ML20090L678

Rev 4 to Special Process Std NUT-NC-3, Procedure for Automatic Recording of Ultrasonic Test Data

ML20090L678
Person / Time
Site:	Monticello
Issue date:	01/10/1975
From:	Lambert T NORTHERN STATES POWER CO.
To:
Shared Package
ML20090L649	List: ML20090L647 ML20090L662 ML20090L670 ML20090L678
References
NUT-NC-3, NUDOCS 9102120514
Download: ML20090L678 (8)

Text

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\ vs NUT-NC-3 SPECIAL PROCESS STANDARD , .n. h

.. ... . .,. .it u , cri c o.vi Procedure for Automatic Recording of T. O. Lambert 1/9/75 January 10, 1975 ae movie v oint e.s Ultrasonic Test Data h 7[ 1 or 1.0 SCOPE 1.1 This document covers the requirements and procedures to be used when automatically :'ecording ultrasonic test data on analog charts.

2.0 SPECIFICATIONS 2.1 This specification is to be used in conjunction with the following Nuclear Services Corporatien Special Process Standards.

2.1.1 NUT-NC-1A, Nuclear Ultrasenic Testing Procedure Ultrasonic Inspection of Welds.

2.1.2 NUT-NC-1B, Nuclear Ultrasonic Testing Procedure for Longitudinal Wave Inspection.

2.1.3 NUT-NC-lC, Ultrasonic Exanination of the Inner Radius of Pressure Vessel Nozzle Welds.

2.1.4 NUT-NC-lE, Nuclear Ultrasonic Weld Examination Calibration Procedure. ,

2.1.5 NtTI-NC-7, Nuclear Ultrasonic Examination of Reactor Pressure Vessel Butt and Nozzle Welds.

2.1.6 SNT-TC-1A, Qualification t.nd Certification of. Non-destructive Testing Persor.nel, Supplement C.

2.1 7 NUT-PQ-1, Nuclear Services Corporatien Personnel Qualification Procedure.

2.1.3 ASME B. & P.V. Code,Section XI, Inservice Inspection of Nuclear Eeactor Power Plant Components (Summer 197k).

2.1 9 ASME B. & P.V Oode Section V, Nondestructive Examination (Summer 197h).

3.0 PERSONNEL QUGIFICATIONS

! 31. All personnel performing ultrasonic inspections shall be qualified in accordance with Code accepted standards and procedures as either Level I (Operator), Level II (Inspector), or Level III (Examiner),

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NUT-NC-3, Rev. h SPECIAL PROCESS STANDARD ,

2 or 6 31 (continued) as defined in SNT 'IC-1A, Supplement C and NUT-PQ-1, Rev. O.

Only a Level II Inspector or Level III Examiner shall make judgment as to the acceptance or rejection of indications.

The Nuclear Services Corporation Level III Examiner vill submit to the Purchaser, upon request, a copy of personnel qualification and ultrasonic procedure. Personnel shall, at the request of the Purchaser, demonstrate their knowledge and understanding of pertinent specifications and procedures, and their ability to satisfactorily operate all required equipment prior to performing an ultrasonic $nspection.

33.1 Certification of personnel to NUT-PQ-1 requirements shall be directed by the authorined Level III Examiner.

32 Certifiestion of Personnel 3.2.1 Certification of personnel shall conform to SNT-TC-1A, Supplement C and Nuclear Services Corporation Persormel Qualification Procedure NUT-PQ-1.

3 2.2 In order to obtain certification of any level, the candidate must decenstrate to the Level III Ext. miner's satisfaction a thorough knowled6e of the procedures and requirements contained in ^,his document.

33 Visus.1 Acuity Requirebents l

l Visur.1 requirements for near distance acuity and color shall confcrm to SNT-TC-1A, Supplement C and Nuclear Services Corpora-tion Personnel Qualification Procedure, NUT-PQ-1.

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j 3.h Records l

3.h.1 Records of personnel certifications shall be maintained by the Nuclear Services Corporation Level III Examiner at the Campbell office and at the job site. These records i shall conform to SNT 'IC-1A, Supplement C and Nuclear i Services Personnel Qualification Procedure, NUT-PQ-1.

l 3.h.2 Records of instrumentation calibration shall be maintained by the Nuclear Services Corporation Level III Examiner at the Campbell office and at the job site.

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NUT-NC-3, Rev. h SPECIAL PROCESS STANDARD .

