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ULTRASONIC INSPECTION
PROCEDURE
APPROVAL
Name Function Date Signature
Author Gary E. Kinter ASNT Level III UT 2-5-2013
Approved B
REVISION HISTORY
Revi!ion No" Revie#ed B Approved B Date Signature
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INDEX1.0 SCOPE
2.0 DESCRIPTION
3.0 APPLICATION DOCUMENT
4.0 PERSONNEL
5.0 EQUIPMENT
5.1 APPARATUS
5.2 SEARCH UNIT
5.3 COUPLANT
5.4 BASIC CALIBRATION BLOCKS
5.5 BASIC CALIBRATION HOLE
5.6 CALIBRATION
6.0 PROCESS
6.2 APPLICATION
6.3 ANGLE BEAM
6.4 EXAMINATION PROCEDURE (ANGLE BEAM)
6.5 STRAIGHT BEAM METHODS
6.6 EXAMINATION PROCEDURE
6. TESTING AND PIPE MATERIAL
.0 ACCEPTANCE STANDARD
!.0 ILLUSTRATION SCAN TECHNIQUE
A. REPORTS
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SUBJECT: ULTRASONIC EXAMINATION
1.0 SCOPE
1.1 This procedure covers the requirement for Ultrasonic examination of any welded
material of any size, shape, thickness or configuration capale of conductingsound as may e required y the client specification and y various codes under
which a component, or system is eing designed and manufactured.
1.! "#"$%& certifies that this document meets the minimum requirements of the
%'$" section (. %rticle (. and any other code or specification reference methods
of Ultrasonic examination as defined y %'$" section (. %rticles
!.0 DESCRIPTION
!.1 Ultrasonic examination of materials y the pulse)echo method uses
straight)eam longitudinal waves introduced y direct contact of the search unitwith the material eing examined. *t series of electrical pulses, is applied to a
piezoelectric element +transducer which converts these pulses to mechanicalenergy in the form of pulsed wave at a nominal frequency. The transducer is
mounted in a holder so it can transmit the wave into the material through a
suitale wear surface and couplant. The assemly of transducer, holder wear)face, and electrical connector comprise the search unit.
The Ultrasonic instrument amplifies the electrical signal from the transducer anddisplays the reflection and a &-T screen. The normal presentation on the &-T
screen is the % 'can/ with distance or metal travel read left to right on the
horizontal trace and the amplitude of the vertical signals represent magnitude of the reflect surface.
!.! o useful quantitative information can e otained with standard
Ultrasonic methods without first carefully calirating as to metal traveland reflector size vs vertical signal amplitudes.
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.0 APPLICABLE DOCUMENTS
.1 The following documents are made a part of this procedure to the extent specified.
American Societ o! Mec"anica# En$ineer %ASME&
'ection * 2ower 3oiler
'ection (*** 2ressure
American Nationa# Stan'ar' In(tit)te %ANSI&
31.1 2ower 2iping31. &hemical plat 4 2etroleum -efinery 2iping
American Societ !or Te(tin$ an' Materia# %ASTM&
" 156 'tandard $ethod for &ontact *nspection of 7elding
American Societ !or Non* De(tr)cti+e Te(tin$ %ASNT&
'T)T& 1% #T 2ersonnel 8ualification and certification
"#"$%& '"-(*&"'
8% "xaminer 2ersonnel 8ualification and &ertification
6.0 PERSONNEL
6.1 2ersonnel performing Ultrasonic examination to this procedure
shall e qualified and certified in accordance with 'T)T& 1% tale 1)c,
8% "xaminer personnel 8ualification and certification.
6.! 2ersonnel responsile for performing Ultrasonic "xamination to
this procedure shall e certified as level * +9perator :evel ** +*nspector
or :evel *** +*nspector "xaminer
6. 9nly certified :evel ** or level *** personnel shall make
determination as to the acceptaility of the Ultrasonic indication.
