§ Standards
Status
CURRENT
Last verified
2026-09-06
ASNT · INDUSTRY BEST PRACTICE
ASNT SNT-TC-1A
Recommended Practice for Personnel Qualification and Certification in NDT
Overview
What this standard covers
The employer-based NDT personnel certification framework used across US fabrication and inspection.
The employer-based NDT personnel certification framework used across US fabrication and inspection.
Who uses it
Inspection bodies, NDT technicians and quality engineers agreeing methods and acceptance levels.
Details
Reference data
- Standard number
- ASNT SNT-TC-1A
- Title
- Recommended Practice for Personnel Qualification and Certification in NDT
- Organisation
- ASNT
- Country
- United States
- Region
- United States
- Subject
- Inspection & NDT
- Subcategory
- Personnel
- Type
- INDUSTRY BEST PRACTICE
- Application
- Guidance
- Availability
- Paid
- Status
- CURRENT
- Roles
- inspection standard
- Last verified
- 2026-09-06
Official source: asnt.org
Related
Standards used alongside this one
- BS EN ISO 9712
Non-destructive testing — Qualification and certification of NDT personnel
Levels 1, 2 and 3 certification of NDT personnel — the reason an inspection report must state the operator's certification.
United KingdomInspection & NDTCURRENTPaid
- ASTM E165
Standard Practice for Liquid Penetrant Testing
US liquid penetrant examination practice for surface breaking discontinuities.
United StatesInspection & NDTCURRENTPaid
- ASTM E709
Standard Guide for Magnetic Particle Testing
US practice for magnetic particle examination of ferromagnetic materials and welds.
United StatesInspection & NDTCURRENTPaid
- BS EN ISO 11666
Non-destructive testing of welds — Ultrasonic testing acceptance levels
Acceptance levels 2 and 3 applied to ultrasonic indications in welded joints.
United KingdomInspection & NDTCURRENTPaid
- BS EN ISO 17636-1
Non-destructive testing of welds — Radiographic testing with film techniques
Radiographic examination of fusion welds using film, including exposure arrangements and image quality requirements.
United KingdomInspection & NDTCURRENTPaid
- BS EN ISO 17637
Non-destructive testing of welds — Visual testing of fusion-welded joints
How visual examination of welds is carried out, including lighting, access and the recording of results — the first inspection on every job.
United KingdomInspection & NDTCURRENTPaid
Sourcing, review and use
Status
Editorial reference information compiled and maintained by the StructuralSteel.ai team. It is not a design certificate and is not issued under an engineer's seal.
Last reviewed
Calculations
Any figures produced on this page are indicative estimates for early sizing and comparison only — they are not engineered design outputs.
References
Final member selection, loading, connection design, fire design, fabrication and compliance must be verified for your specific project by a suitably qualified structural engineer. Standards are revised; check the edition in force where the work is built.
Verification
StructuralSteel.ai provides technical reference information and links to authoritative sources. Project specifications, applicable legislation, current standards editions and requirements of the responsible engineer or authority should always be verified before fabrication or supply.