ML20084S138
| ML20084S138 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 10/24/1979 |
| From: | Bair A, Walker D PULLMAN POWER PRODUCTS CORP. (FORMERLY PULLMAN, INC.) |
| To: | |
| Shared Package | |
| ML20084S137 | List: |
| References | |
| FOIA-84-203 IX-UT-1-W77, NUDOCS 8405240009 | |
| Download: ML20084S138 (15) | |
Text
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Ag Pullman E
Power Products Divmon of Pullman incorporated IX-UT-1-W77 3 DOCINENT NO.
i A. EAIR / R DATE: 7/17/7b PREFARED BY:. 1D.[F. GEHR APPROVED BY: -
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SEABROOK PROJECT PROCEDURE TO BE USED ONLY ON Jos #
j kb L# U PAGE NO. 1 0F 10 LATEST REY. DATE ULTRASONIC EXAMINATION
. OF - 10/24/79 WELDMENTS.
f-PREPARED BY PULIE.AN P0tlER PRODUCTS DIVISION OF FULL %N INCORPORATED HEADQUARTERS AT
~
CODE WILLIAMSPORT, PEKNSYLVANIA
) 01 DESCRIPTION REVISION PREPARED BY APPROVED BY INITIALS 7/17/78 D.F.Gehr A. Bair AB Initial Issue 01 Revised para. 2.6, 2.6.1, 2.6.2 D. Walker A. Bair Added new para. 13.0, 13.1, Renumbered old 10/24/79 _
para. 13.0, 13.1 e
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8405240009 840417 PDR FOIA PDR DOUGHTY 84-203'
Ep o,es,on Pullman Power Prociucts a un on inu po,ma IX-UT-1-1177 1
l gis DOCUMENT fio.
PREPAHT.C SY:_ D. FJ FHR. APPRoVFD BY: Jk P.A19 I_. DATE:_. 7/l7/78 _
~ SEABROOK To DE USED Ok PAGC 5
PROJECT PROCEDURE oNLY ON job # 7 d 11 NO. 2 0F 10 INDEX Title ' Paragraph Page
[
l' Title Page -- 1 Index .
-- 2 Scope 1.0 3 Equipment 2.0 3 Transducers .
2.4 4 Couplant 2.5 4 Examination Standardization 3.0 4 Calibration 4.0 5 Surface Preparation 5.0 5 f Weld Surface Preparation -
.. 6.0 6 Calibration of Equipment - Angle Beam Method 7.0- 6 Transfer Method 7.4 7 Examination Procedure - Angle Becm Method 8.0 7 Straight Beam Method 9.0 8
] Examination - Straight Beam Method
.10.0 11.0 8
9 Acceptance Standards - ASME Section III .
Examination of P.epairs 12.0 10 Report of Examination 13.0 10 Basic Calibration Block Appendix A 1 of 1 Typical Distance Amplitude Correction Curve Appendix B 1 of 1 (Angle Beam Method) '
Ultransonic Flaw Detection Record Appendix C 1 of 1 Typical Distance Amplitude Correction Curve Appendix D 1 of 1 l ,
(Straight Beam Method) ,
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l 4G. Pullman Power Products IX-UT 1-W77 T / Dwision of Putiman incorporated DoCLNENT NO.
r,ppRovEn. sY r. A na t o - . _ - AN_ DATE '7/17770 hPREPARED-BY2 D. F..._GEHR-To BE UsED PAGE 5 SEABROOK
- PRajECT PROCEDURE ONLY'oN job # No. 3 OF 10 l
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1.0 SCOPE ,
/
h/20/78 1.1 This procedure is written to compTy with the ultrasonic examination j
requirements of the following cbdes (hereafter called " Referenced l Codes"), and Addenda to those codes (hereafter called " Referenced Addenda").
ASME Section III ANSI B31.1 5/11/78 ASME Section V 1.2 It is required that the ultrasonic examiner have at his disposal and lI/20/78
' understand the contents of this document and the Referenced Ccdes.
