AS 2419 OVERVIEW OF PROPOSED CHANGES. Gary Nenadovich Director G N Consulting

Transcription

1 AS 2419 OVERVIEW OF PROPOSED CHANGES Gary Nenadovich Director G N Consulting

2 Disclaimer FPA Australia's policy is one of continuous improvement, details of products, procedures or methods described within this document are subject to change without notice. All information provided here is believed to be correct at the time of publication. Every effort has been made to ensure the accuracy of information which is provided in good faith nothing contained herein is intended to incorporate any representation or warranty, either express or implied or to form the basis of any legal relations between the parties hereto, additional to or in lieu of such as may be applicable to a contract of sale or purchase. This presentation is so provided solely on the basis that users will be responsible for making their own assessment of the matters discussed herein and are advised to verify all relevant representations, statements and information. FPA Australia, its directors, employees and agents do not accept any liability for any injury, loss or damage incurred by use of or reliance on the information.

3 Objectives 1. Generate public comment in response to DR AS Provide an overview of changes proposed in DR AS Outline process for providing feedback via FPA Australia 4. Provide an update regarding AS 2941 & AS Discuss insurance considerations in relation to fire hydrant systems 6. Provide an update on AS logbooks and FPAS 7. Facilitate questions and answers

4 DR AS Status FP009 commenced a complete rewrite of the standard in This draft is proposed to replace AS Public comment period commenced on 29 January Public comment period closes on 2 April Standards Australia is anticipating completion of public comment and ballot voting by FP009 in time to have a new version of AS adopted as a primary reference document in the 2015 BCA. FPA Australia is seeking members comments by 15 March 2014.

5 DR AS Status NCC BCA Volume One 2013 Public Comment Draft NCC BCA Volume One 2015 NCC BCA Volume One 2015 AS Published Draft considered for adoption by ABCB AS XX Time Now Target Standards Committee FP009 Developing Draft Assessment of Draft and PIA by ABCB DR AS Public Comment Consideration of Public Comment by FP009 Standards Committee Ballot Publication Deemed-to-Satisfy Requirement of BCA Volume One Good Practice where the BCA is not required Could inform an Alternative Solution

6 Ideal Situation NCC BCA Volume One Primary Reference Standards AS 2118 Suite AS Secondary Reference Standards AS AS

7 DR AS Objective The objective of the new AS is to specify minimum requirements for the design, installation and commissioning of fire hydrant systems which a) will augment the efficient extinguishment of fire within the boundaries of the site; b) can be utilized to minimize fire spread within or between one property or building and another; c) can be used by trained fire-fighting personnel; and d) Have inlet an outlet connections suitable for use with the local fire brigade s firefighting equipment.

8 DR AS Objective The objective of this edition is to incorporate changes that reflect current best practice, and to restructure, refine and expand the content o the Standard to clarify the intent of the normative provisions. This has resulted in an increase in the number of informative appendices.

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10 DR AS Key Changes The changes in this revision include the following: (i) (ii) A restructure of the document and content to make it easier to use and to improve its readability. Inclusion of informative appendices to clarify the intent of section(s) and clause(s). (iii) New technologies and industry best practices to enable competitive and cost-effective design and water conservation. (iv) previous Section 8, Pipework and valves split into two sections. (v) Acknowledgement of the life safety benefits of installed sprinkler systems.

11 DR AS Key Changes - Foreword There is now an acknowledgement in the foreword of DR AS that: Fire hydrant systems need to be designed, installed and commissioned by a person who have acquired through training, qualification, experience, or a combination of these, the knowledge and skill enabling them to correctly perform the required tasks. This is aligned with FPA Australia s development of the national Fire Protection Accreditation Scheme (FPAS) and proposed design, installation and certify classes to complement the already launched test and inspect class of accreditation.