,a 3 or 8 h.0 INSPECTION METHODS b.1 The inspection methods which may be used with this recording procedure are ultrasonic pulse echo, and through transmission.

The ultrasonic energy may be transmitted in either the longi-tudinal or shear wave mode.

50 RECORDING METHODS

, 51 The ultrasonic test data concerning indication range sad I amplitude are (shown in Figure 1) recorded on duel trace analog recording charts. Addition 11 information or test paraneters vill be written on the : hart using the stamped form i shown in Figure 2. Any further information such as transducer i position or direction run shall be hand written on the chart by the technician serving as data recorder.

J 6.0 EQUIPMENT 6.1 The ultrasonic examination shall be performed using a NORTEC i 130D or equivalent ultrasonic tester meeting the requirements of ASTM E-16h and certified to be calibrated according to ASTM E-317 The tester produces an analog output proportional to metal path and a second proportional to amplitude. The instrument also provides digital readout.

f 6.2 The analog signals generated by the tester shall be recorded usin6 a strip chart pen recorder certified to be electronically j calibrated within the past 90 days. A typical recorder for thic

' purpose is the Brush 220.

I 6.3 An ir.tercom system connecting the examiners at the recorder and I the f. ester shall be used where necessary for clear communicatior..

Battery povered, line connected phone systems are considered adequate for this purpose.

70 CALIBRATIO'j, i

i 71 For vessel examinations the ultrasonic tester shall be calibrated to meet the requirements of the ASME Boiler and pressure Vessel Code Sections V and XI, Summer 197h Addenda, and the resulting responses shall be recorded on a calibration record chart.

7 1.1 Amplitude and range readings taken from the digital display of the tester shall be recorded on the calibration chart.

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NUT-NC-3, Rev, h

.m i SPECIAL PROCESS STANDARD h or 8 I-4 8.0 RECORDING OF EXA)CNATION DATA l 8.1 Before the performance of an examination the following data i

shall be recorded on the recording chart using the form stamp j of Figure 2 as a guide.

1) Inspector Names 7) Transducer Size 1

j 2) Weld No. & Configuration 8) Test Frequency t.

3) Type 9) Transducer Angle l

b) Pipe Size & Schedule 10) Chart Speed *

5) Scan No. & Type 11) Sensitivity of Recorder i 6) Report No. 12) Scanning Sensitivity i

8.2 Before and after the performance of an examination, the stability l reference shall be scanned and the resulting trace becomes a 1 permanent part of the examination record.

8.3 The veld shall be scanned in a systematic manner, generally

beginning at a dead center position which shall be noted as i 1200. As the scanning proceeds the 0300, 0600, and 0900 positions shall be noted on the chart record.

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8.3 1 The orientation data essential to indicatien locaticn i shall be noted on the Inspection Report.-

8.h Detailed evaluation of an indication should be noted on the i

recorder chart and amplitude, metal path, and signal with i measurements taken from the digital meter recorded in

. apprapriate locations on the chart.

t l 90 RECORDkNGCONVENTIONS l 91 The left hand ch' art section of the dual trace chart shall be connected to record signal amplitude with positive amplitudes l causing left pen deflection. A full scale deflection on this

! chart shall correspond to a full reale (100%) signal amplitude on the ultrasonic tester.

92 The right section of the dual trace chart shall be used to record metal path (range) with increasing range causing left pen deflections. A full scale deflection on this chart shall l .

correspond to a full range (100% of sucep) display on the l

ultrascnic tester screen.

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10.1 The chart record shall be attached to an ultrasonic report form l.

4 and technique sheet to constitute the permanent incpection record (HSC-TS-003-6/Th), which shall be signed by the examiner l

and his assistant. When requested, all rejectable indications vill be shown on a drawing of the joint.

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11.0 QUALITY ASSURANCE

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11.1 Inspection reords shall be maintained in a field file in such j

condition as to be readily available for audit.

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11.2 It shall be the responsibility of the Nuclear Services Corporatien

• Level III Examiner to enforce the requirements of this procedure.

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Page 8 of 8 RECORD OF REVIGTONS NUT-NC-3 1

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a b 1/10/75 Revised to meet 197h Code 3 8/20/Th Revised 2 3/1/7h Revined 1 7/1/73 Revised 0 7/27/71 Issued for Comments NO. DATE REVISION BY NSC-TS-010-7-71

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