ASNT Level III consulting for ASME Section XI, 10 CFR 50 Appendix B and NQA-1 programs
Nuclear NDE is governed by ANSI/ASNT CP-189, not SNT-TC-1A. ASME Section XI Subarticle IWA-2300 requires personnel qualified under a written practice prepared to CP-189 as amended by the Code, and ultrasonic examiners must additionally pass performance demonstration under Mandatory Appendix VIII. Audit findings land on records — examination papers, vision currency, on-the-job training sign-off — under 10 CFR 50 Appendix B Criterion XVII.
Three document sets decide a nuclear NDE audit. First, the certification procedure, written to CP-189 in shall language and amended by ASME Section XI IWA-2300. Second, the performance demonstration file, which qualifies a procedure, an instrument set and a named examiner as one system under Mandatory Appendix VIII — Supplement 2 for austenitic piping welds, Supplement 3 for ferritic piping welds, Supplement 4 for the reactor vessel, Supplement 10 for dissimilar metal welds. Third, the quality assurance records package under 10 CFR 50 Appendix B Criterion XVII, where assessors spend most of their time because that is where the gaps sit. A Level III retained from outside can author the certification procedure, write and grade examinations, approve NDE procedures and sit through the audit. Employer certification of personnel remains the employer's signature, a boundary set out on what an outside NDT Level III can and cannot do.
Source: ANSI/ASNT CP-189; ASME BPVC Section XI Division 1, Subarticle IWA-2300 and Mandatory Appendix VIII (Supplements 2, 3, 4, 10); 10 CFR 50 Appendix B; 10 CFR 50.55a; ASME NQA-1 Part I Requirements 2 and 17, Part III Nonmandatory Appendix 17A-1; NRC Regulatory Guide 1.28.
| Record or document | What the assessor asks for | Governing clause or standard | Common defect |
|---|---|---|---|
| NDE certification procedure (written practice) | The controlling document for qualification of examination personnel, with Code amendments traceable clause by clause | ANSI/ASNT CP-189 as amended by ASME Section XI IWA-2300 | Written to SNT-TC-1A and modified for staffing convenience — a relaxation CP-189 does not permit |
| Certifying Level III credential | The ASNT NDT Level III certificate in the method behind each certification signature | ANSI/ASNT CP-189 (Level III certification requirement) | Employer appointment letter only; no ASNT certificate in the certified method |
| Performance demonstration records | Demonstration by supplement number, with the procedure revision it was run against and the expiry date | ASME Section XI Mandatory Appendix VIII, Supplements 2, 3, 4, 10 | Listed as a date with no supplement and no procedure revision, so the qualification cannot be tied to the work |
| Reactor vessel examination qualification | Evidence the clad-to-base-metal interface scope was covered by qualified procedure and personnel | ASME Section XI Appendix VIII Supplement 4 with NRC conditions in 10 CFR 50.55a | Supplement 4 qualification claimed without the four-direction interface coverage condition addressed |
| Examination papers and grading records | The general, specific and practical papers, the key, the pass mark and the grading sheet behind every certificate | 10 CFR 50 Appendix B Criterion XVII (Quality Assurance Records) | Papers discarded after grading; the certificate is the only surviving evidence of a test nobody can produce |
| Near vision and color perception records | Current examination dates for every examiner assigned to Code work | ANSI/ASNT CP-189 vision requirements | Near vision lapsed and discovered after the examiner is badged and inside an outage window |
| NDE procedures and revision history | Approval signature and date for the revision in force on the examination date | 10 CFR 50 Appendix B Criterion V (Instructions, Procedures and Drawings) | Field revision made for access or geometry, never routed back through Level III approval |
| On-the-job training log | Dated entries per method, signed by the supervising Level II or Level III | ASME NQA-1 Part I Requirement 2 (indoctrination and training) | A single total hours figure entered by the technician, unbroken by method or date, unsigned |
| Instrument, transducer and reference block control | Calibration status and control of every item used to make an acceptance decision | 10 CFR 50 Appendix B Criterion XII (Control of Measuring and Test Equipment) | Reference blocks and calibration standards held as consumables rather than controlled measuring equipment |
| Special process traceability record | A path from the examination report to the procedure revision and to the certification file effective that day | 10 CFR 50 Appendix B Criterion IX (Control of Special Processes) | Report identifies the technician by initials only; no link to the certification file version in force |
| NDE program audit record | Evidence the audit included observation of examination work in progress | 10 CFR 50 Appendix B Criterion XVIII (Audits) | Audit conducted entirely from files, with no assessor present during an examination |
The first file a nuclear assessor opens is the certification procedure
An assessor entering a nuclear NDE program asks for the document that controls how examination personnel are qualified before asking anything about ultrasonic technique. Inside an ASME Section XI scope that document is a certification procedure built on ANSI/ASNT CP-189. CP-189 is written in shall language and does not permit an employer to relax a mandatory requirement to suit its staffing. SNT-TC-1A is written in should language and expressly invites employer modification. A program that carries a modified SNT-TC-1A written practice into nuclear work has already generated a finding, and that finding sits at the top of the report because everything downstream inherits it.
