|
|
发表于 2010-4-29 11:05:42
|
显示全部楼层
本帖最后由 qinsdau 于 2010-4-29 11:08 编辑
供参考：
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:1 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
ULTRASONIC EXAMINATION PROCEDURE
超 声 波 检 验 工 艺 规 程
CONTROLLED
在控本□
UNCONTROLLED
非在控本□
COPY NO 副本编号：
PREPARED BY 编制：
DATE 日期：
REVIEWED BY 审核：
DATE 日期：
APPROVED BY 批准：
DATE 日期：
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:2 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
DEMONSTRATION CERTIFICATION
I hereby certify
that
this
procedure
has
been demonstrated on
a
test
specimen
with
known
defects to the satisfaction of
the Authorized
Inspector
according to the ASME Code Section V, T-150 as required by Section Ⅷ Div.1.
UW-53 and Appendix 12.
Test Specimen No.:
Demo. Report No.:
NDE Level Ⅲ:
AI:
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:3 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
1. SCOPE OF APPLICATION 1.适用范围
This procedure is compiled in accordance with the requirements of ASME Code Section V and Section Ⅷ Division 1. 1.1本规程按ASME 第V卷和第Ⅷ第1分册要求编制。
1.2 In accordance with this procedure a pulse-echo type of ultrasonic instrument shall be used for Code product examination. Single probe, angle beam scanning shall be the principal method, if necessary, straight beam scanning may also be used. 1.2按规程对规范产品的检查用脉冲反射式超声波探伤仪。以单斜探 头扫查为主要方法，必要时可辅以直探头扫查。
1.3 This procedure is applicable for ultrasonic examination of butt-welded, full penetrated joint in wrought ( rolled, drawn, forged or extruded) material with thickness equal to or greater than 5/16in.(8mm) detecting, locating and evaluating the reflectors from the weld metal, heat affected zone and base metal adjacent the weld. 1.3本规程适用于板厚≥8mm钢制压力 容器全焊透对接焊缝的超声检查(包括焊缝金属和热影响区)。
1.4 Ultrasonic examination of single side welded partial penetrated welds and austenitic steel welds are not considered to be within the scope of this procedure. 1.4本规程不适用于单面焊部分焊透焊缝的检查，也不适用于奥氏体钢焊缝的的检查。
1.5 Unless other procedure has been approved and accepted that may specify particular requirements, ultrasonic examination relating to method, evaluation, and detailed technique and requirement shall be in accordance with this procedure. 1.5除非其他程序经批准、有关具体要求经认可，UT有关方法、评定、要求应按本规程。
2. NDE PERSONNEL 2.无损探伤人员
2.1 NDE personnel shall be qualified and certified according to NJBST’S Written Practice QCD-011 based on SNT –TC-IA (Current Code Accepted Edition). 2.1无损探伤人员应按本公司根据SNT-TC-IA(现行版)制定的“NDE人员培训、考试、资格鉴定和认证的实施细则”进行资格鉴定和认证。
3. GENERAL EXAMINATION REQUIREMENTS 3.一般探伤要求
3.1 Examination coverage 3.1探测范围
应通过探头在探测面的移动，使焊缝全体积均受超声束扫查。探头的扫查路径应至少重叠探头横向宽度的10%
The volume shall be examined by moving the search unit over the examination surface so as to scan the entire examination volume .Each pass of the search unit shall overlap a minimum of 10% of the transducer (piezo-electric element) dimension perpendicular to the direction of the scan. 3.2探头移动速度
3.2 Speed of Search Unit Movements 探伤时，探头移动速度应不大于150mm/s。
The speed of search unit movement for examination shall not exceed 6 in./sec (150mm/sec.) 3.3记录水平
3.3 Recording Level 凡波高超过50% DAC基准线而未予返修的讯号均应记录在案。
All reflections from uncorrected areas having responses that exceed 50% of reference level shall be recorded. This record shall locate each area, the response level, the dimensions, the depth below the surface, and the classification. 4.超声仪、探头和参数
4. ULTRASONIC INSTRUMENT, SEARCH UNIT AND PARAMETERS 4.1 超声仪
4.1 Ultrasonic Instrument 应使用下列脉冲反射式超声仪：
A pulse-echo type of ultrasonic instrument shall be used. The following instruments are recommended in examination.
