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| {{#Wiki_filter:Re quest for Relief 48 Re quest for Relief 48 q | | {{#Wiki_filter:Requestq for Relief 48 Phased Array Ultrasonic Examination in lieu of Radiography Ari ona P Arizona Publicblic Service Ser ice Compan Company Douglas Hansen Sr Consulting Engineer & Level III |
| q Phased PhasedArray Ultrasonic Examination Array Ultrasonic Examination in lieu of
| |
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| in lieu of Radiography RadiographyArionaPblicSericeCompan ArionaPblicSericeCompan Ari z ona P u blic Ser v ice Compan y Ari z ona P u blic Ser v ice Compan y Douglas HansenSr Consulting Engineer & LevelIII Agenda*Applicable codesRlifRt48S*R e li e f R eques t 48 S cope*Reasonfor Relief Request 48
| | Agenda |
| *CodeCaseN-659-2*Code Case N-659-2 *Paragraph summary comparison (Attachment 2 of Relief Request)P/ThiVlidti
| | * Applicable codes |
| *P rocess/T ec h n i que V a lid a ti on*Samplecomparison graphics
| | * R li f R Relief Requestt 48 Scope S |
| *Conclusion Applicable Codes | | * Reason for Relief Request 48 |
| *Construction Code ASME III | | * Code Case N-659-2 |
| *1974 Edition,Winter 1975 Addenda | | * Paragraph summary comparison (Attachment 2 of Relief Request) |
| *Repairs/Replacements | | P /T h i |
| *ASMEXI2001Edition,2003AddendaASME XI 2001 Edition, 2003 Addenda Scope*ASME Class 2 piping circumferential butt welds | | * Process/Technique V Validation lid ti |
| *Carbon steel base and weld metal | | * Sample comparison graphics |
| *Thickness > | | * Conclusion |
| 0.337" *Diameters > | | |
| 6" NPS*Geometry shall allow 100% coverage | | Applicable Codes |
| *Weldand1/2"basemetaloneachside | | * Construction Code ASME III |
| *Weld and 1/2 base metal on each side*PVNGS Units 1, 2 and 3 forthe 3 rdinterval*Unit 1 thru 7-17-2018
| | * 1974 Edition, Winter 1975 Addenda |
| *Unit 2 thru 3-17-2017 | | * Repairs/Replacements |
| *Unit 3 thru 1-10-2018 | | * ASME XI 2001 Edition, 2003 Addenda |
| | |
| | Scope |
| | * ASME Class 2 piping circumferential butt welds |
| | * Carbon steel base and weld metal |
| | * Thickness > 0.337 |
| | * Diameters > 6 NPS |
| | * Geometry shall allow 100% coverage |
| | * Weld and 1/2 1/2 base metal on each side |
| | * PVNGS Units 1, 2 and 3 for the 3rd interval |
| | * Unit 1 thru 7-17-2018 |
| | * Unit 2 thru 3-17-2017 |
| | * Unit 3 thru 1-10-2018 |
|
| |
|
| ===Reason for Request=== | | ===Reason for Request=== |
| *Personnel-using Phased Array Ultrasonic Examination Technique (PAUT) reduces: | | * Personnel - using Phased Array Ultrasonic Examination Technique (PAUT) reduces: |
| *Exposure risk | | * Exposure risk |
| *Dose*Crew size*Outage-using PAUT:Reducestimeforresults | | * Dose |
| *Reduces time for results*Reduces impact to the schedule | | * Crew size |
| *Allows adjacent work to proceed | | * Outage - using PAUT: |
| *Reduces risk (errors) associated with | | * Reduces time for results |
| ()starting/stopping/rescheduling critical activities
| | * Reduces impact to the schedule |
| *Quality-using PAUT: | | * Allows adjacent work to proceed |
| *Increasescriticalflawdetection Increases critical flaw detection*Provides flaw depths for repairs | | * Reduces risk ((errors)) associated with starting/stopping/rescheduling critical activities |
| *Recorded data for reviews and retention Code Case N-659-2 Inquiry: Under what conditions and limitations may an ultrasonic examination beusedinlieuofradiographywhereradiographyisrequiredbyNB | | * Quality - using PAUT: |
| -5200, be used in lieu of radiography where radiography is required by NB 5200, NC-5200, ND-5200, WB-5200 or WC-5200, and substitution of ultrasonic examination would not otherwise be permitted?Reply: It is the opinion of the Committee that all welds may be examined using the ultrasonic (UT) method in lieu of the radiographic (RT) method, providedthatallofthefollowingrequirementsaremet:
