The prescriptions contained in RIC par. 43 and those in UIC- leaflet 563, both issued on 1st January 1962, deal with the conditions to be met by water supply systems for RIC-coaches in respect of their liability to freezing. These prescriptions are not in accordance with each other and, in the opinion of the ORE B 30 Specialists Committee, they do not entirely allow either for the demands of the passengers nor for those pertaining to operation. Therefore, a new text of the above prescriptions is suggested. The conditions to be fulfilled for the technical realisation of these proposals have been investigated. During this it has become apparent that unheated passenger coaches may be left, without any heating of the water, in the open air for periods up to 12 hours, even at a temperature of -20 degrees C, when merely taking simple measures to ensure an adequate insulation. As the measures to achieve this insulation can, generally speaking, be applied to coaches of older designs, it is suggested that from a certain date, still to be fixed, only such RIC-coaches should be accepted in which the water need not be drained when these coaches are left unheated in the open air for periods up to 12 hours. The heating of the water for toilets and lavatories is then not required in order to protect the water tank against freezing. It is however recommendable both for reasons connected with comfort and to prevent the formation of ice in the drain pipes of the water supply devices. The methods of heating the water adopted so far are summarised. A test procedure which can be applied in the Vienna testing installation is described; this will make it possible to determine, in future, whether passenger coaches meet the conditions for the water supply systems for toilets and lavatories as proposed in this report. The theoretical cooling curves of the water at the various initial conditions occurring in practice were plotted by the Bundesbahn-Versuchsanstalt Minden (Westph.) by means of an analogue computer. The original report of this research organisation has been appended to the report. The theoretically determined cooling curves, reproduced in this report, will in due course be supplemented by results which have been obtained during practical tests made in the Vienna Test Installation.

  • Supplemental Notes:
    • Restrictions on the use of this document are contained in the explanatory material.
  • Corporate Authors:

    International Union of Railways

    Office of Research and Experiments
    Utrecht,   Netherlands 
  • Publication Date: 1963-6

Media Info

  • Features: Appendices;
  • Pagination: 13 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00053058
  • Record Type: Publication
  • Source Agency: International Union of Railways
  • Report/Paper Numbers: B30/RP 14/E Intrm Rpt.
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM