BALANCE FIELD ELECTROMAGNETIC TECHNIQUE INSPECTION REPORT OF THE 8_INCH_1260_FITTING (HA-2/1200 BLOCK) TESTEX, INC. TESTED: JANUARY 9, 2019

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1 STATE OF THE ART PRODUCTS & SERVICES FOR NON-DESTRUCTIVE TESTING BALANCE FIELD ELECTROMAGNETIC TECHNIQUE INSPECTION REPORT OF THE 8_INCH_1260_FITTING (HA-2/1200 BLOCK) AT IN BY TESTEX, INC. TESTED: JANUARY 9, 2019 AUTHOR: REVIEWED BY: REVIEWED DATE: JANUARY 9, 2019 Website: PITTSBURGH (H.Q.) HOUSTON SOUTH BEND ATLANTA PHILADELPHIA NEW ORLEANS Tel: (412) Tel: (713) Tel: (574) Tel: (770) Tel: (215) Tel: (504) Fax: (412) Fax: (713) Fax: (574) Fax: (770) Fax: (215) Fax: (504) BAKERSFIELD CANADA JAPAN INDIA UNITED KINGDOM FRANCE Tel: (661) Tel: (506) Tel: Tel: Tel: Tel: Fax: (661) Fax: (506) Fax: Fax: Fax: Fax:

2 TABLE OF CONTENTS 1.0 RESULTS AND CONCLUSIONS UNIT DETAILS VESSEL TEST MAP TYPICAL WAVEFORM APPENDIX A SAMPLE WAVEFORMS APPENDIX B CALIBRATION APPENDIX C TEST METHODS / PROCEDURES APPENDIX D PRELIMINARY REPORT

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4 2.0 UNIT DETAILS 8_INCH_1260_FITTING (HA-2/1200 BLOCK) Orientation: Material: Height: Vertical Stainless Steel 2 nd Deck Diameter: 8 x SCH x NWT Length: ~

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7 APPENDIX A SAMPLE WAVEFORMS

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9 APPENDIX B CALIBRATION

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11 APPENDIX C TEST METHODS / PROCEDURES

12 APPENDIX C - Test Methods / Procedures and Equipment Description HAWKEYE Weld Scanning System The Hawkeye Weld Scanning System is based on the eddy current principles of electromagnetic techniques and replaces the old laborious techniques such as vacuum box, dye penetrant, or magnetic particle inspection. Unlike UT, the system does not demand a clean surface and is forgiving to scale, corrosion products, etc. ECT Theory of Operation Wall losses and pitting can be detected by injecting a high frequency magnetic field into the material and measuring the distortions in the resulting magnetic field that occur in a flawed region of the material. This distortion in the magnetic field can be measured as a change in phase and amplitude in the secondary voltage generated by the material and is based on the reflective impedance method. Equipment Description ELECTRONICS: The TS-2000 System is an all-digital, microprocessor-controlled instrument. It contains all necessary electronics for collection of data using the Eddy Current Inspection Principles Method SOFTWARE: The Hawkeye Weld Scan System contains all software for data acquisition. The software consists of two separate modules: the data acquisition module, and the data analysis and display module. The data acquisition module collects the tube data at a given sample rate. The menu driven, user-oriented program provides for real-time display of phase, amplitude and probe position in the tube. The row of the tube, probe speed and other bookkeeping details are also handled by the data acquisition module. The data analysis and display module contains the calibration curves for wall thinning, volume losses, pits, vibration/fret wear and correlates the calibration standard information with the actual plant data for flaw sizing and evaluation. It has routines for digital filtering, averaging techniques, background evaluation, curve fitting, and other useful signal processing techniques. -7-

13 Detection Accuracy The TesTex, Inc. developed lock-in amplifier is capable of measuring very low level signals in the microvolt range and can measure small phase angle changes of a fraction of a degree, even in the presence of a considerable amount of noise. The system, when used in conjunction with the calibration standards: partial and thru-wall pitting, gradual wall thinning, vibration/fret wear, comes within five volume percent. Calibration is always performed in our lab prior to leaving for the job site. The same calibration is then performed at the job site. This assures that the overall system experiences no interference by drift, changes in line voltage, or other RF interference at the site. We also use an isolation transformer to clean up line noise. -8-