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;.0 E,UIPMENT
;.1 APPARATUS< %n Ultrasonic, pulsed, reflection type of instrument shall e used for this inspection the minimum frequency range of the system
shall e 1 to ; $'=. *t shall have calirated deciel control +accurate over
its useful range to >4)!0? or >4)!01 of the nominal attenuation ratiowhich allow measurement of signals eyond the linear range of the
instrument.
a. The Ultrasonic *nstrument shall provide a linear presentation +within >4);
percent for at least @;? of the screen height sweep)line to top of screen.
. &aliration Arequency< "quipment shall e calirated every six
months. &aliration records shall maintained at the Bo site wherethe equipment is eing utilized +see para ;.5.
;.! SEARCH UNIT
;.!.1 'traight eam transducers shall have to nominal frequency or !.!;
$C= unless variales such as grain structure material thickness etc.require the used of other frequencies
;.!.! %ngle eam transducer shall have a nominal frequency of !.!;
$C= unless varies such as grain structure, material thickness etc. require
the use of other frequencies.
;.!. The refracted angle of the sound eam in the production material
shall e etween 60) @; degree inclusive. Tale 1 lists the
recommendation.
;.!.6 Transducer shall e fitted with suitale shoes as required to
maintain adequate sound penetration transducers to maintain proper sound eam angle in the part.
;.!.; 'upplemental transducer shoes for curved surface shall have the
same nominal radius of curvature as the material examined.
;.!.5 Transducer shall e used at their rated frequency
;. COUPLANT
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;..1 % suitale couplant having good wetting characteristics such as
liquid detergent or paste and water shall e used. The same couplant shall
e used for caliration and examination. The sulfur and halogen contentof couplant shall not exceed 1? y weight.
;.6 BASIC CALIBRATION BLOC-S
;.6.1 #rilled hole shall e used as asic caliration reflector to estalish
a primary reference response of equipment and to construct adistance Damplitude correction curve. These holes shall e located either
in the production material or in a asic caliration lock or similar
metallurgical. 'tructure and the same or an equivalent. 2)numer
grouping as the production material. Aor the purpose of this procedure 2)numers 1, , 6 and ; material considered to e equivalent.
a. The thickness of asic caliration locks if used, shall e related to the
finished component thicknesses as shown in figure 1 where two morethicknesses are involved, the caliration lock thickness shall e
determined from the thickness of the component where the search unit isapplied.
. Aor examination of circumferential welds will contact surfacecurvatures greater than !0)in diameter, that asic caliration locks or
lock of essentially the same curvature as the part to e examined shall e
used
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c. The asic caliration lock contact surface shall e curved for
contact surface curvatures of less than !0)in diameter. % single curved
asic caliration may e used to calirate the examination on contact
surface in the range of 0.E to 1.; times the asic caliration lock diameter. Aor example an F)in diameter curved lock may e used to
calirate the examination on contact surface in the range of curvature
range from @.! to 1!)in diameters. The curvature range from 0.E6 to Dindiameter requires 5 lock curvature as indicated in figure 6.
d. The asic caliration lock for examination of longitudinal weldsshall e of essentially the same nominal diameter as the part to e
examined, except that for diameter greater than !0 inches, flat lock may
e used.
;.; BASIC CALIBRATION HOLE;.;.1 The asic caliration hole shown in figure shall e drilled
parallel to the contact surface of the asic caliration lock or thecomponent. The location depth and diameter of this hole shall e otained
from the tale in figure .
;.;.! Cowever other caliration reflectors may e used provided equivalent
response to that from the asic caliration hole are demonstrated.
-eference Aigure 1 and !.
;.5 CALIBRATION
;.5.1 &aliration of the proes for eam angle is required on the **7+*nternational *nstitute of 7elding test lock or other approved alternative+for example the (! lock at least daily caliration of the flaw detector
time ase and amplification shall e carried out efore examining each
weld.
5.0 PROCESS
5.1 SUR.ACE PREPARATION
5.1.1 &ontact surface the finished contact surface shall e free
from weld spatter and any roughness that would interfere with free
movement of the search unit or impair the transmission of Ultrasonic
(iration.
