ML20079J627

To Ultrasonic Exam of Nuclear Power Plant Piping

ML20079J627
Person / Time
Site:	Browns Ferry
Issue date:	09/02/1982
From:	Bentley N TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20079J621	List: ML20079J618 ML20079J624 ML20079J627
References
BF-UT-17, NUDOCS 8212280297
Download: ML20079J627 (24)

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Procedure No.

NONDESTRUCTIVE EXAMINATION PROCEDURE BF-UT-17 TVA - DIVISION OF NUCLEAR POWER Revision 1

Section UT N80E3 Page 165 Revised SEP O ;! G82 ULTRASONIC EXAMINATION OF N? CLEAR POWER PLANT PIPING I

Approval 8/M 97 TVA Level lil, Date O

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PDR TVA 6678C (DNP441). NDE Cover Sheet

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NONDESTRUCTIVE EXAMINATION PROCEDURE "U

TVA. DIVISION OF NUCLEAR POWER Fage 166 page Ravi ed REVISION HISTORY LM i og gg g

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No.

Date Page Description 0

9/1/81 N/A Initial issue.

1 3/1/82 3

Added note to permit only one set of notches on flat blocks; changed requirement to allow flat blocks for nominal diameters of curvature greater than 14.0 inches; redefined notch depth determination.

465 Added note 4 to clarify calibration lilock reilut rements for nozzle to safe end welds; redefined thickness (T) tolerance.

8 Added note to paragraph 8.4(a) on sweep range adjustment; added clarification to permit calibratior on one set of notches on flat block 11 Added requirement to paragraph 10.1 for operator reporting of unusual responses.

14 Deleted paragraph 12.0.

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u, TVA 6678E (ONP-8-81) NDE Revision History t.og w

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J Procedure No.

BF-UT-17 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision

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TVA. DIVISION OF NUCLEAR POWER 1

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1 of 19 Section UT N80E3 Page 167 Revised SEP O 21932 3.0 PURPOSF.

1.1 This procedure pr,ovides guidelines for ultrasonic angle beam and straight beam examination of pressure retaining butt welds and adjacent base materials in piping having wall thicknesses from 0.2 to 6.0 inches at Browns Ferry Nuclear Plant.

2.0 SCOPE AND APPLICABILITY _

2.1 Examinations performed in accordance with this procedure comply with the requirements related to examination technique, recording criteria, and evaluation of indications required by the 1977 edition of Section XI of the ASME Cod'e as amended by addenda issued through Summer 1978.

Examinations performed in accordance with this procedure also comply with the additional requirements of the Inservice Inspection Program SI-4.3.G for Browns Ferry Nuclear PJ ant.

2.2 Subject to successful calibration, this procedure may be used to examine ferritic and austenitic welds and ferritic and austenitic wrought or cast base materials. Examinations shall be performed by the contact method from either the inside or outside surfaces or a combination thereof.

3.0, REFERENCES The following documents form a part of this procedure to the extent specified herein.

J3Il Section XI of the ASME Code,1977 Edition, with addenda through Summer

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1978 3.2 TVA Operational Quality Assurance Manual (0QAM) 3.3 TVA Division of Nuclear Power Division Procedures Manual (DPM) 3.4 TVA Surveillance Instruction SI-4.6.G Inservice Inspection Program 4.0 PROCEDURE QUALIFTCATTON The procedure shall be qualified for specific examinations, personnel, and equipment by successful calibration.

m TVA E478D (DNP441). NDE Procedure Shut w-e - - -

Section UT Procedur: No.

BF-UT-17 N80E3 Pcge 168 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision I

d TVA DIVISION OF NUCLEAR POWER Revisd 2122 SEP esse 2

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5.0 PERSONNEL QU/LIFICATION TVA NUC PR personnel performing ultrasonic examination to this procedure shall be qualified in 'accordance with DPM No. N75C01 which complies with ASNT Recommended Practice No. SNT-TC-1A.

