AS 2118 6 1995 automatic fire sprinkler systems combined s

Title AS 2118.6-1995 Automatic fire sprinkler systems - Combined sprinkler and hydrant Licensee Licensed to LUU MINH LUAN on 25 Feb 2002 Conditions of use This is a licensed electronic copy of a document where copyright is owned or managed by Standards Australia International Your licence is a single user licence and the document may not be stored, transferred or otherwise distributed on a network You may also make one paper copy of this document if required Web Check-up Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 2118.6—1995 Australian Standard  Automatic fire sprinkler systems Part 6: Combined sprinkler and hydrant Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited This Australian Standard was prepared by Committee FP/4, Automatic Sprinkler Installations It was approved on behalf of the Council of Standards Australia on 14 March 1995 and published on July 1995 The following interests are represented on Committee FP/4: Asset Services, Department of Administrative Services Australian Building Codes Board Australian Chamber of Commerce and Industry Australian Chamber of Manufactures Australian Fire Authorities Council Australian Fire Protection Association Australian Water and Sewerage Authorities Commonwealth Fire Board CSIRO — Division of Building, Construction and Engineering Department of Defence Fire Protection Industry Association of Australia Institution of Engineers, Australia Insurance Council of Australia Master Plumbers and Mechanical Services Association of Victoria Melbourne Water New Zealand Fire Equipment Association Telecom Australia The Association of Consulting Engineers, Australia Review of Australian Standards To keep abreast of progress in industry, Australian Standards are subject to periodic review and are kept up to date by the issue of amendments or new editions as necessary It is important therefore that Standards users ensure that they are in possession of the latest ed ition, and any amendments thereto Full details of all Australian Standards and related publications will be found in the Standards Australia Catalogue of Publications; this information is supplemented each month by the magazine ‘The Australian Standard’, which subscribing members receive, and which gives details of new publications, new editions and amendments, and of withdrawn Standards Suggestions for improvements to Australian Standards, addressed to the head office of Standards Australia, are welcomed Notification of any inaccuracy or ambiguity found in an Australian Standard should be made without delay in order that the matter may be investigated and appropriate action taken This Standard was issued in draft form for comment as DR 93292 AS 2118.6—1995 Australian Standard  Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Automatic fire sprinkler systems Part 6: Combined sprinkler and hydrant PUBLISHED BY STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA) THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 7262 9753 AS 2118.6 — 1995 PREFACE This Standard was prepared by the joint Standards Australia/Standards New Zealand Committee on Automatic Sprinkler Installations to be Part of AS 2118 It is the result of a consensus among representatives on the joint committee to produce it as an Australian Standard The revision to AS 2118 includes Standards Australia’s requirements to keep product and installation Standards separate When complete the series will comprise: Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 2118 4118 Automatic fire sprinkler systems Part 1: Standard Part 2: Wall wetting sprinklers (Drenchers) Part 3: Deluge Part 4: Residential Part 5: Domestic Part 6: Combined sprinkler and hydrant Part 9: Piping support and installation Part 10: Approval documentation Fire Part Part Part Part Part Part Part Part Part sprinkler systems 1.1: Components — Sprinklers and sprayers 1.2: Components — Alarm valves (wet) 1.3: Components — Water monitors 1.4: Components — Valve monitors 1.5: Components — Deluge and pre-action valves 1.6: Components — Stop valves and non-return valves 1.7: Components — Alarm valves (dry) 1.8: Components — Pressure reducing valves 1.9: Accelerators and exhausters Part 2.1: Piping — General The terms ‘normative’ and ‘informative’ have been used in this Standard to define the application of the appendix to which they apply A ‘normative’ appendix is an integral part of a Standard, whereas an ‘informative’ appendix is only for information and guidance  Copyright STANDARDS AUSTRALIA Users of Standards are reminded that copyright subsists in all Standards Australia publications and software Except where the Copyright