ML17285A197
| ML17285A197 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 12/14/1988 |
| From: | Powers C WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | |
| Shared Package | |
| ML17285A196 | List: |
| References | |
| NUDOCS 8901200349 | |
| Download: ML17285A197 (63) | |
Text
WASHINGTON PUBLIC POWER SUPPLY SYSTEM NUCLEAR PLANT NO.
2 FEEDWATER NOZZLE INSPECTION REPORT FOR REFUELING OUTAGE RF88A
- SPRING, 1988 Prepared by:
Reviewed by:
n sne
- anager, E ginee n
'S ms Support
- anager, WNP-2 Generation Eng~neersng v /
Dat Date z./z/aS Date Approved by:
- anager, P ant ech
>ca lant Manager Date Date tz iy/,
890ir 00349 BB}2~ 1 PDR ADOOK 05000/97 C
P1J<r
SUMMARY
This report addresses reactor vessel feedwater nozzle inspections for WNP-2 performed during the third refueling "outage (April 1988).
This report is required by NUREG-0619, Section 4.4.3.
Ultrasonic examination of one reactor feedwater nozzle was performed during the refueling outage.
No recordable indications were found.
The Plant had experienced 14 startup/shutdown cycles during this inspection period.
At the start of this period the low flow ("startup") valve was replaced by two valves.
This modification allows startup and low power operation feedwater
-control by these valves instead of varying reactor feed pump turbine speed.
This minimized feedwater nozzle thermal cycling during the period.
The Supply System plans to continue its augmented feedwater nozzle inspection at the next refueling outage as committed in the WNP-2 ISI Program Plan.
This commitment requires one feedwater nozzle bore, inner radius and safe-end to be ultrasonically examined from the reactor outside diameter (OD) at the next scheduled refueling outage (April, 1989).
NDE EXAMINATION During WNP-2 refueling outage
- RF88A, the Supply System performed ultrasonic examination of one reactor feedwater nozzle safe-end, bore and inner radius from the vessel 00.
This examination satisfies part of WNP-2's commitment described in FSAR Section 5.2.4. 10 and Inservice Inspection Program Plan Section 5.3.2 to ultrasonically examine one feedwater nozzle from the OD each refueling outage for the first six refueling outages.
The Supply System has developed an angle beam shear wave technique that is unique to the WNP-2 feedwater nozzle design.
The procedure was qualified on the WNP-2 feedwater nozzle mock-up which is a
feedwater nozzle from the scrapped Douglas Point: Unit 1 reactor vessel.
The inner radius, Zone 1, of the nozzle is scanned using a
72 degree angle transducer.
The inner radius, Zone 2,
and bore
- region, Zone 3,
are scanned using a
25'egree angle transducer The procedure, gCI 6-4, was revised prior to the examination to clarify the scanning technique.
The changes were verified on the feedwater nozzle mock-up.
The procedures
- used, gCI 6-4, Revision 4
and gCI 6-13, Revision 4, are contained in Appendix I to this report.
Calibration data for reactor feedwater nozzle inner radius examinations have been predetermined using the WNP-2 feedwater nozzle mock-up.
This allows the examiner to use the reactor vessel calibration block representing the shell course containing the feedwater nozzle for calibration.
The transfer data is contained in Table I of procedure gCI 6-4.
Indications that exceed 25% full screen neight (FSH) are recorded and indications that exceed 50K FSH are evaluated.
The examinations were performed by Supply System and Lambert MacGill Thomas examiners certified to either Level II or Level III UT.
No recordable indications were found.
The Supply System has
No recordable indications were found in either nozzle.
Total examiner radiation dose was less than 0.250 Man Rem.
LEAKAGE MONITORING
,.WNP-2 does not have on-line leakage monitoring for the RFW sparger.,
See FSAR section 5.2.4.10.
SYSTEM AND PROCEDURE CHANGES THAT AFFECT FEEDWATER FLOW During refueling outage RF87A, Spring,
- 1987, the low flow ("startup") valve, RFW-FCY-10, was replaced with two valves.
This change allows feedwater control at startup and low power to minimize thermal cycles on the feedwater nozzle without varying the reactor feed drive turbine speed.
The later method had been used since startup when it was discovered the original startup valve did not meet its required function (see reference 1).
/
This modification has performed successfully since installation to minimize thermal cycles on the feedwater nozzles.
This modification improved the feedwater control at startup and lower power.
STARTUP/SHUTDOWN CYCLES WNP-2 experienced fourteen (14) startup/shutdown cycles since the last feedwater nozzle inspection report (reference 2).
This brings the total cycles since initial heat up (April, 1984) to 70.
The data for outage RF88A was compiled from the 1987 Annual Operations Report and Monthly Core Energy Output worksheets.
NEXT SCHEDULED EXAMINATIONS The Supply System will perform an ultrasonic examination from the outside diameter (OD) of the reactor vessel on one reactor feedwater nozzle inner
- radius, bore and safe-end per the commitment in FS'AR Section 5.2.4.10 and the Inservice Inspection Program Plan Section 5.3.2 during the refueling outage scheduled for Spring 1989.
REFERENCES 1.
Feedwater Nozzle Inspection Report for Refueling Outage
- RF86A, issued November 25, 1986.
APPENDIX I Procedure gGI 6-4,'Revision 4
Procedure OGI 6-13, Revision 4
k00 QCI 6-4 wttwlwctow ~ $:tv I towtt 43 SI.IPPLY SYSTFVL RCV. IIO.
NDE R I INSTRUCTION ULTRASONIC EXAHINATION BHR NOZZLE INNER RADIUS crrccTIvc DATc, 4/26/88 QUAU ArrCCTI/tc QYC5 QkO 1.0 P
P AN This procedure defines the requirements for manual, pulse-echo ultrasonic examination of the BHR nozzle inner radius, (Zones 1, 2, and 3),
ASHE Section XI, Category B-O.
Scann1ng.by this procedure is done from the reactor vessel 0.0. wall and nozzle surfaces using refracted shear wave search un1ts.
Figure 1 illustrates the Zones which can 'be effecti'vely scanned from the outside surfaces of the vessel plate and nozzle.
1.2 This procedure covers the angle beam shear wave technique that is unique to the nozzle design.
Specific refraction angles have been determined by indiv1dual nozzle geometry as deptcted in Figures 2,
3 and 4.
1.3 This instruction is 1ntended to meet the requirements of Sections V
and XI of the ASHE Bo1ler and Pressure Vessel Code (1980 wtth Addenda tbrough Hinter 1980).
