S9074-AR-GIB-010/278
9. DESIGN (REQUIREMENTS FOR WELDING JOINTS) 9.1 General. This section contains the minimum requirements for the design of welded joints for machinery, piping, pressure vessels, and turbines (M. P. A, and T). Piping schedules and fabrication details for specific piping systems of surface ships and submarines are covered in MIL-STD-777 and MIL-STD-438 respectively. Within this document design group classifications consist of butts, tees, corners, and partial penetration type joint designs. 9.2 Joint design. Unless otherwise approved or unless otherwise modified by the application and limitations of MIL-STD-777 or MIL-STD-438, the design of welded joints for classes M, P, A, and T shall be as shown in Table VII. Figure 1 gives examples of acceptable nozzle and flange joint locations for radiography.
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