Test Procedure No. 01/2025/UT
Issue: 00
Date: 06.03.2025
Revision: 00
Date: 06.03.2025
UT ultrasonic testing of bracket welds
Table of contents
1.
Objective .......................................................................................................................................3
2.
Range of the test quantity .............................................................................................................3
3.
Requirements and reference documents .......................................................................................3
4.
Responsible persons ......................................................................................................................3
5.
Qualifications ................................................................................................................................3
6.
Personnel and material resources ..................................................................................................4
7.
Implementing mode ......................................................................................................................4
7.1.
Agreements between the contracting parties .............................................................................6
7.2.
Selection of test equipment and staff ........................................................................................6
7.2.1.
Choice of apparatus ...............................................................................................................6
7.2.2.
Selection of heads ..................................................................................................................6
7.2.3.
Benchmarks ...........................................................................................................................6
7.2.4.
Coupling agents .....................................................................................................................6
7.2.5.
Staff qualifications .................................................................................................................6
7.3.
Performance of tests ..................................................................................................................7
7.3.1.
Preparation of welded joints for testing.................................................................................7
7.3.2.
Control of apparatus ..............................................................................................................7
7.3.3.
Determination of search area .................................................................................................7
7.3.4.
Determination of range and sensitivity..................................................................................7
7.3.5.
Reference level ......................................................................................................................7
7.3.6.
Assessment level....................................................................................................................7
7.3.7.
Amendment to carry-forward losses......................................................................................7
7.3.8.
Signal-to-noise ratio ..............................................................................................................7
7.3.9.
Study of basic material. .........................................................................................................7
7.3.10. Determining the level of research ..........................................................................................7
7.3.11. Tests of welded joints ............................................................................................................7
7.3.12. Evaluation of test results........................................................................................................8
7.4.
Corrective action .......................................................................................................................8
7.5.
Archiving ...................................................................................................................................8
8.
Handling of samples .....................................................................................................................8
9.
Presentation of research results .....................................................................................................8
10.
Dealing with non-compliance ...................................................................................................8
11.
Dissemination of research documents .......................................................................................8
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Test Procedure No. 01/2025/UT
Issue: 00
Date: 06.03.2025
Revision: 00
Date: 06.03.2025
UT ultrasonic testing of bracket welds
12.
Additional information ..............................................................................................................8
Elaborated:
Approved:
(signature)
(signature)
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Test Procedure No. 01/2025/UT
Issue: 00
Date: 06.03.2025
Revision: 00
Date: 06.03.2025
UT ultrasonic testing of bracket welds
1. Objective
The purpose of the procedure is to establish the procedure for ultrasonic testing of welded jointsbracket .
2. Range of the test quantity
The procedure applies to activities related to:
• preliminary findings,
• selection of test equipment and its control,
• specifying the search area,
• tests on the base material and the weld,
• evaluation of research results.
3. Requirements and reference documents
Standards:
• PN-EN ISO 6520-1:2009
• PN-EN ISO/IEC 17025:2018-02
• PN-EN ISO 9712:2022-09
• PN-EN ISO 16810:2014-06
• PN-EN ISO 16811:2014-06
• PN-EN ISO 17640:2019-01
• PN-EN ISO 2400:2013-03
• PN-EN ISO 7963:2023-05
• PN-EN ISO 11666:2018-04
• PN-EN ISO 17635:2017-02
• PN-EN 10160:2001
• PN-EN 5577:2017-04
• PN-EN ISO 22232-1:2021-02
• PN-EN ISO 22232-2:2021-03
• PN-EN ISO 22232-3:2021-03
• PN-EN ISO 5817:2023-08
• PN-EN ISO 9000:2015-10
• or by separate arrangement with the client.
4. Responsible persons
Persons responsible for carrying out the tests - employees designated by the Laboratory Manager to carry out
the tests.
Person responsible for all activities resulting from the testing - Laboratory Manager. The responsibility of
supervision and testing personnel must be in accordance with EN ISO 9712:2022-09. Certified NDT personnel are responsible for the implementation of the procedure.
