NDT INSPECTION Flashcards
WHAT ARE 2 SOURCES OF ELECTROMAGNETIC RADIATION THAT ARE USED IN RADIOGRAPHIC INSPECTION?
- GAMMA RADIOGRAPHY
- X-RAY RADIOGRAPHY
WHAT IS THE ESTIMATED ANNUAL DOSE OF RADIATION FOR ATOMIC WORKERS?
50 MSR
WHAT THREE METHODS ARE USED BY NCLEAR ENERGY WORKERS TO KEEP THEIR DOES AS LOW AS REASONABLY ACHIEVABLE?
- TIME
- DISTANCE
- SHIELDING
WHAT ARE THREE SAFETY DEVICES THAT ARE USED BY RADIATION WORKERS TO KEEP THEIR EXPOSURE TO RADIATION AT A MINIMUM?
- GAMMA SURVEY METER
- DIRECT READING DOSIMETER
- RADIATIONS ALARM
WHAT IS REQUIRED TO TRANSMIT THE MECHANICAL ENERGY WAVE FROM THE PROBE TO THE PART BEING INSPECTED?
COUPLANT
IN ALBERTA, WHAT 2 MAJOR INDUSTRIAL USES DOES ULTRASONIC TESTING HAVE?
- CORROSION INSPECTION
- WELDING INSPECTION
WHAT ARE THE 2 MAIN TYPES OF SOUND WAVES UTILIZED IN ULTRASONIC TESTING?
COMPRESSIVE -> LONGITUDINAL
SHEAR -> TRANSVERSELY
WHAT IS THE Y-AXIS AND X-AXIS ON A CRT PLOT?
Y-AXIS -> AMPLITUDE
X-AXIS -> TIME
WHAT 2 DUTIES DOES A PIEZOELECTRIC TRANSDUCER PERFORM IN ULTRASONIC INSPECTION?
- CONVERT ELECTRICAL ENERGY TO MECHANICAL ENERGY
- CONVERT RECIEVED MECHANICAL ENERGY TO ELECTRICAL ENERGY
WHAT ARE THREE TYPICAL USES OF INDUSTRIAL RADIOGRAPHY?
- DETECT CRACKS, VOIDS, OR DEFECTS
- CORROSION MONITORING
- CHECK INTERNALS
MAGNETIC PARTICLE INSPECTION CAN ONLY BE USED ON WHAT TYPE OF MATERIAL?
FERROMAGNETIC MATERIALS
WHAT ARE THE 2 TYPES OF MAGNETIC PARTICLES THAT CAN BE USED FOR MPI?
- DRY POWEDERED
- LIQUID MEDIUM
WHAT TYPE OF MAGENTIC PARTICLES ARE THE MOST SENSITIVE?
LIQUID MEDIUM
WHAT ARE 2 ADVANTAGES OF USING MPI AS A NON-DESTRUCTIVE TEST METHOD?
- VERY PORTABLE INSPECTION METHOD
- LOW COST
WHAT ARE 2 DISADVANTAGES OF USING MPI AS A NON-DESTRUCTIVE TEST METHOD?
- CANT DO INSPECTIONS ON NON-FERROUS MATERIALS
- SOME MATERIALS MAY REQUIRE REMOVAL OF COATING TO ACHIEVE DESIRED INSPECTION SENSITIVITY
WHAT ARE 3 REQUIREMENTS TO USE MPI TESTING?
- FERROMAGNETIC MATERIAL
- A MAGNETIC FIELD MUST BE APPLIED TO THE PART
- MAGNETIC PARTICLES (DRY OR SUSPENDED IN A LIQUID) MUST BE APPLIED TO THE SURFACE DURING OR AFTER MAGNETIZATION.
WHAT IS THE REQUIREMENT OF A MATERIAL IN ORDER TO PERFORM A LIQUID PENETRANT INSPECTION?
NON-POROUS WITH RELATIVELY SMOOTH SURFACE
CAN LIQUID PENETRANT INSPECTION DETECT DISCONTINUITIES SLIGHTLY BELOW THE SURFACE?
NO.
CAN LIQUID PENETRANT INSPECTION BE CONDUCTED ON GLASS AND CERAMIC?
YES.
WHAT ARE THE 6 STEPS FOR CONDUCTING A LIQUID PENETRANT INSPECTION USING A SOLVENT REMOVABLE?
- PRE-CLEAN THE SURFACE
- APPLY PENETRANT ON SURFACE WITH PROPER DWELL TIME
- REMOVE EXCESS PENETRANT WITH CLOTH
- APPLY DEVELOPER
- INSPECTION & EVALUATION OF MATERIAL
- POST-CLEANING OF MATERIAL
WHAT DOES MPI STAND FOR?
MAGNETIC PARTICLE INSPECTION.
WHAT DOES LPI STAND FOR?
LIQUID PENETRANT INSPECTION.
WHAT ARE 2 ADVANTAGES OF LPI?
- RELATIVELY EASY TO USE
- AEROSOL SPRAY CANS CAN BE PORTABLE
WHAT ARE 2 DISADVANTAGES OF LPI?
- REQUIRES A SMOOTH NON-POROUS MATERIAL
- CHEMICAL HANDLING PRECAUTIONS ARE NECESSARY