1/20/78 1.3 Performance and evaluation of ultrasonic examinations shall be per-formed only by qualified personnel; certified by the Quality Assurance
- Department of Pullman Power Products in accordance with the requirements of ASNT No. SNT-TC-1A.
1.4 This procedure covers shear ' wave (angle-beam) or longitudinal (Straight beam) using contact technique with hand operated probes.
1.5 The pulse-echo method shall be used to meet the requirements of this procedure 1.6 The principal objective of the methods given herein is the detection, location and evaluation of discontinuities within the weld and heat affected zones. The welds shall be examined by the angle beam method where practical. In the examinations of weldments where geometry does not allcw angle beam examination from both sides of the weld from a '
single surface or a combination of surfaces, either a combination of e beam and straight beam or straight beam in two (2) directions at
- 7 . 20 o each other shall be used.
2.0 EQUIPMENT 2.1 Examination shall be conducted with an ultrasonic, pulsed reflection ~'
type system generating frequencies over the range of 1 MHz to 5 MHz '
unless otherwise specified by the referencing code section or material specification. -
~
. 2.2 When specifically required, the electironic apparatus shall contain a2dB, -
calibrated attenuator accurate over its range to ! 20 percent or g
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.y. Pullman Power Products IX-UT-1-W77 Omsion of Puitman incorporated DOCUMENT No.
3 hP REPAREo BY: D.F.GEHR APPROVED BY: A.BAIR M DATE: 7/1708 SEABROOK To BE UsED m PAGE 4 OF 10 ,
- oNLY ON job # No. l l PROJECT PROCEDURE l
2.0 Equipment (Continued) .
2.2 which will allow comparisorrof indications beyond the viewable portion of the cathode ray tube (CRT) prpsentation of the instrument.
2.3 The apparatus shall have horizontal linearity of plus or minus 5 per-cent over 80 percent of the sweep length presented on the CRT for the -
longest sound path to be utilized. .
2.4 Transducers 2.4.1 Shall be constructed from materials which will provide adequate penetration and resolution with minimum noise.
2.4.2 Nominal test frequency shall be 2.25~ MHz unless variables such as grain structure, thickness or geometry necessitate...
use of other frequencies to assure adequate penetration.
Minimum frequency.will be 1 MHz..
- 2.4.3 The transducer crystal shape may be square or round with a
- j. maximum size of 1 inch and a minimum size of 1/4 inch.
2.4.4 The beam angle shall be between 40 and 75 'the beam angle and exit point shall be determined prior to start of the test.
The exit poigt shall be marked on the transducer and the angle shall be + 2 of that stated in the examination report. It may'be necessary to prepare special wedges or shoes to. assure coverage. The beam angle will be calibrated by use of an IIW block prior to start of examination.
2.5 Couplant 2.5.1 Couplants used to assure transmission of signal between trans-ducer and test surface will be oil, glycerine or other approved material.
2.6 Equipment, Electronic Apparatus 10/24/79 2.6.1 Examination shal'1 be conducted with an ultrasonic, pulsed reflec-tion type system generating frequencies over the range of 1 to 5 MHz unless otherwise specified by the referencing Code Section or material specification.
10/24/79 - 2.6.2 When specifically required, the electronic apparatus shall contair -.
' a calibrated attenuator, accurate over its range to + 20% or + 2 dB which will allow comparison of indications beyond the viewable portion of the cathode ray tube (CRT) presentation of the instru-ment. i l
l
t JS Pullman F
Power Products Divsion of Pullman tricorpo<ated "
IX-UT-1-W77 DocUVE'hi No.
I j
APPRovEo BY: A_,BAIR D oATE: 7/17/78 f PREPARED BY: D.F.GEHR To et USED -g PAGE 'S OF 10 i SEABROOK oNLY ON job # No.
