Magnetic Particle Testing
Magnetic Particle Testing (also called MT or Mag Testing) is a safety inspection method used to find tiny cracks or flaws in metal parts that can't be seen by the naked eye. It's like using a special magnet and iron powder to reveal hidden problems in metal equipment, similar to how an X-ray shows things inside the body. This method is commonly used in industries like manufacturing, aerospace, and oil & gas to make sure metal parts are safe to use. It's one of several methods for checking equipment safety, others being ultrasonic testing or dye penetrant testing.
Examples in Resumes
Performed Magnetic Particle Testing on critical machinery components in manufacturing plant
Certified Level II MT inspector for aerospace components
Led team of 5 technicians in conducting Mag Testing inspections on pipeline welds
Typical job title: "NDT Technicians"
Also try searching for:
Where to Find NDT Technicians
Professional Organizations
Job Boards
Professional Networks
Example Interview Questions
Senior Level Questions
Q: How would you train junior technicians in magnetic particle testing procedures?
Expected Answer: A senior inspector should discuss creating clear procedures, hands-on demonstration techniques, safety protocols, and methods for verifying trainee competency. They should mention documentation requirements and certification processes.
Q: What steps would you take if you found a serious defect during inspection?
Expected Answer: Should explain the proper documentation process, notification chain, understanding of when to stop production, and ability to make recommendations for corrective actions.
Mid Level Questions
Q: What are the different magnetization techniques and when would you use each?
Expected Answer: Should be able to explain circular and longitudinal magnetization in simple terms, and describe common workplace situations where each would be appropriate.
Q: How do you ensure proper demagnetization after testing?
Expected Answer: Should explain the importance of demagnetization, basic methods used, and how to verify the process was successful.
Junior Level Questions
Q: What safety equipment is required for magnetic particle testing?
Expected Answer: Should list basic personal protective equipment like safety glasses, gloves, and proper clothing, and explain basic safety procedures when working with testing equipment.
Q: Can you explain the basic steps of performing a magnetic particle inspection?
Expected Answer: Should be able to describe the basic process: cleaning the surface, applying the magnetic field, applying the testing particles, and examining for indications.
Experience Level Indicators
Junior (0-2 years)
- Basic testing procedures
- Equipment operation
- Safety protocols
- Basic report writing
Mid (2-5 years)
- Advanced inspection techniques
- Result interpretation
- Equipment maintenance
- Quality control procedures
Senior (5+ years)
- Team supervision
- Procedure development
- Training and mentoring
- Complex problem solving
Red Flags to Watch For
- No certification or expired certification
- Unable to explain basic safety procedures
- Lack of hands-on testing experience
- Poor documentation practices
- No knowledge of industry standards and codes
Related Terms
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