Name of Project KAKRAPAR ATOMIC POWER PROJECT # 3 & 4

PackageAir Conditioning and Ventilation System

Document TitleUltrasonic Test Procedure of Shaft

Document No.AV2K14-060-V-157 (Rev. R0)Date: 27.02.2015

VendorAdvance Ventilation Pvt. Ltd

TEST PROCEDURE FOR ULTRASONIC TEST OF SHAFT1. Scope: This procedure gives the technique and acceptance standard for Ultrasonic Examination of Round Bars.2. Applicable Document:

ASME Section V Article 23 SA 388

ASME Section III NB 2542

PP-P-2012 Rev. 1

3. Personnel Qualification Requirement: Personnel carrying out UT shall be qualified to minimum Level II to UT as per the guidelines of SNT-RC-IA of ASNT or by ISNT.

4. Job Details:

Project:

Balance of Turbine Island Package Kakrapar Atomic Power Project 3 & 4

NPCIL PO No.: CMM/MEQ/23-40-2-1040/PO/6086 & 6087 dated 28/09/2011

Dodsal PO No.: 03/PEN/75/YAS/PO/057/059-00/13 dated 29.11.2013

Material EN-8

Size of Forging: 5. Surface Condition: Surface of the bars shall be smooth and free from dirt, loose scales etc. which may impaiur beam transmission.

6. Stage of examination: As rolled

7. Instrument: Pulse-echo type A scan display meeting the requirements of ASME Section V Article 5 regarding linearity. EEC Ex 10, Einstein II TFT or equivalent may be used that can work in the frequency range of 1 to 5 MHz.

8. Probe:Longitudinal Wave - 0 - 2 or 4 MHz 10 or 24 mm (Single type for > 50 mm)

Leensar / NDT / EEC / Modsonic make shall be used

Doc. No.: MES / R & DM / UT / Bars / 08-07-2014 Rev.1

9. Couplant: Oil which shall not contain sulphur or halides more than 250 ppm. Couplant used for calibration and examination shall be same.10. Calibration block: Reference specimen containing flat-bottomed holes of size mentioned in the Table at D, D and D shall be used. Reference specimen shall be made from the same material of same heat and heat treatment received. A reference specimen of diameter D shall be valid for diameter 0.9 D to 1.5 D.11. Calibration: Using appropriate range and gain, the indication from FBH at D of the reference specimen shall be brought to 80 5% FSH and marked. Without changing the setting, the indication from D and D shall be peaked to maximum and marked. Join these marks to obtain DAC which shall be the reference level.12. Scanning: Scanning shall be done 100% in radial direction with 10% overlap. Scanning shall be done at + 6 dB of reference level. Evaluation shall be done at reference level. Scanning speed shall not exceed than what is demonstrated for picking up reference reflector at + 6 dB of reference level. Scanning shall be done in axial direction using back wall echo technique from end face. Scanning shall be done at + 6 dB. Evaluation shall be at reference sensitivity.13. Acceptance Criteria: for Radial Scanning:

(a) Any indication of discontinuity exceeding reference level shall be not acceptable.

(b) Any indication of discontinuity causing complete loss of back echo shall be not acceptable

For Axial Scanning:

Any indication of discontinuity causing complete loss of back echo shall be not acceptable

14. Report: A report giving all relevant details including indications causing a reponse greater than 50% of reference level shall be furnished on completion of examination. Specimen Report format is attached.

15. Post Cleaning: Post cleaning shall be done with dry cloth and followed by solvent moistened cloth to remove all traces of cpuplant used for examination.TABLE

Diameter of Bar to be examinedSize of FBH as reference reflector mm

Up to 50 mm1.2

51 to 80 mm1.8

81 to 100 mm2.-0

101 to 125 mm2.5

125 to 150 mm3.0

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