Act allows and except where provided for below no publications or software produced by Standards Australia may be reproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in writing from Standards Australia Permission may be conditional on an appropriate royalty payment Requests for permission and information on commercial software royalties should be directed to the head office of Standards Australia Standards Australia will permit up to 10 percent of the technical content pages of a Standard to be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Australia Standards Australia will also permit the inclusion of its copyright material in computer software programs for no royalty payment provided such programs are used exclusively in-house by the creators of the programs Care should be taken to ensure that material used is from the current edition of the Standard and that it is updated whenever the Standard is amended or revised The number and date of the Standard should therefore be clearly identified The use of material in print form or in computer software programs to be used commercially, with or without payment, or in commercial contracts is subject to the payment of a royalty This policy may be varied by Standards Australia at any time AS 2118.6 — 1995 CONTENTS Page Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited SECTION SCOPE AND GENERAL 1.1 SCOPE 1.2 NEW DESIGNS AND INNOVATIONS 1.3 REFERENCED DOCUMENTS 1.4 DEFINITIONS 4 4 SECTION SYSTEM REQUIREMENTS 2.1 GENERAL 2.2 LOCATION AND ACCESS TO SPRINKLER CONTROL ASSEMBLIES 2.3 LOCATION AND ACCESS TO FIRE MAIN ISOLATION VALVES 2.4 ACCESS TO FIRE HYDRANTS 2.5 PROTECTION OF SUPPLY PIPING 2.6 FIRE MAIN (RING) RETICULATION 2.7 PRESSURE REDUCING VALVES 2.8 WATER SUPPLIES 2.9 FIRE SERVICE BOOSTER 2.10 FIRE ALARM INITIATION 2.11 FIRE ALARM CIRCUITS 2.12 MONITORING OF ISOLATING VALVES 5 5 5 6 6 SECTION PIPES, VALVES AND FITTINGS 3.1 GENERAL 3.2 VALVES 8 SECTION TESTING 4.1 GENERAL 4.2 PRE-TEST PREPARATION 4.3 HYDROSTATIC TEST 4.4 FLOW TESTS 4.5 RECORDING OF TEST RESULTS 8 8 APPENDICES A REFERENCED DOCUMENTS B LOCATION OF FIRE HYDRANTS AND SPRINKLER CONTROL C SYSTEM PHILOSOPHY D SYSTEM RESISTANCE CURVE FOR COMBINED SPRINKLER AND HYDRANT SYSTEMS E WIRING SYSTEMS RATING F TYPICAL SPRINKLER CONTROL ASSEMBLIES AND PRESSURE CONTROL STATIONS First published as AS 2118.6 — 1995 VALVES 10 13 18 20 22 AS 2118.6—1995 STANDARDS AUSTRALIA Australian Standard Automatic fire sprinkler systems Part 6: Combined sprinkler and hydrant S E C T I O N S C O P E A N D G E N E R A L Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 1.1 SCOPE This Standard sets out the minimum requirements for the installation, commissioning and testing of a combined sprinkler and hydrant system, for installation in multistorey buildings as an alternative option to using separate sprinkler and hydrant systems, or separate sprinkler and hydrant installations utilizing a combined fire main (see AS 2118.1) 1.2 NEW DESIGNS AND INNOVATIONS Any alternative materials, designs, methods of assembly, procedures and similar that not comply with the specific requirements of this Standard, or are not mentioned in it, but give the equivalent results to those specified are not necessarily prohibited 1.3 REFERENCED DOCUMENTS Appendix A A list of referenced documents is given in 1.4 DEFINITIONS For the purpose of this Standard the definitions given in AS 2118.1, AS 2419.1, AS 2484.1, AS 2484.2, AS 3500.0 and that below apply 1.4.1 Combined system — an integrated system of sprinkler and fire hydrant reticulation where the sprinkler system is fed from a fire main designed to supply the concurrent water requirements of both the sprinkler and hydrant system COPYRIGHT S E C T I O N S Y S T E M AS 2118.6—1995 R E Q U I R E M E N T S 2.1 GENERAL Except as modified by this Standard, combined systems shall comply with the requirements of AS 2118.1, AS 2419.1 and AS 2941 2.2 LOCATION AND ACCESS TO SPRINKLER CONTROL ASSEMBLIES Sprinkler control assemblies shall be located within — (a) a common fire-rated exit; or (b) a fire-rated room directly accessible from the common fire-rated exit Sprinkler isolation valves shall be located on each storey A ‘Sprinkler Stop Valve Inside’ wall plate shall be affixed externally to the egress door of the common fire-rated exit where it discharges to a public place or open area (see Appendix B, for examples of required valve locations) Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 2.3 LOCATION AND ACCESS TO FIRE MAIN ISOLATION VALVES Access to any fire main isolation valve shall be from within a fire-rated exit (stairway) or a fire-rated room directly accessible from the fire-rated exit 2.4 