| | * Increases critical flaw detection |
| provided that all of the following requirements are met: | | * Provides flaw depths for repairs |
| | * Recorded data for reviews and retention |
| | |
| | Code Case N-659-2 Inquiry: Under what conditions and limitations may an ultrasonic examination be used in lieu of radiography where radiography is required by NB-5200, NB 5200, NC-5200, ND-5200, WB-5200 or WC-5200, and substitution of ultrasonic examination would not otherwise be permitted? |
| | Reply: It is the opinion of the Committee that all welds may be examined using the ultrasonic (UT) method in lieu of the radiographic (RT) method, provided that all of the following requirements are met: |
| | |
| N-659-2 (a) Examination Area | | N-659-2 (a) Examination Area |
| *Additional restrictions: | | * Additional restrictions: |
| *100% coverage (in all 4 directions) | | * 100% coverage (in all 4 directions) |
| *Weld ground flush | | * Weld ground flush |
| *Surfaceexamination(PTorMT)SfEA B Surface examination (PT or MT)S ur f ace Exam A-B1/2"1/2"AB CDPAUT Exam Volume A-B-C-D N-659-2 (b) Examination Procedure | | * Surface examination (PT or MT) |
| *Additional restrictions:
| | S f Surface EExam A-B AB 1/2 1/2 A B C D PAUT Exam Volume A-B-C-D |
| *ASME Section V Article 4; 2001 Edition, 2003 Addenda
| |
| *PAUT with minimum of 40-70 degrees
| |
| *Volumescannedwith0degreeVolume scanned with 0 degree N 6592()PdDtti*Additional restrictions:
| |
| *Demonstrationforeachnominaldiameterandthickness N-659-2 (c)P roce d ure D emons t ra ti onDemonstration for each nominal diameter and thickness*Essential and non-essential requirements documented N-659-2 (d) Qualification Blocks
| |
| *Additional restrictions:
| |
| *For each nominal diameter and thickness 692()il*Additional restrictions:
| |
| *None;castandausteniticproductsarenotincluded N-6 5 9-2 (e) Mater i a l s*None; cast and austenitic products are not included N-659-2(f)ExaminationPlan
| |
| *Additional restrictions:
| |
| *None; an exam plan and sketch will be provided N-659-2 (f) Examination Plan N-659-2 (g) Acceptance Criteria
| |
| *Additional restrictions:
| |
| *ASME Section III; 2001 Edition, 2003 Addenda N-659-2 (h) Pre-Service Examinations
| |
| *Additional restrictions:
| |
| *Pre-Service Examinations (PSE) will be performed, when required, in addition to the proposed PAUT examinations
| |
| *Additionalrestrictions:N-659-2 (i& j) Acquisition Additional restrictions:
| |
| *None, examinations will be auto (encoded) and recorded
| |
| *Additional restrictions:
| |
| *Noneforacquisitionpersonnel;theywillbequalifiedand N-659-2 (k) Acquisition Personnel
| |
| *None , for acquisition personnel; they will be qualified and trained using the same demonstrated equipment N-659-2 (k) Analysis Personnel
| |
| *Additional restrictions:
| |
| *They will demonstrate their capability to detect and characterize flaws; will utilized data acquired with the demonstrated procedure; and:
| |
| *Detection*ASME XI Table VIII-S2-1
| |
| *Flawed grading units will be 1/4" longerthanactualflaw longer than actual flaw*Unflawed grading units will be a min of 1"*At least 2 of the flaws will meet N-659-2 (d) sizes
| |
| *Sizing*Flaws will be sized as being >
| |
| actual lengthFlillbl*Flaws w ill b e proper l y categorized as surface or
| |
|
| |
|
| subsurface Additiltiti N-659-2 (l) ANII | | N-659-2 (b) Examination Procedure |
| *Additi ona l res t r i c ti ons:*None; review and acceptance of the ANII N 6592(m)Other Requirements | | * Additional restrictions: |
| *Additional restrictions: | | * ASME Section V Article 4; 2001 Edition, 2003 Addenda |
| *None; other related requirements will be met N-659-2 (m) Other Requirements N-659-2 (n) Repairs | | * PAUT with minimum of 40-70 degrees |
| *Additional restrictions: | | * Volume scanned with 0 degree N 659 2 (c) |
| *None; flaws will be repaired and the weld re-examined | | N-659-2 ( ) Procedure P d D Demonstrationt ti |