12 DR AS Key Changes Section 1 Definitions The new standard includes 30 additional definitions to assist practitioners and approval agencies. Some examples include: Awning Balcony Break tank Block plan Boost Cabinet Classification Façade Fire brigade Fire hydrant attack/feed Fire load Fire main Floor area Flow, downstream Flow, Upstream Large Isolated Building Pressure, boost Pressure test (hydrostatic) Private water mains Pumpset Pumpset, fire hydrant Pumpset, jockey Pumpset, relay Reticulated water supply Room Roof Suction connection Water agency Water supply, infill Water supply, primary Water supply, supplementary

13 DR AS Key Changes Section 2 System Performance & Design No fire brigade booster assembly installed External Feed hydrant pressure and flow requirements apply Fire brigade booster assembly installed - External Attack hydrant pressure and flow requirements apply + Additional pressure and flow capacity when boosted Internal Attack hydrant pressure and flow different requirements

14 DR AS Key Changes Section 2 System Performance & Design Clause Multiple firefighting systems Where an additional firefighting system, other than hose reels (e.g. wallwetting sprinklers, automatic fire sprinklers) draw from the same water source or uses common pipework, the water source shall provide for the simultaneous operation of the systems. This aligns with FPA Australia Technical Advisory Note TAN-01.

15 DR AS Key Changes Section 2 System Performance & Design Clause 2.3 Hydraulic Design parameters Residual pressure at each fire hydrant shall not be less than that specified in Tables 2.6, 2.7, 2.8, 2.9 or 2.10 No reference to 95% performance of residual pressure available to property as per AS Information in relation to this is now in the Informative Appendix T.

16 DR AS Key Changes Section 2 System Performance & Design Clause 2.3 Hydraulic Design parameters Number of fire hydrants required to discharge simultaneously. New Table 2.1 provides basis for determining the number of hydrants required to flow according to the number of fire compartment and building classifications. Risk rationale applied.

17 DR AS Key Changes Section 2 System Performance & Design Clause 2.3 Hydraulic Design parameters Number of fire hydrants required to discharge simultaneously. AS included 1 Table (Table 2.1). Now multiple tables are proposed. New Table 2.2 Class 2 to 9 Buildings (excluding class 7a open deck carparks). Table now divided into: Non-sprinkler-protected buildings Sprinkler-protected buildings: <25m in effective height Sprinkler-protected buildings: >25m in effective height

18 Number of fire hydrants required to discharge simultaneously. Table 2.3 Class 7b or 8 buildings

19 Number of fire hydrants required to discharge simultaneously. Table 2.4 Class 7a Open deck carparks

20 Number of fire hydrants required to discharge simultaneously. Table 2.5 Open Yards

21 DR AS Key Changes Section 2 System Performance & Design Clause 2.3 Hydraulic Design parameters Hydrant Pressure and Flow No significant change to expected pressure and flows however, confusing Tables 2.2 and 2.3 from AS now scrapped in favour of 5 separate tables as follows: Table 2.6 Feed hydrant performance Table 2.7 Attack hydrant performance Table 2.8 Fire brigade boosted performance Table 2.9 Fixed on-site fire hydrant pumps Table 2.10 Relay Pump(s)

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27 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause 3.1 General It is now nominated that location of fire hydrants must provide coverage to all portions of the building that are considered to be part of the floor area of the building as defined by the National Construction Code series and, where required, all parts of an open yard(s). It is now noted that: Note 2. Fire hydrants may be above ground, with outlets suitable for connection of a fire hose, or in ground, with connection suitable for attachment of a fire brigade standpipe to which the fire hose may be connected.

28 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause Classification of hydrants as external now includes consideration of the following parameters: Being external to enclosing walls Podium areas In relation to a building with no enclosing walls, in an area not covered by the roof Awnings, roof overhang or similar with effective depths of 3m

29 DR AS Key Changes Section 3 Hydrant location & other related provisions

30 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause A hydrant is now classified as internal if: It is within an area enclosed by walls or on a roof that is not considered to be a podium Where there are no enclosing walls but under a roof Under an awning, balcony or horizontal floor projection

31 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause Classification of feed, attack and attack/feed fire hydrants Considerations for classification of hydrants as feed, attack or attack/feed Is a fire brigade booster assembly installed? If a fire brigade booster assembly is installed, is the fire hydrant located downstream of the fire brigade booster assembly? Is the hydrant within 20m or 10m of hardstand? What pressure and flow will be achieved? Attack/feed is a new classification only applicable when hydrants are part of a system where they may be used by the fire brigade as attack or feed hydrants. Internal fire hydrants are attack fire hydrants.