ASME Section XI Subarticle IWA-2300 sets the second half of the requirement. Personnel performing nondestructive examination under Section XI are qualified and certified using a written practice prepared in accordance with CP-189 as amended by IWA-2300. The word amended is the part programs miss. The certification procedure has to present the CP-189 baseline and the Code amendments side by side, clause by clause, so an assessor can trace each one without reconstruction. Certifications issued earlier against SNT-TC-1A, ANSI N45.2.6 or a superseded CP-189 edition stay valid until recertification falls due, and the transition table proving that is itself an auditable record.
The third question is who signs. CP-189 requires the Level III certifying personnel in a method to hold an ASNT NDT Level III certificate in that method. An employer appointment letter alone does not carry it. Programs that grew out of a general industry background discover this at the worst possible moment — when a supplier audit asks for the certificate standing behind the signature on twenty certification files. Rebuilding those files afterwards is possible. Doing it during an audit response window with a plant already in outage is not how it should happen.
Appendix VIII qualifies a system, not a person
Performance demonstration entered the Code in the 1991 Addenda as Mandatory Appendix VIII, Performance Demonstration for Ultrasonic Examination Systems. It replaced prescriptive technique rules with proof of outcome. Appendix VIII qualifies personnel, equipment and procedure together as a single entity against specimens containing flaws of known size and condition. A technician holding a UT Level II certificate is not by that fact entitled to perform a Section XI examination in an Appendix VIII scope. The demonstration record is a separate artifact with its own expiry, and a nuclear assessor asks for it by supplement number.
The supplements divide the work by what is being examined. Supplement 2 covers austenitic piping welds, Supplement 3 ferritic piping welds, Supplement 4 the reactor vessel, and Supplement 10 dissimilar metal welds. NRC conditions written into 10 CFR 50.55a add to several of them. For Supplement 4 the clad-to-base-metal interface, including a minimum of 15 percent of wall thickness measured from that interface, is examined from four orthogonal directions using procedures and personnel qualified to that supplement. Utilities fund administration of these demonstrations collectively through the EPRI Performance Demonstration Initiative rather than each licensee building specimen sets alone.
For the employer's records the consequence is a linkage problem. Each demonstration is tied to the procedure revision it was run against. Revise the procedure and the link has to be re-established, or the qualification no longer covers the work being performed. Certification files listing Appendix VIII qualifications as a date with no supplement and no procedure revision collapse under a single question. That is one of the most common one-line findings a nuclear NDE program collects, and it is written without any technical dispute about the examination itself.
The Appendix B criteria that NDE findings land on
10 CFR 50 Appendix B names nondestructive testing directly. Criterion IX, Control of Special Processes, requires measures assuring that special processes including welding, heat treating and nondestructive testing are controlled and accomplished by qualified personnel using qualified procedures. That single sentence creates two evidence chains. The assessor traces an examination report back to the procedure revision in force on the examination date, and back to the certification file effective on that same date. Where either trace breaks, the finding is written against Criterion IX rather than against the examination result.
Criterion V, Instructions, Procedures and Drawings, catches procedure control. A field revision made to accommodate access, geometry or an unexpected surface condition, never routed back through Level III approval, is a Criterion V finding whether or not the examination was technically sound. Criterion XII, Control of Measuring and Test Equipment, covers instruments, cables, wedges, transducers and reference blocks. Reference blocks and calibration standards held as shop consumables rather than as controlled measuring equipment is a recurring gap in programs that migrated in from general industry practice.
