NB/T 47013.3-2015 English PDF (NB/T47013.3-2015)

NB/T 47013.3-2015: Nondestructive testing of pressure equipments - Part 3: Ultrasonic testing [Including 2018XG1]
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NB/T 47013.3-2015
ENERGY INDUSTRY STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
ICS 77.040.20
H 26
Replacing JB/T 4730.3-2005
Nondestructive testing of pressure equipment
- Part 3: Ultrasonic testing
[Including Modification 2018XG1]
ISSUED ON: APRIL 02, 2015
IMPLEMENTED ON: SEPTEMBER 01, 2015
Issued by: National Energy Administration
Table of Contents
Foreword ... 5
1 Scope ... 9
2 Normative references ... 9
3 Terms and definitions ... 10
4 General requirements ... 11
5 Ultrasonic testing methods and quality grading for standby raw material or
components of pressure equipment ... 18
6 Ultrasonic testing method and quality grading of welded joint for pressure
equipment ... 49
7 Ultrasonic measuring methods for thickness of pressure equipment ... 77
8 Ultrasonic testing methods of in-service pressure equipment ... 84
9 Ultrasonic testing records and reports ... 96
Annex A (Normative) Requirements for electrical performance indicators of
ultrasonic testing instruments ... 98
Annex B (Normative) Requirements for performance indicators of probe used
for ultrasonic testing ... 102
Annex C (Normative) Requirements for performance of double-crystal straight
probe ... 104
Annex D (Normative) Ultrasonic testing methods and acceptance standard for
plates used for pressure equipment by using an angle probe... 106
Annex E (Normative) Ultrasonic testing methods (by using an angle probe) and
quality classification of steel forgings used for pressure equipment ... 109
Annex F (Normative) Ultrasonic testing methods (by using an angle probe) for
austenitic steel forgings used for pressure equipment ... 112
Annex G (Normative) Ultrasonic testing method and quality classification of the
welding overlay of pressure equipment ... 114
Annex H (Normative) Ultrasonic testing method and quality classification of the
butt joints of pressure equipment made by aluminum and aluminum alloy and
titanium ... 119
Annex I (Informative) Ultrasonic testing method and quality classification of the
butt joints of austenitic stainless steel ... 123
Annex J (Normative) Ultrasonic testing method of the curved longitudinal butt
joints of pressure equipment ... 132
Annex K (Normative) Ultrasonic testing method of the curved circumferential
butt joints of pressure equipment ... 136
Annex L (Normative) Ultrasonic testing method of fillet joints for nozzles and
shells (or heads) of pressure equipment ... 139
Annex M (Normative) Ultrasonic testing method of T-type welding joints ... 145
Annex N (Normative) Specific requirements for the ultrasonic testing for welding
joints of different types ... 148
Annex O (Normative) CSK-III A Test specimen ... 160
Annex P (Normative) Determination of the loss difference during sound energy
transmission ... 161
Annex Q (Normative) Echo dynamic patterns ... 165
Annex R (Normative) Defect Height Measurement Method (I) Measure defect
height by the endpoint wave diffraction method ... 169
Annex S (Normative) Defect Height Measurement Method (II) The End Echoes
Diffraction Method to Measure the Defect Height ... 176
Annex T (Normative) Defect Height Measurement Method (III) Using -6 dB
method for measuring defect heights ... 179
Modification Notification of Industry Standard NB/T 47013.3-2015 (2018XG1)
... 182
Foreword
This Standard, NB/T 47013 “Nondestructive testing of pressure equipment”, consists
of the following 13 parts:
- Part 1: General requirements;
- Part 2: Radiographic testing;
- Part 3: Ultrasonic testing;
- Part 4: Magnetic particle testing;
- Part 5: Penetrant testing;
- Part 6: Eddy current testing;
- Part 7: Visual testing;
- Part 8: Leak testing;
- Part 9: Acoustic emission testing;
- Part 10: Ultrasonic time of flight diffraction technique testing;
- Part 11: X-ray digital radioscopic examination;
- Part 12: Magnetic flux leakage testing;
- Part 13: Pulsed eddy current testing.
This Part is Part 3: Ultrasonic testing of NB/T 47013.
This Part is drafted according to the rules provided in GB/T 1.1-2009 “Directives for
standardization - Part 1: Structure and drafting of standards”.