Instrument Type Manufactured by 仪器型号 制造单位
CTS-26 Shantou, China CTS 26 汕头超声仪器厂
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:4 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
Search Unit type Beam Angle(β) Frequency Manufactured 4.2 探头
by 直探头直径应为14~25mm.斜探头应根据被检工件厚度适当选用(参照下表)：
2.5P 450 2.5MHz Shantou, China 探头折射角与被检壁厚关系：
8x12 4.3 频率
2.5P 560 2.5MHz Shantou, China 通常应频率2.5MHz，对薄板，可采用5MHz 。
8x12 4.4 屏高线性
2.5P 630 2.5MHz Shantou, China 超声应提供±5%满屏高的垂直线性(在20%至80%校正屏高的范围内)。
8x12 屏高线性的测评方法按ASME 第V卷A篇第5章附录Ⅰ，应在每一周期开始(或每3个月，取两者中时短者)测评一次。
2.5P 680 2.5MHz Shantou, China 4.5 波幅控制线性
8x12 为能测量示波屏上超出垂直线性范围的信号，超声仪应有在有用范围内可精确到标称波幅比±20%的波幅控制器。评定波幅控制线性的方法，见ASME第V卷第5章附录Ⅱ。此评定应在每一延长使用周期开始时进行(或每3个月进行一次，取两者中较短的时间)。
4.6 设备校验
对探伤设备应使用校正试块于每次检查开始和结束时进行性能校验，当探伤人员更换时，或怀疑有故障时，也要校验。校验时发现探伤设备性能不佳时，所有产品均应重新检查(自设备上次有效校验算起)。
Wall Thickness (mm) Beam Angle (β) K Value (tgβ) 5. 校正
8月25日 720-630 3.0-2.0 5.1 基本校正试块
>25-46 680-560 2.5-1.5
>46 630-450 2.0-1.0
壁厚(mm) 折射角(β) K 值 (tgβ)
8月25日 720-630 3.0-2.0
>25-46 680-560 2.5-1.5
>46 630-450 2.0-1.0
探头 折射角(β) 频率 制造
单位
2.5P 8x12 450 2.5MHz 汕头超声仪器厂
2.5P 8x12 560 2.5MHz 汕头超声仪器厂
2.5P 8x12 630 2.5MHz 汕头超声仪器厂
2.5P 8x12 680 2.5MHz 汕头超声仪器厂
4.2 Search Unit
For straight beam, the diameter of transducer shall be 14mm-25mm. For angle beam, an angle shall be selected as appropriate for the configuration being examined. The following search units are recommended to be used in examination:
The range of angle is recommended as following:
4.3 Frequency
Generally, the frequency of 2.5MHz shall be used. For the thinner plate, 5MHz may be used.
4.4 Screen Height linearity
The ultrasonic instrument shall provide linear vertical presentation within±5% of the full screen height for 20% to 80 of the calibrated screen height (base line to maximum calibrated screen point(s)). The procedure for evaluating screen height linearity is provided in Appendix Ⅰof ASME Code Sect. V Sub. A Article 5 and shall be performed at the beginning of each period of extended use (or every 3 months, whichever is less).
4.5 Amplitude Control Linearity
The ultrasonic instrument shall utilize an amplitude control accurate over its useful range to ±20% of the nominal amplitude ratio, to allow measurement of indications beyond the linear range of the vertical display on the screen. The procedure for evaluating amplitude control linearity is given in ASME Sect V. Art .5. Appendix Ⅱand shall be performed at the beginning of each period of extended use(or every 3 months, whichever is less).
4.6 Checking and Calibration of Equipment
The proper functioning of the examination equipment shall be checked and the equipment shall be calibrated by the use of the calibration standard at the beginning and end of each examination., when examination personnel are changed, and at any time that malfunctioning is suspected as a minimum. If during any check it is determined that the testing equipment is not functioning properly, all of the product that has been tested since the last valid equipment calibration shall be reexamined.