2.0 1.4 BHR Calibration Oata listed in Table I have been predetermined from the Supply System's feedwater nozzle mockup so the qualified exam-iner need only use the vessel calibration block representing the shell course containing the nozzle.
None.
3 '
3.1 P
3.1.1 Personnel performing examtnat1ons to the requirements of this 1nstruct1on shall be a cert1fied to at least Level II, 1n ultrasonics in accordance w1th the requirements of Refer-ence 6.2 and (b) below.
Supply System personnel shall be (a) certified to at least Level II in accordance with Reference 6.3 and (b) qualif1ed us1ng the Supply System BHR feedwater nozzle mockup and this ultrasonic examtnat1on procedure.
WRITTCk SY<<~ I CMCCKCD IY/DA IIAv II/DATc 5 7 ~/~
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OCI 6-4 Rev.
4 3.1.2 Personnel not specifically qualified on the BWR feedw'ater noz le mock-up, but designated as'rainee, Level I, II or III UT may assist a qualified examiner in performance of examinations to this instruction.
3.1.3 At least one person responsible for reviewing the results of the ultrasonic examination shall be a Supply System -person certified as an ultrasonic Level III in accordance with
~ Reference 6.3 in addition to meeting the requirements of <b) above.
3-2 Badld Clammy The thermal insulation should be clear of the nozzle'nd vessel to create a free space 12.inches out from the nozzle cylinder outer surface.
3-3 Eedummi 3.3.1 3.3.2 The. pulse-echo,'ltrasonic, flaw detection instrument shall
.be equipped with a fine gain or attenuation control graduated in units no larger than 2 dB.
Instruments con-sidered acceptable for this examination are listed below; however, other instruments may be used if the model type has been qualified.
Krautkramer USIP-11, USL-48, USD-10 Nortec NDT 131 or 131D, 132D Single element ceramic transducers, having an area of.44 to 1.0 square inch, with a nominal frequency of 2.25 HH shall be used with specific wedges, Figure 5.
The refracted angle within the material shall be within the limits shown in Table I.
Additionally, data may be taken with other sizes, frequencies, and angles, after completing the examination to the above requirements.
3.3.3 Ultragel II or its equivalent shall be used as the liquid couplant.
3.3.4 The vessel calibration standard listed in Table I shall be used.
This standard corresponds to the shell thickness containing the subject nozzle.
3.3.5 3.3.6 IIH-2 POHPAS or modified Type DC (square
'ended semicircle) s~eep calibration reference blocks.
Flashlight for reading instrument control knobs.
Page 2 of 21.
OCI 6-4 Rev.
4 3 '
Pr 3.5 The contact surface shall be clean and free of dirt, dust, weld
- spatter, loose pa1nt, or other material which would interfere with,.
free movement of the transducer or impair transmission of ultra-sonic energy into the materi'al.
3.6 The scanning speed shall not exceed 3 1nches per'econd.
Prior to the examinat1on, the nozzles shall be marked and identi-fied in accordance with a nozzle marking plan as illustrated in F1gure 6.
Sanford's "Sharpie" black tip marker's the accepted pen dev1ce.
3.7 l
1 n
f Calibration shall 1nclude the complete ultrasonic examination system.
Any change 1n couplants,
- cables, or ul trasonic 1nstruments shall be cause for recalibration.
Sweep calibrations may be made with a standard angle beam wedge using the-. IIW or similar curved
- block, and must be representat1ve of the metal path expected for the zone to be examined, reference Table I.
3.7.1 Instrument Calibration - Prior to the in1tiation of scheduled examinations, the ultrasonic instrument shall be checked for amplitude control linearity per paragraphs 3.7.2 and 3.7.3, respect1vely.
3.7.2 Amplitude Linear1ty Check - An angle beam search unit shall be pos1tioned on a calibrat1on block and signals obtained from two reflectors.
The search unit position shall be adjusted to g1ve a 2:1 ratio of ampl1tudes between the two reflectors'he gain control (sensitivity) shall be adjusted and the larger s1gnal brought to 80'l of full screen height (FSH), adjusting posit1on 1f necessary to maintain the 2:l signal rat1o.
Without mov1ng the search unit, adjust the gain control to successively set the larger signal from lOOX to 2(C FSH in 1(C increments or 2 dB steps.
The smaller amplitude must be 501. of the larger amplitude within 5X of FSH.
Instruments that do not meet these requirements shall not be used.
3.7.3 Amplitude Control Linearity Check - The angle beam search unit shall be positioned on a calibration block and a peaked signal amplitude obtained from a hole or notch.
The indi-cat1on shall be brought as near as possible to 80%
FSH with Page 3 of 21
OCI 6-4 Rev.
4 C
the dB control.,If necessary, the final adjustment to 80X FSH -is made with the variable gain control or dB switch.
Using only the dB control,:the dB changes 1ndicated below shall. be made and the resulting amplitude compared with the allowable amplitude limits as spec1fied below.
Instruments that do not meet these limits shall not be used.
The proce-dure shall be repeated for 40X and 20X FSH amplitudes.
4 l
Set of X FSH Change (X FSH) 80 80 40 20
-l2
+ 6
+12 32 to 48 16 to 24 64 to 96 64 to 96 3.7.4 Recal1bration (Sweep Only) - If the indication from the cali-bration reflector has moved on the sweep line more than one inch of metal path, correct the sweep range calibration and note the correction on the calibration data sheet. If record-able reflectors are noted on the examinat1on data
- sheets, those data sheets shall be voided.
A new calibration shall be made and recorded, and the voided examination areas shall be re-examined.
3.7.5 Recalibration (Amplitude Only) - If the amplitude of the calibration notch has changed by more than 10X FSH when a
check is made on the reference block, all data sheets since the last positive calibration check shall be marked void.
A new calibrat1on shall be recorded and the voi'ded examination areas re-examined.
The voided sheets may be discarded.
Calibration shall be performed at the beginning of each series of exam1nations.
A calibrat1on verification shall be made at intervals not exceed1ng four hours dur1ng the exam1nations.
CkLB~
An initial instrument sweep ca11brat1on shall be made for shear wave velocity by using the exam1nation search unit with a conventional angle beam shear wave wedge and the IIH, Rompas or modified OC type curved calibrat1on block.
Sweep calibration data is listed in Page 4 of 21
OCI 6-4 Rev.