Other personnel not in the Division of Nuclear Power should also be qualified in accordance with SNT-TC-1A.

Nondestructive examination personnel.shall be at least NDE Level I to perform ultrasonic examinations. On1'? NDE Level II and NDE Level III personnel shall evaluate indications.

6.0 TEST EQUIPMENT AND MATERIALS 6.1 Ultrasonic instruments shall be the pulse-echo type and shall be equipped with a stepped gain control calibrated in units of 2dB or less.

Instruments shall have had their internal alignment and calibration verified within six months of any implementation of this procedure.

6.2 Connecting cables shall be coaxial and their length limited to less than that at which significant signal degradation occurs but shall not exceed 200 feet.

6.3 Electronic recording equipment, when used, shall be electronically aligned within six months of use.

6.4 Transducer band widths, damping, and center f requency shall be certified by the manufacturer. Transducer active element size shall not exceed 1-1/8 inch diameter or 1 square inch area if rectangular. Appropriate wedges or shoes may be fitted to transducers to provide for signal delays, wear surfaces, and required beam angles and modes of sound.

propagation in the material.

Examinations using dual element search units and/or contour shoes shall be acceptable so long as pretest calibration and calibration checks include these items.

6.5 Couplant materials shall be as low as practical in sulfur and halogen content and shall have a ph of 6 to 8.

Couplants for use on stainless steel or nickel base alloys shall contain no more than 100 ppm of fluorine, 50 ppm of chlorine, and 200 ppm of sulfur. Certification shall be provided on a generic basis for each brand of couplant.

Couplants shall be I!nitel to the materials and applications listed in Part 1.21 of DPM No. N73E1. Couplants may be removed with a dry rag.

6.6 Basic calibration blocks shall be used to establish test system sensitivity.

Blocks shall be fabricated from a material having a chemical composition, tensile strength, and metallurgical structure similar to at least one of I

the base materials in the weldment.

If examination is to be performed 2

from only one side of the veld, the material similarity requirements noted above shall apply to the base material on the side of the weld from which examination is to be performed. Calibration blocks shall conform to the general configuration shown in figure 2.

TVA 6678D (ONP-8-81) NDE Procedure Sheet l

Procodura N2.

BF-UT-17 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision TVA. DIVISION OF NUCLEAR POWER 1

Page l

3 of 19

. Section UT i

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Note: Flat calibration blocks shall only require one notch on the i

top surface and one notch on the bottom surface.

Length and width of block shall be sufficient to permit establishing the required sound path (s) for the beam angle in use.

Notch width (w) shall not exceed 1/4 inch; notch depth (d) shall not exceed 5 percent (t) for ferritic materials and 10 percent (t) for austenitic and nickel-base alloys.

(Note:

(t) for the purposes of determining required notch depths shall be the nominal required wall thickness.) For examination

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TVA 6678 (DNP-8-81)

• NDE Procedure Sheet

5:ction llT Procedura No.

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M80E3 BF-UT-17 P ge 170 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision TVA DIVISION OF NUCLEAR POWER 1

4 of 19 of welds in materials having a contact surface curvature greater than 20 inches in diameter, either flat blocks or blocks having a diameter of curvature equal to o greater than 14.0 inches may be used.

For examination of both circumferential and longitudinal welds in materials having a contact surface curvature less than or equal to 20 inches in diameter, the diameter of curvature of the calibration block ("R" above) shall be essentially the same nominal diameter of curvature as the part.

For purposes of this procedure, material diameters of curvature uithin the range of 0.9 up to and including 1.5 times the calibration block diameter of curvature shall be considered essentially the same.

Calibration block wall thickness (t) shall equal the pipe nominal wall thickness (T) plus or winus 12.5 percent (T).

The diameter (H) of the side drilled holes shall conform to the following table:

Calibration Block Thickness (t)

Hole Diameter (H) 1.0" < t 2 2.0" 1/8" 2.0" < t 2 4.0" 3/16" 4.0" < t 2 6.0" 1/4" Note 1: For taper velds, (t) shall be determined by the larger thickness of material where the search ' nit is applied.

u Note 2: Calibration block concact surface finish shall be representative of the production material contact surface.