5. CALIBRATION
5.1 Basic Calibration Block Configuration
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:5 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
Thickness of Weld(T) Thickness of Block (T) Hole Diameter Notch Size 应使用能测定设备主要基准性能的基本校正反射体。这些反射体可设定在基本校正试块或试样中。
焊缝厚度(T) 试块厚度(T) 孔径 切槽尺寸 图1 基本校正试块
≤1 (25.4) 3/4(19.05) or t 3/32 (2.4) width = 1/8to1/4(3.2~6.4)
>1-2(25.4 ~50.8) 1-1/2 (38.1)or t 1/8 (3.2)
>2-4 (>50.8~101.6) 3 (76.2)or t 3/16 (4.8) Depth= 2%T or 0.04 (1.0) in. (mm)
>4-6(101.6~127) 5 (127)or t 1/4 (6.4) Whichever is greater. 说明：
>6-8 (127~203.8) 7 (77.8)or t 5/16 (8.0) Into the base metal. (a) 应是钻孔和铰孔，深度至少为3/2(38mm)，基本平行于探测面。
>8-10 (203.2~254) 9 (228.6) or t 3/8 (9.5) (b) 试块也可按ASME 第V卷，第4章附录J，图J-10制作。
>10 (>254) t±1 (t+25.4) Note (1) Length = 2(50.8)(min.) (c) 曲面：对曲面应有两个曲面校正试块，各自具有所代表的曲率；两组互成900的校正反射体。
(d) 切槽按需设定。
(e) 孔径容许公差±1/32(0.8mm),切槽深容许公差+10%、-20%，沿厚度方向孔位公差±1/8in.(3.2mm)。
注：厚度10in.(254mm以上)，厚度每增加2in(50.8mm)，孔径应增加1/16in.(1.6mm)
The basic calibration reflectors shall be used to establish a primary reference response of the equipment. The basic calibration reflectors may be located either in the component material or in a basic calibration block.
GENERATE NOTES:
(a) Holes shall be drilled and reamed minimum of 3/2in. deep, essentially parallel to the examination surface.
(b) alternatively, the block may be constructed as shown in ASME Code Section V, Article 4, Appendix J, Fig. J-10.
(c) Curved surfaces: for curved surfaces, two curved blocks, one for each representative curvature; or two sets of calibration reflectors oriented 90 deg. from each other shall be used.
(d) Notches may be provided as required.
(e) The tolerance for hole diameter shall be±1/32 in. The tolerance on notch depth shall be+10 and –20%. The tolerance on hole location through the thickness shall be±1/8in.
NOTE:
(1) For each increase in weld thickness of 2in (50.8mm)or fraction thereof over 10 in,(254mm), the hole diameter shall increase 1/16in.(1.6mm)
5.2 Basic Calibration Block Material
5.2.1 Block Selection. The material from which the block is fabricated shall be of the same product form, and material specification or equivalent P-Number grouping as one of the materials being examined. For calibration blocks for dissimilar metal welds, the material selection shall be based on the material
5.2 基本校正试块材料
5.2.1 试块材料选择
制作试块的材料应与被检材料中的一种具有相同的产品形式、材料规范或相当的P号组。探测异种金属焊缝时，所用校正试块应按进行探伤的焊缝一侧的材料。若探伤在焊缝两侧进行，则校正反射体应设在两种材料中。被检焊缝
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:6 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
on the side of the weld from which the examination will be conducted: if the examination will be conducted from both sides, calibration reflectors shall be provided in both materials. Where two or more base material thicknesses are involved, the calibration block thickness shall be determined by the average thickness of the weld. 涉及到两种以上的壁厚时，校正试块厚度应按焊缝平均厚度确定。
