AS 1851 6 1997 maintenance of fire protection equipment

Title AS 1851.6-1997 Maintenance of fire protection equipment - Management procedures for maintaining the fire and smoke control features of air-handling systems 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 AS 1851.6—1997 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Australian Standard Maintenance of fire protection equipment Part 6: Management procedures for maintaining the fire and smoke control features of air-handling systems This Australian Standard was prepared by Committee ME/62, Ventilation and Airconditioning It was approved on behalf of the Council of Standards Australia on May 1997 and published on June 1997 The following interests are represented on Committee ME/62: Air Conditioning and Mechanical Contractors Association of Australia Air-conditioning of Australia and Refrigeration Equipment Manufacturers Association Australian Building Codes Board Australian Fire Authorities Council Australian Institute of Building Surveyors Australian Institute of Environmental Health Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Australian Institute of Refrigeration, Air Conditioning and Heating Chartered Institution of Building Services Engineers Department of Contract and Management Services, W.A Fire Protection Industry Association of Australia Institution of Refrigeration Heating and Airconditioning Engineers, New Zealand Insurance Council of Australia Metal Trades Industry Association of Australia Plastics and Chemicals Industry Association Property Council of Australia Thermal Insulation Contractors Association of Australia WORKS Australia, Department of Administrative Services Review of Australian Standards To keep abreast of progress in industry, Australi an 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 editi on, and any amendments thereto Full detail s of all Australian Standards and related publications will be found in the Standards Australi a Catalogue of Publi cations; this information is supplemented each month by the magazine ‘The Australian Standard’, which subscribing members receive, and which gives detail s 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 wit hout delay in order that the matter may be investigated and appropriate action taken This Standard was issued in draft form for comment as DR 95419 AS 1851.6—1997 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Australian Standard Maintenance of fire protection equipment Part 6: Management procedures for maintaining the fire and smoke control features of air-handling systems Originated as AS 1851.6 —1983 Second edition 1997 PUBLISHED BY STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA) THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 7337 1209 AS 1851.6 — 1997 PREFACE This Standard was prepared by Joint Standards Australia/Standards New Zealand Committee ME/62, Ventilation and Airconditioning, to supersede AS 1851.6— 1983 This Standard is the result of a consensus among representatives of the Joint Committee to produce it as an Australian Standard The objective of this document is to provide a Standardized basis for the maintenance of the fire and smoke control features of air-handling systems for use by system owners and maintainers The fire-precaution features of air-handling systems in buildings not only need to be designed, installed, commissioned and operated in accordance with AS 1668.1 — 1991, The use of mechanical ventilation and air-conditioning in buildings , Part 1: Fire and smoke control, but also need to be maintained at an adequate level of performance to ensure their availability in an emergency, hence safeguarding the occupants and minimizing property damage Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited In the preparation of this Standard, consideration was given to the following: (a) Poor management being the cause for the failure of a large number of maintenance programs associated with building services (b) Air-handling systems being designed to suit the requirements of individual buildings, which implies that the detailed maintenance required varies from system to system (c) Maintenance procedures having to be sufficiently flexible to take account of the particular features of an item of equipment and the environment in which it is installed (d) Unnecessary attention being as detrimental as insufficient maintenance in certain cases (e) Potential cost implications (f) Requirements for systems integrity testing Accordingly, this Standard is aimed at the management aspect of maintenance programs Mandatory requirements for simple inspections are laid down For initiating more complex inspections and corrective actions, appropriate routines are suggested The term ‘informative’ has been used in this Standard to define the application of the appendix to which it applies An ‘informative’ appendix is only for information and guidance  Copyright STANDARDS AUSTRALIA