ML20080K731
| ML20080K731 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 05/20/1983 |
| From: | NUCLEAR ENERGY SERVICES, INC. |
| To: | |
| Shared Package | |
| ML20080K631 | List: |
| References | |
| 80A0476, 80A476, NUDOCS 8309290367 | |
| Download: ML20080K731 (25) | |
Text
PROCEDURE NO. 80A0476 )
SUBJECT:
STUDS AND NUTS (
PAGE 1 0F 25 1
.O ULTRASONIC EXAMINATION PROCEDURES FOR CLOSURE HEAD AND RECIRCULATION PUMP STUDS AND NUTS LONG ISLAND LIGHTING COMPANY SHOREHAM NUCLEAR POWER STATION UNIT 1 O
Prep'd by D i 10- $$
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U CG!TROLLE SDPY
,th b l i $ NES 10 - #6 -7 7 Project Mgr Date Rev. No. Date NES , . vm > J y.p. p y Mgr 151, Level lli 7 Date 0 10/19/77 NES '
. J)gjg_ g/p 77 ISI Progpem y Mgr. Level 111 Date NES m!f jf.g.yy QA Mgr. Date LILCO 7.)(, [d 7/,97 9 Date A Date
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NUCLEAR ENERGY SERVICES, INC.
G D DO OOO 2 PDR ,
- 1 PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 2 0F 25 RECORD OF REVISIONS
)
Rev. Prep'd No. Date Description Reason by App'd by I 5/83 Para. 8.2(.1) and ( . 5' Exam requirements / customer NES LILCO l clarification of tecnnique comments, p f 1 5/83 Para. 5 3 1 change to Exam requirements / customer j
4 certify that couplant not exceed 50 PPM halogens comments. f4-/ f-/3 and 200 PPM sulfur.
SEE CRA 3327 e
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NUCLEAR ENERGY SERVICES, INC.
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PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 3 0F 25
,0 i
ULTRASONIC EXAMINATION PROCEDURES FOR CLOSURE HEAD AND RECIRCULATION PUMP STUDS AND NUTS 1.0 SCOPE 1.1 Area of Examination This document covers the ultrasonic examination procedures for the Closure Head and Recirculation Pump Studs and Nuts.
1.2 Type of Examination 1.2.1 Volumetric examination shall be performed using ultrasonic pulse echo 00 straight beam techniques applied to one end surface of the studs and to one end surface of the nuts and nominal 450 ang1_e beam _ _ shear. wave _ applied .to-.the_0D_of..the nuts.
1.2.2 The examination shall be performed manually _using. contact _ _ __-
. ~~ search units (transducers) .
1.3 Time of Examination These procedures shall govern the preservice examination and re-examination of repaired areas of the Closure Head and Re-circulation Pump studs and nuts as required by the ASME BoIIer and Pressure Vessel Code,Section XI.
1.4 Part Configuration 3~
1.4.1 Typical Closure Head stud ano nut configurations and nominal dimensions are shown in Figures 1 and 2.
1.4.2 The Recirculation Pump stud and nut configuration and nominal
! dimensions are shown in Figures 3 and 4.
]
1.5 Materials The Closure Head studs and nuts are constructed of low carbon steel (SA-540 GrB24). The Recirculation Pump Stud (SA-540 GrB23) and nut (SA-194 CL7) are also carbon steel.
2.0 REFERENCES
2.1 Reference Documents l
l The following documents form a part of this examination procedure:
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PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 4 0F 25 O
(1) ASME Boller and Pressure Vessel Code,Section XI, 1971 Edition and the Summer of 1972 Addenda.
(2) ASME Boller and Pressure Vessel Code, Section Ill, 1971 Edition and the Summer of 1972 Addenda.
(3) ASNT Recommended Practice, SNT-TC-1A, Supplement C, Third Edition (1971).
