NZS 4541:2003
Automatic fire sprinkler systems
Provides rules for design, installation and maintenance of sprinkler systems in order that such systems reliably achieve their fire control function. This edition incorporates Amendments 1, 2 and 3.
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COMMITTEE REPRESENTATION
© COPYRIGHT
CONTENTS
REFERENCED DOCUMENTS
REVIEW OF STANDARDS
FOREWORD
Part 1 Miscellaneous and general information
101 SCOPE
102 REFERENCES
103 DEFINITIONS
104 SEISMIC RESISTANCE
105 WORKMANSHIP
106 TYPICAL ARRANGEMENTS
107 WELDING
108 SPRINKLER SYSTEM CERTIFICATE OF COMPLIANCE METHODOLOGY
109 STATUS OF SYSTEMS DESIGNED TO SUPERSEDED STANDARDS
110 ALTERNATIVE MEANS OF COMPLIANCE – CERTAIN RESIDENTIAL BUILDINGS
111 LISTING OF CONTRACTORS
112 LISTING OF EQUIPMENT
113 PROCEDURES IN RELATION TO LISTING
Part 2 Basic rules of design
201 INSTALLER TO BE LISTED
202 MINIMUM REQUIRED DISCHARGE AND DESIGN FLOW
204 EXTENT OF SPRINKLER PROTECTION
203 DETERMINATION OF FIRE HAZARD
205 FIRE LOADS ADJOINING, LINKED, OR ADJACENT TO THE SPRINKLER PROTECTED BUILDING OR SPRINKLER PROTECTED FIRECELL
206 WATER SUPPLY REQUIREMENTS FOR EXTERNAL SPRINKLERS
207 PERMITTED EXCEPTIONS FROM SPRINKLERING
208 PROVISION OF HAND OPERATED FIRE FIGHTING APPLIANCES
209 PROVISION OF BLOCK PLAN
210 PROVISION OF WATER SUPPLY REFERENCE INFORMATION
211 MULTI-STOREYED BUILDINGS
212 AIR HANDLING PLANT
Part 3 Types of systems
301 GENERAL
302 CONVENTIONAL SPRINKLER SYSTEMS
303 DELUGE SYSTEMS
304 WATER MIST SYSTEMS
Part 4 System components
401 GENERAL
402 SPRINKLERS
403 PIPEWORK
404 VALVES
405 ENHANCED SAFETY VALVE SET
406 PRESSURE GAUGES
407 ALARM DEVICES
408 STORAGE HEIGHT LIMITATION SIGNS
409 HOSE ASSEMBLIES
Part 5 Location of sprinklers
501 GENERAL
502 WALLS AND PARTITIONS
503 CEILINGS AND ROOFS
504 STAGGERED SPACING
505 MINIMUM DISTANCE BETWEEN SPRINKLERS
506 VERTICAL OBSTRUCTIONS TO SPRINKLER DISCHARGE
507 COLUMNS
508 OPEN ROOF TRUSSES
509 CLEAR SPACE BELOW SPRINKLERS
510 SPECIAL REQUIREMENTS FOR SPACING AND LOCATION OF SIDEWALL SPRINKLERS
511 LOCATIONS OR CONDITIONS REQUIRING SPECIAL CONSIDERATION
512 OBSTRUCTIONS BELOW SPRINKLERS
513 FILM AND TELEVISION PRODUCTION STUDIOS
514 THEATRES AND MUSIC HALLS
515 CUPBOARDS AND WARDROBES
516 SKYLIGHT SHAFTS
517 EXTERNAL SPRINKLERS
Part 6 Water supplies
601 GENERAL
602 FLOW AND PRESSURE REQUIREMENTS
603 CLASSES OF WATER SUPPLY
604 STORAGE TANK CAPACITY AND REFILLING
605 TOWN MAINS, BOOSTED TOWN MAINS, SUPPLEMENTED TOWN MAINS
606 PUMPED SUPPLIES – WATER SOURCES
607 PUMPED SUPPLIES – PUMP UNITS
608 ELEVATED TANKS
