T.O. 33B-1-1Material tests apply to both newly received and in use materials. They are designed to assure thatunsatisfactory materials do not enter the magnetic particle inspection system and that in use materialscontinue to perform satisfactorily.1.6.5.2TestsForNewMaterials.New materials SHALL be subjected to the following tests, as appropriate, prior to being put into use:a.Perform contamination/background f luorescence check on petroleum based bulk vehicle.b.Check the concentration, background f luorescence and contamination of the bath using the settlingtest.c.Perform system effectiveness test. This applies to magnetic rubber inspection materials as well asconventional magnetic particle inspection materials.1.6.5.3TestsForInUseMaterials.In-use materials SHALL be checked. The frequency of checking SHALL be as established per Table 1-3.1.6.5.4DispositionforNonconformance.NOTEKnowledge of problems, even relatively minor ones, is essential for improve-ment in the NDI program. Information copies of written correspondenceconcerning unsatisfactory magnetic particle inspection materials SHALL befurnished to Air Force NDI Program Office, AFRL/MLS-OL, 4750 Staff Dr.,Tinker AFB, OK 73145-3317; DSN 339-4931 and AFRL/MLSA, 2179 TwelfthStreet, Ste. 1, Wright-Patterson Air Force Base, OH 45433-7718. (For Army:Commander, AVSCOM, Attn.: AMSAV-MC, 4300 Goodfellow Blvd., St. Louis,MO 63120-1798).Reject all materials not meeting minimum requirements. Rejected materials SHALL be reported according toT.O. 00-35D-54. (For Navy: Refer to OPNAV 4790.2 Quality Deficiency Reporting QDR requirements.)1.6.5.4.1Open tank baths SHALL be changed (replaced or replenished, as appropriate) when they do not meetminimum inspection requirements.1.6.6SafetyRequirements.Safety requirements SHALL be reviewed by the laboratory supervisor on a continuing basis to insurecompliance with provisions contained in AFOSH Standard 91-110, section 3.2, as well as provisions of thistechnical order and applicable weapons systems technical orders.1.6.7MagneticParticleEquipment/SystemRequirements.1.6.7.1General.Magnetic particle equipment SHALL be maintained according to applicable technical orders, Navy Mainte-nance Requirements Cards (MRCs) or commercial manuals.1.6.7.2Equipment/SystemTests.The following minimum equipment/system tests, as appropriate, SHALL be accomplished to insure magneticparticle inspection equipment/systems meet acceptable operating standards.a.System effectiveness check.b.Amperage indicator check for stationary units. Perform when the system effectiveness check is failedand as established per Table 1-3 on page 1-16.Change 31-45
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