Users of Standards are reminded that copyright subsists in all Standards Australi a publications and software Except where the Copyri ght Act allows and except where provided for below no publications or soft ware produced by Standards Australi a may be reproduced, stored in a retri eval system in any form or transmitt ed by any means wit hout prior permission in wri ti ng from Standards Austr alia Permission may be conditi onal on an appropriate royalt y payment Requests for permission and information on commercial soft ware royalt ies should be dir ected to the head off ice of Standards Australi a Standards Austr alia wil l 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 Austr alia Standards Austr alia will also permit the inclusion of its copyri ght material in computer soft ware 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 edit ion 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 identif ied The use of materi al in pri nt form or in computer soft ware programs to be used commercially, wit h or wit hout payment, or in commercial contr acts is subject to the payment of a royalt y This policy may be varied by Standards Australi a at any ti me 3 AS 1851.6 — 1997 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 APPLICATION 1.3 REFERENCED DOCUMENTS 1.4 DEFINITIONS 4 SECTION MAINTENANCE PROGRAM 2.1 GENERAL 2.2 IMPLEMENTATION 2.3 FOLLOW-UP ACTION 6 SECTION MAINTENANCE ROUTINES 3.1 GENERAL 3.2 LEVELS OF MAINTENANCE 3.3 FREQUENCY 3.4 PERFORMANCE MEASUREMENTS 7 SECTION MAINTENANCE DOCUMENTATION 4.1 GENERAL 4.2 OPERATING AND MAINTENANCE MANUALS 4.3 MAINTENANCE SCHEDULE 4.4 PLANT REGISTER 4.5 PLANT HISTORY RECORD 4.6 MAINTENANCE RECORDS 10 4.7 AVAILABILITY OF MANUALS AND RECORDS 10 4.8 EVIDENCE OF COMPLIANCE 10 APPENDICES A RECOMMENDED FREQUENCIES OR CONDITIONS FOR LEVELS 2, AND ROUTINES 11 B TYPICAL INSPECTION AND MAINTENANCE ROUTINES 12 AS 1851.6 — 1997 STANDARDS AUSTRALIA Australian Standard Maintenance of fire protection equipment Part 6: Management procedures for maintaining the fire and smoke control features of air-handling systems S E C T I O N S CO P E A N D G E NE R A L 1.1 SCOPE This Standard specifies management procedures for controlling the inspection and testing of required fire and smoke control features associated with air-handling systems in buildings, to ensure their effective availability Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited NOTES: The procedures set out in this Standard and all consequential corrective actions, preferably, should be carried out, or at least be supervised, by competent personnel In the assessing of the need for corrective action, regard should be given to the various factors which may affect the precise performance from day to day For this reason, critical limits of performance will need to be known In this context a critical limit sets the level of a performance characteristic beyond which its effect could become detrimental to life safety It is recommended that the management system developed for the maintenance of the fireprecaution features of the air-handling systems is integrated with the management systems developed for other associated building services such as lifts, smoke detection systems, fire suppression systems and emergency power systems to create an integrated maintenance management system 1.2 APPLICATION This Standard applies to scheduled periodic maintenance procedures following completion of satisfactory commissioning or recommissioning tests for all fire-precaution features of air-handling systems which come within the scope of AS 1668.1 It is not intended to be applied to commissioning or recommissioning tests, although it may be used as a basis for such tests where appropriate NOTE: Mandatory requirements for the frequency of simple inspections are laid down as Level routines Informative recommendations for more complex and detailed inspections are laid down as Levels 2, and routines 1.3 REFERENCED DOCUMENTS The following documents are referred to in this Standard: AS 1668 1668.1 The use of mechanical ventilation and air-conditioning in buildings Part 1: Fire and smoke control 1851 1851.3 1851.5 1851.7 1851.8 1851.10 Maintenance of fire protection equipment Part 3: Automatic fire sprinklers Part 5: Automatic smoke/heat venting systems Part 7: Fire-resistant doorsets Part 8: Automatic fire detection and alarm systems Part 10: Emergency warning and intercommunication systems COPYRIGHT AS 2676 AS 1851.6 — 1997 2676.1 2676.2 Guide to the installation, maintenance, testing and replacement of secondary batteries in buildings Part 1: Vented cells Part 2: Sealed cells NZS 4512 Fire alarm systems in buildings 1.4 DEFINITIONS For the purpose of this Standard, the definitions given in AS 1668.1 and the following apply: 1.4.1 Automatic activation — testing by alarm actuation of a smoke or thermal detector, sprinkler flow/pressure switch, manual call point or other initiating field