Note 3: Other reflectors may be used provided equivalent or better test sensitivity can be demonstrated and the location (s) do(es) not interfere with beam paths f rom the required reflectors.

Note 4: For examination of nozzle to safe-end welds, the calibration block required for the piping to safe-end weld may be used provided all of the following criteria are satisfied:

Chemical composition, tensil strength and metallurgical a.

structure similar to the base material on the side of the weld from which examination is performed, b.

The diameter of curvature of the naterial is within the range of 0.9 to 1.5 times the diameter of the calibration block, (flat calibration blocks may be used for diameters of curvature greater than 20.0 inches), and TVA 6678D (DNP-8-81) NDE Procedure Sheet

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Procedurs N3.

m RF-UT-17 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision TVA. DIVISION OF NUCLEAR POWER 1

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of 14 section UT N80E3 Page 171 Revised SEP O 2 882 c.

The sweep range of the inctrument is adjusted to display sufficieat metal path to cover any additional examination thickness.

Basic calibration blocks shall be maintained and controlled in accordance with the requirements of Part III of the TVA operat ional Quality Assurance Manual.

7.0 VERIFICATION OF INSTRUMENT LINEARITY 7.1 Instrument alignment verification for screen height and amplitude control linearity shall be performed at the beginning of each day of testing in accordance with 7.2 and 7.3 below. These settings and readings must be estimated to the nearest 1 percent full screen. As this check is related only to the U.T. instrument itself, it may be performed with different cables, search units, calibration blocks, etc., than are required for the actual examination.

7.2 Screen height linearity verification shall be performed by positioning a search unit on any calibration or reference block to obtain signals which give a 2:1 ratio of amplitudes between the two.

The gain control (sensitivity) shall be adjusted and the larger signal brought to 80 percent of full screen height (FSH); adjust position if necessary maintaining the 2:1 signal ratio. Without moving the search unit. the gain control shall be adjusted to successively set the larger signal from 100 percent to 20 percent FSH In 10 pereunt increments, or 2dB steps if a fine control is not availabic. The cmaller indications shall be read at each setting. The signal amplitude must be 50 percent of the larger amplitude within 5 percent of FSH.

Instruments that do not meet this requirement shall not be used. The data shall be recorded on the calibration form.

7.3 Amplitude control linearity verification shall be performed by positioning a search unit on a basic or reference calibration bleck to obtain a peaked echo at 80 percent of full scale. The dB changes indicated shall be made and the resulting emplitude compared with the allowable amplitude limits. The resultant signal must fall within the amplitude limits as specified below; instruments that do not meet these limits shall not be used. The procedure shell be repeated for the 40 percent and 20 percent FSH amplitudes and the data recorded on the calibration form.

+*'un TVA 66780 (DNP-8-81). NDE Procedure Sheet

S:ction UT Procedur] No.

N80E3 BF-UT-17 Pcgn 172 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision R

sd TVA. DIVISION OF NUCLEAR POWER 1

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Initial Amplitude dB Control Amplitude Limits Set of % FSH Change __

% FSH 80 6

32 to 48 80 12 16 to 24 40

+6 64 to 96 20

+12 64 to 96 7.4 Instrument linearity verification is required only once each day (24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) for each instrument. The initial verification check performed cach day shall be recorded on the initial pretest callhration record.

Additional pretest calibration records prepared that day shall reference the initial pretest calibration record number for documentation of instrument linearity.

8.0 CALIBRATION 8.1 Pretest calibration is performed on a complete system. Any change in the ultrasonic instrument, cables, or search unit assembly requires test recalibration. Pretest calibration using a basic calibration block is required at the beginning of each day's testing and anytime a change in calibration blocks is required. Calibration shall be performed en a calibration block whose temperature is within +25 F of the material to be examined. The temperature of the enlibration block shall nnt be in excess of ILS F.