(4) ConAm Procedure for Certifying inspection Personnel, CUTP-1, Rev. 4, September, 1975 (5) ConAm Procedure for Ultrasonic Instrument Linearity Verification, 25-PS-002, Rev. 2, November, 1975 2.2 Applicable Drawings The following drawings are part of this procedure:
(1) CE Assembly Dwg. E-234-254 (2) Byron-Jackson Dwg. 1E-3429-2 2.3 Operatlonal Manuals The equipment operational manuals for the particular ultrasonic
- instruments used form a part of this procedure.
30 PROCEDURE CERTIFICATION The examination procedures described in this document comply with Section XI of the ASME Boller and Pressure Vessel Code, 1971 Edition ,
including Summer 1972 Addenda, except where examination coverage is limited by part geometry or access.
4.0 PERSONNEL CERTIFICATION 4.1 Personnel Certification Requirements l 4.1.1 Each person performing ultrasonic examination governed by this procedure shall be certified in accordance with the i
References 2.1 (1), 2.1 (3) and 2.1 (4).
4.1.2 An examination crew shall consist of one or two members as needed. At least one member of each crew shall have i a minimum qualification of Level 11 in accordance with the above referenced documents. The remaining member shall have a minimum qualification of Level 1.
1 NUCLEAR ENERGY SERVICES. NC.
PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 5 0F L 4.2 Personnel Records 4.2.1 Records of personnel qualification shall be maintained by Examination Contractor.
4.2.2 A copy of the examiner's certification summary and a current eye test as required by SNT-TC-IA shall be filed with each permanent examination record, with a copy submitted to the plant owner or his agent, prior to performing examina-tion per this procedure.
5.0 EXAMINATION REQUIREMENTS 5.1 Examination Frequency 5.1.1 The nominal examination frequency shall be 2.25 MHz for all straight beam examinations.
5.1.2 During preservice examination, other pulse frequencies shall be used only if such variables as material attenuation, grain structure, etc., necessitate their use to achieve penetration or resolution. This information shall be recorded O on the data sheets (Figure 10).
5.2 Examination Angles and Coverage 5.2.1 The intent of this procedure is to provide maximum examina-tion coverage to ensure part integrity. Each part shall be scanned with minimum 25% overlap of the transducer width (diameter) for each scan pass.
5.2.2 The rate of search unit movement shall not exceed six (6) inches per second, i
5.2.3 Each stud shall be ultrasonically examined where part geestry-and-access perivil t, us ing-Oo-strafght beam icchni que:,
applied to the top end of the stud.
5.2.4 Each nut shall be ultrasonically examinad where part geometry and access permit,using 00 straight beau techniques applied to the upper surface of the nut. Each nut shall also be ex-amined-using-nominal 450-angle beam-techn! ques apptled_to_the OD of the nut in two = directions circumferentially.
l 5.2.5 Other angles may be used if required for aid in evaluation of reflectors or to accommodate geometric restrictions and
--limited access.-- All-information-shall be recorded on the_ _ _-
O data sheets.
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PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 6 0F 25 O
5 2.6 Where examination surface, geometry or other conditions (contour, access, etc.) do not permit a meaningful ultra-sonic examination to be performed, the examiner shall record the area of non-examination and the particular interfering condition in the space provided on the Calibration Data Sheet. in addition, he shall make a sketch of the part conditions on the reverse side of the calibration data sheet (Figure 10) .
5.2.7 All examination areas shall be entered in the space provided on the Calibration Data Sheet. If there are no recordable indications, it shall be so recorded.
5.2.8 Coverage for the parts specified in Table I is shown in Figures k 2, 3 and 4.
5.3 Liquid Couplant 5 3.1 The ultrasonic couplant shall be suitable for use on nuclear plant material and certified not to exceed 50 PPM halogens and 200 PPM sulfur.
, 5.3.2 The couplant shall be supplied in clean containers of suf-(]) ficient quantity to perform the examination.
5.3 3 The couplant shall be applied manually with a brush or other suitable device.
5.3.4 Where required, the examiner shall be responsible for removing couplant from the examination surface at the conclusion of the examination.
5.4 Surface Preparation All examination surfaces-should be clean and free of dirt, etc., or any other condition which would interfere with the examination by impairing proper transmission of the sound beam, or by preventing free movement of the search unit along the examination surface.