This Part replaces JB/T 4730.3-2005 “Nondestructive testing of pressure equipment -
Part 3: Ultrasonic testing”. The main technical changes are as follows, compared with
JB/T 4730.3-2005:
- ADD “terms and definitions”, including terms and definitions related to ultrasonic
testing in the former JB/T 4730.1;
- REPLACE JB/T 10061 “Shape A Pulse Reflection Ultrasonic Flaw Detector -
General Technology Condition” WITH GB/T 27664.1 “Nondestructive Testing
Performance and Inspection of Ultrasonic Testing Equipment - Part 1: Instrument”.
Put forward more scientific requirements for performance of ultrasonic testing
equipment;
- ADD specific performance indicator requirements for ultrasonic test instrument
and probe;
- ADD requirements for calibration, inspection, operational inspection; and check of
ultrasonic test instrument and probe;
- ADD “safety requirements”; and put forward requirements for safety of personnel
in process of ultrasonic test;
- ADD requirements for process files; and list out the related factors to formulate
process procedure;
- RE-DIVIDE types (standard test block and reference block) of test blocks used in
this part; and such division was implemented mainly based on domestic general
standards, instead of dividing types of standard test block and reference block in
this Part;
- ADJUST the sequence of “ultrasonic testing methods and quality grading for
standby raw material or components of pressure equipment”, so as to formulate
in accordance with the order of plate, composite plate, carbon steel and low alloy
steel forgings, steel bolt billet, austenite steel forgings, seamless steel pipe and
so on;
- COMBINE ultrasonic testing methods and quality grading of carbon steel and low
alloy steel, aluminum and aluminum alloy plate, titanium and titanium alloy plate,
as well as nickel and nickel alloy plate, austenite stainless steel and duplex
stainless steel, and so on. Redesign reference blocks. The detection sensitivity
shall be mainly determined by flat bottom hole distance amplitude curves of
reference blocks. Modify the quality grade requirements to stricter requirements
for qualified indicators at all levels. As the plates in JB/T 4730.3-2005 have lower
requirements for testing quality level, it is difficult to control the quality
requirements, and moreover, as it has larger difference from specific indicators as
required by ISO, EU EN and other related quality requirements, therefore, it
modifies the quality grading in accordance with EU EN and other standards;
- INTEGRATE the contents in two chapters of 2005-version, “ultrasonic detection
and quality grading for butt joint of pressure equipment" and "ultrasonic detection
and quality grading for pipe and pressure pipe ring of pressure equipment”.
Classification shall be conducted according to the type of welded joint, base
material nominal thickness and the size of detecting surface curve rate;
- Applicable scope of welded joint base material nominal thickness of pressure
equipment is expanded from 8 mm ~ 400 mm to 6 mm ~ 500 mm;
- REDESIGN the position and the number of the artificial reflector on CSK-IIA and
CSK - IVA blocks. In this way, it not only guarantees the coverage of the detection
area coverage, but also is suitable for adjustment of the straight probe benchmark
sensitivity. New CSK-IIA block is applicable for work piece with thickness scope of
6 mm ~ 200 mm, mainly referring to the European Union (EN) and Japanese
standard (JIS). New CSK-IVA block is applicable for work piece with thickness
scope greater than 200 mm ~ 500 mm, and makes improvement on basis of mainly
referring to the ASME codes. The block diameter of artificial reflector shall be 6
mm;
- REFINE the weld ultrasonic testing requirements for different types. It involves flat
butt joint, T-shaped welded joint, plug-in Angle joint, L-shaped welded joint,
placement type pipe and cylinder (or seal-end socket) angle joint, cross welding
joint, embedded type pipe and cylinder (or end socket) butt joint etc.
- REDESIGN the GS test block. Increase the circular arc surfaces etc. It is mainly
beneficial to adjusting time base of arc probe;
- LIMIT the length of non-crack defect in Zone I in quality grade of weld joint;
- ADJUST overall formulation structure involved in weld joint ultrasonic testing. The
ultrasonic testing method of connecting pipe and cylinder (head) angle joint,
ultrasonic testing method of T-shaped weld joint, ultrasonic testing method and
quality grading of surfacing welding layer are included into the annex;
- ADD “ultrasonic thickness measurement method for the pressure equipment” in
accordance with actual testing requirements, including measurement method for
stainless steel surfacing layer thickness;
- When pressure equipment is used to conduct ultrasonic detection, ADD failure
mode of host materials, components or welded joint which may be caused in use
process or analysis results of risk evaluation to select ultrasonic testing method,
detection parts and detection proportion.