8.2 Calibration checku:

8.2.1 Pretest calibrations shall include a test syctem calibration check unless the alterr. ate procedure of paragraph 8.3 is to be utilized. A test system calibration check of the DAC and sweep shall be performed by checking the test system :esponse at primary reference level (or a known increment thereof, e.g.,

6dB, 2x, etc.) from a reflector in a standard reference block such as a Rcmpas or IIW block. A test system calibration check must include the complete test system and shall be required at the beginning and end of each examination, anytime there is a change in examination personnel or every four hours, whichever is less. For the purposes of this procedure, an examination shall consist of a weld joint or repair weld and the adjacent weld or base materials required to be examined with the weld, e.g., inservice examination of a piping circle seam shall include

-,s scans of the adjacent base caterial and the adjacent 12 inches of each long seam.

TVA 6678D (DNP-841)- NDE Procedure Sheet

1 Procedura No.

RF-UT-17 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision TVA DIVl510N OF NUCLEAR POWER 1

Page l

7 of 19 section UI N80E3 Page 173 2E 8.2.2 A test system calibration check is satisfactory if:

a) The change in amplitude of the response signal is less than 20 percent or 2dB of its original amplitude and b) The sweep reading is located on the baseline within 110 percent of the original sweep rerading value.

If either of t ie above criteria is not met, the following actions are required:

1) If the amplitude of the response has decreased 20 percent or more of the original amplitude, a new pretest calthrstion shall be performed and the preceding examination area shall be reexamined. Note:

If more than one area has been examined since the original pretest calibration, it is not necessary to void the original calibration record; however, it will always be necessary to void the preceding examination record.

All voided record numbers shall be reused for the recalibration or reexamination as required.

2)

If the amplitude of the response has increased 20 percent er more of the original amplitude, recorded indications taken since the last satisfactory pretest calibration or calibration check may be reexamined and their values changed on the excmination record.

3)

If the sweep reading location on the baseline has moved more than 110 percent of the original sweep reading value and,

no recordable indications were noted in the previous examination, correct the sweep reading calibration and note the correction on the examination record.

4)

If the sweep reading location on the baseline has moved more than 110 percent of the original sweep reading value and recordable indications were noted in the previous examination, recalibration and reexamination per paragraph 8.2.2(1) l above is required.

I 8.3 As an alternate to test system calibration checks required by paragraph 8.2 above, a complete in-process calibration using the basic calibration 1

block may be substituted for each of the calibration checks required above. In this case, the calibration check using the standard reference block i ty be omitted from the pretest calibration.

m TVA 66780 (DNP-8 81) - NDE Procedure Sheet l

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Section UT Procedura NJ.

N80E3 BF-UT-17 P;ga 174 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision 1

Revised TVA DIVISION OF NUCLEAR POWER SEP O 21352 esg.

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8.4 Angle beam pretest calibration shall be accomplished as follows:

a) The sweep range shall be adjusted to display at least sufficient metal path to cover the intended examination range. This may be accomplished with a standard reference block, the corners of the calibration block or any other convenient means.

(Note: To preclude unnecessary losses of test accuracy, the sweep range should be adjusted to display the minimum required examination range in the left-hand 90 percent of the CRT screen if practical.)

b) Position the search unit on the calibration block surface repre-sentative of the material examination surface, e.g., I.D. surface of block for examinations to be performed from the I.D. of the pipe, etc.

The transducer centerline shall be at least 3/4 inch from the edge of the block and perpendicular to the axis of the calibration reflector. The sound beam shall not be rotated into the corner formed by the reflector and the block edge (s).

c) For examinations using sound paths greater than one-half node, the search unit shall be manipulated to prove the maximum response from the nearest notch. Adjust the instrument sensitivity to provide at least an 80 percent FSH response from this reflector. Without changing the gain, position the search unit to provide the maximum responses from the 0.D. and I.D. notch at suf ficient other metal path distances to cover the expected examination range and mark these points on the CRT screen. These points shall then be joined by a smooth line to form the DAC.