5.5 Part identification Each part shall be located and identified per the appropriate map located in the Program Plan Book.
5.6 Datum Point 5.6.1 The examiner shall verify that there has been marked, a
, reference datum point on each weld from which all examination
("T v data and reported Indications shall be referenced.
NUCLEAR ENERGY SERVICES,INC,
PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 7 0F 1 0
5.6.2 Datum points shall be marked by the use of low stress stamps or vibratooling and shall not be deeper than 1/32".
5.6.3 The datum point for each closure head stud shall be on a diametric line through the stud identification number at the outer edge of the stud nearest the number.
. 5.6.4 The datum point for each nut shall be on a diametric line
! through the nut identification number at the outer edge of the nut nearest the number.
5.6.5 Each datum point along with respective reference points and
- divisions shall be shown on each examination report.
6.0 EQUIPMENT REQUIREMENTS 6.1 Examination Contractor's Equipment
, The following test equipment or its equivalent shall be provided
- by the Examination Contractor (as..a. minimum) for examination of the Closure Head and Pump studs _and_ nuts
, (1) Pulse Echo Ultrasonic Instrument (in compliance with O Ref. 2.i(>>>.
(2) Search Units, 1/2" to.1-1/2"'Dia, 2.25 MHz, 00 (3) Search Units, 1/2" Dia, 450 angle beam, 2.25 MHz (4) Couplant (5) Camera (6) Thermometer 6.2 Plant Owner's Equipment The Plant Owner or his Agent shall provide the following service l r facilities and equipment as required: l l
! (1) Scaffolding i
(2) Water, Air and Electricity 4
(3) Temporary. Lighting (4) Crane or Lifting Devices O (s) c iibr tie" st #d ra "o s'uo-6 #a stuo-3
.(6) Calibration Standard No. NUT-6 and NUT-3 muctaan asenovsamacesme.
PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PACE 8 0F 25 O
(7) Test Surface Preparation (cleaning and finishing)
(8) Drawings of Each Examination Area (9) Post-Examination Cleanup of Test Area 70 CALIBRATION REQUIREMENTS 7.1 Calibration Data Sheets Calibration Data Sheets shali be numbered 476-1, 476-2, 476-3, etc., at the time of calibration and shall be signed by the examiner (s) upon completion. Figure 10 is an example of the Calibration Data Sheet to be used with this procedure.
7.2 Calibration Standards 7.2.1 The calibration standards designated in Section 6.2.i (5) and (6) shall be used for basic instrument calibration and for establishing reference sensitivity levels for examination of the specified parts (See Figures 5, 6, 7 and 8).
7.2.2 The identity of the calibration standard used for performing O ceiibr tio# sh ii 8e receraea em e ca c iisretio# o t sheet.
7.2.3 Calibration procedures for the examination shall be performed using the surfaces of the referenced standard as shown in Figures 5, 6, 7 and 8.
7.2.4 The temperature of the calibration standard shall be within 25 F of the component temperature. Calibration standard and component temperatures shall be recorded on the Calibration Data Sheet.
7.3 Reference Sensitivity Level 7.3.1 The reference sensitivity level shall be the distance-amplitude curve initially obtained directly from the call-bration standard and shall be the sensitivity level used for evaluating and recording all indications.
7.3.2 During actual part " scanning, the reference sensitivity level 4
shall be increased a minimum of 2X (6dB).
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PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 9 0F 25 O
7.4 Times of Calibaration 7.4.1 Basic instrument calibration shall be performed using the appropriate calibration standard, search units and instrument-ation immediately prior to the examination of the Closure Head and Pump studs and nuts.
~
7.4.2 Instrument vertical linearity checks shall be performed at the beginning of each day of examination in accordance with the procedure referenced in Section 2.1 (5), using an angle beam search unit applied to a suitable calibration standard.
7.4.3 Examination system calibration checks shall be performed at least at the beginning and at the completion of each four (4) hour period of examination and/or at the change of examination personnel, equipment, search units, coupler shoes, etc., and at the completion of the examination of each similar series l of parts in accordance with Sections 8.1 and 8.2 of this procedure.