5. Qualifications
The test persons shall be qualified to carry out the tests in accordance with the company's procedures, i.e. at
least grade II in the method concerned (according to EN ISO 9712:2022-09). The test supervisors must have a
min. degree III in the respective method. In addition, such personnel must have:
- an important testimony to vision,
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Test Procedure No. 01/2025/UT
Issue: 00
Date: 06.03.2025
Revision: 00
Date: 06.03.2025
UT ultrasonic testing of bracket welds
- written authorisation from the employer,
- OSH, fire and axis training, on the job.
6. Staff and material resources
The persons to carry out the tests shall be appointed by the Laboratory Manager on a case-by-case basis,
depending on the type and scope of the tests and taking into account their qualifications.
Materials: ultrasonic defectoscopes Sonotec Sonoscreen ST-10of the types Krautkramer USM35XS, , Olympus Epoch or equivalent with equipment, standards.
7. Implementing mode
-Visual surveys
Prior to ultrasonic testing, the external surface of the entire object to be tested shall be visually examined
in
accordance
with
the
Test
Procedure
"Visual
testing
of
welded
joints".
Ultrasonic
testing
may
be
carried
out
when, as a result of visual testing, the welded joint has achieved the required class in accordance with the
documentation or the customer's guidelines.
-Surface condition of the head travel areas
Test surface requirements - corrosion coating removed in a 300mm x 300mm area around the bracket.
Except in the upper part. In the upper part it is allowed to clean min. 160 mm
-Conducting surveys
(a) Equipment and facilities
Tests shall be carried out using ultrasonic test kits meeting the requirements set out in points 5.1 ÷ 5.4 of
this
() bCurrent inspection of apparatus
Prior to testing, carry out an inspection of the apparatus in accordance with EN ISO 22232-3:2021-03 ()
cSetting the sensitivity of the test
For testing welded joints, use method No. 1 according to EN ISO 17640:2019-01.
to scale Use gauges sensitivity settings.with through-holes fi 3mm
NOTE!
The correctness of the setting should be checked every 4 hours and at the end of the tests. Checking should
also be carried out when a change has been made to the test system (replacement of the head, defectoscope-head connection cable) or when decalibration is suspected. If deviations are found during the setup check, corrections should be made in accordance with EN ISO 17640:2019-01.
() dDetermination of the transition loss correction
The correction should be determined using two oblique heads of the same type as the head to be tested
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Test Procedure No. 01/2025/UT
Issue: 00
Date: 06.03.2025
Revision: 00
Date: 06.03.2025
UT ultrasonic testing of bracket welds
Fig. 1 - Determination of the transfer loss correction
(a) the position of the heads on the template No 1; (b) the position of the heads on the test material
(c) screen defectoscopewith ED echo curve, wave transition pulses
E1 - on the template
E2 - on test material
ΔWp - correction equal to the gain difference at which the pulses reach the echo
bottom curve.
We calculate the transition loss correction ΔWp from the formula:
ΔWp = Wd2 - Wd1 + (W1 - W2)
If the transition loss differences are less than or equal to 2 dB as the gain of the calibrated test defectoscope
- a correction is not necessary. If the differences are greater than 2 dB but not greater than 12 dB, a correction
must be made.
If the differences on the transition loss are greater than 12 dB, the cause of this phenomenon must be
found and the search area reworked if necessary.
(g) Method of
The method of testing is described in EN ISO 16810:2014-06.
Test from both available head travel areas for BW welds 1 to 4
Test level B in accordance with EN ISO 17640:2019-01.
Test piece - 4 bracket welds
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Test Procedure No. 01/2025/UT
Issue: 00
Date: 06.03.2025
Revision: 00
Date: 06.03.2025
UT ultrasonic testing of bracket welds
7.1. Agreements between the contracting parties
The following arrangements must be made prior to testing(in writing) :
• preparation, dimensions and marking of welded joints
• welding technologies,
• description of the product to be tested,
• acceptance conditions: standards, regulations, technical requirements, contract.
• test protocol requirements,
• corrective action procedures.
