ML17291B162

Rev 9 to Procedure Qci 6-4, Ultrasonic Exam Feedwater Nozzle Inner Radii

ML17291B162
Person / Time
Site:	Columbia
Issue date:	03/06/1995
From:	WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
Shared Package
ML17291B161	List: GO2-95-268, Forwards Rev 9 to Procedure Qci 6-4, Ultrasonic Exam Feedwater Nozzle Inner Radii, Per NUREG-0619 ML17291B162
References
QCI-6-4, NUDOCS 9512180151
Download: ML17291B162 (22)

Text

WASIIINGTON PVSI IC POWEA A SUPPI Y SYSTBM No QCI 6-4 Rcv. No.

NDE dk I INSTRUCTION Effccuvc Date 3I20I95

//YES

+ No ULTRASONIC EXA1VHNATIONFEEDWATER NOZZLE INNER RADII 1.0 P

RP E AND P

1.1 This procedure defines the requirements for manual, pulse-echo ultrasonic examination of the feedwater nozzle inner radians, (Zones 1, 2, and 3), ASME Section XI, Category B-D. Scanning by this procedure is done from the reactor vessel O.D. wall and nozzle surfaces using refracted. shear wave search units, Figure 1 illustrates the Zones which can be effectively 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 individual nozzle geometry as depicted in Figures 3a, 3b, 4 and 5.

1.3 This instruction is intended to meet the requirements of Sections V and XI of the ASME Boiler and Pressure Vessel Code (1989, no Addenda).

1.4 BWR Calibration Data listed in Table I have been predetermined from the Supply System's feedwater nozzle mockup so the qualified examiner need only use the vessel calibration block representing the shell course containing the nozzle.

2.D ~S None 3.0

~EU NT 3.1 Personnel ualifications 3.1.1 Contractor and Supply System personnel performing examinations to the requirements of this instruction shall be certified to at least Level II in ultrasonics in accordance with the requirements of Reference 7.2.

Additionally, the examination team shall consist of at least one Level II or Level III in ultrasonics qualified using the Supply System BWR feedwater nozzle mockup and this ultrasonic examination procedure per paragraph 4.3.

DEFr.APPROVhL/DA WFM2 Rg CIKClKDBY/DATE SUPERSEDES ISSUE: (

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Rev. 8,Mated 03/10/93 r'-C -e~

PAGE I

of 21 9512180151 951208 FDR ADOCK 05000397 9...PDR

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QCI 6-'4 Rev. 9 3.1.2 Personnel not specifically qualified on the BWR feedwater nozzle mockup, but designated as Trainee, Level I, II or IIIUT 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 7.2.

3.2 1

ni Instrument 3.2.1 The pulse-echo, ultrasonic flaw detection instruments shall be equipped with a stepped gain control, graduated in units no larger than 2 dB.

Examples of instruments considered acceptable for examination are listed below.

Krautkramer USIP-11

. Krautkramer USL-48 f

6 3.2.2 The pulse repetition rate of the instrument shall be set between 250 Hz and 2000 Hz.

NOTE:

Pulse repetition rates are automatically set by the Krautkramer USL-48 depending on the selected sweep range.

The Sonic 136 automatically sets pulse

/'epetition rates in the selected sweep range unless changed by the operator in the "special" menu.

'.3 Transducers 3.3.1 Single element ceramic transducers, having an area of.44 to 1.0 square inch, with a nominal frequency of 2.25 MHz shall be used with specific wedges as shown in Figure 2.

The refracted angle within the material shall be within the limits shown in Table I. Additionally, data may be taken with other transducer sizes, frequencies, wave modes, and angles, after completing the examination to the above requirements.

3.4

~ale - The maximum length of cable shall be 25'or type RG-174/U with no more than one intermediate connector.

The maximum length'of cable for type RG-58 shall be 100'ith no more than 2 intermediate connectors.

3.5 Qgygi~lan - Soundsafe by Sonotech, Ultragel II, glycerin, or a glycerin deionized water mixture may be used as the liquid couplant.

Other couplants may be used provided they have been approved by the plant.

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38. 8 UND BE.4hl GE ME nY INNCc~ E FOR ZCNE 1

FIGURES 3A and 3B Page 12 of 21

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0 QCI 6-4 Rev. 9 SCAN AREA ScCTIONAL VIEW OF NO~ BOOY FiGURE 4 SOUNO BEAMGEOMETRY-ZONE 2 FIGURE S SOUND BEAbA GE Ll~iRY.ZONES SF'ICNAL llEWCF NO@ '

CY':NOE.-.