PROJECT PROCEDURE g,
3.0 EXAMINATI0h STANDARDIZATION 3.1 To assure complete coverage of the examined material,,each pass of the search unit shall overlap a minintm of 10% of the transdtner width.
' )
3.2 Therateofmanualscanningsb(l1notexceed6inchespc'second.
4.0 CALIBRATION s 4.1 Reference standards shall'be mnufactured to provide 'a means of establishing a D. A.C. (Distance Amplitude Correction) curve and evaluating discontinuities located in the weld zone and heat affected area.
l 4.2 Drilled holes shall serve as basic calibration reflectors to establish l
a primary reference response of the equipment and to construct a
- i. distance-amplitude corrective curve. These holes shall be located either in the finished component or in a basic calibration block or l similar metallurgical strt:ctbre, and the same or an equivalent P-Number grouping as the finished component. For the purpose of this paragraph, s
) P-Numbers 1, 3, 4 and 5 inaterials are considered equivalent. The
! reference block for pipe over 20" diameter may be' flat or essentially the same curvature as the pipe >to be examined.
s .
4.3 The thickness of basic calibration' blocks, if used, shall be related to the finished component thickness n showr in Appendix A. Where ,
two or more thicknesses are involved. the calibration block thickness shall be determined from the thickness o' the ' component where the search unit is . applied. .>
I 4.4 The basic calibration hole shown in Appendix A, Figure I shall be s drilled parallel to the contact surface of the basic calibration block or the component. The locaticn, depth and diameter of this s ' '
hole shall be obtained from the table in Appendix A. s 4.5 Other calibration reflectors may be used; provided equivalent responses to that from the basic' calibration hole are demonstrated.
\h.
5.0 SURFACE PREPARATION 4 5.1 The finished contact surfaces shall be free from roughness, weld spatter or any foreign matter that would interfere with free movement of the search unit or impair' the transmission of ultrasonic vibrations. _.
It shall be determined that the st.rface preparation will not affect the material tolerances. A 250 Rh5 or better surface is acceptable and a smooth, tightly adhering paint surface is g.ceptable.
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omsson of Pullman tri:orporated DoCUWNT Mo.
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enErxnEo ny:_ D. F . SEHR-- APPRnVED nY: A.BAID DATE:_7/17/78 SEABROOK To B*l UsED PAGE
= PROJECT PROCEDURE ONLY ON Jos M No. 6 0F 10
. 6.0 WELD SURFACE PREPARATION 6.1 The weld surface shall be prepared.s'o that the configuration lends itself to shear wave and longitudihal testing. The weld surface shall be finished so it cannot mask or be confused with reflections from discontinuities,and should merge smoothly into the surfaces of the adjacent base material. .
6.2 Where a pipe is welded to valves, fittings or other appurtenances or where the weld can only be approached from one side, it must be flush with the parent material from the approach side; so that full coverage by a V path is obtained.
6.3 Undercutting that will produce reflections which may be confused with j those caused by discontinuities, is not acceptable-,
7.0 CALIBRATION OF EQUIPMENT - Angle Beam Method 7.1 The proper functioning of the examination equipment shall be checked and the equipment calibrated on a frequency basis as follows:
7.1.1 At the beginning of each day of examination.
7.1.2 After testing 10 ft. of weld.
i 7.1.3 After two hours of an examination period.
7.1. 4 Any time the examiner suspects a change in test conditions.
- 7.1.5 Any change in examination personnel.
7.2 If recalibration reveals a chance in equipment conditions, all welds examined prior to the last acceptable c,alibration shall be re-examined.
