What is PD CEN/TR 15654‑3 about?
PD CEN/TR 15654 is a series of standards on railway applications that provides approval and verification procedures on track measurement for rail vehicles helping users to achieve metrologically traceable and reproducible measurement results.
PD CEN/TR 15654‑3 is the third part of the PD CEN/TR 15654 series of documents that provides technical requirements and the metrological characteristics of a system for measuring and evaluating a range of vehicle loading parameters during operation in service.
The goal is to obtain the comparability and reproducibility of measurement results under different boundary conditions. To minimize the number of tests, the approval and verification procedures are divided into:
- Type approval
- Initial verification
- In-service verification.
The accuracy class of a measurement system depends on the measurement device, vehicle, and track characteristics. Test procedures covering these influences are described to ensure reproducibility in all networks.
NOTE: The procedures described in PD CEN/TR 15654‑3 do not impose any restrictions on the design of measurement sites, on the types of vehicles that can be monitored, or on which networks or lines the measuring system can be installed.
Who is PD CEN/TR 15654‑3 for?
PD CEN/TR 15654‑3 on railway wheels and wheelsets is useful for:
- Railway engineers
- Manufacturers of railway wheels and wheelsets
Why should you use PD CEN/TR 15654‑3?
The railway track should be maintained properly in order to enable trains to run safely at the highest permissible speeds and to provide passengers with a reasonable level of comfort during the ride.
PD CEN/TR 15654‑3 gives approval and verification tests, test coverage, and actions if verification is outside the accuracy class to validate the technical requirements and metrological performance characteristics (e.g. accuracy classes) under a variety of operating conditions.
PD CEN/TR 15654‑3 provides type approval tests consisting of laboratory and on-site tests.
The initial verification test is given to demonstrate that the system operates within the initial verification accuracy class. Thus, giving verification procedures for metrological characteristics and in-service verification to ensure that the system meets the in-service inspection accuracy class.
The reference test methods assist the metrological traceability of the measured and derived quantities. There are two different methods:
- Static reference
- Dynamic reference
Overall, PD CEN/TR 15654‑3 helps with the track measurement and maintenance test methods taking into account time and labour consumption, range of geometric data, measurement equipment cost, reliability, and accuracy of surveying procedure helps in reducing operating costs and fuel consumption. A well-maintained track offers a safe and comfortable journey to passengers.