7.5 Calibration Response 7.5.1 Calibration response shall be checked at the primary reference O. #sitivity i v i-7.5.2 Signal response obtained during calibration check shall be with-In plus or minus 20% of that established during basic system calibration.
7.5.3 if any point on the DAC curve has decreased by more than 20%
of Its ampiitude, the examiner shal1:
(1) Mark all data sheets void since previous calibration.
(2) Recalibrate examination system.
( (3) Re-examine voided areas.
7.5.4 If any point on the DAC curve has increased by more than 20%
of Its amplitude, the examiner shal1:
l I (1) Recalibrate examination system.
(2) Re-evaluate all indications recorded since the previous calibration at the corrected sensitivity level.
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1 PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 10 0F 25 lO 7.5.5 If any point on the DAC curve has moved horizontally more l than 5% of the sweep line from its original settings, the examiner shall:
l (1)' Correct the sweep calibration and note it on the Calibration Data Sheet.
(2) Void any data sheets made since the previous cali-bration which h&ve recorded Indications and re-examine.those areas.
8.0 EXAMINATION SYSTEM CAllBRATION 8.1 Nut Calibration 8.1.1 Straight Beam Calibration i
Straight beam calibration for nuts shall be performed as follows and as shown in Figure 9 (1) Adjust the instrument sweep controls so that the signal responses from the 1/4T, 1/2T and 3/4T holes occur at the second (2nd), fourth (4th) and sixth i
O (6th) aorizoat i scre Positie"=.
(2) Position search unit to obtain maximum response from the hole which gives the highest amplitude signal.
Adjust sensitivity control to provide a signal amplitude of 80% of Full Screen Height (FSH) and mark location and amplitude on the CRT.
i (3) Without changing sensitivity, position the search unit respectively on the remaining holes and mark signal amplitudes and locations on the CRT.
(4) Plot a DAC curve by connecting the locations (marked on the CRT) with a continuous line extended to cover the full examination range as shown in Figure 9 (5) This is the primary reference sensitivity. Record l all sensitivity control settings on the appropriate Calibration Data Sheet.
8.1.2 Angle Beam Calibration (1) Adjust the instrument sweep controls so that the signal response from the ID notch occ'urs at the 8th horizontal screen posttion.
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PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 11 0F 25 O
v (2) Position search unit on the nut lateral surface to obtain maxinium response from the ID notch. Adjust sensitivity control to provide a signal amplitude of 80% of FSH and mark location and amplitude on the CRT.
(3) This is the primary reference sensitivity. Record all sensitivity control settings on the appropriate Calibration Data Sheet.
8.2 Stud Calibration Straight beam calibration for studs shall be performed as follows:
(1) Adjust the instrument sweep controls so that the signal response from the hole in the stud calibration block occurs at the 9th horizontal screen position and that the 3/4T nole from the corresponding nut calibration block occurs at about the 1st horizontal screen position.
See Note.
(2) Position search unit to obtain maximum response from the corresponding nut 3/4T hole. Adjust sensitivity to pro-vide a signal amplitude of 80% FSH and mark its location and amplitude on the CRT.
(3) Position search unit to obtain maximum response from the stud calibration hole and mark signal amplitude on the CRT.
(4) If the response from the stud calibration hole is not detectable at the setting obtained in (2) above, increase the sensitivity setting to provide a minimum of 20% sig-nal from the stud calibration hole. Record the sensi-tivity setting difference on calibration data sheet for use in evaluation of indications.
(5) Plot a DAC line by connecting the locations (marked on the CRT) with a continuous line extended to cover the full examination range (horizontal screen positions 0 thru 9). See Note.
(6) This is the primary reference sensitivity. Record the sensitivity control setting on the Calibration Data Sheet.
(7) Record all data and instrument settings on the CaIIbra-tion Data Sheet.
Note: For recirculation pump studs the 8th horizontal screen position shall be utilized for the stud calibration block hole. -
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PROCEDURE NO. 80AC476
SUBJECT:
STUDS anu nuns PAGE 12 0F 25 8.3 Straight and Angle Beam Calibration Check Straight and angle beam calibration check as required by Section 7.4.3
. shall be performed as follows:
(1) Adjust the sensitivity control settinss to those recorded for the calibrated reference sensitivity.