- 7.3 Distance amplitude correction curves shall be constructed by -:..
utilizing responses frcm the basic calibration hole described iri' Para.,4.4 this procedure. The first point on the curve is obtained by placing the search unit as near as possible, but not less than 3/8 Vee path or 2 inches; whichever is less, frcm the calibration hole and positioning for maximum response. The gain control is then set so this response is 75 percent of full screen on the cathode ray tube (C.R.T.). This is the primary reference response. Without changing the gain, the search unit should be placed similarly at other positions covering the expected examination distance range, and the corresponding responses marked on the CRT" screen. These points are range.
examination joined by(a smooth line See Appendix whose B - figure 1.) length should cover the
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- . l 43 Pullman Power Products IX-UT-1-W77 '
l Dutsion of Puttman inceepo;ated ,
DOCUMENT No. 1 PRErARED BY:. 3._ F , _GWR t.PPRoVEo BY: A B A T R Ah_ oATE:_2/17/70
- To BE UsED PAGE SEABROOK No. 7 0F 10 PROJECT PROCEDURE ONLY ON JOB #
7.0 Calibration of Equipment - Angle.Peam Method (Continued) 7.4 Transfer Method [ .- .
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7.4.1 Transfer methods are used to correlate the responses from the basic calibration block and from the component. Transfer is accomplished by noting'the difference between responses received from the same reference reflector in tb.e basic calibration block and in the1 component and correctirg for the difference.
The reference reflectors may be V notches, -(which must sub-sequently be removed) an angle beam search unit acting as a reflector or any other reflector which will aid in accomplish-ing the transfer.' ' ,
7.4.2 The transfer method fok' vessels shall be used at least w,ce.
for each 10 ft. of .wei or less per plate and shall be per-fonned at least twir.e for each type of welded joint. ,
n ,
7.4.3 The transfer method for pipe shall be used. As i minimum,
] once for each welded joint for pipe sizes 10; inches in diameter and over, and once'for each 5 ft. of walded for pipe less than 10 inches in diameter. e > u.
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8.0 EXAMINATION PROCEDURE (Angle Beam Hjthod) 8.1 Where possible, butt welds shall be m mined from both ' sides of the c
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weld,usuallyfromonly.onesurface.f s l
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! 8.2 The reference' level sensitivity for tmanitoring is' the primary refer-e-amplitude curve -
I ence response corrected for distancchby the distan< bod'if used; Tihen or electronically, and modified by 'the transfer ~me t possible, scanning shall be performed at a,gdn' ~s etting olf(2 times (6dB) the reference level sensitivity. , ,,
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,,, . , em 8.3 The reference icvel for monitoring discontinuities is the, primary reference response, corrected for . distance by the dist'ance-a'mplitude curve or, electronically, modified'by the transfer method.
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( motion, the search unit shall be placed on the ' contact starface with the I
beam aimed at about 90 degrees to,the weldfand manipulated laterally and longitudinally so the ultransonid $can. passes through all of the -
weld metal in two different approaches of the. beam to the reflector. ~
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IX-UT-1-W77 Dmsion of Pullman in orp3 rated j coClP.'ENT NO.
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A *.o# DATE:. _7/17/78
- i PREP ARED nY:.__ n . p . . (: gyp __ APPnnVED BY: A T3fL M l
SEABROOK To sc esto PAGE oNLY ON job #e. No. 8 OF 10 PROJECT PROCEDURE (n 8.0 Examination Procedure (Angle Beam Method) (Continued) 8.5 In detection of discontinuities transverse to the weld, if the weld has been made sufficiently smooth l one search unit may be placed on
/ /
' the centerline of the weld with the beam directed along the weld to V scan the entire depth and width of the weld. ,.
9.0 STRAIGHT BE#i METHOD .
9.1 For calibration of equipment, the nominal frequency shall be 2.25 MHz unless variables such as production material grain structure require the use of other frequencies to assure adequate penetration.
9.2 A distance amplitude correction curve need not be constructed when the thickness of material is less than 1 inch. For greater tnicknesses, using the proper basic calibration block, (See Appendix A, Figure 1)
- and search unit shall be positioned for maximum response from the basic calibration hole at T, and the signal amplitude shall be adjusted to
(' 50 percent of full cathode ray tube screen. This is the primary refer-( ence response. Without cnanging the gain control, the search unit shall be then positioned for maximum response from the basic calibration hole at'3/4 T its amplitude marked on the CRT screen, and the two points - -
joined with a straight line extended to cover the test range.