ACCESS TO FIRE HYDRANTS enclosure Fire hydrants shall not be located within a locked Hydrants, where located in an enclosure, shall remain accessible at all times 2.5 PROTECTION OF SUPPLY PIPING Piping between the source of water supply and the ring main/s shall be subject to the fire resistance and mechanical protection requirements of AS 2118.1 and AS 2419.1 2.6 FIRE MAIN (RING) RETICULATION 2.6.1 Pipe sizing Piping to which sprinkler installations and fire hydrants are directly connected shall be reticulated through the building in the form of ring mains (one ring for each pressure zone) Piping shall be sized by hydraulic calculation (see AS 2118.1) subject to the following minimum pipe diameters — (a) in buildings not exceeding 25 m effective height DN 100 (b) in buildings exceeding 25 m effective height DN 150 The vertical portions of the ring main pipes shall be located within separate fire-rated exits (stairways) or fire-rated riser shafts In the case of adjoining pressure zones, which not share a common horizontal cross connection, each cross connection shall be located within its own pressure zone 2.6.2 Pressure zones Separate pressure zones shall be provided where — (a) the pressure at any sprinkler head exceeds the limitations imposed by AS 2118.1; (b) the pressure at any fire hydrant exceeds the limitations imposed by AS 2419.1; or (c) the effective height of the building exceeds 50 m The number of pressure zones shall not be less than one for each 50 m rise in building height COPYRIGHT AS 2118.6—1995 2.6.3 Isolation valves that — Each pressure zone shall incorporate isolation valves arranged so (a) not less than 75% of fire hydrants in that zone; and (b) not less than 50% of fire hydrants at each floor level; can remain operable upon isolation in any fire main (ring) section between valves NOTE: See Appendix C, Figures C3 to C5 for typical schematic system configurations Isolation valves shall be located such that not more than four storeys of sprinklers would be isolated 2.7 PRESSURE REDUCING VALVES Where pressure reducing valves are incorporated they shall be provided with an isolating valve on each side of the pressure reducing valve 2.8 WATER SUPPLIES 2.8.1 Combined system water flow rate The combined system water flow rate shall be the aggregate of the fire hydrant requirement, in accordance with AS 2419, and the sprinkler requirement, in accordance with AS 2118.1, taken at the hydraulically most favourable location determined in accordance with Appendix D Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 2.8.2 (a) Source of water supply The system water supply shall be sourced from — two separate on-site storage tanks, each tank being not less than 50% of the combined capacity which is sufficient to provide water to the combined fire hydrant and sprinkler system for the duration required by AS 2419.1 and AS 2118.1 NOTE: The tanks may be located at high or low level and pumps shall be fitted as required (b) two town mains which form part of an interconnected town mains system, each of the town mains being capable of providing water to the installation at the necessary pressure and flow to permit proper operation, either with or without pumps, having stop valves so arranged that in the event of a breakdown, anywhere in the system, at least one of the mains to the installation can remain operative (c) one town main and one on-site storage tank each of which shall be capable, with pumps installed if necessary, of providing water at the necessary pressure and flow for proper operation of the combined installation 2.8.3 Fire mains (feed) A separate fire main (feed) shall be connected to each zone, or where a cascade system using pressure reducing arrangements is used, duplicate fire mains (feed) shall be connected to the highest zone 2.9 FIRE SERVICE BOOSTER Each zone shall be equipped with a booster facility for the connection of a fire authority pump appliance The booster facility shall comply with the requirements of AS 2419.1 2.10 FIRE ALARM INITIATION The sprinkler fire alarm shall be initiated in accordance with the requirements of AS 2118.1 2.11 FIRE ALARM CIRCUITS Each fire alarm initiating device shall be wired to a Fire Indicator Panel (FIP) constructed in accordance with AS 1603.4 The sprinkler alarm on each floor shall provide a separate indication at the FIP, clearly identified as a sprinkler alarm for that particular floor Sprinkler fire alarm transmission from the FIP to the local fire authority shall be via a dedicated landline Where the FIP contains other detection systems they shall be connected to the local fire authority in accordance with the requirements of AS 1670 COPYRIGHT AS 