What is BS EN 16729-4-Qualification of personnel for NDT on rails about?  
BS EN 16729-4 is the fourth part of the multi-series that defines the requirements for qualification of the personnel who plan, carry out and supervise non-destructive testing in the industrial sector – Railway maintenance infrastructure, on rails in switches, crossings and plain track.
Note: Safety of staff working on or near the railway track is part of the infrastructure manager safety management system and is not part of BS EN 16729-4.
This document applies only to rail profiles meeting the requirements of EN 13674-1 and EN 13674-2.
Who is BS EN 16729-4- Qualification of personnel for NDT on rails for? 
BS EN 16729-4 on nondestructive testing on rails is useful for: 
- Railway management authorities
- Train operating companies (TOC)s
- Inspection and testing department in railways 
- Mechanical engineers
- Regulatory authorities
- Certification bodies
Why should you use BS EN 16729-4- Qualification of personnel for NDT on rails?  
To ensure railway applications and overall infrastructure of the rail industry meets the necessary performance requirements, NDT testing can help determine flaws and defects on rail before complete failure occurs. However, it requires a skilled and qualified personnel to undertake the testing to accurately establish integrity of the track system.
BS EN 16729-4 was developed to provide a method of evaluating and recording the competence of employees whose tasks necessitate a suitable theoretical and practical understanding of the non-destructive tests they perform, specify, supervise, monitor, or evaluate.
Overall, complying with qualification assessment guidance by BS EN 16729-4 can ensure the personnel performing the NDT on rails in the track is best suited for the job.