4 Table I for each nozzle.
The oscilloscope's screen shall read directly in inches of metal path and the data entered on the cali-bration data sheet; Figure 7.
4.1.1 Zone l Using a Rompas block, direct the ultrasonic beam
'oward the large radius, with the exit point of the trans-ducer at the radius center mark on the block, max1mize the CRT s1gnals by moving the transducer forward and back.
Ad)ust the "Range" and "Delay" controls until the first reflection signal is at "2" on the horizontal graticule line on the CRT and the follow1ng signals appear at "5" and "8".
Lock the range control knob and delay the signal at "8" to zero posit1on.
S1gnals should now appear at zero, 3,
6 and 9.
Next, delay the signal at 6 to zero.
Signals should again appear at zero, 3,
6 and 9. If they do not, make minor ad)ustments so they do.
The CRT 1s now calibrated for.l4 to 24 'inches of metal path.
4.1.2 Zone 2 - Using the transducer with the convex 25 shear
- wedge, obta1n peaked signals from the 1/2 to 3/4 "T" holes in calibration block No.
120.
Ad)ust the range and sweep to obtain reflection signals at pos1tions 3.5 and 5.4.
Delay the s'ignal at 5.4 to the 0.4 posit1on.
The CRT is now cal1brated for 5 to 15 inches of metal path.
4.1.3
. Zone 3 - Using the transducer with the flat 25'hear
- wedge, cal1brate as in 4.1.2.
4.2 bp~li~d~a3 i~r~in.
Basic calibration shall be establ 1 shed wi th sufficient gain so that 2X scanning can be performed w1thout chang-ing. the variable ga1n control.
To determine the bas1c sensitivity level of lX, the search unit shall be held on the applicable vessel cal1bration
- standard, with the echo amplitude from. the s1de drilled hole at 3/4 T maximized.
The gain controls shall now be ad)usted so that the echo amplitude is brought to 5(C FSH.
This shall be the primary reference level.
~TJg5:
Care must be exercised during calibration to assure the shear wave component is used for calibration s1nce there is also a
strong longitudinal wave component generated by the angle beam transducer, especially for Zone 2 and 3 cal1bration.
A peaked shear wave signal from the 3/4 T hole should appear at approximately 5.7 inches metal path when the transducer is approx1mately 2-3/8 inches surface distance from a line normal to the hole centerline.
The refracted long1tudinal wave should produce a peaked signal at approx-1mately 4-3/4 inch metal path at a surface distance of 6-l/2 inches.
Page 5 of 21
OCI 6-4 Rev.
4 4.3 A Level II or III UT examiner shall view the CRT display during the examination.
A record of each nozzle inner rad1us exam1nation shall be made on examination data sheets (Figure 8),, which shall be num-bered in sequence with calibration data sheets.
Scanning shall be performed at 2X above the primary gain level (lX).
Measurement and recording of ultrasonic 1ndications shall be done at the lX level.
ZQJE - l The-inner rad1us Zone 1 shall be scanned in two directions from the vessel plate as shown in Figure 9.
Scann1ng shall progress circum-ferentially around the nozzle using the moving azimuth. technique.
The operator shall occasionally rotate the wedge toward the bore axis to obtain a direct reflection signal from the 1nner radius as a
check to confirm penetration.
For the primary technique, Zone l scan boundaries extend from the end of the blend radius to a distance 9.0 1nches out on the shell wall.
A secondary techn1que may be used in addit1on to the moving azimuth technique, the scan-n1ng shall folio~ a continuous line around the nozzle using a fixed azimuth.
A minimum of three scans shall be made as shown 1n Figure, 9 (0.5 in. overlap).
The movable pointer-on the transducer wedge shall be positioned in the groov'e marked "CCH" for scann1ng counter clockwise and "CH"'for. scanning clockwise.
Tbe 'pointer shall be aimed at the nozzle bore ax1s during scanning to the extent prac-t1cable.
The examiner shall reference Figure 10 for transducer orientation.
~n~
The 1nner surface of the nozzle shall be scanned from the exterior surface of the nozzle using the appropriate search units 1n two directions:
clockwise (CW) and counterclockwise (CCH) (Figure ll).
A circumferential scanning pattern spaced at intervals not exceeding 0.25 1n. (3/4 in. overlap) shall be followed around the nozzle body to obtain full coverage of the inner surface Zone 2.
The nozzle forging and the inside bore shall be examined to the maximum extent possible using the cylindrical surface'for scanning (Figure 12).
The scan path of the search unit shall overlap the ad)acent scan by' minimum of 0.50.1nch.
The search unit shall be scanned circumferentially around the nozzle forging so the angle beam shear'wave covers al.l 360'f the c1rcumference in both the clockwise and counterclockwise directions.
Page 6 of 2l
OCI 6-4 Rev.
4 4.4 Indications in the region of the blend radius, which have an ampli-tude greater than 50K FSH at the 2X scanning level and which travel 1n t1me position on the CRT shall be invest1gated to determine maximum ampl1tude.
Indications in the region of the blend radtus which exceed 25'L FSH at the primary reference level (lX) and which travel in time posi-tion on the CRT, shall be recorded on the examinat1on data sheet.
Report signal ampl1tude 1n 'L FSH, metal path in 1nches, search unit direction as clockwise (CH) or counterclockwise (CCH), and search unit position.
4.5 f
P f'eference points for physical measurement of azimuth shall be 1n accordance with the nozzle reference plan shown in Figures 10, ll, and 12.
4.6.
QpT QQJQLY~~QR Photos of the CRT display shall be taken at the option of the Level III Examiner to further document the ultrasonic signal character.
Pertinent data shown below shall be recorded on the back of each
=
photo.
l.2.
3.',
5.
Report No.
ISI Drawing No.
Zone No.
Sweep Distance Indication No.
- 5. 0 QATi~PQQ~~N 5.1 5.2 The recorded data shall be reviewed by a level III Examiner to determine if additional examinat1on and/or interpretation 1s required.
Recorded indications shall be plotted on a scale no less than quarter size and reviewed by the Level III Examiner.
- 6. 0 ~Rf~
- 6. l American Society of Hechanical Engineers Boiler and Pressure Vessel
- Code, 1977 Edition through Summer 1978 Addenda.
6.l.l Section XI - "Rules for Inservice Inspection of Nuclear Power Plant Components".
Page 7 of 2l
OCI 6-4 Rev.
4 6.1.2 Section V - Nondestructive Examination".