device providing control to the system, with the system in its automatic mode 1.4.2 Competent person —a person who has had appropriate training or practical experience (or both) in the subject, sufficient to provide safe and satisfactory performance Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 1.4.3 Maintenance — that regular routine activity aimed at preserving the operational standard and cleanness of equipment It may include inspection, repair, preventive service and cleaning 1.4.4 Maintenance program —the assembly of relevant data and the setting out of a formal strategy and recording system for the effective management of a series of maintenance procedures 1.4.5 Maintenance report — a written communication, giving details of the physical and operational state of a piece of equipment when maintenance is carried out, which is sent to the building owner or authorized agent 1.4.6 Simulated activation —testing by operation of test switches either locally to equipment or from the fire fan control panel or from the master smoke control system panel 1.4.7 Specified performance — the performance specified in the documentation against which the installation was approved 1.4.8 Testing — operational checking (which may include measurements) to ascertain the level of performance of an air-handling item, plant or system for the purpose of maintaining its specified performance Other types of testing such as production or commissioning testing are excluded from this definition COPYRIGHT AS 1851.6 — 1997 S E C T I O N M AI N T E N AN C E P R O G R A M 2.1 GENERAL A maintenance program shall be prepared and it shall include the assembly of relevant data and the setting down of a formal strategy and recording system for effective management of a series of maintenance procedures 2.2 IMPLEMENTATION Implementation of a maintenance program shall be as detailed in Sections and The maintenance program shall be designed and initiated with data obtained from full commissioning or recommissioning tests in accordance with AS 1668.1 or from full Level routines in accordance with this Standard NOTE: It is recommended that maintenance programs are coordinated with other trades and attention is drawn to the requirements of AS 1851.3, AS 1851.5, AS 1851.7, AS 1851.8 and AS 1851.10 and NZS 4512 2.3 FOLLOW-UP ACTION Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 2.3.1 General All maintenance records shall be examined regularly and action shall be initiated where the need for remedial works is identified by the building owner or authorized agent 2.3.2 Programming Where a Level inspection (see Section 3) indicates a malfunction of any sort, appropriate action at Level 2, Level or Level shall be initiated immediately regardless of the timing for the selected action in the maintenance schedule 2.3.3 Corrective action The corrective action shall be carried out with all reasonable expedition to ensure that the safety features are maintained at optimum performance and availability levels 2.3.4 Recommissioning Where under a Level routine a major component or system is rebuilt or replaced, the item concerned shall be subject to a full recommissioning test 2.3.5 Updating of records All plant records, operational diagrams and ‘as installed’ drawings as required by Section shall be kept up-to-date COPYRIGHT S E C T I O N AS 1851.6 — 1997 M AI N T E N AN C E R O U T I N ES 3.1 GENERAL Detailed maintenance instructions comprising inspection, testing and preventative action shall be prepared by a competent person for each relevant component of the air-handling system(s) 3.2 LEVELS OF MAINTENANCE Inspection, testing and other maintenance routines shall be conducted at four levels as follows: (a) Level Functional checks by means of sensory inspection such as sight, touch, hearing or smell Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited NOTE: Diagnostic procedures are deemed to be an acceptable form of inspection (b) Level Level plus cleaning, lubrication, simple routine maintenance and adjustment which does not necessitate taking the equipment out of service (c) Level Level plus testing and measurement procedures with consequential adjustments as necessary to ensure optimum effective performance These routines may require equipment to be taken out of service, but will generally enable rapid reinstatement if the need arises (d) Level Overhaul and test procedures which will normally necessitate an item being taken out of service, possibly for prolonged periods As a general rule, these routines are necessary only for the correction of defects found during Level routines and are not necessarily carried out at specified intervals NOTE: Typical routines are illustrated in Appendix B 3.3 FREQUENCY 3.3.1 Level routines in Table 3.1 unless — (a) (b) Level routines shall be carried out at the frequencies set out the regulatory authority— (i) approves a lower frequency; or (ii) requires a higher