5.1.! 7eld surfaces<The weld surface shall e finished so it cannot mask or e
confused with reflection from defects and should merge smoothly into thesurface of the adBacent ase materials.
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5.1. 3ase $aterial< The volume of ase material through which the sound will
travel in angle eam examination shall e completely scanned with a
straight eam search unit to detect reflectors which might affectinterpretation of angle eam results. This is not intended as an acceptance
reflection examination.
5.! APPLICATION
5.!.1 The principal oBective of the method given herein is the detection,
location and evaluation of defects within the weld and heat affected zones.
The welds shall e examined y the angle eam method where practical.*n the examination of weldments where geometry or the condition
descried in 5.1. does not allow angle examination from oth sides of the
weld from single surface or a comination of surface, either a comination
of angle eam and straight eam or straight eam in two +! directions atE0 degrees to each other shall e used.
5. AN/LE BEAM METHODS
5..1 #istance) %mplitude &orrection<)&ompensation for the distance traversed
y the Ultrasonic eam as it passes through the material is provided y theused of the curves shown y figure ;. or electrically.
a. #etermination of &urves< #istance amplitude correction curves shall
e constructed y utilizing responses from the asic caliration descriedin ;.;. The first point on the curve is otained y placing the search unit
as near as possile, ut not less that 4F vee)path or !)in whichever is less
from the caliration hole and positioning for maximum response.
. The gain control is then set so this response is F0 percent of full screen on
the cathode ray tue +&-T This is the primary reference response.
c. 7ithout chaining the gain, the search unit shall e placed similarly at other
position covering the expected examination distance range, and the
corresponding response marked or the &-T screen.
d. These points are Boined y a smooth line whose length should cover the
examination range. 'ee figure ;.
5..! "lectronic #istance %mplitude &orrection< *f an electronic distance D
amplitude correction device us used primary reference response shall eequalized at ;0 percent of full &-T screen height over the distance range
to e employed in the examination.
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5.. Transfer $ethod< Transfer method is used to collate the responses from
the asic caliration lock and from the component. Transfer isaccomplished y noting the reference reflector in the asic caliration
lock and from component and correcting for the difference. The
reference reflector may e (/ notches +which must susequently eremoved, an angle eam search unit acting as a reflector, or any other
reflector which will aid in accomplishing the transfer.
% V*NOTCH TRANS.ER TECHNI,UE
G % (/ otch may e placed in the asic caliration lock. %s an
example, this notch may e 1)in long, have a depth of 1 percent of the lock thickness and have an included angle such that the side of the (/ D
otch are perpendicular to the incoming sound wave. %nother (/ notch
having the same dimension may e placed in or adBacent to the weld eam.
G The 'earch unit is positioned for maximum response from the notch in the
asic caliration lock and response reading is recorded. Then the searchunit is positioned for maximum response from the notch in the test
material to e examined and this response reading is also recorded.
G %fter determining the aove readings. *t is necessary to correct the
response otained from (/ notch in the test material to the response level
from the (/ Dnotch in the caliration lock y adding or sutractingattenuation +d
G The original distance amplitude correction curve can now e used for
signal amplitude reBection of flaws.
3 PITCH CATCH METHOD
7hen (/ Dnotches are not permitted in the test material, the pitch catchmethod may e used. *n this method, a second angle eam search unit is
used to receive the sound transmitted y the search unit which is to e
ultimately used in the examination.
G &onnect the second angle search unit to the receive connection of the
instrument and switch on the caliration lock and manipulate the two
search units until a maximum response is shown on the &-T mark thislevel on the &-T
G The transit and receive search units are then placed on the production
material so that the sound eam travels from the single transmit search
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unit through the material and into the receiver unit. *t is again necessary to
peak in the response and mark the level on the &-T.
%s with the (/)notch method, correct the response from the test material
y adding or sutracting attenuation +d. Aollowing disconnection of the
receive search unit and switching of the instrument ack to the pulse)echomethod, the distance)amplitude correction curve originally drawn on the
&-T screen is satisfactory for use as a signal amplitude reBection level.