5.2.2 堆焊层
5.2.2 Clad .
当部件材料有堆焊层时，试块也应有堆层，其堆焊层规程应与产品零件一样。若不能采用自动焊方法，则应用手工焊方法堆焊。最好是采用切除的或延长部分未除去堆焊的部件材料。
Where the component material is clad, the block shall be clad by the same welding procedure as the production part. Where the automatic method is impractical, deposition of clad shall be by the manual method. It is desirable to have component materials which have been clad before the drop outs or prolongations are removed. 5.2.3 热处理
5.2.3 Heat Treatment. The calibration block shall receive at least the minimum tempering treatment required by the material specification for the type and grade, and also a postweld heat treatment of at least 2 hr, if the calibration block contains weld(s). 校正试块应按材料牌号要求，至少作最低程度的回火处理。若校正试块中含有焊缝，则还需作至少2小时的焊后热处理。
5.2.4 Surface Finish. The finish on the surfaces of the block shall be representative of the surface finishes on the component. 5.2.4 表面粗糙度
5.2.5 Block Quality. The calibration block material shall be completely examined with a straight beam search unit. Areas that contain an indication exceeding the remaining back reflection shall be excluded from the beam paths required to reach the various calibration reflectors. 试块表面粗糙度应代表工件表面粗糙度。
5.3 Calibration Reflectors 5.2.5 试块质量。 校正试块材料应使用直探头作全面检查。在声束到达多种校正反射体的声路中。不得有超过底波反射的信号存在。
5.3.1 Basic Calibration Reflectors 5.3 校正反射体
The calibration reflectors are specified in Fig.1 5.3.1 基本校正反射体
5.3.2 Welds in Materials with Diameters 20 in. (508mm) and less. 校正反射体按图1规定。
5.3.2 直径≤20in(508mm)的材料，基本试块应为曲面。除本规程另有说明外，一个单一曲面的基本校正试块，可用来校正表面曲率范围为0.9~1.5倍基本校正试块直径的检验。
The basic calibration block shall be curved for materials with diameters 20 in. (508mm)and less. Except where otherwise stated in this procedure a single curved basic calibration block may be used to calibrate the examination on surfaces in the range of curvature from 0.9 to 1.5 times the basic calibration block diameter 6. 系统校验
6.1 斜探头校验(横波)
6. SYSTEM CALIBRATION (GENERAL) 应作下列测定：
(a) 扫查范围校正
6.1 Angle Beam Calibration(Transversal wave) as applicable the calibration shall provide the following measurements: (b) 距离-波幅校正(DAC)
(a) sweep range calibration; (C) 位置校正
(b) distance-amplitude correction(DAC); (d) 基本校正试块中横孔回波幅度的测定。
(C) position calibration; 6.2 直探头校验
(d) echo amplitude measurement from the transverse drilled hole in the basic calibration block. 应作下列测定
6.2 Straight Beam Calibration
(a) 扫查范围校正：
The calibration shall provide the following measurements:
(a) sweep range calibration; (b) 距离-波幅校正(DAC)
(b) distance-amplitude correction(DAC). 6.3 校验确认
使用仪器前，应按被检厚度范围进行校准。
6.3 Calibration Confirmation
Calibration shall be performed prior to use of the system in the thickness range under examination.
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:7 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
6.3.1 Sweep Range Correction. 6.3.1 扫描范围校正
如果DAC曲线上某一点沿扫描线的偏移超过扫描分格读数10%或满刻度5%(取其中较大者)，则需修正扫描范围的校正，并在检验记录中注明这一数值。如果已将体记录在数据表中，则这些数据表要作废，并记录新的校正。从上一 有效的校正或校正核查以来所记录的全部信号，均需用经修正的校正重作检验，且数据表中的这些数值也要作修改。
If a point on the DAC curve has moved on the sweep line more than 10% of the sweep reading or 5% of full sweep, whichever is greater, correct the sweep range calibration and note the correction in the examination record. If reflectors are recorded on the data sheets, those data sheets shall be voided and a new calibration shall be recorded. All recorded indications since the last valid calibration or calibration check shall be reexamined with the corrected calibration and their values shall be changed on the data sheets. 6.3.2 DAC校正
6.3.2 DAC Correction 若DAC曲线上某一点其波幅减少20%或2dB ，则从上一次校正或校正核查以来的所有数据表均应标注取消。应进行新的校准和记录，并对数据所包括区域重作检验。若DAC曲线上任何点其波幅增加大于20%或2dB， 则从上一次有效校正或校正核查的所有记录信号，应重按修正的校准检验，其数值也应在数据表上更改。
7. 检验
7.1表面准备