See Section 8.1.1(2) and 8.1.2(2) for nuts or 8.2(2) for studs.
(2) Reposition search unit at each respective test hole or notch and observe signal response amplitudes and hori-zontal screen positions.
(3) See Section 7.5 for signal response requirements during calibration check.
90 EXAMINATION PROCEDURES (1) Straight and angle beam examination of the closure head i and pump studs and nuts shall be performed at a scanning sensitivity level 2X or 6 dB greater than the calibrated reference sensitivity level.
(2) A suitable scan pattern shall be used allowing a mini-Q mum of 25% overlap of the transducer width (diameter) i for each scan pass.
(3) See Table 1 and Figures 1 through 4 for part designa-tions and scan path distances.
(4) Continue scanning sequences until all parts have been examined. Equipment must not be removed from the crea until all indications have been evaluated.
10.0 EVALUATION CRITERIA 10.1 Recording of Indications 10.1.1 All indications showing a signal amp 1Itude response equal to or greater than 50% of the reference response shall be recorded on the appropriate data sheet at the time of part examination and prior to re..ioving equipment from the examina-tlon area.
4 10.1.2 Each recorded indication shall be identified as to depth, length, signal amplitude and location relative to the part datum point.
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4 PROCEDURE NO. 80A3476 ,
SUBJECT:
STUDS AND NUTS 1'
, PAGE 13 0F 25 O 10.1.3 Indications from all studs and nuts shall_be reported in s inches below the part datum point and in inches clockwise (CW) or counterclockwise (CCW) from the datum point, and in inches
. radially inward towards the center of the part'when looking down upon the' top of the part.
10.2' Evaluation of Indications 10.2.1' Evaluation of all indications shall be made at the reference sensitivity and in accordance with the requirements of the ASME Boller and Pressure Vesse? Code,Section XI, 1S-300. All i evaluations shall *oe performed by a Level 11 or Level 111.
10.2.2 Results of this evaluation shall be reported to the Plant Owner s
or his Agent in accordance with the requirements of the ASME Boiler and Pressure Vessel Code,Section XI,15-600. Disposition of evaluation results shall be made in accordance with the Owner's Plant Procedures.
i 11.0 EXAMINATION RECORDS 11.1 Certification of J Records The examiner shall complete and sign all data sheets inmediately O uPea the comPietion of each Part examiaetion. The data sneets may be reviewed by the authorized Code inspector.
i 11.2 Filing of Reccrds The examiner shall be responsible for submitting to the Plant Owner or his Agent a completely documented set of examination records including certification of personnel qualifications with a current eye test report in accordance with SNT-TC-1A.
11 3 Procedure Corrections and Additions-11.3 1 All procedure corrections and/or additions required during the preservice examinations shall be made in accordance with requirements of NES QA Program Plan #NES 80A0448.
11.3.2 The examiner will contact the LILCO representative on site i to initiate all such changes. All changes shall be documented in the record of revisions section of this procedure.
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PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 14 0F 1 i >
Scan entire flat surface ID Number
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- k 4). ]
__ 2. , zi. _
O straight beam one direction from top end
, 6" _
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! I i I i l i i l 48-7/8" i 1 1
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l I Figure 1. Ultrasonic Examination Procedures for Closure Head Studs e
NUCLEAR ENERGY SERVICES, INC.
PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 15 0F 1 1 >
Scan Entire Fiat '
Surface ,
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/
/
/ -
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it 4
\ h 45 ~
\
\ 3600
\ /
\ '
\ '
Scan the entire ID Number s
,- 45 circumference to full height 3600 0 Straight Beam Top q g Surface Only
-_ _ _____ _.__ _______ g b'Nl .! 'N -
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i 45 I
' ( s 6-5/8" in two '
directions i i '
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o l 6-9/32" l 8-3/4" = .
Figure 2. Ultrasonic Examinatior, Procedure For Closure Nuts o
NUCLEAR ENERGY SERVICES, int..