& .RE,UENCY O. TRANS.ER METHOD USED
G (essels< The transfer method shall e used at least once for each 10 feet of weld or less per plate and shall e performed at least twice for each type of
welded Boint.
G 2iping<The transfer method shall e used as a minimum once for each
welded Boint for pipe size 10 inches in diameter and over, once for each ;feet of weld for pipe less than 10 inches in diameter.
5.6 EXAMINATION PROCEDURE %AN/LE BEAM&
5.6.1 &overage< 7here possile, utt welds shall e examined over 100? of the
area from oth side of the weld usually from only one surface.
5.6.! 'canning< 7hen possile, scanning shall e performed at a gainsetting of ! times or 5 d the reference level sensitivity.
a. To assure complete coverage of the examined material each pass of the search unit shall overlap a minimum of 10 ? of the transducer
width. The rate of manual scanning shall not exceed 5 inches per
seconds.
5.6. -eference :evel< The reference level sensitivity for evaluating
discontinuities is the primary reference response corrected for distance y
the distance amplitude curve or electronically, and modified y thetransfer method, if used.
5.6.6 DETECTION O. DISCONTINUITIES PARALLEL TO THE 0ELD
a. 'canning $ethod< The search unit shall e placed on the contact
surface with the eam aimed at aout E0 degrees to the weld and
manipulated laterally and longitudinally so the Ultrasonic eam passes through all of the eam to the reflector.
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. Two search units technique< Technique using two search units may
e used to detect lack of penetration in doule welded utt Boints.
5.6.; DETECTION O. DISCONTINUITIES TRANSVERSE TO THE
0ELD
*f the weld surface has een made sufficiently smooth, the search unit may e placed on the center line of the weld and the eam directed along the
weld to scan the entire depth and width of the weld. %s an alternate, two
search units may e placed on the contact surfaces adBacent to the weld,one on each side forming an angle of 6; degrees or less with the axis if the
weld.
5.; STRAI/HT BEAM METHODS
5.;.1 &aliration of equipmenta. #istance) %mplitude &orrection< % distance amplitude correction
curve need not e constructed when the thickness of material isless than 1 D inch. Aor thickness using the proper asic caliration
lock +see figure 1 and !, the search unit shall e positioned for
maximum response from the asic caliration hole at H T and thesignal amplitude shall e adBusted to ;0? of full &-T screen. This
is the primary reference response. 7ithout changing the gain
control, the search unit shall then e positioned for maximumresponse from asic caliration hole at 46 T, its amplitude marked
on the &-T screen and the two points Boined with a straight line
extended to cover the test range.
. "lectronic #istance)%mplitude &orrection #evice< The primary
reference response shall e equalized over the distance range to e
employed in the examination.
c. reference :evel< The reference level for monitoring discontinuities
is the primary reference response corrected y a distance)amplitude curve or electronically.
5.5 EXAMINATION PROCEDURE
5.5.1. 'canning $otion< The weld shall e examined y moving thesearch unit progressively along and across a sufficient contact area
so as to scan the entire weld
5.5.! 'ensitivity :evel< 7hen possile, scanning shall e performed at aminimum gain setting of twice +5 d the primary reference level.
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"valuation of discontinuities shall e done with the gain control set
at the reference level.
5.5. $onitoring of 2rocedures< 2enetration shall e verified y
+1 otaining a reflection from an opposite parallel
surface, or+! otaining the ack reflection o similar material
while using approximately the same length of sound travel.
5.5.6 To assure complete coverage of the examined material each pass of
the search unit shall overlap a minimum of 10? of the transducer
width. The rate of manual scanning shall not exceed 5)inches per
second.
5.5.; "valuating of *ndications< %ll indication which produce a
response greater than !0? of the reference level shall e
investigated to the extent that the operator can evaluate the shape,identity, and location of all such reflectors in terms of the
acceptance D reBection standards of the referencing cid section.