FIGURES 4 and 5 Page 13 of 21

QCI 6-4 Rev. 9 NOZZLE NUMBER LOCATcO ON TAPE LINES MARKEO ON NO&LESOOY 3Mc 3CC' 304 50'ONE

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RADIALLINES EX-,ENO AT LEcAST2 PAST REr CIRCLE 2P57 X

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FIGURE 6 NOZZLE MARKINGPLAN Page 14 of 21

V QCI 6-4 Rev. 9

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2) 15 95 RKYIEwto4YR J ~ Jones OATS 2)IS 95 FIGURE 7 Page 15 of 21

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QCI 6-4 Rev. 9 WASHINGTONPUBLIC POWER SUPPLY SYSTEM ULTRASONIC EXAMINATIONDATASHEET - NOZZLE INNER RADIUS Rltonl No.I 1RPU-124 tsoIECTI MNP-2 YSTCMI RPY sI oRAIIUIOHo.5 RPy-JPJ OCELCOESCRIt<<OH5 Reactor Feedkater Nozzle Inner Radius and Nozzle Sore N4-150-1R, N4-150-NB 5IATCRIALTYtCI Carbon Steel OHC NO.5 ONC HO.I 2

OIIC ko.5 3

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ATE 5,2 I 15 I 95 EVICWEO SY5 ATC5 FIGURE 8 Page 16 of 21

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RENCE CiRCI.ES QCI 6-4 Rev. 9 315>>300'0 295>>

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270'>>

255 05'0>>

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65'igure 9A CIRCUMF:-RENTIALAND RADIALSCANNING 40NE 1 PEPERENCE CIRCLES ZCNE 1 REFERENCE A CIRCLES SCAN PA <.-'.S p ri Qkr,'1 Xccr ccinmr rI.c~c Sere

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SC4N IN CW AND CCW DIRECTION CIRCUMFEQQJTIAj SCAiVNING AC i iCiV (MCVINGAZlMUirI5C4N PA ir.'S) r 'gt'N 98 ScbiV P4 ir.'S Xcc:Bet. W+

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SCAN IN CW biND CCW DIRECTION RACIALSCANNING MOTION (FIXED AZWUTHSCAN P>THS)

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FIGURE 9 SCANNING MOTIONS FOR THE ZONE 1 EXAMINATION Page 17 of 21

QCI 6-4 Rev. 9 0'5'4 ZONE 1 REFERENCE CIRCLE,

~po 90 60'IST iVC"(0)

AZ.'LIUirl(A)

RE.-= %ENCE CIRCL=

NOTF.

AU (A) MEASUREMENTS SHALLBBiINCOUNTER CLOCKWISBDIRECTION FROM NEAREST RADIALUNE.

ALL(D) MEASUREMENTS SHALLBB FROM REFPJtENCB CIRCLERADIALLYOUTWARD.

I

'IGURE 10 MEASUREMENT CRITERIA FOR RECORDING UT Page 18 of 21

v QCI 6-4 Rev. 9 AZ(C A)

Far 0 distance measurerhent See rrgure t2 Mid Radius Scan Width (x3cP~)

acius -nd HCZZLE CRCSS SGCTlON FIGURE 11 REQUIRED SCAN PATHS AND MEASUREMENT CRITERIA FOR ZONE 2 EXAMINATIONS Page 19 of 21

QCI 6-4 Rev. 9 CIRCUMFERENTIALSCANS SHAI

'E MAOE IN TWO OIRECTICNS AROUNO THE CYLINOR(CALScEC c cON OF THE NO~c FORGING (TOP)

MEASURE '0 QISTANCES FRCM GREAK POINT ON NOZZLeEFORGING 27C4 ggO SIDE 'llEWCF NC I

I ao.

Reference Az lines are each 15'round the nozzle.

All Az measurements are made in a counterclockwise direction from these lines to the index mark on the search unit. View made looking toward the vessel.

FIGURE 12 ZONE 3 SCANNING AND LOCATION REQUIREMENTS

'Page 20 of 21

QCI 6-4 Rev. 9 315 330 0

15 30 45 3CO 50 285 270 90 255 05 120 21 19 lao lo5 1

5 Plot of lndlcation(s) for nozzle No.:

Report No.:

FIGURE 13 Scale 1/4 Page 21 of 21

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