The primary reference level is defined by this DAC.

Other points may be marked on the CRT screen at the examiner's option.

Note: For longitudinal scans, e.g.,

scans 3 and 4, calibration sensitivity shall be established on I.D. and O.D. notches having the notch long axis oriented perpendicular to the pipe centerline, i.e., circumferential notches. For cir-cumferential scans, e.g.,

scans 7 and 8, calibration sensitivity shall be established on I.D. and O.D. notches having the notch long axis oriented parallel to the pipe cent erl ine, i.e., axial notchen.

d)

For examinations using sound paths less than or equal to one-half node, the search unit shall be manipulated to provide the maximum response from the 1/4t side drilled hole. Adjust the instrument to provide at least an 80 percent FSH response from this reflector.

Without changing the gain, position the search unit to provide the maximum response from the 3/4t side drilled hole. Mark the above s.

TVA 6678D (DNP-841). NDE /rocedure Sheet m

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TVA. DIVISION OF NUCLEAR POWER 1

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of 19 Section UT N80E3 Page 175 Revised SEP O 21352 two points on the CRT screen and join with a straight live to define the DAC. The DAC shall be extended at least 1/4t to cover the examinati,on range. The search unit shall then be posittined to provide the maximum response from the axial notch at one-half node sound path and the instrument gain adjusted to bring this respoase to 100 percent DAC. This sensitivity shall be the primary reference level for half node or less examinations.

8.5 Straight beam calibration for test thicknesses greater than 1.0 inch shall be accomplished utilizing axial side drilled holes and the procedures defined in paragraphs 8.4(a), 8.4(b), and 8.4(d) above except adjustment of instrument gain to provide a 100 percent DAC response from the half node notch is not required. Calibration for straight beam examination of test thicknesses equal to or less than 1.0 inch shall be based on a 1/2t axial side drilled hole 1/16 inch in diameter and at least 1-1/2 inches deep.

Instrument gain shall be adjusted to provide an 80 percent FSH response from this hole to establish the primary reference level.

9.0 EXAMINATION 9.1 Examination shall be performed using a nominal 45 beam angle in the item if practical. Other beam angles may; be used for evaluation or where wall thickness or geometry precli te use of the 45 angle beam.

9.2 Examination surf aces shall be free of irregularities, loose foreign material or coatings which interfere with sound transmission to the point of test degradation.

9.3 The frequency and avde of sound transmission shall be selected by the.

examiner; however, the test system must be capable of detecting the required calibration reflectors over the required beam paths (see also 9.1 above).

9.4 Scanning speeds shall not exceed six inches per second unless test system calibration is verified at the higher speed. Scan paths shall normally overlap 15 percent of the active transducer width; overlap shall not be less than 10 percent active transducer width. Scanning shall he performed at two times primary reference level (2x) unless other variables beyond the control of the operator, e.g., inherent material noise levels, preclude meaningful examination at this sensitivity.

Recording and evaluation of indications shall be at primary reference level sensitivity.

TVA 6678D (DNP441). NDE Procedure Sheet I

Siction UT F'rocedurs Ns.

BF-UT-17 N80E3

, Revision Page 176 NONDESTRUCTIVE EXAMINATION PROCEDURE 1

%s TVA - DIVISION OF NUCLEAR POWER Page 10 of 19 l

9.5 Examination Requirements 9.5.1 All welds shall be examined for reflectors parallel to the veld.

This examination may be performed by scanning from one side of the weld using a minimum of one node sound path or from both sides of the weld using a minimum of one-half node sound path.

1 9.5.2 Examination of all velds shall include an examination for reflectors transverse to the weld. This examination shall be performed in two directions from the weld crown using at least a one-half node sound path.

9.5.3 If examination in accordance with paragraphs 9.5.1 end 9.5.2 is possible due to geometrical configuration, either a combination not of, straight beam and angle beam or angic beam in two directions 90 to each other shall be used.