If a point on the distance-amplitude correction (DAC)curve has decreased 20% or 2 dB of its amplitude, all date sheets since the last calibration or calibration check shall be marked void. An area covered by the voided data shall be reexamined. If any point of the distance amlitude correction (DAC) curve has increased more than 20% or 2 dB of its amplitude, all recorded indications since the last valid calibration or calibration check shall be reexamined with the corrected calibration and their values shall be changed on the data sheets. 7.1.1 母材
焊缝两侧母材应无焊接飞溅、表面不规则或妨碍探伤的其他杂物。
7. EXAMINATION 7.1.2 焊缝
若焊缝表面状态妨碍探伤，应作适当修磨。
7.1 Surface preparation 7.2 耦合
焊缝 UT用的耦合剂应与试块校验时用的相同。推荐用20#机油或甘油或化学浆糊(C.M.C)。
7.1.1 Base Metal 7.3扫查要求
7.3.1 斜探头扫查
The base metal on each side of the weld shall be free of weld spatter, surface irregularities, or foreign matter that might interfere with the examination. 7.3.1.1用斜射波探测平行于缝的反射体。
斜声束方向应大致与焊缝轴线成直角。如有可能，要从两个方向进行。要适当操作探头，使超声能量能经过所需检查的焊缝和邻近母材金属的体积。扫查中，应将增益调整到比基准灵敏度至少高一倍。应参照灵敏度基准作出评定。
7.1.2 Weld Metal
Where the weld surface interferes with the examination, the weld shall be prepared as needed to permit examination.
7.2 Couplant
The couplant used in UT examination should be as same as that
used in calibration. The No. 20 motor oil or glycerin or paste(C.M.C) shall be recommended to use.
7.3 Scanning Requirements
7.3.1 Angle Beam Scanning
7.3.1.1 Scanning for Reflectors Oriented Parallel to the Weld
The angle beam shall be directed at approximate right angles to the weld axis from two directions where possible. The search unit shall be manipulated so that the ultrasonic energy passes through 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.
7.3.1.2 Scanning for Reflectors Oriented Transverse to Weld
The angle beam shall be directed essentially parallel to the weld axis. The search unit shall be manipulated so that the angle beam passes through the required volumes of weld and adjacent base metal specified by the referencing Code Section. 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. The search unit shall be rotated 180 deg. and the examination repeated.
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:8 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
Thickness Ultrasonic Indicated Length 7.3.1.2 用斜射波对焊缝横向反射体作扫查。
壁厚t 超声指示长度 斜射波反射方向基本上与焊缝 方向平行。要适当操作探头，以使超声能量能通过ASME规范有关卷规定的焊缝和邻近母材金属的体积。扫查中，应将增益调整到比基准灵敏度高一倍。应参照灵敏度基准作出评定，应将探头转过1800，并重新检验。
in. mm in mm 7.4 直探头
<3/4 <19 1月4日 6 应对邻近的母材金属进行直射波扫查，以探测有可能影响斜射波检验结果辨认的反射体，但此不作为验收—拒收的检验。应对这些反射体的位置和区域作出记录。
3/4~9/4 19~57 1/3t 7.5 当规范有要求时，应在可能达到的范围内用直探头对焊缝和母材金属进行扫查。扫查中，应将增益调整到至少比基准灵敏度高一倍。应参照灵敏度基准作出评定。
>9/4 >57 3月4日 19 8. 评定
8.1 用DAC检验
用DAC曲线时，凡信号超过20%DAC的任何反射体均应对其定形、定性、定位 ，并按本规程第9条给出的验收标准作出评定。
7.4 Straight Beam 9. 验收判废标准
凡信号超过参考基准20%的缺陷均应定形、定性、定位，并按以下验收标准评定：
The scanning of the adjacent base metal shall be performed to detect reflectors that might affect interpretation of angle beam results, and is not to be used as acceptance-rejection examination. Locations and areas of such reflectors shall be recorded. (a) 定为裂纹、未熔合或未焊透的缺陷，无论长短，均不合格：
(b) 若信号超过参考基准波幅，且其长度超过下值的其他缺陷均不合格。
7.5 The weld and base metal shall be scanned, where required by the referencing Code Section to the extent possible with the straight beam search unit. The scanning shall be performed at a gain setting of at least two times the primary reference level. 其中 t为不包括许可余高的焊缝 厚度。若对接焊缝连接处壁厚不同，t取两种厚度较薄者。若全焊透焊缝 包括一填角焊缝，则填角腰高应包括在t中。
8. EVALUATION
8.1 Examination Using DAC 10. 记录和报告
10.1 检验记录
超声校准记录中应包括仪器校准记录。还应包括超声检验系统校准和校准试块编号。
For examination using a distance amplitude correction curve (DAC), any reflector which causes an indication in excess of 20% of DAC shall be investigated to the extent that it can be evaluated in terms of the acceptance rejection standards given in 9 of this procedure. 10.2 检验记录
每种超声检验应标出和记录下列内容：
9. ACCEPTANCE-REJECTION STANDARDS
All imperfections that produce an indication greater than 20% of the reference level shall be investigated to the extent that the operator can determine the shape, identity, and location of all such imperfections and evaluate them in terms of the acceptance standards given in (a) and (b) below.