| *Additional restrictions:
| | * Additional restrictions: |
| *None;theCasenumberwillberecorded N-659-2 (o) Code Case
| | * Demonstration for each nominal diameter and thickness |
| *None; the Case number will be recorded Process/Technique Validation | | * Essential and non-essential requirements documented |
| *PVNGS developed a set of actual weld flawed specimens | | |
| *Flaws totaled over 60 for Carbon Steel | | N-659-2 (d) Qualification Blocks |
| *Porosity*Incomplete fusion | | * Additional restrictions: |
| *Incompletepenetration Incomplete penetration | | * For each nominal diameter and thickness N-659-2 6 9 2 (e) ( ) Materials i l |
| *Slag*CrackingSihbdihd fi*S pec i mens have been ra diograp h e d f or compar i son*Specimens are being digital radiographedfor additional comparison Process/Technique Validation Process/Technique Validation RESULTS RESULTS *PAUT detected all the RT indicated flaws | | * Additional restrictions: |
| *PAUT detected several additional areas of incomplete fusion | | * None; cast and austenitic products are not included N-659-2 (f) Examination Plan |
| *PAUTdetectedallofthecracksintheexamvolume
| | * Additional restrictions: |
| *PAUT detected all of the cracks in the exam volume 14-100-CS SLAGRT ~1" lengthPAUT ~1" length 8-120-CS Incomplete FusionRT ~1" intermittent PAUT~1"length PAUT ~1 length 12-100-CS Incomplete PenetrationRT ~ 3/4" length PAUT~3/4"length PAUT 3/4 length (~1.2" in other direction) 8-120-CS PorosityRT ~1" lengthPAUT ~1" length 10-60-CS ID Crack (PT) | | * None; an exam plan and sketch will be provided |
| | |
| | N-659-2 (g) Acceptance Criteria |
| | * Additional restrictions: |
| | * ASME Section III; 2001 Edition, 2003 Addenda |
| | |
| | N-659-2 (h) Pre-Service Examinations |
| | * Additional restrictions: |
| | * Pre-Service Examinations (PSE) will be performed, when required, in addition to the proposed PAUT examinations N-659-2 (i & j) Acquisition |
| | * Additional restrictions: |
| | * None, examinations will be auto (encoded) and recorded N-659-2 (k) Acquisition Personnel |
| | * Additional restrictions: |
| | None for acquisition personnel; they will be qualified and |
| | * None, trained using the same demonstrated equipment |
| | |
| | N-659-2 (k) Analysis Personnel |
| | * Additional restrictions: |
| | * They will demonstrate their capability to detect and characterize flaws; will utilized data acquired with the demonstrated procedure; and: |
| | * Detection |
| | * ASME XI Table VIII-S2-1 |
| | * Flawed grading units will be 1/4 longer than actual flaw |
| | * Unflawed grading units will be a min of 1 |
| | * At least 2 of the flaws will meet N-659-2 (d) sizes |
| | * Sizing |
| | * Flaws will be sized as being > |
| | actual length Fl |
| | * Flaws will ill b be properly l |
| | categorized as surface or subsurface |
| | |
| | N-659-2 (l) ANII |
| | * Additionall restrictions: |
| | Additi t i ti |
| | * None; review and acceptance of the ANII N 659 2 (m) Other Requirements N-659-2 |
| | * Additional restrictions: |
| | * None; other related requirements will be met N-659-2 (n) Repairs |
| | * Additional restrictions: |
| | * None; flaws will be repaired and the weld re-examined N-659-2 (o) Code Case |
| | * Additional restrictions: |
| | * None; the Case number will be recorded |
| | |
| | Process/Technique Validation |
| | * PVNGS developed a set of actual weld flawed specimens |
| | * Flaws totaled over 60 for Carbon Steel |
| | * Porosity |
| | * Incomplete fusion |
| | * Incomplete penetration |
| | * Slag |
| | * Cracking |
| | * S Specimens i h have been b radiographed di h d for f comparison i |
| | * Specimens are being digital radiographed for additional comparison |
| | |
| | Process/Technique Validation Process/Technique Validation RESULTS |
| | * PAUT detected all the RT indicated flaws |
| | * PAUT detected several additional areas of incomplete fusion |
