S9074-AR-GIB-010/278
3.) Inspection shall be performed after cutting or grinding teeth, as applicable, but before shot peening for through-hardened elements.
4.) Piping which is furnished in sections by the gear manufacturer for installation welding at the shipyard will not require hydrostatic testing by the gear manufacturer where the final assembly is pressure tested by the shipbuilder.
5.) Test pressure shall be a gauge pressure of 150 lb/in2..
6.) A strength weld transmits propulsion torque or propulsion thrust.
7.) Test shall consist of filling sump with water or clean hot oil and visually examining for leakage. Leaks shall be cause for rejection pending corrective repairs and retest to assure a sound leak-free sump. X - Indicates test required. X - Followed by number indicates acceptance level. X - Followed by VA indicates vendor levels as approved by NAVSEA LT - Leak test (gravity)
15.3 Performing NDT inspection.
15.3.1 NDT inspection shall be performed in accordance with MIL-STD-271
15.4 Acceptance standards for NDT inspection.
15.4.1 MT and PT inspection of welds. Inspection for surface discontinuities in welds and adjacent areas shall be performed by MT or PT method. In general, the MT method shall be used on ferrous materials and the PT method on nonferrous materials and austenitic corrosion resistant steels. Acceptance criteria for welds shall be in accordance with MIL-STD-2035.
15.4.2 . There shall be 100 percent MT or PT inspection of all accessible areas for the items shown in table XXII. Acceptance standards shall be in accordance with MIL-STD-2035.
15.5 UT inspection.
15.5.1 UT inspection in accordance with an approved written test procedure and acceptance standards may be used when approved for the application.
15.6 Additional inspection for ferritic materials.
15.6.1 Ferritic castings and fabrication welds thereto which are radiographed prior to stress relief, as permitted by MIL-STD-27l, shall be subjected to MT inspection after stress relief. Acceptance standards shall be as required for the parts or welds involved.
Original 131
Made with FlippingBook - Share PDF online