Criterion XVII, Quality Assurance Records, carries the largest share of NDE findings. It requires records furnishing evidence of activities affecting quality and states that those records include qualifications of personnel, procedures and equipment. Criterion XVIII, Audits, then asks whether the NDE program was audited by observation of work in progress or only by reading files. An NDE audit conducted entirely at a desk, with no assessor standing behind a technician during an examination, is itself a finding against Criterion XVIII.
NQA-1 and the training record nobody signed
NRC Regulatory Guide 1.28 endorses ASME NQA-1, with clarifications and exceptions, for design and construction quality assurance programs; its recent revisions reach the 2017, 2019 and 2022 editions of the standard. Inside NQA-1 Part I, Requirement 2 covers the quality assurance program and carries indoctrination and training of personnel performing activities affecting quality. Requirement 17 covers quality assurance records. A supplier holding an NQA-1 program and performing NDE is audited against both, and the NDE personnel file is the intersection where the two requirements meet.
On-the-job training is the weakest record in the files Atlantis reviews. The pattern repeats without variation: a total hours figure written into the certification file, entered by the technician, never broken down by method, never broken down by date, and never signed by a supervising Level II or Level III. Under Requirement 2 that is not training evidence. The remedy is unglamorous — a dated log per method with a supervisor signature against each entry — and it must be built before the audit, because reconstructing it afterwards raises a records integrity question worse than the original gap.
Retention in a nuclear program is set by the quality assurance program itself, not by a universal number. NQA-1 distinguishes lifetime records from nonpermanent records, and Part III Nonmandatory Appendix 17A-1 lists the record types treated as lifetime. Where personnel certification files, examination papers and performance demonstration records sit in that split is a decision the program documents and defends. Programs that never made the decision explicit discover mid-audit that their own procedure supplies no retention basis for the files an assessor has just requested.
Where nuclear NDE findings actually concentrate
Across NDT audits the finding pattern is stable, and it is about records rather than technique. Four categories repeat. Vision examination currency lapsed. On-the-job training claimed but undocumented. Examination papers graded and then discarded, leaving a certificate as the only evidence of a test nobody can produce. And a written practice that never names the responsible Level III, so no individual is accountable for the certification decisions issued under it. None of the four requires an assessor to challenge a defect call.
Nuclear scope adds two more. Performance demonstration qualifications expiring inside an outage window, discovered when the examiner is already badged and on site. And procedure revisions that severed the link to the demonstration they were qualified against. Both are calendar problems wearing a technical disguise, and both close with one controlled matrix mapping every examiner against every supplement, every procedure revision and every expiry date, reviewed on a fixed cycle rather than reviewed when a job appears on the schedule.
This is why readiness work that concentrates on records closes more findings per hour than readiness work that rehearses technique. These findings are unambiguous, provable from paper, and closable only with new paper. An assessor writes them because they can be written quickly and defended completely. A program that has already closed them arrives at the audit with the assessor's easiest targets removed and the conversation forced onto ground where the technical work speaks for itself.
The outage window sets the real deadline
In-service inspection compresses into outage windows, and personnel qualification review compresses with it. Contractor examiner packages arriving three days before a window — each with its own written practice lineage, its own Appendix VIII history and its own vision test dates — is the standard failure mode. Receipt review of those packages is an inspection activity in its own right. It needs acceptance criteria written in advance, a named reviewer, and a disposition record, or the review becomes a signature on a stack nobody read.
The practical control is a pre-qualification gate run weeks ahead of mobilization. Each vendor submits certification files against a fixed checklist: certifying Level III credential and method, level and effective and expiry dates, near vision and color perception dates, examination records, on-the-job training log with signatures, and the supplement-by-supplement demonstration record naming the procedure revision. Files failing the checklist are returned before badging, not discovered afterwards by an assessor reading the same stack.
Running that gate is work an outsourced Level III absorbs cleanly, because it is review and disposition rather than employer certification. The reviewer reads files, writes acceptance or rejection with a stated reason, and hands the licensee or supplier a defensible record of the review performed. The certification decisions themselves stay with each contractor's own employer, which is exactly where CP-189 and the Code place them.