9.3 The reference level for monitoring discontinuities is the primary reference response corrected F,;f a distance-amplitude curve or electronically.
- 10.0 EXAMIllATION PROCEDURE (Straight Beam Method) '
10.1 Scanning motion-- the weld shall be examined by moving the search unit progressively along and across a sufficient contact area so as to scan the entire weld.
l j 10.2 Sensitivity level--when possible,. scanning shall be performed at a minimum gain setting of twice (6dB) the primary reference level.
Evaluation of discontinuities shall be done with the gain control set
- at the reference level, q.
10.3 Monitoring.of procedures--penetration shall be verified by obtaining a reflection from an opposite parallel surface, or obtaini_ng the back reflection on similar material while using approximately the same L-- - length of sound travel.
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- IX-UT-1-W77 19 of Puttman incorporated DOCUMENT No.
V
..} APPROVED BY A.RAlp DATE: 7/l7/7R 5 PREPARED BY: D.F. GFHR
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- To DE USED PAGE 9 OF 10
. SEABROOK PROJECT PROCEDURE oNLY oN job # b,ff k $
q), NO.
10.0 Examination Procedure (Straight Beam Method) (Continued) 10.4 The volume of base material and weld through which the beam will travel in angle beam examinatibn shall be examined with a stiaight
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beam search unit. f-
/20/78 11.0 ACCEPTANCE STANDARDS - ASME SECTICN III WITH REFERENCED ADDENDA All indications which produce a response greater.than 20 percent of the reference level shall be investigated to the extent that the operator can determine the shape, identity and 1ccation of all such reflectors and evaluate them in terms of the acceptance-rejection st'andards as follows:
11.1 Discontinuities are unacceptable, if the amplitude exceeds the e
reference level, and discontinuities have lengths which exceed:
i 1) 1/4 inch for t up to 3/4 inch, inclusive
- 2) 1/3 t for t from 3/4 inch to 2 1/4 inch, inclusive;
- 3) 3/4 inch to t over 2 1/4. inch where t is the thickness of the weld being examined; if a weld joins two members having different thicknesses at the weld, t is the thinner of these two thicknesses.
11.2 Where discontinuities are interpreted to be cracks or incomplete penetration, they are unacceptable regardless of discontinuity or signal amplitude.
7/17/78 11.3 Only Level II and Level III personnel qualified in accordance with Procedure 11-2 (NDE Personnel Control & Administration of training, examination, qualification and certification) shall perform and interpret for acceptance / rejection.
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.qu Pullman Power Products IX-UT-1-W77 P Division of Puttman incorporated i
3 , DOCUMENT No.
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PREPARED BY: D.F.GEHR APPROVED BY: A.BAIR Nk DATE: 7/17/7R SEABROOK TO BE USED PAGE 10 0F 10 PROJECT PROCEDURE oNLY ON JOB Af $h' @
g f, Qqp@M NO.
12.0 EXAMINATION OF REPAIRS _
12.1 Repairs shall be re-examined bf the same procedures used for original detection of the discontinujtf.
0/24/79 13.0 POST EXAMINATION CLEANING ,
0 3/24/79 13.1 Following any nondestructive examination in which . examination materials are applied to the piece, the piece shall be thoroughly cleaned in accordance with applicable material or procedure specifications.
14,0 REPORT OF EXAMINATION 0/24/79
,0/24/79 34.1 The report shall include all procedures and equipment sufficiently identified to permit repetition of the examination at a later date.
i This includes initial calibration data for the equipment and any
- significant changes in' subsequent rechecks; and a marked-up drawing or sketch indicating the weld (s) examined and the item or piece number.
10/24/79 14.2 See Appendix C, Ultrasonic Test Report Form.