6.2 American Society for Nondestructive
- Testing, June 1975 Edition.
Recceeended Practice SNT-TC-1A "Nondestructive Testing Personnel Qual 1f1 cation and Certif1 cation".'.3 The Supply System "Program Hanual for Qualification and Certificat-ionn of Examination, Testing and Inspection Personnel HHC-034".
6.4 Nozz)e forging drawings - Genera1 Eiectrfc!CBI Nuc1ear Page 8 of 21
OCI 4 Rev.
4 TABLE I ULTRASONIC CALIBRATION DATA FOR
'XAHINATION OR BHR=NOZZLE INNER RADII NOZZLE TYPE - N4 FEEDHATER ACOUSTIC ANGLES DEGREESl A
8 C
CRT DISPLAYED SHEEP CAL STANDARD
¹ Zone 1
22 70 70 14" to 24" UT 1202 Zone 2
22 253 63-70 5" to 15" UT 120 TRANSFER SENSITIVITY dB GAIN INCREASE 0
12 Zone 3
0-10 25 63 5" to 15" UT 120 12 1.
See Figures 2A, 28, 3 and 4
2.
The 5/16 in. dia., 3/4 T hole (5.06 in below the contact sur-face) shall be used for calibration.
3.
4.
Convex shoe Gain setting for 50>>
FSH indication is 6 dB less for RFH nozzle mock-up notch (Notch A) than for 3/4 T-hole of cali-
.bration standard UT-120.
Therefore, as a conservative
- measure, the 3/4 T-hole gain setting has been accepted as the primary gain level.
Page 9 of 21
OCI 6-4 Rev.
4
'r L
HO~~a, ~IiQiiON c.ONES Paae 10 of 2l FIGURE 1
OCI 6-4 ReV.
4-Vessel Plate Scan Ndth Scan Start Oimension 2A.
ttOMIttAL EHTRY POINT FOR SOUND BEAt<'OR ZONE 1
Ul-rasonic Search Unit Assembly with Compound Angle aq sap
~ W
/
A ~ Skew Angle (offset)
B
- Refracted Angle C
~ Interce,t Angle C
2B.
SOUtt0 BEAN GKOHEiRY IH NOZZLE FOR ZONE l F.GURES 2A and 25 Paae
)l of 2!
OCI 6-4
'ev.
4 SCAl( AREA SECTIONAL '/IEM OF tlOZZ1.E BOOY FIGVR 3
SOUEID BEAM GEOMETRY'.
ZONE 2 FIGURE 4 SOVHO BEAM GEOMETRY, ZOtlE 3 SETIQHAL iIPA OF flOZZL CYLIi'10ER FIGURES 3 and 4
Paae 12 of 21
OCI 6-4 Rev.
4 E VIE'A EHD 'llBL'
/
ZONE 1, FLAT CONTACT SURFACE
//.
ZONE 2, CONVEX CONTACT SQRFACE
///
ZONE 3, CONCAVE CONTACT SuRFACE FIGURE 5
TRANSDUCER HEDGE CONFIGURATIONS Paae 13 o= Zl
OCI 6-4 Rey.
4 NOZZLE tlUMSER LOCATED ON TAPER LltlES MARKEO Otl NOZZLE BODY 300 315'30 345'.
~
15 RAOlAL LlttES EXTENO 2"
PAST REF.
CIRCLE 30'ONE, 1
CIRCLE 45 60 I
285 75 270 90 255 105 240 X OlS
.>CIRCUMFEREtlCE 24 210 195 180 (BO OM) 150 135 120 FIGURE 6
NOZZLE MARKING PLAN Paae 14 of 21
OCI 6-4 Rev.
4 ULTRASONICCALIBRATIONSHEET tROIECTI EXAMINERI EXAMINERI SYSTEMI LtVELI LfVtLI 4 Su%Pm SVSTEM SKftT No<<'KERMOMETER SINI CABLETYtf SERIAL NUMSER TEMtf hATU RE CKAhThfCOROth TVStl SIN TIlit
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ACfUALANOI.'E SCRE tN KEIOKTLNIEARlfY SOR CONTINUOUS CAINCONTROL IHSTRUMfNTCALISRA'fION thtVIOUSLYtth SORMto ON CALISRATIONSKttT NUMBER SCREEN NEIOKTLINEARITY
~Oh~ STES OAUICONTROL AMtLITUof CONTROL LINEARITY IO IOO SO OO fO OO OO 40 eh
+2 0
2 A A A ii10 12 IO MCKAN4E REAOINo %
12
+12 LCAL'IMEI LOSS 10 LIMITS'%2 Jl
" 'IO 2O OX N OliN SYSTEM CALIBRATION SIN LTIMEI INSTRfPC ENT SETTINOS COARSE RANCE COARSE O'SLAY RANCE CALIS SLAVCALIB SREOUENCY CAIN IN OO OAANNO RCJECT S ILTth RESLECTORS IS NOOE IS NOOE ISHOOS IS NOoa IS Hoot IS NOOE IS NOOE RR
~5 StARCK V NIT 0 R I5 NT ATION AMSLITUOE SWEES REAOINQ RSSK IN INCKES AXIAI IX SCRtfN OACthfSfNTATIOH IftLOS OR SARTS EXAINNto 0
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SSCDtlDAIIY LsDvtrsC kgllsMTst SCArs TXC)errtDVS Phlla&hY Zone 1 RKerence Zone 1 AKerence Circe can Path 1
can Path 2 Path 3 Scan Path 1
Scan Path 2 Scan Paths For Fixed Aasnuth Technique Scan Paths For Mcnnng A&nuth Technique FIGURE 9
SCANNING MOTIONS FOR THE ZONE 1
EXAMIN ION Paae 17 of 21
OCI 6-4 Rev.
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g 55 j.QNS I ASIISASNCC CIACI.S 4'~s 50 ASRSRStICS CIRC S
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JV IQI.U545RSLI(NYS S'HAl I SS <IICM RSRSAS'ICS CIRC+) RAQI*lI,Y CUhVRRQ, JSIMUTH I*I 15 FIGURE 10 MEASUREMENT CRITERIA FOR RECORDING UT Paae 18 of 21
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FIGURE 11 REQUIRED SCAN PATHS AND HEASVRB1ENT CRITERIA FOR 2ONE 2
EXAHINTIONS
C'hC'JMveneHrlkl. 5~ 044tt gg sa*0e Ile T'rQ OlhggflQllg ahOUNO'cite CYQHChlCAI QCTlCN an ~m~ noae>ea sad asUhc "0 cl5fAHcxs >hoaa enc>h rewr 0~ soz aghCltlC ae a Hefk CONICAL AHO CYLIHOhlCktSX&oCt4 inc QRc vs sin Md'~~
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lines are aacn 15o around t~e noa le.