Examinations that can be produced on request
Examination papers are the record most often missing and the easiest to fix going forward. Under a CP-189 program the general, specific and practical examinations, the grading sheet, the pass mark and the answer key controls all sit inside the evidence chain behind a certificate. Retaining only the certificate leaves an assessor holding a conclusion with no basis under it. Under Criterion XVII that is a records finding, written without any argument about whether the individual is competent.
Question bank control is the second half of the problem. A bank circulating among candidates, or a practical examination administered by the person who delivered the training with no independence control, undermines the certification even where the paper exists. Written controls over authorship, custody, revision and retention separate a defensible examination program from a filing cabinet. The mechanism is set out in detail on NDT Level III exam oversight.
Where an outside Level III authors and grades examinations for an employer, the line between qualifying an individual and certifying that individual has to be written down in the certification procedure itself. That boundary — what an external Level III may sign and what only the employer may sign — is covered on what an outside NDT Level III can and cannot do.
How Atlantis works inside a nuclear program
Engagement starts with a gap assessment run against three documents at once: the CP-189 baseline, the IWA-2300 amendments applicable to your Code edition, and the Appendix B criteria your quality assurance program commits to. Every personnel file is read against the certification procedure that was in force on the date each certification was issued, not against the current revision. That distinction produces a finding list an assessor would produce, ordered by how quickly each item closes.
Remediation rebuilds the artifacts in sequence: certification procedure first, because everything inherits from it; then the personnel certification files; then the on-the-job training logs with supervisor signatures; then the examination bank with custody and retention controls; then the examiner-to-supplement-to-procedure-revision matrix that keeps Appendix VIII qualifications traceable through revisions. Calibration and reference standard registers close alongside, under Criterion XII.
Continuing support runs as a retained arrangement — the Level III of record for procedure approval and examination oversight, quarterly file review, a mock audit ahead of the assessment, and a record system that produces requested documents in minutes rather than days. Atlantis is ASNT Level III certified across multiple methods and builds the supporting record tooling as part of the engagement. Scope and retainer structure are described on outsourced NDT Level III consulting; request a quote for your Code edition and method scope.
Does nuclear NDT use SNT-TC-1A or CP-189?
CP-189. ASME Section XI IWA-2300 requires NDE personnel qualified and certified under a written practice prepared in accordance with ANSI/ASNT CP-189 as amended by the Code. CP-189 is written in shall language and does not permit an employer to relax a mandatory requirement. SNT-TC-1A is written in should language and invites employer modification, which is why a modified SNT-TC-1A written practice generates a finding in nuclear scope.
What is ASME Section XI Appendix VIII performance demonstration?
Mandatory Appendix VIII, Performance Demonstration for Ultrasonic Examination Systems, entered the Code in the 1991 Addenda. It qualifies procedure, equipment and personnel together as one system against specimens containing flaws of known condition, replacing prescriptive technique rules with proof of outcome. Supplement 2 covers austenitic piping welds, Supplement 3 ferritic piping welds, Supplement 4 the reactor vessel and Supplement 10 dissimilar metal welds.
Who can act as the Level III for a 10 CFR 50 Appendix B program?
An individual holding an ASNT NDT Level III certificate in the method, working under a certification procedure the employer has adopted. That individual may be an employee or retained from outside. Where the Level III is retained, the employer evaluates the outside organization and remains accountable for the certification decisions issued under its own procedure.
What NDE records does an NQA-1 audit ask for?
The certification procedure, personnel certification files with examination papers and grading, dated and signed on-the-job training logs, vision examination records, NDE procedure approval history, calibration records for instruments and reference standards, and the audit record itself. NQA-1 Part I Requirement 2 drives the training evidence and Requirement 17 drives records control and retention.
Does an outsourced Level III satisfy a nuclear supplier audit?
Yes, where the arrangement is documented and the employer evaluates the outside organization. The retained Level III authors the certification procedure, writes and grades examinations, approves NDE procedures, reviews contractor personnel packages and attends the audit. Employer certification of the employer's own personnel is issued by the employer. Scope and boundaries are covered on outsourced NDT Level III consulting.
What are the most common NDE findings in a nuclear supplier audit?
Lapsed vision examinations, on-the-job training claimed without dated signed entries, examination papers destroyed after grading, a written practice that names no responsible Level III, performance demonstration expiring inside an outage window, and procedure revisions issued without re-establishing the link to the demonstration they were qualified against. Every one of these closes with paper, not with technical argument.