If this cannot be done, the wcldment shall be examined by a surface method.

9.5.4 Minimum examination volumes shall include the weld, heat affected zone, and adjacent base materials as follows.

Code Class Extent of (Examinativu Category)

Weldment Examination 1 (B-F)

Safe end to piping and figure 3 safe end in branch piping welds l (B-J )

Piping to piping circum-figure 4

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ferential welds (Note 1 helow)

Branch pipe connection Weld plus adjacent has 1 (B-J) welds (NPS > 6.0")

material for one wall thickness on main pipe and at least 2.0" on branch pipe 1 (B-K-1)

Integrally welded piping Weld plus base materia supports beneath weld and along support member for two suppurt thicknesses j

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TVA 6678D (DNP-8-81). NDE Procedure Sheet

Procedure No.

ILF-HT-17 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision 7

TVA DIVISION OF NUCLEAR POWER 1

Page 11 of 19 Section UT N80E3 Page 177 Revised SEP O 2 982 9.5.4 (Continued)

Code Class Extent of

(,E amination Category)

Weldment Examination 1

Procedures 4 and 5 weld Weld repair plus repairs adjacent base material for three times repair thickness 2 (C-F or C-C) Pipfat to piping circum-figure 4 ferential welds 2 (C-F or C-G) Longitudinal welds in pipe figure 4 fittings 2 (C-F or C-C) Branch pipe to pipe con-figure 4 nection welds 2

Procedures 4 and 5 weld Same as class 1 above repairs Note 1: Examination of circumferential welds shall include examination of a similar, adjacent volume of any intersecting longitudinal welds for at least 12 inches.

10.0 RECORDING AND EVALUATION OF INDICATIONS 10.1 Not all ultrasonic reflectors indicate flews, i.e.,

are not relevant indications, as certain metallurgical nr geometric conditions may produce indications. All indications producing a response greater than 50 percent DAC except clad interface and back reflections shall be evaluated as required for the examiner to determine relevancy. In addition, indications producing a response of any height which are evaluated by the operator as unusual or an anomaly shall be reported to supervision. Nonrelevant indications producing a response greater than 50 percent DAC except responses from clad interfaces and back reflections shall be noted on the examination report as follows:

a) Response amplitude in percent DAC b) General location of search unit relative to weld where indication is detected m

TVA 66780 (DNP441) NDE Procedure $ hest

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c) Description of cause of indication Records provided by automatic recording equipment annotated to indicate the 'cause of the response shall be considered satisfactory compliance with the above requirements. Alternately, the examination record may be annotated, e.g., " Scan 4, 80 percent DAC, 3:00 to 8:00, counterbore."

10.2 Any relevant indication giving a response greater than 50 percent DAC shall ne recorded. For such indications giving a response greater than 50 percent DAC and equal to or less than 100 percent DAC, the following information shall be recorded:

a) Maxhum response amplitude in percent DAC b) Sweep reading at point of maximum response c) Location of search unit (in "erms of reference system in use) at point of maximum response d) Direction of sound beam Records provided by automatic recording equipment shall be considered satisfactory compliance, with the above requirements.

10.3 For relevant indications giving a response greater than 100 percent DAC, the following information shall be recorded:

a) Maximum response amplitude in percent DAC b) Sweep reading at point of maximum response c) Search unit location (in terms of reference system in use) at point of maximum response d) Scarch unit location and sweep reading at point of 100 percent DAC response when moving from maximum response point toward indication e) Search unit location and sweep reading at point of 100 percent DAC response when moving from maximum response point away from indication 7

TVA 6678D (DNP-8-81) - NDE Procedure Sheet l

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Procedura No.

BF-UT-17 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision TVA - DIVISION OF NUCLEAR POWER 1

Page l

11 of 19 section UT N80E3 Page 179 Revised SEP O 21982 f) Data points (d) and (e) above shall be recorded for successive parallel scans on each side of the point of maximum response until the length of the indication sa determined by 100 percent DAC is reached. Scana shall overlap at least 10 percent active transducer width.