| | * PAUT detected all of the cracks in the exam volume |
| | |
| | 14-100-CS SLAG RT ~1 length PAUT ~1 length |
| | |
| | 8-120-CS Incomplete Fusion RT ~1 intermittent PAUT ~1 |
| | ~1 length |
| | |
| | 12-100-CS Incomplete Penetration RT ~ 3/4 length PAUT ~3/43/4 length |
| | (~1.2 in other direction) |
| | |
| | 8-120-CS Porosity RT ~1 length PAUT ~1 length |
| | |
| | 10-60-CS ID Crack (PT) |
| RR 48 Summary | | RR 48 Summary |
| *Additional restrictions (requirements) to N-659-2: | | * Additional restrictions (requirements) to N-659-2: |
| *Automated (encoded) Phased Array Ultrasonic Examination | | * Automated (encoded) Phased Array Ultrasonic Examination |
| *Allweldswillreceiveasurface(PTorMT)examination
| | * All welds will receive a surface (PT or MT) examination |
| *All welds will receive a surface (PT or MT) examination | | * Weld caps will be ground flush |
| *Weld caps will be ground flush | | * Volume will be scanned in all 4 directions |
| *Volume will be scanned in all 4 directions | | * 100% coverage |
| *100% coverage | | * Volume will be scanned with a 0 degree |
| *Volume will be scanned with a 0 degree | | * Demonstration for each nominal diameter and thickness |
| *Demonstration for each nominal diameter and thickness | | * Data will be recorded for analysis and retention |
| *Data will be recorded for analysis and retention | | * PSE will be in addition and per ASME Section XI |
| *PSEwillbeinadditionandperASMESectionXI
| | |
| *PSE will be in addition and per ASME Section XI Conclusion ConclusionRR 48 utilizes as a basis Code Case N-659-2RR48 requires additional restrictionsRR 48provides an acceptable level of quality and safety}} | | Conclusion RR 48 utilizes as a basis Code Case N-659-2 RR 48 requires additional restrictions RR 48 provides an acceptable level of quality and safety}} |
Letter Sequence Request |
|---|
|
|
MONTHYEARML12229A0462012-08-0101 August 2012
Relief Request 48 - Proposed Alternative to American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section III - Phased Array Ultrasonic Examination Techniques in Lieu of Radiography
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Relief Request 48 - Alternative to ASME Section III, Phased Array Ultrasonic Exam Techniques in Lieu of Radiography for Remainder of Third 10-Year Inservice Inspection Interval
Project stage: Other
2012-08-17
[Table View] |
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Category:Meeting Agenda
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2024-01-25
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Text
Requestq for Relief 48 Phased Array Ultrasonic Examination in lieu of Radiography Ari ona P Arizona Publicblic Service Ser ice Compan Company Douglas Hansen Sr Consulting Engineer & Level III
Agenda
- R li f R Relief Requestt 48 Scope S
- Reason for Relief Request 48
- Paragraph summary comparison (Attachment 2 of Relief Request)
P /T h i
- Process/Technique V Validation lid ti
- Sample comparison graphics
Applicable Codes
- Construction Code ASME III
- 1974 Edition, Winter 1975 Addenda
- ASME XI 2001 Edition, 2003 Addenda
Scope
- Carbon steel base and weld metal
- Geometry shall allow 100% coverage
- Weld and 1/2 1/2 base metal on each side
- PVNGS Units 1, 2 and 3 for the 3rd interval
Reason for Request
- Personnel - using Phased Array Ultrasonic Examination Technique (PAUT) reduces:
- Reduces impact to the schedule
- Allows adjacent work to proceed
- Reduces risk ((errors)) associated with starting/stopping/rescheduling critical activities
- Increases critical flaw detection
- Provides flaw depths for repairs
- Recorded data for reviews and retention
Code Case N-659-2 Inquiry: Under what conditions and limitations may an ultrasonic examination be used in lieu of radiography where radiography is required by NB-5200, NB 5200, NC-5200, ND-5200, WB-5200 or WC-5200, and substitution of ultrasonic examination would not otherwise be permitted?
