BS 750 2012 Specification for underground fire hydrants and surface box frames and covers.pdf

BS750:2012 BSI Standards Publication Specification for underground fire hydrants and surface box frames and covers NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW raisina standards worldwide TM BSi t Prowided by IHS under icense with BSI-Uncontrolled Copy No reproduction or networking wthout ioense from IHS Not for Fosale BS750:2012 BRITISH STANDARD Publishing and copyright information The BSI copyright notice displayed in this document indicates when the document was last issued. @The British Standards Institution 2012 Published by BSI Standards Limited 2012 ISBN9780580747144 ICS13.220.10 The following BSI references relate to the work on this standard: Committee reference FSH/17/8 Draft for ment 11/30243193 DC Publication history First published August 1937 First revision January 1950 Second revision August 1964 Third revision February 1977 Fourth revision January 1984 Fifth revision September 2006 Sixth revision (present) September 2012 Amendments issued since publication Date Text affected Coovriaht British Standards Provided by IHS under icense with BSI-Uncontrolled Copy No reproduction or networking permitted wihout ioonse from IHS Not for Resale BRITISH STANDARD BS750:2012 Contents Foreword ii Introduction 1 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Fire hydrants 3 5 Outlets 6 6 Stem drive 7 7 Draining system 7 8 Coating 7 9 Maintenance of water purity (potable water systems only)9 10 Type requirements 9 11 Fire hydrant assembly resistance to internal pressure of the shell and of all pressure containing ponents and resistance of the obturator to differential pressure 11 12 Hydrostatic test certificate 11 13 Marking and additional data 11 14 Surface box frames and covers 11 15 Marking 15 16 Type requirements 15 17 Production requirements 16 18 Test certificate 16 Annexes Annex A (normative)Type tests for strength security and endurance 17 Annex B(normative)Type hydrostatic tests for screwed outlets 19 Annex C(n...