The course is designed to provide thorough theoretical and Practical Training, as may be required by the principles of NAS-410 and EN4179 for Level II technicians required to undertake the Acid Etch Inspection of Steels.

Theoretical training is complemented by practical sessions appropriate to the Acid Etch Inspection methods in use in the particular company concerned.

Standards, Procedures and Specifications such as BS.M37, WHPS044 (Westland Helicopters), NDT6 (Dowty Aerospace), ABP 1-1023 (BAE Systems and Airbus UK are introduced on this course. All tuition is provided by fully qualified instructors.

The course includes, but is not limited to, the following:

• Summary of other NDT methods
• Atomic structure, bonding, and crystal structure
• Properties of alloys
• Equilibrium diagrams
• Hardening of steels, annealing, and tempering
• Metallurgical surface conditions
• The etched structure
• Etching methods
• Preparation of etching solutions and process control
• Etch inspection and interpretation

Students are assessed for comprehension and progress during the course, via a structured series of both theoretical and practical phase assessments, which facilitate counselling and assistance where required. On request a formal end of course examination can be conducted.

Lunch, refreshments and a full set of course notes will be provided during the course.