Reply: It is the opinion of the Committee that all welds may be examined using the ultrasonic (UT) method in lieu of the radiographic (RT) method, provided that all of the following requirements are met:
N-659-2 (a) Examination Area
- 100% coverage (in all 4 directions)
- Surface examination (PT or MT)
S f Surface EExam A-B AB 1/2 1/2 A B C D PAUT Exam Volume A-B-C-D
N-659-2 (b) Examination Procedure
- PAUT with minimum of 40-70 degrees
- Volume scanned with 0 degree N 659 2 (c)
N-659-2 ( ) Procedure P d D Demonstrationt ti
- Demonstration for each nominal diameter and thickness
- Essential and non-essential requirements documented
N-659-2 (d) Qualification Blocks
- For each nominal diameter and thickness N-659-2 6 9 2 (e) ( ) Materials i l
- None; cast and austenitic products are not included N-659-2 (f) Examination Plan
- None; an exam plan and sketch will be provided
N-659-2 (g) Acceptance Criteria
N-659-2 (h) Pre-Service Examinations
- Pre-Service Examinations (PSE) will be performed, when required, in addition to the proposed PAUT examinations N-659-2 (i & j) Acquisition
- None, examinations will be auto (encoded) and recorded N-659-2 (k) Acquisition Personnel
None for acquisition personnel; they will be qualified and
- None, trained using the same demonstrated equipment
N-659-2 (k) Analysis Personnel
- They will demonstrate their capability to detect and characterize flaws; will utilized data acquired with the demonstrated procedure; and:
- Flawed grading units will be 1/4 longer than actual flaw
- Unflawed grading units will be a min of 1
- At least 2 of the flaws will meet N-659-2 (d) sizes
- Flaws will be sized as being >
actual length Fl
- Flaws will ill b be properly l
categorized as surface or subsurface
N-659-2 (l) ANII
- Additionall restrictions:
Additi t i ti
- None; review and acceptance of the ANII N 659 2 (m) Other Requirements N-659-2
- None; other related requirements will be met N-659-2 (n) Repairs
- None; flaws will be repaired and the weld re-examined N-659-2 (o) Code Case
- None; the Case number will be recorded
Process/Technique Validation
- PVNGS developed a set of actual weld flawed specimens
- Flaws totaled over 60 for Carbon Steel
- S Specimens i h have been b radiographed di h d for f comparison i
- Specimens are being digital radiographed for additional comparison
Process/Technique Validation Process/Technique Validation RESULTS
- PAUT detected all the RT indicated flaws
- PAUT detected several additional areas of incomplete fusion
- PAUT detected all of the cracks in the exam volume
14-100-CS SLAG RT ~1 length PAUT ~1 length
8-120-CS Incomplete Fusion RT ~1 intermittent PAUT ~1
~1 length
12-100-CS Incomplete Penetration RT ~ 3/4 length PAUT ~3/43/4 length
(~1.2 in other direction)
8-120-CS Porosity RT ~1 length PAUT ~1 length
10-60-CS ID Crack (PT)
RR 48 Summary
- Additional restrictions (requirements) to N-659-2:
- Automated (encoded) Phased Array Ultrasonic Examination
- All welds will receive a surface (PT or MT) examination
- Weld caps will be ground flush
- Volume will be scanned in all 4 directions
- Volume will be scanned with a 0 degree
- Demonstration for each nominal diameter and thickness
- Data will be recorded for analysis and retention
Conclusion RR 48 utilizes as a basis Code Case N-659-2 RR 48 requires additional restrictions RR 48 provides an acceptable level of quality and safety