5.@ TESTIN/ AND PIPE MATERIAL
[email protected] Ultrasonic testing practice shall e in accordance with 3' ;EE5using technique ! +Alaw echo 4 ottom echo ratio for sizing the
lamination, or technique +multiple echo pattern, depending on
wall thickness and type of lamination +if any encountered. The
proe shall e scanned in a zigzag fashion in a zone 100mm widearound planned cut)outs for nozzles, and ack from the new end of
pipes which have een cut. :aminar defects shall not e accepted
if they exceed 5)mm in any dimension. %ny lamination not parallel to the pipe surface shall e deemed unacceptale.
@.0 ACCEPTANCE STANDARDS
@.1 %ll indications which produce a response greater than !0?
of the reference level shall e investigated to the extent that the
operator can determine the shape, identity, and location of all suchreflectors and evaluate them in terms of the acceptance reBection
standard as follows<
@.! #iscontinuities are unacceptale i f the amplitude exceeds the
reference level and discontinuities have lengths which exceed.
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a. H ) inch font up to I ) inch inclusive
. 14 Dinch font from I )inch to ! H ) inch inclusive
I) inch font over ! H ) inch
Note< 7here this the thickness of the weld eing examined, if a weld
Boins two memers having different thickness at the weld, this thethinner of these two thickness.
@. 7here discontinuities are interpreted to e cracks, lack of fusionand incomplete penetration, they are unacceptale regardless of length.
@.6 EXAMINATION O. REPAIRS:
@.6.1 -epairs shall e re)examined y the same procedure usedfor original detection of the discontinuity
@.; ACCEPTANCE STANDARD
@.;.1 #efects shall e identified primarily y accurate positioning of the source of the echo in the weld cross section, and
their approximate orientation determined y comparing the echoesreceived from each. 7hen the examination show indication of a
defect the following shall apply.
a. %ll reflection giving an indication in excess of !0? #%& shall e
investigated to the extend that they can e evaluated in terms of the
acceptance standard.
. %ll reflector giving an indication in excess of ;0? #%& shall einvestigation to the extend that they can e evaluated in term of
acceptance and recorded on the report.
c. %ll reflectors in excess of 100? #%& shall e cause for reBection.
@.;.! %ny weld, which as a result of ultrasonic examination, and which
in the opinion of the company exhiit imperfection greater than thelimits stated in %2*)1106, latest edition or as superseded in this
article shall e considered defective and shall e so e marked with
an identification paint marker.
*n addition to the %2*)1106 requirements, the welds containing,
cracks, including crater cracks regardless of size or location, shall e deemed unacceptale.
%rc urns or strikes shall e deemed unacceptale and shall for
sour service gas4 oil lines addition to the %2* 1106 requirements,the following shall apply
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a. %ny amount of inadequate penetration of the root ead as defined
y %2*)1106 shall e unacceptale.
. %ny amount of incomplete fusion etween the root and the level as
defined y %2* 1106 shall e unacceptale
c. Un)repaired urn)through area shall e unacceptale
F REPORTS
F.1 Ultrasonic examination *nspection -eport shall e filled outcompletely y qualified personnel and the report shall e signed y
the certified inspector.
F.! %ll recordale indications shall e shown on the technique sheet.
&opies of technique sheet +s shall e sumitted with each
inspection report
F. % test report shall e issued for each weld with all the relevant
data, including ut not limited to the following
a. -eport numer
. 7eld numer
c. *sometric 4 :ine umer
d. $aterial thickness
e. &ouplant
f. 2roes used, size and frequency
g. &aliration technique
h. 'urface condition
i. ame of 9perator
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B. %cceptance &ode
k. -eportale defects and disposition and sketch
l. #'J 2roe caliration &hart
B THIC-NESS CHEC- MEASUREMENT
SCOPE
The scope of work descrie in this page spelt out requirement necessary for the corrosion
monitory wall thickness examination of vessel, process lines and facilities.