32 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause Hardstand Hardstand areas and vehicular approaches are proposed to meet certain criteria including: Ability to withstand static and dynamic loads applied by attending fire brigade pumping appliance(s) All weather surface Sized for access and effective positioning of fire brigade pumping appliance(s) Accommodate appropriate gradients for sloping sites for fire brigade pumping appliance(s)

33 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause 3.4 Location Clause 3.5 External Hydrants Located to provide coverage allowed to: One level below-ground and maximum 4 storeys above ground when attached to an external hydrant or fire brigade pumping appliance. Or One level below-ground, ground and one extra storey or mezzanine if internal hydrants are also required to achieve coverage.

34 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause Street Hydrants Expected to meet the requirements for external hydrants But Where a booster is installed, street hydrants not able to be used for total or partial coverage Not more than 2 street hydrants can be used for coverage Signage indicated street hydrant location is required

35 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause Protection of fire hydrants Sprinklered building no requirements. In non-sprinklered buildings, external hydrants: In or on the external wall of the building 90/90/90 separating construction 2m either side, 3m above Within 3.5m of the external wall 90/90/90 separating construction 2m either side, 3m above. Can be part of the building or freestanding independent structure Greater than 3.5m and less than 10m 90/90/90 separating construction 1m either side provided a minimum of 3m width is achieved and 2m above

36 DR AS Key Changes Section 3 Hydrant location & other related provisions

37 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause 3.6 Internal fire hydrants To be located in every required fire isolated exit not covered by external hydrants as permitted by the Standard. For required non-fire isolated exits internal hydrants are required to be within 4m of the exit However fire hydrant outlets need not be located adjacent to each required non-fireisolated exit, provided coverage can be achieved by fire hydrants located elsewhere. Mid landing locations ok as long as not more than half a flight of stairs above the FFL.

38 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause 3.11 Method of Measurement and Hose Lay Limitations New section. Confirms route to be measured must be direct but along expected paths of travel Where fire hose coverage requires ascending or descending a ramp or stair, the distance shall be measured along the path of travel followed by the stairway or ramp. For a stairway, the path shall be taken as a line along the nosing so the treads at the outer perimeter of the stair enclosure. For a ramp, the path shall be taken along the outer perimeter of the ramp. Distance from the building is a distance from the edge of the building including awning, roof or horizontal projection subject to depth. Fire hydrant locations serving a car park shall be determined with all car parking spaces empty.

39 DR AS Key Changes Section 3 Hydrant location & other related provisions Clause 3.11 Method of Measurement and Hose Lay Limitations Revolving doors not permitted to be used as an access point to the building for coverage Storage racking, shelving, internal walls, partitions, doors, fixed seating or any other fixed obstruction that restrict normal fire hose coverage throughout the building shall be measured around the obstructions. Where a fire brigade pumping appliance is to be used, for measuring purposes in determining coverage, the appliance shall: Be on hardstand Not <10m from the building Not under a roof or projection Be positioned in a single location

40 DR AS Key Changes Section 4 Water Sources & Supplies Clause Adequacy of water sources Where a river, reservoir, lake, dam, seawater or bore is used as a water source, evidence of the reliability and suitability of the water source shall be provided. Clause Water for use Recycled water acceptable subject to it being determined to be suitable for human contact. Clause 4.2 Water supplies Minimum 4 hours supply required for the required performance of the hydrant system or if also serving other firefighting systems, supply for simultaneous operation for the required durations of each system.

41 DR AS Key Changes Section 4 Water Sources & Supplies Clause Metering Where a water meter is installed the meter shall- (a) (b) be installed on a bypass such as around a backflow prevention device; or be installed in-line, provided the meter- (i) does not limit flow, including in the event of meter failure; (ii) does not include a strainer; and (iii) has the same nominal bore as the fire service. The hydraulic effect of the meter and associated pipework and fittings shall be included in flow and pressure calculations of the fire hydrant system design.

42 DR AS Key Changes Section 5 Water Storage Tanks Clause 5.2 Tank Construction On-site tanks shall be constructed from concrete or steel. Concrete tanks AS/NZS 1170 loading, AS3735 Concrete Steel tanks AS2304 Clause Tank fill time Multiple tank refill times to 50% capacity depending on tank capacity. Clause Increased signage requirements such as PRIMARY WATER SUPPLY and FIRE HYDRANT TANK

43 DR AS Key Changes Section 6 Pumpsets Requirements regarding relay pumps now in this section instead of fire brigade booster sec. Clause 6.2 When a pumpset is required When a primary water supply is unable to provide unassisted pressures required Relay pumps required when a building has an effective height >50m. Jockey / pressure maintenance pump required when any pressure-responsive device used for initiating the automatic starting of an on-site pumpset is installed. Different duty flow and pressures to be determined depending on number of pumps and relay pumps.