All Ax esaaurenenci are hade ln a councefwlocev15e d'Iree'eton froh cease lines so anv Index ears on ane sear e
Ylev cade looaanq ~rd t,e vessel
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FIGURE 12.
20NE 3
SCANNING AND LOCATION REQUIREMENTS
OCr 6-4 Rev.
4 345 l5 n
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285 220 255 IO5 I35 2IO Irn I95 Inn I'Iot of IndfcitIon(s) for nnzxlo Ito. I Report Oo.t FIGURE
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4S SUPPLY'SYSTEM NDE 8 I INSTRUCTION QCI 6-13 4
FKCTiVC DATC 4-10-87 ULTRASONIC EXAMINATION OF PIPING MELGS (HANUAL).
1.0 PURPOSE AND SCOPE 4
'.l This instruction defines the method for manual contact ultrasonic examination of similar and dissimilar metal welds in piping systems 0.2 to 6.0 inches in thickness.
The methods outlined in this instruction meet the requirements of the ASNE Boiler and Pressure Vessel
- Code,Section XI, 1980 Edition through Minter 1980 Addenda and Appendix III.
1.2 These examinations may be performed by Supply System personnel or by a Supply System Contractor under Supply System supervision.
- 2. 0 OEF INITIONS None 3.0 PROCEDURE 3.1 Personnel Qual itfications 3.1.1 3.1.2 3.1.3 Supply System personnel shall be certified in accordance with Reference 6.2.
Contractor personnel shall be certified to the contractor's Qual'Ity Assurance Program provided the program has been approved by the Supply System.
As an alternative, the contractor personnel shall be certified in accordance with Reference 6.2.
Personnel designated as trainees may assist the Level II or III in performance of the examinations to this instruction.
3.1.4 Level I individuals shall perform only specific setups, calibrations, tests or record data to the requiremerts of this instruction and shall implement this instruction only with the direct participation of a Level II or higher individual.
The Level I shall not independently evaluate
'or accept the results of the examinations performed to this instruction.
3.1. 5 Examination teams shall include at least one Level l3 or Level III UT examiner.
WItl Y
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~ K SUtCRSCDCS ISSUCy./.';
Rev.
3 W~OZ R+
or
()CI 6-13 Rev.
4 1
3.2 Ultrasonic Instruments - The pulse-echo, ultrasonic flaw detection nstruments sha be equipped with a stepped gain control, gradu-ated in units no larger than 2 dB.
Instruments considered accep-table for examination are listed below; other instruments may be used ff the model type is qualified.
Krautkramer USIP-11 KRautkramer USL-48 Nortec NOT-131 or 1310 3.3 Transducers 3.3.1 Straf ht Beam - Sfngle or dual element ceramfc type trans-ducers ving an area from 0.049 to 1;0 square inch shall be used.
Base material examf nations and thickness measurements will nonaally be conducted using a 2.25 or 5.0 MHz longitudinal wave transducer;
- however, other fre-quencies may be used where metallurgical characteristics prevent effective use -of 2.25 or 5.0 MHz transducers.
3.3.2 An le Beam - Single or dual element ceramic type trans-ducers aving an area from 0.049 to 1.0 square inch shall be used.
The initial examination will normally be con-ducted using 2.25 MHz shear wave transducers with a beam angle of 43 to 47 degrees.
Other angles and wave modes may.be used for evaluatfon or indications and where wall thickness oi geometric configuration impedes effective use of the 45 degree angle.
The tolerance for other angles shall be +3 degrees.
Transducers of other frequencies and wave modes may also be used for evaluation of indications or where metallurgical characteristics prevent effective use of 2.25 MHz shear wave. transducers.
The transducer exit point and beam angle shall be verified, prior to examination, using an IIM ( International Institute of Welding) or Rompas calibration block.
3.4 Cou lant - Ultragel II or an equivalent shall be used as the iquid couplant.
Certification of acceptable sulfur and halogen content shall be obtained and made available for each lot or batch number.
(a)
Couplant shall be analyzed for sulfur content in accordance with ASTM 0129-64.
The sulfur content of the residue shall not exceed 1>> by weight.
(b)
Couplants shall be analyzed for chloride content in accordance with ASTM 0808-63.
The chloride content of the residue shall not exceed 1>> by weignt.
Page 2 of 19
t)CI 6-13 Rev.
4 3.5 Calibration Blocks - Calibration blocks shall be, as specified fn Section 14 of the Inservice Inspection Program Plan or as specffied by the Responsible Technical Organfzatfon (RTO).
3.6 Surface Pre aratfon
>> The finished contact surfaces shall be free rom we sp atter or any roughness that would interfere with.free movement of the search unit or coatfngs which would impair the transmission of ultrasonic vibrations.
- 3. 7 Instrument Calibratfon - The ultrasonfc instrument linearity.shall be checked each day prior to its use and documented on the Cali-bration Oata Sheet shown in Attachment 7.2.
Lfnearfty shall be determined in accordance with the requirements of Paragraphs (a) and (b) below:
(a)
Screen Hef ht Linearit Check - To verffy the abflfty of t e u trasonic nstrument to meet screen height linearity requirements, position an angle beam search unit so that responses can be observed from any two reflectors in a calibration block.
Adust the search unit position to give a 2 to 1 ratio of amplitudes between the responses, with the larger set at 80% of full screen height (FSH).
Mfthout moving the search unit, adjust the gain control to successively set the larger signal from 100>> to 205 FSH fn 10% increments or in 2 dB increments ff the instrument is equipped wfth a stepped gafn control.
The smaller signal amplitude must be 5(C of'the larger amplitude signal withfn 5C FSH.
Instruments that do not meet thfs requirement shall not be used.
(b)
Am lftude Control Lfnearft Check - To verify the accuracy o, the amplitude contro n the u1trasonic fnstrument, position a search unit so that a response from a reflector in the calfbration block is peaked on the screen.
The signal amplitude shall be brought as near as possible to 80% FSH with the dB control.
If necessary, the final adjustment to 80% FSH can be made with the variable gain control.
Using only the dB control, the dB changes indi-cated below shall be made and the resulting amplitude compared with the allowable amplitude limits.