,UALI.ICATION O. PERSONNEL
a1 ULTRASONIC INSPECTION
*nspector shall hold a current certificate of proficiency in ultrasonic issued y a national
recognized certification scheme for non) destructive testing +%'T shall e used for the
purpose of qualification of personnel. %lternatives qualifications shall only e deemedacceptale with the prior consent of the client and 4 or inspecting authority.
E,UIPMENT AND MATERIAL
a1 Ultrasonic flow detectors with a well define %) scan present
21 ULTRASONIC CALIBRATION BLOC-S
i **7 v41 caliration locks
ii **7 v4! caliration locks
iii *97 eam profile locks
c1 ULRASONIC PROBES
10mm to !;mm crystal diameter proes shall e used a frequency ! $C = to ; $C=. The
types of proe required depend on the thickness of the material eing examined.
TYPES O. PROBE
i %ngel proe
ii ormal proe
iii Transmit proe
PROBE SENSITIVITY
Com3re((ion 0a+e Pro2e 4 Lon$it)'e(
% minimum of 60d3 of gain shall e in reserve when the first ack wall echo from the
dimension of the II05I lock is set at 100? full screen height.
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ii& ("ea+e 6a+e 3ro2e 4 tran(+er(e
% $inimum of 60d3 of gain shall e in the 100mm quadrant on the II0 V5I
2#oc7 is set at 100? full screen height.
RESOLUTION O. PROBES
S"ea+e 0a+e Pro2e:
IO0 eam spread lock shall e used to assess resolution. This should e doneaccordance to the acceptance standard.
COMPRESION 0AVE PROBES
-esolution shall e assessed using the **7(4* caliration shall e considered acceptancewhen the three echoes at 100mm, E1mm and F;mm are clearly defined.
BEAM PRO.ILE
The eam spread of proes shall e estalished using the *07 lock and !0d3 drop
method and eam profile recording on the tracing paper or clear 2erspex.
OTHER E,UIPMENT &alirated -ule
Tape measure
7elding JaugeAlaw light location plotting oard
THIC-NESS SURVEY O. PIPIN/
*sometric drawing is usually employed in representing pipelines with particular referenceto welds, valves, pumps, flanges and cap ends. The position of each measurement point
clearly marked and referenced to the nearest up weld, value etc.
MEASUREMENT
a. (ertical piping work and pipe work inclined at 6;0 to horizontal<
Aour measurements shall e made around the circumference of the pipe located at plat) form orth and 'outh +or "ast and 7est and top and ottom of pipe.
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. Corizontal -eading< -equirement with pipe work inclined at 6;
0
horizontally, see sketches aove.
9ther methods of measurement include ultrasonic reading. The procedure for method
forms the asis for the data management system and is specific for the individuals piping items.
% grid scan at 100? can e carried out as suspect area of piping with evidence of
gross corrosion or significance loss wall thickness.
Nort"
0e(t So)t"
Ea(tNort" * 6e(t
To3
So)t"
Bottom
HORI8ONTAL
VERTICAL
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THIC-NESS SURVEY O. VESSELS
'ketches are always produced for any vessels to show the plan and elevation, nozzleswelds, flanges plate etc of vessels. The measurement positions are normally marked on
the vessel concerned efore reading are taken. *t is normally advisale to apply
permanent markers on the reset to show measurement position.
READIN/ PROCEDURE:
Nort" Ea(tO)t(i'e
So)t" 0e(t VERTICAL
O)t(i'eTo3
BottomHORI8ONTAL
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9ne measurement position on outside of end at mid point3end 1<5
1. $easurement position on outside of end equally spread.
!. $easurement position on each side of end at similar position as those on the out side
O)t(i'e
So)t" 0e(t
VERTICAL
In(i'e
HORI8ONTAL
OUTSIDE
BOTTOM
HORI8ONTAL
INSIDE
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$easurement 2osition *nside 9n 3end
Tee 2ieces
. $easurement position on head of TK1 in centre, 1 offset E00 each of centre/ -eading procedure #
Transfer straight pipe length
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STRAI/HT PIPE LEN/THS
10
E
F
@5
;
6
!
