Eddy Current Level II Training

This certification course exclusively recommended for practicing NDT Technicians and Engineers who wish to upgrade knowledge Ultrasonic Testing (UT) of critical T-K-Y weld joints in Steel structures and piping.

This course is disigned for learning of special techniques suitable for directly applying to actual T-K-Y weld joints on field. NDT Trainers with realtime field experience in inspection of specialized weld inspection applications will teach the subject. The program consists of in depth study about interpretation of applicable codes related to these types of joints, practical sessions and technical discussions to quickly bring the students for easy understanding the subject.

RFET (or RFT as it is commonly known) has been used to inspect diameters up to 72 inches and wall thicknesses up to 1.5 inch (not at the same time). The limitation on diameter and wall thickness is really imposed by the design of the instrument and probe carrier, not by the physics of RFT itself. For heavy wall such as cast iron pipe, frequencies around 20 Hz would be needed. And since this frequency is in the domain of probe vibration, a smooth ride is essential and the probe must be pulled very slowly. Larger diameter pipes will need multiple receiver coils for sensitivity to local defects.

For fin fan, use "near field" probes. The fins do not allow the field from the remote field probes to travel on the outside of the tube, so the signal is lost.

For heat exchanger tubes, clean the tubes to remove debris that may impede the passage of the probe or cause probe vibration, especially if the debris is magnetic.

Advantages

1. Can inspect ferromagnetic tubes up to 3.5 inches in diameter with 0.125 inches wall thickness.
2. Inspection speed (up to approx. 40 feet per minute).
3. Can detect large-area discontinuities such as steam erosion and baffle wear.
4. Amplitude changes in the signals sensed are not speed-sensitive.
5. Flexible probes can be used to inspect and travel through U-bend areas.
6. Permanent records can be obtained on test results.

Limitations

1. Some limitation to distinguishing ID from OD defects.
2. Evaluation of small flaws such as pits can be difficult.
3. Impingement erosion and wall loss detectability is limited to approximately 20% and greater.
4. Requires high inspection skills for data analysis and evaluation.
5. Instrumentation and test probes can be very expensive.
6. Tubes must be cleaned.
7. Inaccuracy in test results could occur if a discontinuity encountered differs in geometry from calibration discontinuities.

The Phased Array Ultrasonic Testing (PAUT) level 1+2 course is for everyone holding a UT-2 certificate, which need a thorough knowledge of the PAUT theory, practical data collection, data evaluation and reporting as well as the method’s applications.

Phased Array Ultrasonic Testing (PAUT) is an advanced non-destructive examination technique that uses ultrasonic probes capable of pulsing elements individually at different time intervals. Compared with conventional ultrasonics, PAUT provides higher probability of detection, it is faster, more reliable, and it provides 2D or 3D images and a permanent record of the inspection through the data recorded.

This course is designed for any experienced Level 2 qualified ultrasonic technicians looking to expand their knowledge and gain a qualification in phased array ultrasonic testing (PAUT).

This course will teach you the principles of phased array inspection, principles of phased array probes, principles of inspection sensitivity, and phased array instrument. You will also learn about scanning with phased array probes, calibration and checks, software for data collection and data analysis, and principles of data analysis. The course will also teach you about software familiarity, use of software tools for defect detection and sizing, data analysis, procedures for verification of flaw existence and position, and reporting.
 

The NDE Level III program provides third-party certification for nondestructive testing (NDT) personnel whose specific jobs require knowledge of the technical principles underlying the nondestructive tests they perform, witness, monitor or evaluate. The program provides a system for NDE Level III certification in NDT in accordance with Recommended Practice No. SNT-TC-1A. 

Certification under this program results in the issuance of an NDE certificate and wallet card attesting to the fact that the certificate holder has met the published guidelines for the Basic and Method examinations as detailed in Recommended Practice No. SNT-TC-1A.

The NDE Level III program is the core certification program for NDT. Inaugurated in early 1977, NDE Level III certificates are recognized worldwide.

The NDE Level II certification program was developed to provide standardized Level II written examinations that employers may use to satisfy the general and specific examination guidelines.

The general examination for each test method is applicable to all industry sectors. Personnel holding a currently valid NDE Level II certificate are not required to retake the general examination in that test method when adding industry sectors.

The specific written examination is a two-hour, 40-question, multiple-choice examination based on an NDT procedure covering the equipment, operating processes and NDT techniques that a Level II might encounter while performing NDT tasks in the applicable industry sector. These NDT procedures were developed by NDT Level III's who work in the applicable industry sector and are based on codes, standards and specifications commonly used in that sector.

Candidates applying for initial certification must take both the general examination and at least one specific examination in each test method for which certification is sought. Candidates may take the General Industry or the Pressure Equipment Specific examination, or if they seek certification in both industry sectors, they may take both sector-specific examinations. Personnel retaking failed examinations or adding an industry sector may take only those examinations required to complete that certification. Passing the general and at least one specific examination will result in the issuance of an NDT Level II certificate, which attests that the certificate holder has successfully completed Level II general and specific examinations in the NDT method(s) and industry sectors indicated on the certificate.

Employers should review the NDT Level II program document to determine whether or not these examinations meet the requirements of their company’s Written Practice. Employers are responsible for administering the visual acuity, practical and any job-specific examinations required by their Written Practice to complete the certification process.