BS 4504-3.3:1989
Types of flanges from PN 6 to PN 40 and in sizes up to DN 1800. Facings, dimensions tolerances, bolt sizes, marking and materials for bolting and flange materials with associated pressure/temperature ratings.
References to documents that provides an enhanced understanding of the Codes, Standards and Regulations landscape. References to documents such as documents in draft stage or documents that have been archived are available for information and support the development of future Codes, Standards and Regulations.
Types of flanges from PN 6 to PN 40 and in sizes up to DN 1800. Facings, dimensions tolerances, bolt sizes, marking and materials for bolting and flange materials with associated pressure/temperature ratings.
Approval stage
Scope
Description: Traction power systems experience some of the most extreme variations in local power loads as compared to most other large scale electric power supply networks. These variations create challenges in the construction of reliable electric power delivery systems and in the performance of the rolling stock dependent on power supplied by the system.
A method for defining the electrical load supplied by a nickel-cadmium battery and for sizing the battery to supply that load is described in this recommended practice.
Description: The electrical interfaces among the components comprising the auxiliary power systems and their electrical interface with other train-borne systems are described.
This project aims at the standardization of the microgrid design and planning process, the technical requirement specification of microgrid design and the evaluation of the microgrid planning scheme. The implementation of the proposed recommended practice will enhance the safe, reliable and economic operation of microgrid.