Pt Bm 183 Dc 00006 Ut Procedure

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I.E.M.S.A ULTRASONIC EXAMINATION PROCEDURE Code UAN (for QMHA) Page 11-3090 1 of 15 CINOSARTLU EXAMINATION EORUPCCOP Owner : ENPC Main contractor : Uhde Project name : AMMONIA UREA PROJECT 00 First Issue Status 23/02/2011 Ahmed Abdelrahman 23/02/2011 Mohamed Abdellateef Rev Description Status Code: A = Issued for Design D = Issued for Inquiry E = Issued for Order F = Issued for Prefabrication G = Issued for Construction / Fabrication H = Issue for Work Preparation I = As- built M
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    ULTRASONIC EXAMINATION PROCEDURE   Code I.E.M.S.A   UAN (for QMHA) Page 11-3090 1 of 15 00 First Issue 23/02/2011  Ahmed  Abdelrahman 23/02/2011 Mohamed  Abdellateef Rev Status Description Date Prepared Date Checked Date Approved Acc. CC  Category Code: 1 = for approval 2 = for review 3 = for information 4 = for internal use AC  Acceptance Code: 1 = approved / reviewed 2 = approved / reviewed as noted 3 = not accepted 4 = received Status Code:  A = Issued for Design D = Issued for Inquiry E = Issued for Order F = Issued for Prefabrication G = Issued for Construction / Fabrication H = Issue for Work Preparation I = As- built M = General Issue Copyright 2007 Uhde GmbH Doc. ID-Code PT-BM-183-DC-0000 Category INOSARTLU  EXAMINATION   EORUPCOP   Owner : ENPC Main contractor : Uhde Project name : AMMONIA UREA PROJECT    ULTRASONIC EXAMINATION PROCEDURE Code ENPC I.E.M.S.A   UAN (for QMHA) Page 11-3090 2 of 15 Copyright 2007 Uhde GmbH Doc. ID-Code PT-BM-183-DC-000 Rev. 00 CONTENTS   Page 1 Scope   3 2 Purpose   3 3 REFERENCE SPECIFICATION AND CODE   3 4 PERSONNEL QUALIFICATION   3 5 JOINT TYPE   3 6 TEST EQUIPMENT AND MATERIALS   3-4 7 TEST SURFACE PREPARATION   4 8 EQUIPMENT CHECKS   4 9 TIME BASE (DISTANCE ) CALIBRATION 5 10 REFRENCE LEVELS   7 11 DISTANCE AMPLITUDE CORRECTION (DAC)   7 12 TRANSFER CORRECTION   7 13 SCANNING SENSITIVITY   7 14 REFLECTOR EVALUATION   7-9 15 SCANNING AND SCANNING PATTERNS    10 16  REPAIRS    11 17  REPORTING   11 18 ULTRASONIC TEST METHOD FOR WELDED JOINTS:   11-12 19  ACCEPTANCE CRITERIA:   12 20  Attached 13    ULTRASONIC EXAMINATION PROCEDURE Code ENPC I.E.M.S.A   UAN (for QMHA) Page 11-3090 3 of 15 Copyright 2007 Uhde GmbH Doc. ID-Code PT-BM-183-DC-000 Rev. 00 1. SCOPE. This procedure to describe and establish the requirements to performing the ultrasonic examination for the boiler activities during the execution of  Ammonia Urea ENPC project 2. PURPOSE   The purpose of this procedure is to ensure that all ultrasonic inspections are  performed in a controlled manner and are acceptable to the project fabrication specification and controlled cods.   , .   3. REFERENCE SPECIFICATION AND CODES   ã   AD 2000 - Merkblatt HP 5/3 ã   DIN EN 1714 : 1997 + Al : 2002 (ULTRASONIC TESTING OF WELDED JOINTS ) CLASS B ã   EN 1712 ACC LEVEL 2 4. PERSONNELQUALIFICATION.     The performing ultrasonic inspections and interpreting the results shall be qualified in accordance with the requirements of EN-1714:1997+A:2002 Personal shall  be qualified to an appropriate to an appropriate level in accordance with En 473 or equivalent in the relevant industrial sector. (SNT-TC-1 A, to ASNT level II)   5. JOINT TYPE   This procedure shall apply to the ultrasonic inspection of full penetration butt welded and Groove joints.   6. TEST EQUIPMENT AND MATERIALS     6.1 ULTRASONIC APPARATUS   The ultrasonic apparatus shall have an A-scan display, utilizing the pulse-echo system and shall have an supply. Horizontal sweep linearity shall be within 1 % accuracy.The instruments shall have a calibrated gain control accurate to within 1 dB over a 60 dB range. 6.2 PROBES - Search unit frequency shall be from 2.25 MHZ to 4.0 MHZ    ULTRASONIC EXAMINATION PROCEDURE Code ENPC I.E.M.S.A   UAN (for QMHA) Page 11-3090 4 of 15 Copyright 2007 Uhde GmbH Doc. ID-Code PT-BM-183-DC-000 Rev. 00 Search unit type   Search unit frequency   Size   Type   0 deg search unit   2.25 - 4.0 MHZ   10 mm   Twin   45 deg search unit   2.25 - 4.0 MHZ   8*9 mm   Single   60 deg search unit   2.25 - 4.0 MHZ   8*9 mm   Single   70 deg search unit   2.25 - 4.0 MHZ   8*9 mm   Single   ã   Special search units, wedges, shoes or saddles when used   ã   Search units with contoured contact wedges may be used to aid ultrasonic coupling. 6.3 Reference Standard Blocks  IIW Reference blocks (V1&V2).   Bl Reference blocks as in AD2000-Mmarkblatt-HP5/3 Appendix (1) fig. (6) . 6.4 COUPLANT   Wallpaper paste, oil or equivalent.   7 TEST SURFACE PREPARATION   The surface (s) from which testing is to take place shall be thoroughly cleaned to remove, scale, coatings and spatter by light grinding, blasting or power brushing.   The surface shall be prepared up to a distance large enough to accommodate longest probe stand off to be used during joint testing.   The test surface shall be at ambient temperature when testing is performed.   8 EQUIPMENT CHECKS:   Equipment checks shall be performed using IIW and Bl standard reference blocks. Checks shall be performed at least every 4 hours of the testing and on completion of the testing and whenever a system parameter is changed. 8.1 Horizontal linearity   Using the highest frequency longitudinal wave probe available on the flat surface of the IIW standard reference block and using 4 echoes- place the left hand side of the signal to coincide with consecutive horizontal scale divisions.   Checks shall be performed to cover all anticipated test ranges and the maximum deviation shall not exceed 1% of full scale range.   8.2 Beam angle.   Using the IIW block 100mm quadrant, maximize the echo signal by moving the probe paralle to the sides of the block .The index point directly above the quadrant center point is thin marked on the side of the probe .   8.3 Beam angle   Using the IIW block 50 mm hole to check probe angles ,maximize the echo Signal and note the  beam angle engraved on the block directly below the probe index point.   8.4 Transducer sensitivity   Each transducer shall be capable of producing a 3/4 FSH signal from 100 mm quadrant of the IIW calibration standard with 40 dB amplification in reserve.  
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