[Position in which specimens are welded. One assembly in horizontal fixed position. One assembly in vertical fixed position.] 1. When slip-on sleeves and plain type backing rings are used in production, plain type backing rings shall be used in this test. When all three types are used in production, flare-type backing rings shall be used in this test. 2. Parts shall be galvanized where required. 3. Weld shall be deposited in a minimum of two layers. 4. Saw cut after pressure test for visual inspection. 5. No icicles or reduction of area of piping shall be permitted. 6. Omit end plates "A" and "B" when etch test is used in lieu of hydrostatic test. 7. Remove macro specimens from 45°, 135°, 225° and 315° points of the welded butt joints as indicated. (For etch test only.) 8. Mark top and front of piping to insure proper location of specimens when etch test is used in lieu of hydrostatic test. 9. Welding shall be done from one side only. 10. For arc welding use the maximum size of electrode to be used in production. For gas welding use 1⁄2 inch diameter welding rod. FIGURE 56.01-10 (d3)-Welder's qualification Test No. 3. joint, the plate shall be stress-relieved by maintaining it at 1150° F. (±50° F.) for one hour per inch of thickness followed by slow cooling in the furnace to a temperature below 500° F. Stress relieving, as outlined for Test No. 2 above, may be done on Test No. 4, provided such procedure is being used in production work. (1) Test Nos. 1, 2, 3, 4, and 6 are applicable for either arc welders or gas welders. Test No. 5 is for arc welders only. For arc welding, the passing of these tests with direct-current equipment shall qualify the welder for using direct-current equipment only and the passing of these tests with alternating-current equipment shall qualify the welder for using alternating-current equipment only. Passing of these tests with direct-current equipment using either straight polarity or reverse polarity shall qualify the welder for both polarities. (m) Results of qualification tests shall be maintained in typewritten form or by ink on a record card, the face and back of which are shown in figure 56.01-10 (m). A copy shall be furnished to the person or company qualifying the welder and shall be available for examination by the inspector. (Position in which specimens are welded. One assembly in horizontal fixed position. One assembly in vertical fixed position.] 1. Each pass of the weld shall be made with the same size of welding rod or electrode that will be used in production. 2. Machine reinforcement and backing strap flush. Do not remove any undercutting. 3. Machining shall be done transverse to weld. 4. All specimens shall be machined or sawed from piping. 5. Round edges of bend specimens to a T 6 radius of maximum. 6. Mark top and front of piping to insure proper location of specimens. 7. Remove face-bend specimens from 45° and 225 points and root-bend specimens from 135° and 315° points as indicated. 8. Welding shall be done from one side only. 9. If piping of greater wall thickness than 0.380 inch is used in this test, piping may be machined to 0.350 inch to 0.380 inch before welding, or the bending jig may be made in accordance with the actual thickness T of piping used. FIGURE 56.01-10 (d4)-Welder's qualification Test No. 4. 1. 1⁄2 inch diameter electrode shall be used. 2. Backing strap shall be contiguous with plates. 3. All welds in the vertical position shall be welded upwards. I I MIN. 4. Specimens shall be bent in one piece with backing strap in place and face of weld in tension. 5. Weld fractures shall exhibit no unfused areas on backing strap or sides of groove throughout length of each tack. FIGURE 56.01-10 (d5)-Welder's qualification Test No. 5. |