44 DR AS Key Changes Section 6 Pumpsets Clause 6.4 Fire Hydrant Pumpset(s) Configuration Minor changes to number and type of pumps allowed based on reliability and emergency power connection. Clause More comprehensive requirements in relation to: Relay pumps Inflow water supply pumpset(s) Fixed on-site pumpset(s) in parallel or in series with the fire brigade booster assembly Pump control Pump room or enclosure

45 DR AS Key Changes Section 7 Fire Brigade Booster Assembly Clause 7.1 General A fire brigade booster assembly shall (b) be located in a cabinet in accordance with the requirements of Section 10. (d) Incorporate fire hydrant valves and fire brigade booster connections that comply with the requirements of AS and AS respectively. Clause External alarm indication The location of the fire brigade booster shall be indicated by a red strobe light, which is activated by an alarm signal from a fire panel that serves: Any installed automatic smoke detection and alarm system or sprinkler system

46 DR AS Key Changes Section 7 Fire Brigade Booster Assembly Clause Accessibility, clearance and protection Booster must not be <3m from the vent terminal construction of the gas assembly or gas measurement system serve a gas assembly or gas measurement system. (Note these are defined by AS/NZS ) A clear area free of obstruction is required immediately in front of the booster cabinet 1500mm in front, 250mm either side. Clause 7.4 Types of fire brigade booster assemblies H pattern In-line I pattern Tank model Tank suction

47 Types of Fire Brigade Booster Assemblies H Pattern

48 Types of Fire Brigade Booster Assemblies H Pattern

49 Types of Fire Brigade Booster Assemblies I Pattern

50 DR AS Key Changes Section 7 Fire Brigade Booster Assembly Clause Number of boost inlet connections required Not less than two fire brigade booster inlet connections shall be provided for each fire brigade booster assembly. The number of fire brigade booster inlet connections required to be provided at a fire brigade booster assembly that only serves a fire hydrant system shall be determined as follows: Number of fire brigade booster inlets required = Hydrant system demand (L/s) 10 (L/s) If a fire hydrant and sprinkler system are served Number of fire brigade booster inlets required = Hydrant system demand (L/s) 10(L/s) + Sprinkler demand (L/s) 10(L/s)

51 DR AS Key Changes Section 7 Fire Brigade Booster Assembly Clause Non-sprinkler-protected buildings Specific requirements to protect the fire brigade booster assembly depending on proximity to building. Clause Sprinkler-protected buildings No requirement to protect the fire brigade booster assembly.

52 DR AS Key Changes Section 8 Pipework Design & Installation Previous Section 8 now split into 2 sections, i.e. Section 8 and Section 9. Clause Large isolated buildings not greater than 25 m Ring mains now required to be external to the building (where possible). New Clauses including: Clause 8.9 System Monitoring Valve monitoring now required for buildings greater than 25 m Clause 8.12 High Rise Design Criteria (should avoid the need for Alt. Solutions) Down feed (cascade systems) and Up feed (bottom up) systems allowed

53 DR AS Key Changes Section 9 Pipes, valves & fittings Pipe, valves and fittings specifications can be found here New Clause Plastic Pipe Joints Revised clauses including: Clause 9.7 Pipe Marking Previous 2 methods combined to 5 required and 5 optional criteria; and Clause 9.8 Corrosion Protection Recognises internal corrosion.

54 DR AS Key Changes Section 10 Ancillary Equipment Signage, cabinets and enclosures, pressure gauges and block plan requirements can be found here New Clause 10.2 Cabinets, Enclosures and Recesses Cabinets are now required to house fire brigade booster assemblies Clause 10.3 Signage Previous information expanded and contained under this one clause Clause Pressure gauge schedule A permanent chart showing pressure settings for all gauges at the F.B. booster assembly

55 DR AS Key Changes Section 11 Commissioning A more comprehensive description of system testing can be found here which includes reference to 2 Normative Appendices Q and S and 1 Informative Appendix R. New Clause 11.2 Hydrostatic testing of non-booster systems New Clause 11.3 Hydrostatic testing of boosted systems New Clause 11.4 Dynamic flow testing New Table 11.1 lists minimum mandatory testing in accordance with Normative Appendix Q and S

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