MIL-HDBK-6870B
e. Inspector training and qualification requirements.
f. Manufacturer and model number of all equipment to be used, indicating optional equivalents, if desired.
g. Fixturing requirements, as applicable.
h. Manufacturer and identification of required inspection materials. i. Reference to inspection standard practices as applicable.
j. Calibration/standardization procedure, including initial equipment settings, and reference standard identification, including drawings, as applicable.
k. Inspection access including overall system figures leading to detailed access figures. l. Inspection frequency (at what flight hours to initiate - and frequency thereafter).
m. Identification of expected damage type (fatigue crack, SCC, impact damage, corrosion, etc), location and orientation.
n. Identification of required scan direction and coverage. o. Evaluation criteria.
p. Acceptance criteria (including repair criteria where applicable). q. Component disposition.
r. Cautions and warnings in use of the inspection procedure.
s. Part marking (to designate/document if part has passed or failed inspection).
t. Post-test requirements (including cleaning, preservation, demagnetization, etc.).
7.3.2 Sustainment NDI procedure format.
NDI procedures will be written in accordance with MIL-DTL-87929 to the appropriate inspector training level or as stipulated by the contract.
7.4 Inspection capability demonstration.
The capability of nondestructive inspection processes to be used for long term sustainment should be established. Special emphasis should be given to fracture or fatigue and mission- critical parts. Capability demonstrations should also be performed when new materials, fabrications techniques, specialty coatings and repairs processes are implemented that may affect the efficacy of the selected inspection processes. The methodology for establishing capability should be addressed within the NDI Program Plan. Capability assumptions used to establish reoccurring inspection intervals should be approved by the NDIRRB and documented in accordance with the MIL-STD-1530, MIL-STD-3024 or MIL-STD-1789. Use of pre- established capability assumptions for established inspection methodologies (i.e., Structures Bulletin EN-SB-008-012) should be approved by the NDIRRB.
7.5 NDI procedure validation and verification.
The NDI Program Plan should address the process for validation and verification of all inspection procedures. All procedures and procedure families should be verified to assure repeatable damage detection capability sufficient for the classification of the part. Procedures may be verified on parts or on test pieces simulating the actual part and which provide the essential features of the part with regard to the important application variables which may affect defect detection sensitivity, signal-to-noise and confidence level. Use of substitute test pieces
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