frequency; or the building owner or authorized agent desires to carry out these routines more frequently NOTES: Operating conditions frequencies or environmental Changes of frequencies may be approved on the basis of information provided from performance based maintenance and monitoring systems 3.3.2 Levels 2, and routines indicated by— factors would normally dictate changes of Levels 2, and routines should be carried out as (a) the results of Level routines (see Clause 2.3); or (b) one of the following, in the order of preference hereunder: (i) Manufacturer’s recommendations (ii) Appendix A recommendations (iii) Information from performance monitoring systems COPYRIGHT AS 1851.6 — 1997 TABLE 3.1 FREQUENCIES FOR LEVEL ROUTINES Item Fans Motors, induction Batteries for fire/smoke control services Routine* Frequency† Supply and return air B2 Monthly Smoke-spill‡ and air-pressurization B2 Quarterly Fan drives, frequent use B3 Monthly Fan drives, test and emergency use only B3 Quarterly Vented cells See AS 2676.1/NZS 4512 Sealed cells See AS 2676.2/NZS 4512 Fire dampers (including intumescent dampers) B4 Yearly§ Fire mode air dampers for smoke-spill, fresh air and recycle air, complete with their automatic gear B5 Half-yearly Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Automatic smoke detectors for fire/smoke control services See AS 1851.8/NZS 4512 Air filters B6 Monthly Electric duct heaters B7 Yearly Kitchen exhaust systems B8 Monthly Air-handling changeover under fire/smoke conditions B9 Quarterly Fire-isolated escape routes protected by air-pressurization systems B10 Quarterly Automatic smoke/heat venting systems See AS 1851.5 * This refers to maintenance routines described in Appendix B, unless otherwise indicated † In cases where systems include required items of plant and equipment not included in this table, the frequencies shall be to the approval of the regulatory authority ‡ This refers to dedicated smoke-spill fans Return-air fans doubling as smoke-spill fans are treated as return-air fans § 20% of the total, so that all fire dampers have been covered at the end of the fifth inspection 3.4 PERFORMANCE MEASUREMENTS For Level and Level routines, the techniques of performance measurement shall be such as will — (a) ensure reliable consistency of the results of measurement; (b) permit sound assessment of the measurement results for compliance with relevant health and safety criteria; and (c) enable meaningful comparison with the corresponding measurement result of the commissioning or recommissioning tests NOTE: To achieve the foregoing it is necessary to use instruments and techniques compatible with the tolerances and performance applicable to any particular item COPYRIGHT AS 1851.6 — 1997 S E C T I O N M AI N T E N AN C E D O C U M E N T A T I O N 4.1 GENERAL Documentation required to implement the maintenance program (see Section 2) shall include operating and maintenance manuals, a maintenance schedule, plant register, plant history sheet and diagram(s) of the installation The documents shall be maintained, up-to-date and kept in a secure place NOTE: Attention is drawn to the requirements of AS 1668.1 relating to the purpose, location and updating of operating instructions and diagrams of the installation 4.2 OPERATING AND MAINTENANCE MANUALS Operating and maintenance manuals shall be provided for all plant, equipment and systems which are the subject of this Standard Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Operating and maintenance manuals shall include at least the following: (a) Physical details of the plant, equipment and systems (b) Supplier’s recommendations on maintenance and management (c) Recommended cleaning methods and dismantling instructions (d) Operating and shut-down procedures (e) Particulars of the maintenance program 4.3 MAINTENANCE SCHEDULE The maintenance schedule shall list all required items of plant and equipment and operational features to be subjected to the maintenance routines described in this Standard It shall include the frequencies at which the relevant levels of routines are to be carried out 4.4 PLANT REGISTER The plant register shall list all items of plant and equipment which require inspection as a prerequisite to maintenance, and shall describe their locations within the building If not already incorporated in the operating and maintenance manuals, the plant register shall include design data and unit capacities in sufficient detail to order a replacement of equivalent performance Each item of plant and equipment in the plant register shall be allocated an identity reference The identity reference allocated shall be unique within the building concerned and shall be indicated on the diagram(s) NOTES: Generally, an auxiliary item incorporated within the parent equipment need not be allocated a separate identity reference For ease of identification, the marking of items of plant and equipment with allocated