PD CEN/TR 17039:2017

What is PD CEN/TR 17039 - Technical Report about the revision of EN 14363 about?

PD CEN/TR 17039 is a standard that discusses technical reports about the revision of EN 14363 for railway applications to obtain reliable results that are comparable to other test laboratories. PD CEN/TR 17039 outlines EN 14363, which contains a lot of requirements that were modified during the last revision. It was found in the working group, that many decisions that were taken to formulate these modifications need to be documented to improve understanding. And to allow a later further development if the practice of applications shows the necessity.

Under PD CEN/TR 17039:2017 the work for the revision was organized into 8 subgroups. Many of these subgroups recorded the way to the proposals in reporting templates, which were used for the editing work. Afterward, the discussion was ongoing in WG 10 and the inquiry process.

This available data needs to be summarised and presented in a common format to allow people not involved in the discussions to understand the background of the modifications.

Who is PD CEN/TR 17039 - Technical Report about the revision of EN 14363 for?

PD CEN/TR 17039 on the technical reports about the revision of EN 14363 is useful for:

• Regulatory authorities
• Test centers

Why should you use PD CEN/TR 17039 - Technical Report about the revision of EN 14363?

It was found that the old wording needed clarification: “Testing for acceptance of vehicles is based on some reference conditions of the track. If these are not respected on certain lines, appropriate measures will be taken (speed modifications, additional tests, etc.).” The discussion in WG 10 showed that it was not possible to specify the underlying reference conditions by exact boundaries. The only way for clarification was to:

• State that all vehicles which were successfully assessed can be operated on tracks complying with EN 13803
• Describe the current state of the art to allow the EIM (European Infrastructure Managers) to continue to use their implemented process for operation under demanding track conditions in the future (for example on lines with curve radii below 250 m)

PD CEN/TR 17039 guideline assists you with fault modes, load conditions for testing, first stage assessment, statistical analysis, multiple regression, recalculation of Y/Q, track loading parameters, replacing of limit values of ride characteristics by informative guidance for assessment, track geometric quality and coordination with WG 28, contact conditions, special vehicles, simulation, an extension of acceptance, topics discussed but postponed for future revisions, and influence of the revision of EN 14363 on current TSIs for technical reports about the revision of EN 14363 for railway applications.

This assists to standardize the minimum safety parameters and provide proper methods to assess the safety against derailment on twisted tracks. In addition, to obtain reliable results that are comparable to other test centres.