7.2. Selection of test equipment and staff
7.2.1. Choice of apparatus
The test apparatus should meet the requirements of EN ISO 22232-1,2,3.:2021
E.g. Krautkramer USM35 XS
7.2.2. Selection of heads
Straight heads:
Transducer diameter
Recommended frequencies
Ø10
4 MHz
Angled heads
Material thickness
Recommended angle
Recommended frequencies
12 mm
45° , 60° ,70°
4 MHz
7.2.3. Benchmarks
For the scaling of apparatus and heads, a standard in accordance with PN-EN is used.ISO 2400:2013-03 No1
(W1) or a standard in accordance with PN-EN ISO 7963:2023-05 No2 (W2)
The standards proposed in EN are used to determine carryover lossesISO 16811:2014-06 .
To set the sensitivity of the test, use a standard similar in grade to the components to be tested with a 3 mm
pinhole.
7.2.4. Coupling agents
The following coupling measures are used:
• wallpaper adhesive solution,
7.2.5. Staff qualifications
Test personnel have a qualification level 2 in accordance with EN ISO 9712:2022-09
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Test Procedure No. 01/2025/UT
Issue: 00
Date: 06.03.2025
Revision: 00
Date: 06.03.2025
UT ultrasonic testing of bracket welds
7.3. Performance of tests
7.3.1. Preparation of welded joints for testing
Tested surfaces should be even and free of dirt, creases and ripples in accordance with EN 17640:2019-01
7.3.2. Control of apparatus
Visually inspect the ultrasound equipment: heads, cables, standards, time base linearity, instrument gain linearity, head centre, beam angle, sensitivity and signal-to-noise ratio and pulse width.
7.3.3. Determination of search area
Use the entire available width of the search area on both sides of the bracket.
7.3.4. Determination of range and sensitivity
Test sensitivity set at 3 mm Ø pinhole + 10 dB
7.3.5. Reference level
Reference level setting - fi 3 + 6 dB
7.3.6. Evaluation level
All indications that reach or exceed the reference level of 4 dB are assessed.
The level of assessment and acceptance shall be carried out in accordance with EN ISO 11666:2018-04
7.3.7. Amendment to carry-forward losses
To compensate for differences in the connection conditions between the reference block and the object surface,
the amount of attenuation must be measured. The techniques used are described in EN ISO 16811:2014-06.
7.3.8. Signal-to-noise ratio
When testing welds, the evaluation level should be at least 12 dB above the noise indications excluding apparent indications from the surface.
7.3.9. Study of basic material.
Test tower wall the base material in the area of the with a normal head or double 0° before and after welding.
7.3.10. Determining the level of research
EN 17640:2019-01 describes 4 levels of testing (A, B, C and D). The test levels are linked by quality levels
e.g: EN ISO 5817:2023-08.The required level can be changed by agreement with the customer.
7.3.11. Testing of welded joints
Ultrasonic testing, indication localisation and indication evaluation are carried out in accordance with PN-EN
ISO 16810:2014-06, PN-EN 17640:2019-01.
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Test Procedure No. 01/2025/UT
Issue: 00
Date: 06.03.2025
Revision: 00
Date: 06.03.2025
UT ultrasonic testing of bracket welds
7.3.12. Evaluation of test results
The evaluation of the test results is carried out in accordance with EN 17640:2019-01. The evaluation of the
test results is given in the ultrasonic test . protocol
7.4.
Corrective action
If the acceptance level does not correspond to the established acceptance criteria, corrective action must be
taken.
This includes marking the areas to be repaired, cutting them out and welding them. The repair must be carried
out in accordance with the instructions Repair of welded joints
After the repair has been carried out, the ultrasonic tests should be repeated.
7.5. Archiving
The reports of the test welded joints should be stored according to the procedure for 10 years.
8. Dealing with designation
The test is carried out on equipment and components with their identification established - mark : the weldsBW
No. 1 to 4
9. Presentation of research results
The test results shall be given in a test report signed by:
• persons performing the test,
• approval person: personnel with a third degree in the method,
10. Dealing with non-compliance
If any non-conformity is found, the investigator shall report it to the Laboratory Manager, who, after an explanation, shall implement a procedure based on the relevant general procedure.
11. Dissemination of research documents
Test reports and/or other forms of presentation of test results may be disseminated additionally only with the
agreement of the principal and the Laboratory.
The basic distribution of the documents produced is given in these documents or in the covering letter.
Other forms of dissemination of research documents are permitted if required by specific regulations of other
competent bodies.
12. Additional information
The procedure is applicable during 's surveysAlpin Weld.
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