The proce-dure shall be repeated for 40 and 20 FSH amplitudes.
The initial settings and readings shall be estimated to the nearest 1
of full screen.
Instruments that do not meet this requirement shall not be used.
Page 3 of lg
gCI 6-13 Rev.
4 Inftial Amplitude Set at
% FSH 80 80 40 20 dB Control
~Chan e
-6
-12
+6
+12 Amplftude Lfmits in
% FSH 32 to=48 16 to 24 64 to 96 64 to 96 3.8, General Re uirements for Examination Calfbratfon 3.8.1 3.8.2 3.8.3 3.8.5 3.8.6 3.8.7 Calibration shall be. performed from the surface of the calibration block which corresponds to the component surface to be,examined.
The calibration block temperature shall be within 25'F of the component being examined.
Calibration shall include the complete ultrasonic examina-tion system.
Any change in couplants,
- cables, transducers,
- wedges, ultrasonic fnstruments, or any other parts of the examination system shall be cause for a calibration check.
(a)
At least every 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> during an examination; (b)
At the start and finish of each completed examination; (c)
At each change of examiners; (d)
In the event of loss of power; and e
(e) If any part of the examination system has been
- changed, such as, search units, cables or ultrasonic instruments; (f) If the operator suspects a malfunction.
Calibration checks may be performed on a secondary refer-
- ence, such as an IIM, Rompas block or equivalent, provided the response from the block has been referenced after initial calibration.
The tolerances of 3.8.7 and 3.8.8 shall apply for this operation.
Final calibration shall be performed on the calibration block used for initial calibration.
Recalibration (Swee Onl
)
- If the indication from any ot tne ca ibration re ectors has moved on the sweep line more than 10
, correct the sweep range calibration and note the correction on the Calibration Data Sheet.
If Page 4 of !9
QCI 6-13 Rev.
4 3.9 recordable indications were noted on the Examination Data
- Sheets, those data sheets shall be voided.new calibra-tion shall be made and recorded and the voided examination areas shall be reexamined.
3.8.8 Recalibratfon (Amplftude Onl
) - If the amplitude of any o t e ca bration re ectors has changed by more than 2
dB, all data sheets sfnce the last acceptable calfbratfon check shall be marked void.
A new calibration shall be made and recorded and the vofded examination areas reexamined.
3.8.9 All'requfred calfbratfon data shall'e recorded on the Ultrasonfc Calibration Data Sheet,.2.
Oualffication - Prior to use of this instruction,, the calibration techniques fn 4.0 shall be demonstrated fn the presence of an Authorized Nuclear Inspector.
The successful completion of these calibrations shall be documented on Calibration Sheets, Attachment 7.2.
These calibrations shall serve as a generic,qualification for 'record purposes only as the instruction fs essentially qualf-fied upon each successful calibration used during the course of the weld examinations.
4.0 PROCEDURE 4.1 An le Beam Calibration 4.1.1 4.1.2 Calibrate the, instrument sweep to the required sound path distance using an IIM, Rompas or an equivalent block having known dimensions.
The sweep calibration shall be suffici-ent to include all reflectors required to construct the distance-amplitude correction (DAC) curve.
For the examination of piping welds using the I/2 "Y" path technique, the calibration shall be performed fn accordance wfth the followfng to detect reflectors parallel or trans-verse to the weld:
(a)
Position the search unit for maximum response from the sfae drilled hole (1/8, 2/8 or 3/8 node) which produces the highest amplftude signa1.
For this operation, the centerline of the search unit shall be at least 3/4" from the nearest side of the calibration block to avoid usfng the reflection from the hole and the side of the block.
Adjust the instrument aain to set this signal at 80~ of fu11 screen height ana mark the location and amplitude of the signal on the screen.
Page 5 of 19
OCI 6-13 Rev.
4 (b)
(c)
(d)
(e)
(f)
(g)
Mfthout changing the instrument controls, maximize the signal of the two remaining holes and mark their amplitudes and locations on the screen.
As an alternate, ff the calibration block fs designed such that ft only contains a 1/2 T side dril'led hole, position the search unit for maxfmNa response from this hole.
Then adjust the instrument gain to set this signal at 55 of full screen height and mark the location and amplftude of the signal on the screen.
Mfthout changing the fnstrLmant controls, maximize the signal from this hole. at the 6/8 node position and mark the amplitudes and locations on the screen.
Connect these points on the screen with a lfne and extrapolate the curve an additional 1/4 T to cover the full examination thickness.
This completes the construction of the DAC curve only.
To determine the primary reference level, position the search unit to obtain the maximum response from the notch at the 1/2 "V" path location.
Adjust the amplitude of the notch to be equal to the DAC.curve.
This fs the prfmary DAC reference level.
Record and plot all calfbratfon data on the appropri-ate areas of the Calibration Data Sheet.
After the primary OAC reference level has been.
established on the pipe calibration standard, a cali-bration reference response may be established on a
Rompas or other standard reference block.
The'esponse shall include both sweep and amplitude calibration points and the gain setting used to establish them.
This information,shall be recorded on the appropriate area of the Calibration Data Sheet.
This reference response may then be used to perform calfbratfon checks.
Final calibration,
- however, shall be performed on the pipe calibration standard.
4.1.3 For the examination of piping welds using the 1 "V" path or greater technique, the calibration shall be performed in accordance with the following to detect reflectors parallel or transverse to the weld:
(a)
Position the search unit for maximum response from the circumferrential notch or: the opposite side of the-calibration block and adjust the instrument gain to set the response at 80>> of full screen height.
Mark the location and amplitude on the screen.
Page 6 of l 9
Py
()CI 6-13 Rev.
4 (b)
Nithout a4usting the gain, obtain responses from the notches at 1-and l-l/2 or greater "Y" path locations.
Hark the locations and amplitudes on the screen.
(c)
Connect the points with a line.
This is the primary DAC reference level.
(d)
Record and plot all calibration data on the appropri-ate areas of the Calibration Data Sheet as shown in.2.
(e)
After the primary DAC reference level has been established on the pipe calibration standard, a
calibration reference response may be established on a Raapas or other standard reference block.
The response shall include both sweep and amplitude calibration points and the gain setting used to establish them.
This information shall be recorded on the appropriate area of the Calibration Data Sheet.
. This reference response may then be used to perform calibration checks.
Final calibration,
- however, shall be performed on the pipe calibration standard.
