J buttBS EN 22553. Welding Sym
5、bols (ISO 2553)TWIPartial penetration single-V butt1010BS EN 22553. Welding Symbols (ISO 2553)TWIAns to BS EN 22553 Fillet Welds ex: 11. Welded arrow side: A continuous fillet weld with a 6 mm leg length , toes to be blended smoothly.2. Welded both sides: Three intermittent fillet welds with 6 mm le
6、g lengths, the length of each weld 25 mm and the distance between each weld 40 mm. 3. Welded arrow sides: Three intermittent fillet welds with 10 mm leg lengths, the length of each weld 40 mm, the distance between each weld 30mm.Welded other side: Three intermittent fillet welds 6 mm leg lengths, th
7、e length of each weld 50mm and the distance between each weld 25mm, welds to be staggered.4. Welded arrow side: Three intermittent fillet welds with 8 mm leg lengths, the length of each weld 25 mm and the distance between each weld 50 mm.Welded other side: Two intermittent fillet welds with 10 mm le
8、g lengths, the length of each weld 20 mm and the distance between each weld 40mm, welds to be staggered.3 x 25 (50)2 x 20 (40)108505025254040202025640504050502525303040301063 x 403 x 50(25)(30)3 x 25 (40)3 x 25 (40)6625402540252525254040TWI Ans to BS EN 22553 Butt Welds ex: 11. Welded arrow side: Si
9、ngle V butt weld with permanent backing strip, flat weld profile. M2. Welded other side: Single “U” butt weld, flat weld profile3. Welded arrow side: Single “V” butt weld depth of preparation 10 mm Welded other side: Backing run. (Plate thickness 15 mm.)4. Welded arrow side: Single “J” butt weld, depth of preparation 12 mm with a 8 mm fillet weld superimposed. (plate thickness 15 mm. Welded other side: 12 mm leg length fillet weld.1012128