identity references is recommended 4.5 PLANT HISTORY RECORD The plant history record shall be used to record details of the performance (test results) of each item at commissioning or any subsequent recommissioning At subsequent inspections and tests the results shall be recorded and compared with the results achieved at commissioning or any subsequent recommissioning Any defects observed and any repairs and modifications effected shall be recorded in the plant history record COPYRIGHT AS 1851.6 — 1997 10 4.6 MAINTENANCE RECORDS Up-to-date maintenance reports, plant history records and log books shall be provided for all plant, equipment and systems which are the subject of this Standard Maintenance records shall contain at least the following information: (a) Date, item of plant, equipment or system and nature of service performed (b) Details of defects found and rectification procedure undertaken (c) The name of the person or company performing the service 4.7 AVAILABILITY OF MANUALS AND RECORDS Operating and maintenance manuals and maintenance records shall be readily available for inspection by authorized personnel upon request For the purpose of maintenance management, the maintenance records shall be retained for a minimum period of five years NOTE: Maintenance records, design data and records of unit capacities should be retained for the life of the equipment Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 4.8 EVIDENCE OF COMPLIANCE Records that are required to be kept (see Clause 4.7) shall provide evidence of compliance with this Standard COPYRIGHT 11 AS 1851.6 — 1997 APPENDIX A RECOMMENDED FREQUENCIES OR CONDITIONS FOR LEVELS 2, AND ROUTINES (Informative) Fans Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Motors, induction Batt eries for fi re/smoke control services Frequencies or conditi ons Routine * Level Level Supply and return air B2 Quarterl y Yearly Only if inspecti on indicates necessit y Smoke-spil l† and air pressuri zati on B2 Yearly Yearly Only if inspecti on indicated necessit y Fan dri ves, frequent use B3 Quarterl y Yearly Only if inspecti on indicates necessit y Fan dri ves, test and emergency use only B3 Half -yearl y Two-yearly Only if inspecti on indicates necessit y Item Level Vented cells See AS 2676.1/NZS 4512 Sealed cell s See AS 2676.2/NZS 4512 Fire dampers B4 Five-yearl y N/A Only if inspecti on indicates necessit y Fire mode air dampers for smoke-spill , fresh air and recycle air, complete with their automati c gear B5 Yearly N/A Only if inspecti on indicates necessit y Automati c smoke detectors for fir e/smoke control services See AS 1851.8/NZS 4512 Air fil ters B6 N/A Yearly Only if inspecti on indicates necessit y Electr ic duct heaters B7 Two-yearly Five-yearl y Only if inspecti on indicates necessit y Kitchen exhaust systems B8 As requir ed‡ Yearly Only if inspecti on indicates necessit y Air- handli ng changeover under fi re/smoke condit ions B9 Yearly N/A Only if inspecti on indicates necessit y Fire-i solated escape routes protected by airpressuri zati on systems B10 Yearly Two-yearly Only if inspecti on indicates necessit y Automati c smoke/heat venti ng systems Outdoor air intakes See AS 1851.5 B11 Monthly N/A Level 1* This refers to maintenance routines descri bed in Appendix B † This refers to dedicated smoke-spil l fans Return-air fans doubling as smoke-spil l fans are tr eated as return-air fans ‡ Owing to the wide vari ation in usage, the fr equency of this routi ne is subject to the requir ements of the regulatory authorit y This is a case where a Level routi ne may be more frequent than a Level in certain circumstances COPYRIGHT AS 1851.6 — 1997 12 APPENDIX B TYPICAL INSPECTION AND MAINTENANCE ROUTINES (Informative) B1 GENERAL The routines in this Appendix have been prepared to provide examples of typical procedures which may be followed by management for specific items of an air-handling system However, where more than one set of routines contain similar requirements, such requirements should be regarded as being satisfied concurrently NOTE: Follow up action should be instigated by the building owner or authorized agent B2 FANS Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited B2.1 Level following: The action items required for a Level routine should include the (a) Check bearings for noise and overheating (b) Check fans for excessive vibration (c) Check guards and other safety features for satisfactory condition (d) Check fan belts for wear (e) Check flexible connections, where fitted, for leaks, tearing or fraying B2.2 Level following: The action items required for a Level routine should include the (a) Check lubrication of bearings and apply as necessary (b) Check fan belts for correct tension (c) Check couplings for tightness (d) On fan energization, operation and de-energization, check that the flexible connections are not overstressed owing to fan movement B2.3 Level following: The action