4.2 Strai ht Beam Calibration - Preservice Ins ection Onl 4.2.1 Calibrate the instrument s~eep to a distance sufficient to include the thickness of the material being examined using an III, Rompas or an equivalent block having known dimensions.
4.2.2 For the examination of piping, fabricated from plate material, for laminar reflectors, calibration shall be performed according to the'following:
(a)
Position the search unit on the part to be examined using sQfficient gain to produce a back reflection from the part of at least 80% full screen height.
(b)
.Record and plot all calibration data on the appropri-ate areas of the Calibration Data Sheet.
4.3 Strai ht Beam Examination of Plate Material - Preservice ns ection n
4.3.1 This examination shall 'be performed only on pipe and/or fittings fabricated frcm plate material.
Page 7 of 19
QCI 6-13 Rev.
4 4.3.2 For detection of laminar reflectors in plate material, the search unit shall be placed on the base'aterial and mani-pulated to ensure coVerage of. the entire area through which the sound must pass during the angle beam examination.
4.3.3 9
4.4 An le Beam Examination of fields The instrument gain shall be adjusted during the examina-tion to maintain a back reflection of at least 50K full screen hei ht while scanning.
4.4.1 4.4.2 4.4.3 4.4.4 For detection of reflectors parallel to the weld, the search unit shall be placed on the contact surface with the beam essentially perpendicular to the weld centerline.
The search unit shall be manipulated to ensure the sound beam passes through the entire area of interest using the 1/2 or l-l/2 or greater "Y" path examination technique from both sides of the weld.
Physical or other limitations which prevent complete examination of the area of interest shall be docsnented on the Examination Data Sheet.
For detection of reflectors transverse to the weld, the search unit shall be placed on the weld with the beam directed along the weld in two opposite, directions.
As an alternate, if the weld contour is such that the examination cannot be performed from the weld crown, the search unit shall be placed directly adjacent to the weld edge.
The sound beam shall be directed parallel to the weld and the search unit manipulated laterally and longi-tudinally.
Physical or other limitations which prevent complete examination of the weld area shall be documented on the Examination Data Sheet.
Melds that cannot be examined from at least one side using the angle beam technique shall be examined by another volumetric method.
4.5 Scannina Re uirements for An le Beam Examination 4.5.1 Area of Interest - The area of interest is the volume of material which is to be examined and shall include the inner 1/3 T of the weld and 1/4 inch of adjacent base material on both sides of the weld as measured from the weld crown edge.
Page 8 of 19
'tlCI 6-13 Rev.
4 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6
'The area of interest shall be examined from both sides,
'hen
- possible, with the search unit directed normal to the weld for detection of reflectors parallel to the weld using the 1/2 or 1 or greater "V" path examination technique whichever is applicable.
For examination of reflectors transverse to the weld, the search unit shall be pl'aced on the weld crown when
- possible, and directed. parallel to the weld.
Scanning shall be performed in both directions along the weld.
I For longitudinal weld seams adjacent to'circumferential welds the entire weld length shall-be examined.during preservice examination.
For inservice examina.ion, only the first 1 foot of the weld for Class 1
and 2-1/2 T for Class 2,
need be examined.
All other welds shall. be examined for their full length.
The angle beam coverage for examination of reflectors parallel to the weld using the 1/2 "V" path examination technique shall be sufficient to permit the sound beam to cover the inner 1/3 T of the weld and at least 1/4 inch.of the adjacent base material on both sides of the weld edge.
Manipulation of the search unit over the weld crown may be required to achieve this coverage using the 1/2 "V" examination technique.
For the l-l/2 "V" path technique, the minimum coverage shall be in accordance with the chart below and in all cases shall be sufficient to cover the lower 1/3 of the weld and 1/4 inch of the base material adjacent to the wel d.
Beam Required Scan Distance Measured from the
~An le
- Weld Centerline -'i e Thickness is "T" 45 At least 3-1/2 T 60 At least 5 T 4.5.7 The manual scanning rate shall not exceed 6.0 inches per second. 'ach pass of the search unit shall overlap a
- minimum of l(C of the transducer piezoelectric element
. dimension perpendicular to the direction of scan.
4.6 Scannin Sensitivit
- For angle beam examination, scanning shall be performed at a minimum of 2X (6 dB) above the primary reference level.
Six dB increases the signal amplitude by a factor of approximately 2, making the primary reference curve a
50'L DAC curve.
Recording of indications requires the signal to be adjusted Page 9 of 19
QCI 6-13 Rev.
4
-to the point where it is equal to the DAC curve using the dB control.
Signal amplitude can then be determined from.the following chart using the observed change in the dB control.
dB Gain -
% DAC 0 -
100 112 125 141 159 178 200 224 282 316
-11
<< 355 400 447 501 562 631 708
. 794 891 1000 dB Gain -
% DAC 0 - 100
+1 90
+2
=
80
+3 70
+4 -
63
+5 -,56
+6 50
, +7--
45
+8 36
+9 32
+10 -
28
+12 -
25
+13 -
22
+14 -
20
+15 -
18
+16 -
16
+17 -
14
+18 -
13
+19 - ll
+20 -
10 4.7 Meld Thickness Measurement - Thickness measurements may be taken at or near the 0 degree reference point and at 90 degree intervals around each weld on which a data plot is performed.
The measure-ments will be made on:
(a)
Tie weld centerline; (b)
In the heat affected zone as near as possible to each edge
.of the weld; and (c)
- 4. 7,1 On the base material on each side of the weld.
In addition, the location of the pipe counterbore transi-tion should be determined when possible and the distance from the weld centerline documented on the Examination Data Sheet.
4.7.2 All measurements shall be documented on the appropriate area of the Examination Data Sheet shown in Attachment 7.1.
Page 10 of 19
QCI 6-13 Rev.
4 4.e Data Recordin for Strai ht Beam Examination - If the, response rom the am nar re ector exceeds t e rema ning back reflection response in an area exceeding 3/4" in its longest dimension, the following data shall be recorded on the Exatttination Data Sheet.
(a)
Indication Number - Assign a number, beginning with 1, to h
h (b)
Location Interval - Record the search unit location.
h h
g numbers on the weld.
(c)
~Beam An 1e - Record the search nnft beam ang1e (0').
(d)
(e)
Scan Surface - Record the surface (1 or 2) on ~hich the hh h
h g
g.
Sound Path - Record the sound path distance to the
~re actor.
(f)
Len th - Record the major dimension of the reflector in t e (E DAC length column.