PROCEDURE NO. 80A0476 ;
SUBJECT:
STUDS AND NUTS PAGE 16 0F 25 O ,
. i.
, 2-3/k", - - -}- - - -
l Scan entire surface 1
l N 00 straight beam n
. one direction from top end i o e I [
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20-1/2" ., ,
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I FIGURE 3 ULTRASONIC EXAMINATION PROCEDURE FOR RECIRCULATION PUMP STUD
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PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 17 ~ 0F 25 O
l Scan entire flat su,rface l + \ 45 4-1/4" 30 0 45 Scan the entire l circumference to o 3600 full height 00 straight beam
=
2-3/4 " / one direction from top end I
f I Y
fy,/
I 2-3/4" I I
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[ 45 in two directions FIGURE 4 ULTRASONIC EXAMINATION PROCEDURE FOR RECIRCULAT.10N PUMP NUT l
l wcLtam teacy stavtets,pec d
PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 18 0F 25 l l O
I-1/2"
_ ( 4 6 _
Examination Surface c -
, i I l . i l_ _ -6__ '
!- - J I I l i [
I
=i::i = .
i g
i i I i i l l t l
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! i i l 48-7/8" w' !
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!' 3/8" Dia. flat bottom ~
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[ hole Note: Hole rotate'd for clarity.
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3"
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= 6' _l
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l I Figure 5 Ultrasonic Reference Standard STUD-6 for Closure Head Studs )
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ja NUCLEAR ENERGY SERVICES. INC.
1
PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 19 0F 2c; e o
,- O~ ,
/ ' ' -
/ s
/ 's
/ \
/
- ; r -
\
\ 7.50" ,
N .
\ ,' j 10% notch depth
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3/8" Dia. ' '
Flat-bottomed Hole (TYP. 3) ,
- - -- Angle Beam Examination
$iStraight Beam Surface Examination-Surface N1 SM /^
N ,
n y 6-5/8" I
4.97" 3.31" Figure 6 Ultrasonic Reference Standard NUT-6 for Closure Head 8 '
Nuts e
NUCLEAR ENERGY SERVICES, int.. l
PROCEDURE NO. 80A0476
SUBJECT:
STUDS A~ND NUTS PAGE 20 CF 25~
O 2-3/4" --@- -- ,
I i
't Examination Surface O +
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1
- I 20-1/2" 3/8" Diam. Flat Bottom hole I
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FIGURE 7 ULTRASONIC REFERENCE STANDARD STUD-3 FOR RECIRCULATION PUMP STUD uctma cvumnen e
PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 21 0F ? c; O
.l
, - 4,'b . ,
- s N
/ \ \
/
/ s f \
4-1/4" ,
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'N , 10% depth notch
's _ _ /
- \
Straight Beam O _
2-3/4'L Examination Surface
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[ , Angle Beam Examination I
l1 y n Surface 2-3/4" ' ' i' '
l M' 'ii f y i l 11 Il r7 11 'l I l
1 38"2.06"
.69" 8 I ie li il 'l il lt 8
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f U FIGURE 8 ULTRASONIC REFERENCE STANDARD NUT-3 FOR RECIRCULATI0d PUNP NUT O
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PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS PAGE 22 0F 1 O
I 2 3 I f-m e
)
O m h I I/4T l l l I I '
l 3/4T I
3 x
d
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,i i, e 11 i e i I I I l i 0 2 4 6 8 '
Typical DAC Curve Step I - Adjust sweep controls so that 1/4T, 1/2T, and 3/4T holes are O iocated re Pectiveiv on the 2nd, 4th, and 6th horizontai screen positions..
Step 2 - Adjust. sensitivity to provide 80% FSH Indication from hole giving maximum response - mark position on screen.
Step 3 - Position search unit for maximum response from remaining holes -
. mark position on screen.
Step 4 - Plot DAC by connecting points marked on screen with line extended to cover entire examination range. _ _
Step 5 - For angle beam calibration only, adjust sweep controls so that the notch is located on the 8th horizontal screen position and adjust sensitivity to provide 80% FSH Indication. Mark screen with an "X".
