PT BM 183 DC 00006 Ut Procedure [PDF]

Zitiervorschau

I.E.M.S.A

Code

ULTRASONIC EXAMINATION PROCEDURE

UAN (for QMHA)

Page

11-3090

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ULTRASONIC EXAMINATION PROCEDURE Owner : ENPC Main contractor : Uhde Project name : AMMONIA UREA PROJECT

00 Rev

Status

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

First Issue

11/6/2010

Emad Omar

11/6/2010

Hassan Basha

Description

Date

Prepared

Date

Checked

Date

Approved

Acc.

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-00006

Category 1

ULTRASONIC EXAMINATION PROCEDURE

I.E.M.S.A

CONTENTS

Code ENPC UAN (for QMHA)

Page

11-3090

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Page

1

Scope

3

2

Reference documents

3

3

Personal Qualification

3

4

Test equipment

3

5

Use of couplant

3

6

Probe control

3

7

Basic calibration block

4

8

Calibration

4

9

Calibration frequency

4

10

Inspection procedure

4

11

Time of examination

5

12

Evaluation

5

13

Records

5

14

Application

5

15

Reporting

5

Copyright 2007 Uhde GmbH

Doc. ID-Code PT-BM-183-DC-00006

Rev.

00

I.E.M.S.A

ULTRASONIC EXAMINATION PROCEDURE

Code ENPC UAN (for QMHA)

Page

11-3090

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1. SCOPE. This procedure to describe and establish the requirements to performing the ultrasonic examination for the piping activities during the execution of Ammonia Urea ENPC project 2. REFERENCE DOCUMENTS.  BS EN ISO 5817 B  EN 1714: 1997 +A1:2002  EN 583 PART 1,2  AD 2000- Merkblatt. 3. PERSONNEL.  The personal for the examination / supervision shall fulfill the requirements according to the qualification /certification the standard EN-473 shall apply or equivalent (Qualified and Certified According To ASNT- TC -1A (LEVEL

II) 

Accept / reject decisions shall be made by a Level II or Level III Qualified inspector.

4. TEST EQUIPMENT  All inspection shall be conducted with ultrasonic pulse refection system suitable of frequency between 1 and 5 MHz the probe nominal frequency shall be 2.25 MHz inspection shall carried out using longitudinal wave and shear wave probes with incident angle of 45 to 70 degrees.  If necessary probes having incident angles or frequencies, may be used. 5. USE OF COUPLANT  The following products can be used to maintain sonic contact :  Mineral oil.  Couplant compound.  Celluloses glue. 6. PROBE CONTROL 6.1. Angle beam probes Calibration of distance and sensitivity shall be made using block IIW-V to verify  The exit point of the ultrasonic beam.  The index point of the probe.  The emission angle of the sound beam. 6.2. Straight beam probes 

The probe resolution power will be checked.

Copyright 2007 Uhde GmbH

Doc. ID-Code PT-BM-183-DC-00006

Rev.

00

I.E.M.S.A

ULTRASONIC EXAMINATION PROCEDURE

Code ENPC UAN (for QMHA)

Page

11-3090

4 of 6

7. BASIC CALIBRITION BLOCK The basic calibration block shall be used to establish a primary reference response of the equipment. The material form which the block is fabricated shall be a section of pipe of the same nominal size, schedule, heat treatment and equivalent P-Number grouping as one of the materials being examined. 8. CALIBRATION For both angle and straight beam, the applicable code and referenced techniques will be used. 9. CALIBRATION FERQUENCY An overall control of calibration is required in the following instances: a) Before starting series of examinations. b) Every four hours. c) At the end of series of examinations. d) In case of doubt. e) After replacement of equipment parts. 10. INSPECTION PROCEDURE  Contact surface. The contact surface shall have to be free from weld spatters, dirt, scales, paint or anything else interfering with the travel of the probe or the transmission of ultrasonic waves. 

Scanning All scanning shall be conducted at speed not exceeding 150mm per second. To assure complete coverage of the weld volume, each pass of the search unit has to be moved with at least 10% overlap of the transducer (piezoelectric element). Straight beam scanning of the adjacent base metal shall be performed to detected reflectors that might affect interpretation of angle beam results.



Angle beam scanning for reflectors oriented parallel to the weld. The angle beam shall be directed at approximately right angles to the weld axis from two directions where possible. The search unit shall be manipulated so that the ultrasonic energy passed thought the required volumes of weld and adjacent base metal. The scanning shall be performed at a gain setting at least two times the primary reference level. Evaluation shall be performed with respect to the primary reference level.



Angle beam scanning for reflectors oriented transverse to the weld The angle beam shall be directed essentially parallel to weld axis. The search unit shall be manipulated so that the angle beam passes through the volumes of weld and adjacent base metal. The scanning shall be performed at a gain setting at least two times the primary reference level. Evaluation shall be performed with respect to primary reference level. The search unit shall be rotated 180 deg. And the examination repeated.

Copyright 2007 Uhde GmbH

Doc. ID-Code PT-BM-183-DC-00006

Rev.

00

I.E.M.S.A

ULTRASONIC EXAMINATION PROCEDURE

Code ENPC UAN (for QMHA)

Page

11-3090

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11. TIME OF EXAMINATION The ultrasonic examination of welds shall be performed after heat treatment (when required). 12. Evaluation Any imperfection which causes an indication exceeding the acceptance criteria of the applied codes will be reported. 13. RECORDS The inspection data shall recorded on the relevant forms.

14- Application:. Ultrasonic test shall be performed for weld joints with wall thickness > 20 mm. An ultrasonic examination can be performed instead of radiographic examination 15- Reporting: See the attachment report. .

Project : Ammonia Urea ENPC project Copyright 2007 Uhde GmbH

Client : Uhde- ENPC Doc. ID-Code PT-BM-183-DC-00006

Rev.

00

I.E.M.S.A Procedure : EN 1714 Surface condition : BRUSHED Examination technique : UT equipment :

E L Q t I d D A NOTE.

ENPC UAN (for QMHA)

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Applicable code : Couplant : Serial no.

Probe No. / Vibration Mode Frequency Size Angle Type Calibration Sheet Range Reference Echo Ref. Echo Distance Gain Damping /Reject Attenuate Correction

DWG/ISO: Size: JOINT DIM NO. (inch)

Code

ULTRASONIC EXAMINATION PROCEDURE

1

2

3

4

MHZ mm

No. mm mm mm dB dB

DISCONTINUITY THK (mm)

MATERIAL CLASS

PROBE

E (dB )

H %

L mm

Q m m

t m m

I m m

d m m

D m m

RESULT

REFERANCE LEVEL - H : MAX % GREATER THAN REF. LEVEL. DISTANCE OF DISCONTINUITY FROM WELD AXIS DISTANCE OF DISCONTINUITY FROM WELD AXIS DISTANCE OF DISCONTINUITY FROM PROBE CONTACT SURFACE LENGTH OF DISCONTINUITY DEPTH OF DISCONTINUITY THROUGH DEBTH OF DISCONTINUITY ACCEPTED - R : TO BE REPAIRED

IEMSA

PETROJT

UHDE

ENPC

Name Sign Date

Copyright 2007 Uhde GmbH

Doc. ID-Code PT-BM-183-DC-00006

Rev.

00