title = "Non-Destructive Testing (NDT) Overview"

content = """
Non-Destructive Testing (NDT) encompasses a group of techniques used to examine materials and components for defects, discontinuities, and structural integrity without causing damage to the tested part. At Ridgecrest Metalworks, NDT is applied to weldments, forgings, castings, and heat-treated components where internal or surface-breaking defects could lead to in-service failure.

The five principal NDT methods used in metal manufacturing are:
- Visual Inspection (VT): The most basic and universal method; detects surface-visible defects with the naked eye or with optical aids
- Magnetic Particle Testing (MT): Detects surface and near-surface discontinuities in ferromagnetic materials
- Dye Penetrant Testing (PT): Detects surface-breaking discontinuities in any solid, non-porous material
- Ultrasonic Testing (UT): Detects internal and surface defects using high-frequency sound waves; provides depth information
- Radiographic Testing (RT): Uses X-rays or gamma rays to produce images of internal structure; shows volumetric defects

Eddy Current Testing (ET) is also used, primarily for detecting surface cracks in non-ferrous or coated components and for sorting materials by conductivity or hardness.

NDT at Ridgecrest is conducted by qualified and certified personnel. Personnel certification follows the requirements of ISO 9712 or ASNT SNT-TC-1A. Level 1 technicians perform testing under supervision; Level 2 technicians can perform and interpret tests independently and issue reports; Level 3 engineers provide technical oversight, write procedures, and approve methods.

NDT procedures for each method define: scope and applicability, equipment, surface preparation, technique parameters, acceptance criteria, and report format. Acceptance criteria are derived from the applicable standard for the product type (e.g., ISO 5817 for welds, EN 1369 for sand castings). Defects exceeding the acceptance criteria are dispositioned per the NCR process: scrap, repair/rework, or concession.

NDT records include the examination report with technician identity, certification level, equipment identification, calibration verification, examination date, and result. Records are retained in the quality system for the period specified by the customer or regulatory requirement.
"""

version = "0.0.1"