items required for a Level routine should include the (a) Check pulley wheels for alignment (b) Check couplings for alignment (c) Verify that fan output meets design requirements B2.4 Level following: The action items required for a Level routine should include the (a) Check casing and impeller for corrosion and treat as necessary (b) Check balance of impeller if work carried out on it (c) Check lubrication of bearings and apply as necessary (d) Check fan belts if applicable (e) Check reassembled unit for excessive vibration (f) Check that guards and other safety features are satisfactory (g) Check for correct rotation (h) Measure and record fan output (i) Repair or replace flexible connections as necessary COPYRIGHT 13 B3 MOTORS, INDUCTION B3.1 Level following: The action items required for a Level routine should include the (a) Check for noisy running (b) Check for excessive vibration (c) Check for excessive heating B3.2 Level following: The action items required for a Level routine should include the (a) Check that external ventilation airways are clear (b) Apply lubrication if necessary B3.3 Level following: (a) AS 1851.6 — 1997 The action items required for a Level routine should include the Measure and record insulation resistance of stator windings Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited NOTE: Manufacturer’s cautionary notes should be observed especially where solid state devices are used (b) Measure and record running current (c) Check starter, protection settings, contacts and terminals where appropriate B3.4 Level following: The action items required for a Level routine should include the (a) Overhaul or replace with exchange unit (b) Measure and record thermistor resistances where fitted (c) Test run (d) Measure and record insulation resistance of stator windings B4 FIRE DAMPERS B4.1 Level following: The action items required for a Level routine should include the (a) Inspect for obstructions (b) Confirm position correct NOTE: Inspect 20% of the total so that all fire dampers have been covered at the end of the fifth inspection B4.2 Level The action items required for a Level routine should include the following: (a) Check for corrosion (b) Check that mounting is sound (c) Check that integrity of fire wall is not impaired where applicable (d) Check correct operation (excluding intumescent fire dampers) (e) Restore to correct position (excluding intumescent fire dampers) B4.3 Level Not applicable B4.4 Level Replace as appropriate COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 1851.6 — 1997 14 B5 FIRE MODE AIR DAMPERS FOR SMOKE-SPILL, FRESH AIR AND RECYCLE AIR, COMPLETE WITH THEIR AUTOMATIC CONTROL GEAR B5.1 Level The action items required for a Level routine should include the following: (a) Inspect for obstructions (b) Ensure drive force is available from the motors B5.2 Level The action items required for a Level routine should include the following: (a) Ensure damper(s) moves to its fire mode position upon removal of power source (b) Check that there is no excessive leakage past dampers when in the closed position (c) Check and adjust all motor drive linkages and ensure no ‘slippage’ or excessive hysteresis is occurring (d) Check linkage and damper bearings and lubricate as necessary (e) Ensure that any damper position indicators are operational and correctly positioned where fitted (f) If motors are pneumatic, check for air leaks in the air lines and connections (g) If control system is pneumatic, check for correct operation of air compressors, filters, dryers and pressure reducing systems B5.3 Level Not applicable B5.4 Level Replace as appropriate B6 AIR FILTERS B6.1 Level The action items required for a Level routine should include the following: (a) Inspect upstream and downstream of the filter and remove any large items obstructing the air flow (b) Check filter integrity (filter sealing) and any signs of filter deterioration B6.2 Level Not applicable B6.3 Level The action items required for a Level routine should include the following: (a) Check the pressure differential across the filter against the filter manufacturer’s instruction (b) Check that any adhesive liquid or coating being used has been supplied in a container indicating a certified flashpoint not less than 160°C B6.4 Level The action items required for a Level routine should include the following: (a) Replace filters as per manufacturer’s instructions (b) Renew any liquid and recoat any coating using an adhesive with a certified flashpoint not less than 160°C Replace any fabric with correct type or wash as appropriate B7 ELECTRIC DUCT HEATERS B7.1 Level The action items required for a Level routine should include the following: (a) Check the outside surface of the heater casing for discolouration or any indication that overheating has taken place (b) Check for any loose external connections and fittings COPYRIGHT 15 B7.2 Level following: AS 1851.6 — 1997 The