~ Step 6 - Record all sweep and sensitivity control settings on respective data sheets.
Figure 9 - Reference Sensitivity and DAC Calibration Procedures for Ultrasonic Examination.
_ p ..-.-.-
Plent/ Unit Dr.ta Shast No. l Comp / System CALIBRATION DATA SHEET Procedure No.
Subject Rev/ Change No.
INSTRUMENT SETTINGS SEARCH UNIT Calibration O Mfg /Model No.: Scan Angle: Mode:
Block No.
Surface Serial No. : Fixturing (if any): Block Temp "F Sweep Length Style or Type No. :
Sweep Delay : Size & Shape : Tnerr. n d Pulse Length / Damping: Freg.1ency
- Freq.: Rep. Rate: 5erial No/ Brands Filter: Video: Jack: Measured Angle :
DEC/ Gate Switch: Range: Cable Type & Length:
Mode Select: Reject: Couplant Brand:
Gain (coarse): (fine): Couplant Batch:
m ar. DAC PLOT INSTR. LINEARITY CAL. 1 2 3 4 5 90 -
Amplitude ac 70 High Low High Low oc SCAN AREA 1 5 s(
4C 0* WRV p __ .. __ , . ,
2 6 30 0' Mat'l 2c I I '
O 3 7
.l.to Weld
,o nn ein n.,
i n d. i., ,tn in g..
- i. ,,i in n 4 8 o 1 2 3 4 s a 7 a o to AMPL. CONTROL LINEARITY Initial 6 dB Result EXAMINATION RECORDABLE INDICATION COMMENTS / REASON FOR 80 -6 WELD / AREA INCOMPLETED SCAN (S) 80 -12 40 +6 20 +12 CALIBRATION CHECKS TIME Initial Cal. i Intermediate l i l I
Intermediate Intermediate Final Cal.
ADDITIONAL SHEETS? (CHECK BOX) EXAMINERS 1 Date Level Continuation Beam Plot 2 Date Level Supplements Non REVIEWER 9:UCLEA4 ENERGY SERV 1CEilfMC.
Figure 10 Calibration Data Sheet
PAGE 24 0F 25
-02tum - - - -
7% CW SUPPLEMENT A CCW n , gg g g INDICATION REPORT SHEET Procedure No.
Subject 4_____. __ , _i l.
Area No.
Page of Attached to Cal.
Data Sheet No.
or Nut
- Y2 -- ,
Notes :
(1) X-axis increments not to exceed allowable scan increments.
7 . (2) End points shall be : 50% of DAC l (6db).
Dl - - - - - - - - - - -
6
~~~l Y *
^
-f ,
1 FORWARD BACK INDI- Y @ MAX CATION SIDE OF D (1) MAX (f) (b)
X % DAC % DAC NDPOINTENDPOINT NO. DATUM (in T/8s) ( db) (a) y (a)
I COMMENTS EXAMINERS
- 1. Da*.e Level O
- 2. Date Level muctramenamov sa a ac.
- PROCEDURE NO. 80A0476
SUBJECT:
STUDS AND NUTS
- PAGE 25 0F 25 ;
O TABLE I WELD IDENTIFICATION NUCLEAR COMPONENTS DESCRIPTION REFERENCE BLOCK REFERENCE FIGURES NOTES
~ ~~
Closure Head Studs - 325-01-01 STUD-6 Figures i, 5 ~ Scan One End thru 52 ,
only Closure Head Nuts - 325-02-01 NUT-6 Figures 2, 6 thru 52 ,
Recirculation Pump (B31-001A) STUD-3 Figures 3, 7 Studs 1 thru 16 Recirculation Pump (B31-001A) NUT-3 Figures 4, 8 ,
Nuts 1 thru 16 O Recirculation Pump (B31-001B)
Studs I thru 16 STUD-3 Figures 3, 7 Recirculation Pump (B31-001B) NUT-3 Figures 4, 8 U Nuts 1 thru 16 l
l O
NUCLEAR ENERGY SERVICES, INC,
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