This Part is proposed by and shall be under the jurisdiction of National Technical
Committee on Boiler Pressure Vessel of the Standardization Administration of China
(SAC/TC 262).
Drafting organizations of this Part: Hefei General Machinery Research Institute, China
Special Equipment Inspection Institute, Shanghai Electric and Nuclear Power
Equipment Co., Ltd., China First Heavy Machinery Group Dalian Hydrogenation
Reactor Manufacturing Co., Ltd., Jiangsu Special Equipment Safety Supervision and
Inspection Research Institute, and Lanzhou Lanshi Heavy Equipment Co., Ltd.
Main drafters of this Part: Yan Changzhou, Zheng Hui, Xu Zunyan, Zhou Fengge, Zhou
Yufeng, Tao Yuanhong, Zheng Kai, Gu Jie, Zhang Baozhong and Pan Qianghua.
The historical version of the standards replaced by this Part are as follows:
- JB 4730-1994, JB/T 4730.3-2005.
Nondestructive testing of the pressure equipment -
Part 3: Ultrasonic testing
1 Scope
1.1 This Part of NB/T 47013 specifies the pressure equipment shall adopt ultrasonic
testing method and quality grading requirements in which shape A pulse reflection
ultrasonic detector is used to test work piece defect.
1.2 This Part is applicable to ultrasonic detection for metal material system pressure
equipment with raw materials or components and welded joint, and be applied to
ultrasonic detection of metal materials used in the pressure equipment.
1.3 This Part specifies ultrasonic measuring method for thickness of the pressure
equipment.
1.4 Ultrasonic detection of supporting parts and structural piece related to the pressure
equipment can also refer to this part.
2 Normative references
The following documents are necessary to the application of this document. For all
dated references, only the dated edition applies to this document. for all undated
references, the latest edition (including all amendments) applies.
GB/T 11259 Non-destructive testing - Practice for fabrication and control of steel
reference blocks used in ultrasonic testing
GB/T 12604.1 Non-destructive testing - Terminology - Terms used in ultrasonic
testing
GB/T 27664.1 Non-destructive testing - Characterization and verification of
ultrasonic test equipment - Part 1: Instruments
GB/T 27664.2 Non-destructive testing - Characterization and verification of
ultrasonic test equipment - Part 2: Probes
JB/T 8428 Non-destructive testing - Blocks for ultrasonic testing
JB/T 9214 Non-destructive testing - Practice for evaluating performance
characteristics of A scope ultrasonic pulse - Echo testing systems
JB/T 10062 Testing methods for performance of probes used in ultrasonic flaw
detection
NB/T 47013.1 Nondestructive testing of pressure equipment
3 Terms and definitions
The following terms and definitions in GB/T 12604.1 and NB/T 47013.1 are applicable
to this Part.
3.1
Reduction of backwall echo caused by the presence of discontinuities BG/BF
In time of forging test, ratio of the initial backwall echo BG in the intact area close to
defect place and the initial backwall echo BF within the defect place, expressed as dB
value.
3.2
Grouped discontinuities
In time of forging test, there are five or more defect reflection signals within 50 mm
acoustic distance at the same time on the display screening line, or five or more defect
reflection signals within the same depth scope were found on the inspection surface
of 50 mm × 50 mm, and the reflection amplitude are greater than or equal to defect of
an equivalent flat bottom hole diameter.
3.3
Reference sensitivity
It refers to sensitivity when height of reference block artificial reflection echo or height
of inspected work piece bottom are adjusted to a certain reference.
3.4
Scanning sensitivity
Based on reference sensitivity, dB value (increment) shall be properly improved in
accordance with surface condition, testing defect requirements and probe types to
conduct sensitivity of actual detection.
3.5
Through thickness dimension of the flaw
The size of defect on the direction of base material nominal thickness.
3.6
Echodynamic patterns
Envelope curve of probe moving distance and the corresponding defect reflector echo
envelope changes.
3.7
Base material nominal thickness
Base material nominal thickness is defined as follows:
a) For plate butt joint, when the thickness of the parent materials at both sides of
the weld is equal, the base material nominal thickness t is the nominal thickness
of the parent materials at thinner side;
b) For plug-in connecting pipe Angle joint, base material nominal thickness t is the
nominal thickness of cylinder or end socket; placement connecting pipe and
cylinder (or end socket) Angle joint, the base material nominal thickness t is
nominal thickness of connecting pipe;
c) For T...