(a) Imperfections characterized as cracks, lack of fusion, or
incomplete penetration are unacceptable regardless of length.
(b) Other imperfections are unacceptable if the indications exceed the reference level amplitude and have the lengths which exceed :
Where t is the thickness of the weld excluding any allowable reinforcement. For a butt weld having different thicknesses at the weld, t is the thinner of these two thicknesses. If a full penetration weld includes a fillet weld, the thickness of the throat of the fillet shall be included in t.
10. RECORDS AND REPORTS
10.1 Calibration Records
Instrument calibrations shall be included in the ultrasonic calibration records. Ultrasonic examination system calibration requirements and calibration block identity shall be included in the ultrasonic calibration records.
10.2 Examination Records
For each ultrasonic examination, the following information shall be identified and recorded:
NJBST Co.,Ltd. QCD-013 Rev.:0 Page:9 of 12
Title: ULTRASONIC EXAMINATION PROCEDURE
a. 检验规程；
(a) procedure b. 超声检验系统(设备)
c. 探伤人员资格、等级；
(b) ultrasonic examination system (equipment) d. 验证校验用表格；
e. 焊缝或扫查范围标志和位置；
(c) examination personnel identity and level if required by referencing Code Section f. 进行检验的表面；
g. 探到的缺陷及已探明区的示 图或记录；
(d) calibration sheet identity h. 检验日期和时间；
i. 耦合剂；
(e) identification and location of weld or volume scanned j. 基准校正试块识别标志；
k. 表面状况；
(f) surface from which examination is conducted l. 频率；
m. 专用设备
(g) map or record of indication detected or areas clear
10.3 评定记录
(h) date and time examinations were performed 对各种缺陷信号进行任何评定的记录，均应予保存和编成文件。
(i) couplant 10.4 检验报告
应作出UT报告。报告内容应包括：被检焊缝及草图、缺陷位置、探伤人员及资格。报告应经另一NDE人员Ⅱ级或Ⅲ级人员审核并由Ⅲ级批准后送交AI审查和验收。
(j) basic calibration block identification 10.5 所用UT记录、报告 和工艺卡表式见10-12 和附录1,2。
11. 后清理
(k) surface condition
(l) frequency
(m) special equipment 超声检验后，如有要求，应作后清理，将被检区表面涂布的耦合剂除干净。
10.3 Evaluation Record
Records of any evaluations of indication shall be maintained and documented.
10.4 REPORTS
A report of the examinations shall be made. The report shall include a record indicating the weld(s) or volume examined (this may be marked-up sketched), the location of each recorded reflector, and the identification of the operator who carried out each examination or part. The report shall be reviewed by another NDE Level Ⅱor LevelⅢ
and approved by NDE level Ⅲ Examiner prior to submitting to AI for review and acceptance.
10.5 The forms of UT record, report and specific instruction card see page 10-12 and Appendix 1,2.
11. Post-examination cleaning
After ultrasonic examination, the post cleaning shall be done for removing the couplant on the examined area, if it is required. |
|
|手机版|Archiver|热加工行业论坛
( 苏ICP备18061189号-1|豫公网安备 41142602000010号 )
发表于 2010-4-29 10:07:36