(g)
Prepare a sketch showing the area in which the reflector exceeds the remaining back reflection and attach it to the Examination Data Sheet.
4e9 Data Recordi for An le Beam Examination of Ferritic Steel Melds-If the maximum signa amp etude equals or exceeds
% of the primary reference level, the following data shall be recorded on the Examination Data Sheet.
(a)
Indication Number - Assign a number beginning with 1 to (b)
Location Interval - Record the search unit location
~
h numbers on the weld.
(c)
(d)
I(ei Beam An le - Record the search unit beam angle, typically 4
or 60.
Scan Surface - Record the surface (1 or 2) on which the search unit is being applied.
See Attachment 7.3.
Beam Direction - Beam direc:ion documeh-s the search uh.
orientation with respect to the weld.
Beam direction will be A, 8, C or D.
See Attachment 7.4.
Sound Path - Record the sound path distance to the inaica-tioh at the peak amolitude location.
Page 11 of 19
QCI 6-13 Rev.
4 (g)
Extent - This SnformetSon, recorded
$ n degrees, Ss used to oescrshe the extent of intermittent or continuous geometric indications.
If a more thorough descrfptfon fs required, this blank may be used to reference the notes section.
(h)
Dam able - If an fndfcatfon fs dampable on the surface of t e part, ft should be stated fn this column.
(i)
Amp1<tude - Record the maximum amplitude of the signal as a percentage of the primary reference level.
=
(k)
Len th - Pecord the 50K to 50% and 100% to-l00~
OAC length o
each indication.
Search Unit Posftfon - Record, fn inches, the distance (L) rom the search unit to the smaller'tamped location number and the df stance from the exit point to the weld center-line (M) for longftudinally oriented indications or the distance from the search unit centerline to the weld centerline (M) for transversely, oriented indications.
These measurements shall be taken at the maximum amplitude location.
See Attachment 7.5.
(I)
Throu h Wall Dfmension - If the maxfmum signal amplitude equa s or excee s
DAC, record the minimum and maximum sound path distance and search unit location as the search unit fs moved toward and away from the reflector.
These measurements shall be taken at the 100 OAC level.
The minimum and maximum sound path readings may not necessarily be at the point of maximum signal amplitude, nor do they have to be on the same scan line.
Each fndfcation shall be fully investigated to determine the points at which the minimum and maximum readings occur.
4.10 Data Recording for An le Beam Examination of Austenitic and issimi ar Meta e ds -
ny crac - ike indication, regard ess of amp itude, sna be recorded and investigated to determfne ft's
- shape, identfty and location.
All fndfcatfons 50 OAC or greater detenafned to be geometrical or metallurgical fn origin shall be recorded.
Any other indications determined not to be geometrical or metallurgical in origin shall be recorded if they are 20 of the distance amplitude correction (DAC) curve or greater.
(a)
Indication Number - Assign a number, beginning with I, to (b)
Location Interval - Record the search unit location inter-val with respec-to the stamped dearee location numbers on the welc.
Page 12 of Io
0,
RCI 6-13 Rev.
4 (c)
(d)
~Beam An le - Record the search unit beam angle (0').
Scan Surface - Record the surface (1 or 2) on which the b
b bbtt b
b I
t.b (e)
(e)
(g)
(h)
.(k)
Beam Direction - Beam direction documents the search unit orientation with respect to the weld.
Beam direction will be A, 8, C or D.
See Attachment 7.4.
Sound Path - Record the sound path distance to the reflector.
Extent - This fnformatfon, recorded in degrees, is used to
~e~i7be the extent of Intermittent or continuous geometric indications.
If a more thorough description is requfred, this blank may be used to reference the notes section.
Dam able - If an indication fs dampable on the surface of t e part, it should be stated fn this column.
Amolltude - Record the maximum amp Iftu'de of the signal as a percentage of the prsmary reference level.
Len th - Record the 20% to 2Ã (when required),
50% to 50%
an OX to 100 DAC length of each indication.
Search Unit Position - Record, fn inches, the distance (L) rrom e searcn uni to the smaller stamped location number and the distance from the exit point to the weld center-line (W) for longitudinally oriented indications or the distance from the search unft centerline to the weld centerline (W) for transversely oriented indications.
'hese measurements shall be taken at the maximum amplitude location.
See Attachment 7.5.
Throu h Wall Dimension - If the maximum signal amplitude equa s or exceeds DAC, record the minimum and maximum sound path distance and search unit location as the search unit is moved toward and away from the reflector.
These measurements shall be taken at the 100'X DAC level.
The mi nimum and maximum sound path readings may not necessarily be at the point of maximum signal amplitude, nor do they have to be on the same scan line.
Each indication shall be fully investigated to determine the points at which the minimum and maximum readings occur.
4.11 Examination Records 4.11.1 A Calibration Data Sheet (Attachment 7.2) shall be prepar ed for each calibration.
Page 13 of 19
QCI 6-13 Rev.
4 4.11.2 An Examination Data Sheet shall be prepared for each weld examined and shall be related, by number, to a Calibration Data Sheet.
- 5. 0 EVALUATION 5.1 5.2 All indications detected in the area of interest which produce signal amplitudes greater than 10(5 of the DAC reference level shall be individually reported and an evaluation made in accordance with Paragraph IN-3514 of ASHE Section XI, 1980 Edition Minter 1980 Addenda (Reference 6.1.1).
I Any area where complete examination cannot be performed due to obstructions, configuration of weld, etc., shall be recorded and reported.
5.3 All-data shall be submitted to the Supply System UT Level III for review.
The Level III shall evaluate the examination data and indicate the status of the indication in the Evaluation column of the Ultrasonic Examination Data Sheet.
The Level III shall also complete the Data Evaluation Form in accordance with NDESI Instruction 12-8.
6.0 REFERENCES
6.1 American Society of He-hanical Engineers Boiler and Pressure Vessel
- Code, 1980 Edition through Minter 1980 Addenda.
6.1.1 Section XI - "Rules for Inservice Inspection of Nuclear Power Plant Components".
6.2 The Supply System "Program Manual for Qualification and Certifica-tion of Examination, Testing and Inspection Personnel MHC-034".
7.0 ATTACHMENTS 7.1 Examination Data Sheet 7.2 Calibration Data Sheet 7.3 Examination Surfaces 7.4 Beam Directions 7.5 Search Unit Location and Orientation Page 14 of 19
HAGI 6-13 Rev.
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