10.4 Reflector data recorded per paragraph 10.3 above shall be evaluated in terias of the acceptance criteria of Article IWA-3000 of Section XI of the ASME Code, 11.0 TEST RECORDS 11.1 An examination report shall be prepared for each item examined and a calibration record for each calib ation. Typical report forms are shown as figures 5 and 6.

Any obstruction or other condition preventing full coverage of the examination shall be recorded on the examination report. When a surface examination la performed in lieu of ultrasonic

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testing per paragraph 9.5.3 above, this f act shall be documented on the examination record and a copy of the surface examination report shall be attached, 11.1.1 The examination report shall contain a sketch which clearly establishes the location reference system for the examination.

11.1.2 Where no permanent reference marks are available, the location reference system shall utilize clock coordinates with 12:00 reference to top dead center on horizontal piping and the outside radius of the nearest elbow on vertical piping.

Branch piping welds are to be referenced according to the branch.

11.1.3 Where permanent reference marks arc available, locations shall be measured secording to the direction of the reference mark.

11.2 Oscillograph chart records and/or magnetic tapes may be made of all examinations.

11.2.1 Chart records used for indication analysis shall utilize two channels, calibrated to match the teater scope on a division-for-division basis, one channel recording maximum vertical sweep deflection, and the other indicatioa range.

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TVA 66780 (DNP441) NDE Procedure Sheet i

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Sectio 2 UT Procedura No.

N80E3 BF-UT-17 P ge 180 NONDESTRUCTIVE EXAMINATION PROCEDURE Revision R. vised TVA. DIVISION OF NUCLEAR POWER I

SEP 0 2152 e.oe 14 of 19

' i 11.2.2 Chart records shall include the calibration checks for each examination.

11.2.3 The chart may be used to record manual data during the examination, including, but not limited to, item, equipment.,

examiner, scans, speed, recorder settings, etc.

11.3 Recording Conventions Ultrasonic scans and the location of indications shall be recorded according to the convention established in figure 7.

Other types of recording, such as event or alarm monitoring, may be used as an aid to the excminer where feasible.

TVA 6678D (DNP-8-81). NDE Procedure Sheet

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p Procedura NO.

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NONDESTRUCTIVE EXAMINATION PROCEDURE Revision TVA. DIVI $lON OF NUCLEAR POWER 1

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g NONCONFORMING SERVICE SENSITIVE PIPING SYSTEM INSPECTION FREQUENCY WELD IDENTIFICATION D

4" Recirc. Bypass Stub Tubes 60 Month Unit 1:

KR-1-1, GR-1-4, KR-1-4, GR-1-7, KR-1-23, GR-1-30, KR-1-26, GR-1-33 Unit 2:

KR-2-1, GR-2-4, KR-2-4, GR-2-7, KR-2-23, GR-2-30, KR-2-26, GR-2-33 Unit 3:

KR-3-1, GR-3-4, KR-3-4, GR-3-7, KR-3-23, GR-3-30, KR-3-26, GR-3-33 Core Spray Each Refueling Outage Unit 1:

DCS-1-3, DCS-1-4, DSCS-1-1, DSCS-1-2, DCS-1-5, DCS-1-6, DSCS-1-3, DSCS-1-4, DSCS-1-5, DCS-1-7, DCS-1-8, DSCS-1-6, DCS-1-9, DCS-1-12, DCS-1-13, DSCS-1-7, DSC3-1-8, DSCS-1-9, DCS-I-14, DCS-1-15, DSCS-1-10, DSCS-1-11, DSCS-1-12, DCS-1-16 DCS-1-17, DSCS-1-13, DCS-1-18 Y

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GR-1-8, KR-1-45 Unit 2:

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DSDl!R-2-4, DShifR-2-1, DRIIR-2-4, DRl!R-2-16, DSRilR-2-7, DSRIIR-2-6 Unit 3:

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