Brakes - Brake cylinders/units for air brakes - General conditions for certification and use

This IRS contains the general conditions to be met by brake cylinders/units for use with compressed air brakes. It describes the geometry and functional requirements for general/specific applications.

Definitions, test methods and pass/fail criteria to be performed appear in the IRS.

This IRS also describes the procedure for issuing a UIC seal of approval / label for brake cylinders/units, and related tests and acceptance criteria in conformity with the prescription of UIC Leaflet 541-00.

This UIC procedure is intended to usefully apply the expertise of UIC experts in assessing braking components for the award of a UIC seal of approval / label. In order to avoid duplication of work, this certificate may then be used by accredited or notified bodies to underpin their own work.

UIC issued seals of approval/ labels are not attached to a specific use of a brake cylinder/unit on a particular vehicle.

It integrates in full or in part the following UIC leaflets:

- UIC Leaflet 541-01, 1st edition, March 2017

It complements the following standards:

- None

The following IRSs constitute a complementary series:

- 541 series - Brakes