2118.6—1995 Wiring between each switch and the FIP shall be in fire-rated wiring, having a system performance of at least WS52W, in accordance with AS 3013 (see Appendix E) 2.12 MONITORING OF ISOLATING VALVES Each sprinkler isolation valve, fire main isolation valve or any valve capable of isolating the water supply to the system, excluding valves under the control of the water authority, shall be monitored separately at the FIP Monitors shall comply with the requirements of AS 2118.1 and AS 2419.1 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Wiring between each switch and the FIP shall be in fire-rated wiring, having a system performance of at least WS52W, in accordance with AS 3013 COPYRIGHT APPENDIX AS 2118.6—1995 A REFERENCED DOCUMENTS (Normative) Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 1603 1603.4 Automatic fire detection and alarm systems Part 4: Control and indicating equipment 1670 Automatic fire detection and alarm systems — System design, installation and commissioning 2118 2118.1 Automatic Fire Sprinkler Systems Part 1: Standard 2419 2419.1 Fire hydrant installations Part 1: System design, installation and commissioning 2484 2484.1 2484.2 Fire—Glossary of terms Part 1: Fire tests Fire protection and firefighting equipment 2941 Fixed fire protection installations—Pumpset systems 3013 Electrical installations—Wiring systems for specific applications 3500 3500.0 National Plumbing and Drainage Code Part 0: Glossary of terms 4118 4118 4118 4118 4118 Fire Part Part Part Part 1.2 1.4 1.6 1.8 Sprinkler Systems 1.2: Components—Alarm valves (wet) 1.4: Components—Valve monitors 1.6: Components—Stop valves and non-return valves 1.8: Components—Pressure reducing valves COPYRIGHT AS 2118.6—1995 10 APPENDIX B LOCATION OF FIRE HYDRANTS AND SPRINKLER CONTROL VALVES Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited (Normative) FIGURE B1 LEGEND OF SYMBOLS COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 11 FIGURE B2 LOCATION OF FIRE HYDRANT AND SPRINKLER CONTROL ASSEMBLIES COPYRIGHT AS 2118.6—1995 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 2118.6—1995 12 FIGURE B3 SPRINKLER CONTROL ASSEMBLIES LOCATED WITHIN NOMINATED STAIR COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 13 APPENDIX FIGURE C1 COPYRIGHT AS 2118.6—1995 C SYSTEM PHILOSOPHY (Informative) SOURCE OF WATER SUPPLY (SIMPLIFIED) Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 2118.6—1995 14 FIGURE C2 SYSTEM COMPONENT TERMINOLOGY COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 15 FIGURE C3 ZONE PRESSURE CONTROL — SCHEME COPYRIGHT AS 2118.6—1995 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 2118.6—1995 16 FIGURE C4 ZONE PRESSURE CONTROL — SCHEME COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 17 FIGURE C5 ZONE PRESSURE CONTROL—SCHEME COPYRIGHT AS 2118.6—1995 AS 2118.6—1995 18 APPENDIX D SYSTEM RESISTANCE CURVE FOR COMBINED SPRINKLER AND HYDRANT SYSTEMS (Normative) D1 SCOPE This Appendix sets out the method for determining system resistance curves for combined sprinkler and hydrant systems D2 SYSTEM RESISTANCE CURVE EQUATIONS determination of the system curves are as follows: The equations to be used for the For sprinkler only operation Ks Qs (P s P 1)0.5 For hydrant only operation Kh Qh P h 0.5 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited where Ks = constant for the sprinkler system Qs = maximum calculated flow rate required for the sprinkler system (in accordance with the requirements of AS 2118) Ps = pressure at the ‘sprinkler’ connection to the combined sprinkler/hydrant riser to maintain Qs above P1 = pressure equivalent of the height of the hydraulically disadvantaged sprinkler array above the ‘hydrant’ connection to the combined sprinkler/hydrant riser Kh = constant for the hydrant system Qh = required flow rate for the specified number of hydrants Ph pressure at the ‘hydrant’ connection to the combined sprinkler/hydrant riser to maintain Qh above = System resistance curves can be plotted using the following equations: For the sprinkler system For the hydrant system The resistance curve for the combined sprinkler and hydrant systems is obtained by plotting the sum of the sprinkler and hydrant flows at common pressures See Figure D1 The pressure requirements at the pump discharge is the sum of the required combined system pressure, P and P4 COPYRIGHT 19 AS 2118.6—1995 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited where: P3 = pressure equivalent of the height above the pump centre line of the highest sprinkler in the hydraulically most disadvantaged array P4 = pressure loss due to friction in the combined riser, from the pump discharge to the ‘sprinkler’ connection