action items required for a Level routine should include the (a) Check for any loose internal thermal insulation (b) Check the elements for obstructions and accumulation of foreign matter (c) Check that the heater switches off upon switching off the fan (d) Check operation of airflow sensing device by simulating loss of airflow (e) Check operation of over-temperature cutout by simulating overheating of the heater bank B7.3 Level Not applicable B7.4 Level Repair or replace as necessary B8 KITCHEN EXHAUST SYSTEMS NOTE: Fire protection or suppression systems installed within kitchen exhaust systems may have special requirements Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited B8.1 Level following: The action items required for a Level routine should include the (a) Check grease-arresting filters for excessive grease accumulation (b) Check hood and its exhaust plenum for excessive grease accumulation (c) Check that grease-arresting filters are secured in position and free of damage (d) Check grease gutters for any excessive grease accumulation B8.2 Level Clean grease-arresting filters NOTE: Owing to the wide variation in usage, the frequency of this routine is subject to the requirements of the regulatory authority This is a case where a Level routine may be more frequent than a Level in some circumstances B8.3 Level following: The action items required for a Level routine should include the (a) Clean hood and its exhaust plenum (b) Check for excessive air leaks at grease-arresting filters (c) Check duct for accumulated grease and clean it B8.4 B9 Level Replace any damaged grease-arresting filters AIR-HANDLING CHANGEOVER UNDER FIRE/SMOKE CONDITIONS NOTES: These routines are to ensure satisfactory changeover and operation of the air-handling installation The maintenance of the equipment such as fans, motors, fire dampers and similar are covered under the routines for the individual items Arrangements should be made for the Fire Brigade to be notified whenever an automatic activation test is to be conducted to advise that the alarm will sound and to advise that the system may be inoperative for a certain time B9.1 Level following: (a) The action items required for a Level routine should include the Simulate fire/smoke situation (for each system when separate) to effect changeover or shutdown as appropriate NOTE: The purpose of a simulated testing routine is to check the functioning of the air-handling changeover system complete with its associated dedicated smoke detector COPYRIGHT AS 1851.6 — 1997 16 circuits and not the detectors themselves It is not recommended practice in this case to simulate the fire/smoke situation by bringing a heat, flame or smoke source up to the detectors (b) Switch system back to ‘normal’ and check that all equipment is in the correct designated mode (c) Check that appropriate indicating lights signify normal operation B9.2 Level The action items required for a Level routine should include the following which should be checked during automatic activation of fire/smoke conditions: (a) Each item of equipment and any associated indicators have operated correctly and that fans are running or are shut down in accordance with the correct operational sequence for the air-handling system(s) concerned (b) Motorized outside-air, recycle-air, air-control and spill-air dampers and their associated motors are operating correctly (c) Operation of the manual switch provided for fire brigade personnel de-energizes supply-air fans (d) The system performance criteria of zone smoke control systems should be verified between each zone Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited NOTES: Where there have been no changes to the building structure, internal layout and air-handling system in the period since the last test, approval may be given to testing less than all zones Where approval is given to testing a proportion of zones a representative number of zones should be tested Test zones should be selected at the extremes of the system performance criteria When testing is carried out on a proportional number of zones basis it is recommended that the same zones be selected and tested each time The purpose of an automatic testing routine is to check the functioning of the air-handling changeover system by the activation of a field device It is recommended practice in this case to bring a heat, flame or smoke source to the detector or to flow water and reduce pressure to operate flow/pressure switches Some buildings may have standby power generation provisions which are required to operate fire and smoke control equipment and controls in the event of a normal power failure Level routine maintenance should therefore also include testing under standby power to verify fire mode performance B9.3 Level B9.4 Level following: Not applicable The action items required for a Level routine should include the (a) Adjust or repair as necessary (b) Carry out the