1VESSEL
MI 9
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ULTRASONIC VESSEL0ALL
THIC-NESS SURVEY
"quipment descriptionTag no LLLLLLLLLLLLLLL:ocation LLLLLLLLLL flow sheet no LLLLLLLLLLLLLLL
ominal thickness +mm
&orrosion %llowance +mm$inimum %cceptance thickness +mm
READIN/ PROCEDURE E
7eld root scan D pipe over F/ D carry out weld root scans with sheave 4 compression proes asappropriate expected is report minimum thickness for 1! quadrants
-eading 2rocedure
END CAP + -eading to e taken
+6 $easurement around the circumstance adBacent to the weld, 1 measurement at the end
cap
1
!
6;
5
@
F
E
10
11 1!
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ULTRASONIC INSPECTION REPORTPROJECT REPORT NO1
CLIENT RE,UEST NO1
LOCATION DATE O. TEST
CONTRACTOR ACC1 CRETERIA
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PROCEDURE NO1 MATERIAL
CALIBRATION BLOC- SUR.ACE CONDITION
0ELD TYPE E,UIPMENT TYPE
OTHER DETAILS SERIAL NO1
COUPLANT
PERSONNEL
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SENSITIVITY:
AN/EL PROBE SR1 NO1
M.R SONATEST
.RE,UENCY
MH8
PROBE
SI8E
PRIMARY
RE.1 LEVEL
TRANS.ER
CORRECTION
SCANNIN/
LEVEL
TOTAL
%'B&
COMMENTS:
EDEMAC SERVICES CLIENT
NAME:……………………………
DATE:…………………………….
SIGN:…………………………….
NAME:……………………….
DATE:………………………..
SIGN:…………………………
NAME:……………………
DATE:……………………..
SIGN:………………………
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8.0 ILLUSTRATION OF SCANNINGTECHNIQUES
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%. TYPICAL ;Y< %NODE& 0ELD
+% 00 compression proe scan on parent metal to check for laminations and to verify wall
thicknesses
+3 %ngle proe scan +minimum of proes) 6;0, 500, @00 from weld cap to full skip
distance plus weld cap width for coverage.
+& 00 compression proe scan to check for fusion defects +when accessile
9T"<'ound eam to e maintained perpendicular to the weld axis while scanning
BRANCH MEMBER
SCRIBE OR PUNCH MARK
BEFORE FIT-UPDETAIL “D”
DETAILS
“C” OR “D”DETAIL “B”
DETAILS
“A” OR “B”
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B TYPICAL ;Y< %NODE& 0ELD
+% 00 compression proe scan on parent metal to check for laminations and to verify wall
thicknesses
+3 %ngle proe scan +minimum of proes) 6;0, 500, @00 from weld cap to full skip
distance plus weld cap width for coverage.
+& 00 compression proe scan to check for fusion defects +when accessile
9T"<'ound eam to e maintained perpendicular to the weld axis while scanning
DETAIL “A”
DETAIL “B”
DETAIL “C”
DETAIL “D”
ALTERNATE DETAIL “D”
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&. SIN/LE ;V< BUTT 0ELD
+% 00 compression proe scan on parent metal to check for laminations and to verify wallthicknesses
+3 %ngle proe scan +minimum of proes) 6;0, 500, @00 from weld cap to full skipdistance plus weld cap width for full coverage.
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#. DOUBLE ;V< BUTT 0ELD
+% 00 compression proe scan on parent metal to check for laminations and to verify wallthicknesses
+3 %ngle proe scan +minimum of proes) 6;0
, 500
, @00
from weld cap to full skipdistance plus weld cap width for full coverage.
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". TYPICAL ;T< 0ELD
+% 00 compression proe scan on parent metal to check for laminations and to verify wallthicknesses
+3 %ngle proe scan +minimum of proes) 6;
0
, 50
0
, @0
0
from weld cap to full skipdistance plus weld cap width for full coverage.
+& 00 compression proe scan on face M/ to check for fusion defects +when accessile
+# %dditional angle proe scan +minimum of ! proes on face M/ when accessile