calculated at the required combined system flow rate FIGURE D1 TYPICAL PRESSURE/FLOW CURVES FOR PUMPS COPYRIGHT AS 2118.6—1995 20 APPENDIX E WIRING SYSTEMS RATING (Normative) E1 PROTECTION AGAINST EXPOSURE TO FIRE All wiring systems associated with the operation of combined sprinkler and hydrant systems shall have a protection against exposure to fire rating of not less than 120 This rating is represented as WS5XW E2 PROTECTION AGAINST MECHANICAL DAMAGE Protection against mechanical damage shall be provided as listed below The areas indicated should not be considered as a rigid list to be adhered to with no deviations, rather they should be considered as a guide to the types of areas and causes of damage to be encountered Details of ways to achieve the grade of protection can be found in AS 3013 WS5X — Areas where physical damage is considered to be unlikely Examples of these areas are— (a) masonry riser shafts with strictly limited access; Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited (b) non-trafficable ceiling void areas; (c) inaccessible underfloor areas; (d) internal domestic and office situations where cabling is mounted on walls at heights above 1.5 m WS51 —Areas where physical damage by light impact is considered possible Examples of these areas are— (a) internal domestic or office situations where cable is mounted on walls at heights below 1.5 m; and (b) trafficable ceiling void areas where access to building services for maintenance purposes is required WS52 — Areas where physical damage by impact from manually propelled vehicle is possible Examples of these areas are— (a) passageways and storerooms in domestic, office and commercial locations where hand trucks and barrows may be used, and cables are mounted at a height of less than 1.5 m; (b) plant rooms where only minor equipment is installed; and (c) workshops where repair and maintenance, on small equipment and furniture or the like is carried out, and cables are mounted at a height of less than 2.0 m WS53 — Areas where physical damage by impact from light vehicles is possible Examples of these areas are— (a) car parks and driveways where cars and other light vehicles are present and cables are mounted at a height of less than 2.0 m; (b) display areas of items such as white goods, furniture and cars where cabling is mounted at a height of less than 2.0 m; and (c) storage areas where manually operated devices, such as pallet trucks, may be operated and cables are mounted at a height of less than 2.5 m COPYRIGHT 21 AS 2118.6—1995 WS54 — Areas where physical impact from vehicles with rigid frames or rigid objects, the weight of which does not exceed 2.0 t, is possible Examples of these areas are— (a) small delivery docks where the cabling is mounted below a height of 3.0 m (b) warehouses with pallet storage up to 3.0 m and use of forklift trucks; and (c) heavy vehicle workshops WS55 — Areas were physical damage from impact by laden vehicles or objects the laden weight of which exceeds 2.0 t Examples of these areas are— (a) loading and delivery docks; (b) fabrication and maintenance areas for medium to heavy engineering; and (c) large high pile storage warehouses with forklift trucks Where any WS cabling traverses areas of various protection requirement, and it is neither viable nor practicable to change the degree of protection at the transition points, the installed cabling shall comply with the highest requirement of protection Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited E3 PROTECTION AGAINST HOSING WITH WATER Where the wiring system is required to maintain its integrity after exposure to fire and subsequent hosing with water, it shall have the suffix W appended to its rating, i.e WS5XW COPYRIGHT AS 2118.6—1995 22 APPENDIX F TYPICAL SPRINKLER CONTROL ASSEMBLIES AND PRESSURE CONTROL STATIONS Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited (Normative) FIGURE F1 TYPICAL SPRINKLER CONTROL ASSEMBLY COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 23 FIGURE F2 TYPICAL PRESSURE REDUCING STATION COPYRIGHT AS 2118.6—1995 ... requirements of AS 2118.1, AS 2419.1 and AS 2941 2.2 LOCATION AND ACCESS TO SPRINKLER CONTROL ASSEMBLIES Sprinkler control assemblies shall be located within — (a) a common fire- rated exit; or (b) a fire- rated... system resistance curves for combined sprinkler and hydrant systems D2 SYSTEM RESISTANCE CURVE EQUATIONS determination of the system curves are as follows: The equations to be used for the For sprinkler. .. Automatic fire detection and alarm systems — System design, installation and commissioning 2118 2118.1 Automatic Fire Sprinkler Systems Part 1: Standard 2419 2419.1 Fire hydrant installations