Level routines B1 FI R E - I SO LA TE D E SC A P E PRESSURIZATION SYSTEMS B10.1 Level following: R OU TE S PR OT EC TE D BY A IR - The action items required for a Level routine should include the (a) Simulate initiation of operation of all systems (b) While all air-pressurization systems are operating, check the following for each system: (i) Excessive noise (Refer AS 1668.1.) (ii) Ease of opening doors COPYRIGHT 17 (iii) AS 1851.6 — 1997 Movement of air from each pressurized area through a selected open door NOTES: In order to assess the performance of the system, it is recommended that the same door be used every time The use of an elementary sensing device, e.g ribbon, is sufficient (c) Switch all systems back to normal B10.2 Level following: (a) Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited (b) The action items required for a Level routine should include the Check that the fans of all air-pressurization systems start under automatic activation when— (i) the building fire alarm is actuated by the automatic fire sprinkler system of the building, or by any smoke or thermal alarm group forming part of the building automatic fire detection system; (ii) any recycle-air sensor group, or any supply-air sensor group is actuated; and (iii) any recycle-air sensor group and any supply-air sensor group are actuated With all air-pressurization and other systems, required to operate in the fire mode, operating simultaneously, measure and record for each air-pressurization system — (i) the average flowrate through a selected open door, when the doors leading from every stairway to two selected successive storeys and the main discharge doors are fully open simultaneously; NOTE: In order to assess the performance of the system, it is recommended that the same door and the same measuring technique be used every time (c) (ii) the force required to open each door; (iii) the time taken for conditions found in Items (i) and (ii) above to be restored after opening and reclosing up to three doors; and (iv) the noise level at doorways identified as subject to the highest noise level, at the relevant points of entry into fire-isolated escape routes, with the associated door open Check that when the smoke sensor group of any air-pressurization system is automatically actuated, the associated pressurization fan is shut down NOTE: Any fan starting and stopping checks under Items (a) and (b) above should be carried out in such a manner as will avoid overheating of motors due to excessively frequent starts (d) Check that operation of the manual switch provided for fire brigade personnel de-energizes fans supplying air to the pressurized fire-isolated escape routes B10.3 Level following: (a) The action items required for a Level routine should include the Simulate activation of all air-pressurization and other systems required to operate in the fire mode When operating simultaneously, measure and record the following for every door: (i) Ambient noise level (ii) Door opening force (iii) Air velocity through door NOTES: Where there have been no changes to the building structure, internal layout and airhandling system in the period since the last test, approval may be given to testing less COPYRIGHT AS 1851.6 — 1997 18 than all doors Where approval is given to testing a proportion of doors a representative number of doors should be tested Test doors should be selected at the extremes of the system performance criteria i.e high noise level, high opening force and low air velocity When testing is carried out on a proportional number of doors basis it is recommended that the same doors be selected and tested each time (b) With all air-pressurization and other systems operating simultaneously, check that any specific air relief is fully operational and enables the required air flow from pressurized areas to be sustained B10.4 Level Repair or replace any items not capable of being adjusted for satisfactory performance B11 B11.1 OUTDOOR AIR INTAKES Level B11.2 Level following: Not applicable The action items required for a Level routine should include the Remove any combustible material from the vicinity of the intakes (b) Check intake louvres for corrosion and damage (c) Check and clean insect screens, replace if damaged Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited (a) COPYRIGHT ... air-conditioning in buildings Part 1: Fire and smoke control 1851 1851.3 1851. 5 1851. 7 1851. 8 1851. 10 Maintenance of fire protection equipment Part 3: Automatic fire sprinklers Part 5: Automatic... Part 7: Fire- resistant doorsets Part 8: Automatic fire detection and alarm systems Part 10: Emergency warning and intercommunication systems COPYRIGHT AS 267 6 AS 1851. 6 — 1997 267 6.1 267 6.2 Guide... Australian Standard Maintenance of fire protection equipment Part 6: Management procedures for maintaining the fire and smoke control features of air-handling systems Originated as AS 1851. 6 —1983 Second