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.,. t s-eg Pullman Power Products Divis'on of Puttrron in orporated IX-UT-1-W77 g
1 DOCUVENT NO.
PREP ARED BY .--n t? c et% APPROVED BYt_ A . R A I R b DATE _7/17/78 a 1 SEABROOK PAGE
.'. TO BC USED 085 10e 1
, PROJECT PROCEDURE ONI.Y ON JOB- ~o.
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APPENDIX A ,
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. I MIN tsEE NOTE 5tl I' ,
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~~ LOCATION OF HOLE FRotA
. CONTACT SURFACE DEYERMINED FROM THE T/.SLE CELOW .
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. C CAWATI0N , ,
HOW SIDES PARALLE1. T WITlilH r. 0.0!5 IH./ FT
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- Lang1h of bicek determined by the sng *e uf search unit and the vesSeth used T* Thickne:s of bnic calibration block (see taole below)
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- Depth of side 4 rilled hote (see table belowl G8
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- Diefneter of sicedrilled hole (see table below) ,
- t " Nominal producticri material thickness -
Nominal Prodvetion 8: sic Calibra't en Here ~ Hole Minirnum Hofe Material Thickness (il in. stock Thickness IT). in. Location Diemeter (d). in. Depth (DI. in. q Up to 1inct '/. ort '/, T 'As l'/s l Ovst I thru 2 L'A ort 'A T '/s l'/s Over 2 thru 4 3 or a 'AT , . I'/s Over 4 thru 6 3 or t
'4 T '[/. I'/s I Over 6 thru 8 7e # '47 .e l'/s I Ova thru 1o p or a 'AT - *[A l'A. I l'4 I
Over 10 a
'/.T See Note 1 .
Note 1-For each increase in thick' ness of 2 in., or a fraction thereof. the hole diamete's shallincerase '/.. In. ,
Note 2-For block sites over 3 in. in thitkness IT). the distance frar.s the hole to the eisd of the block shall be MT esin.to yrcstnt coinci! cat scflections isorn the hnic and the corner in the '/. th vee-path position. Blocks fabricated with a 1%4a.salmanuma dimcamen need not be mndified if the cocact and hole indicatiorn can be sauty reiched.
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- l. 4',Py Pullman Power Products IX-UTL1-W77 y Omsion of Pullman incorporated
.)- DOCUMENT NO.
PPCPARED BY: n_ p_ ggyn APPROVED BY JL BA f D DATE . 7/17/78 l* .
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- I)
' SEABROOK To BE USED / PAGE
= PROJECT PROCEDURE oNLY ON JOB # ti *d NO. 1 0F 1 l
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FOR THICKNESS I INCH OR LES3
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CORRECTION CURVE (ANGLE BEAM METHOD)
(Distance in eighths of a vee path. Fo'r example, .
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Divmori of Puttman in:orporaled DOCUMENT NO:
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m PAGE SEABROOK TO DE USED $g -
RJ NO. 1 0F 1 ONLY ON JOB #
PROJECT PROCEDURE ~
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ULTRASONIC FLAU DETECTION RECORD _
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= .
APPENDIX C.*
' ' [* ;.
DATE JOB NO. ..
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"F" NO..
PIECE NO.
EXAMINATION PROCEDURE NO.
ACCEPTANCE CRITERIA EQUIPMENT HODEL NO.
__ SUOE TRANSDUCER: SIZE FREQUENCY CONTACT ANGLE MODE COUPLANT: .o .
DESCRIPTIOE OF STATIONARY O INSPECTION TECHNIQUE: MANUAL ROTATION U '
CALIBRATION DATA:
RECORD OF EXAMINATION RESULTS .
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F Dnnsion of Ptdtman incorporated DOCUMENT NO.
-)~h PREPARED BY:_I) . F .._G F MR . APPROVED BY: A . BAI R
_[$. DATE- 7/ /70 5 SEABROOK TO BE USED em' PAGE 1 0F 1
- PROJECT PROCEDURE ONLY ON JOB # h NO.
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