609 PRESSURE TANKS
611 PROVING OF WATER SUPPLIES
610 FIRESPRINKLER INLETS (BRIGADE INLET CONNECTIONS)
612 PRIVATE SITE FIRE MAINS (see 603.1 Class B2)
PART 7 Extra light hazard system design data
701 WATER SUPPLIES
702 SPRINKLER TYPE AND SPACING
703 PIPEWORK
704 STORAGE AREAS AND DRYING ROOMS
PART 8 Ordinary hazard system design data
801 DESIGN CRITERIA, PIPE SIZING AND WATER SUPPLIES
802 SPRINKLER SPACING
803 EXTENDED COVERAGE ORDINARY HAZARD (ECOH) SPRINKLERS – SPECIAL REQUIREMENTS
PART 9 Extra high hazard system design data
901 DESIGN DENSITY AND WATER SUPPLIES
902 SPRINKLER SPACING AND LOCATION IN RACKS
903 PIPEWORK (EHH)
904 SPECIAL REQUIREMENTS FOR BONDED BARREL STORES (SPIRITUOUS LIQUORS)
905 SPECIAL REQUIREMENTS FOR STORAGE OF CERTAIN AEROSOL CONTAINERS
906 OTHER
907 LARGE DROPLET SPRINKLERS
908 EARLY SUPPRESSION FAST RESPONSE SPRINKLERS
Part 10 Fully hydraulically calculated design
1001 GENERAL
1002 DESIGN REQUIREMENTS
1003 DETERMINATION OF AREA OF OPERATION
1004 DETERMINATION OF DESIGN FLOW AND PRESSURE
1005 METHOD OF CALCULATION
1006 DOCUMENTATION
PART 11 Precautions to be taken when an installation is rendered inoperative
1103 AUTHORIZATION
1101 GENERAL
1102 NOTIFICATION
1104 HOT WORK
1105 SECTIONAL VALVES
1106 BLANKING PIECES
1107 WATER SUPPLIES
Part 12 Routine testing, maintenance and surveying
1201 GENERAL
1202 ROUTINE TESTS AND MAINTENANCE
1203 ROUTINE SURVEYS
1204 TESTING OF SPRINKLERS
APPENDIX
A TESTING OF TERRITORIAL AUTHORITY WATER MAINS
B ORIFICE PLATES (Informative)
C EMBANKMENT SUPPORTED MEMBRANE PILLOW TANKS
D SPRINKLER SYSTEM STORAGE DECLARATION
E AEROSOLS – GENERAL BACKGROUND AND EXAMPLES OF CLASSIFICATION
F AEROSOL WARNING SIGNS
G GUIDELINES FOR EVALUATION OF CONTRACTORS BY SPRINKLER SYSTEM CERTIFIER (SSC)
H CERTIFICATE OF LISTING OF CONTRACTOR
J GUIDELINES FOR EVALUATION OF EQUIPMENT FOR LISTING BY SPRINKLER SYSTEM CERTIFIER
K EXPLANATORY INFORMATION ON LARGE DROPLET SPRINKLERS
L SPRINKLER SYSTEM CERTIFICATE OF COMPLIANCE
M INFORMATION TO BE PROVIDED WHEN ORDERING A PUMP UNIT
N EXPLANATORY INFORMATION ON EARLY SUPPRESSION FAST RESPONSE (ESFR) SPRINKLERS
P THE DETERMINATION OF THE DESIGN PARAMETERS FOR SHELVING STORAGE OF MIXED CATEGORIES OF GOODS, USING ROOF LEVEL PROTECTION ONLY
Q WATER MIST FIRE PROTECTION
INDEX
OTHER NEW ZEALAND STANDARDS FOR FIRE PROTECTION
Table
2.1 – Representative schedule of occupancies
2.2 – Fire hazard categories of representative materials
3.1 – Anti-freeze solutions
4.1 – Acceptable types of sprinklers
4.2 – Allowable horizontal loads of typical pipework braces
4.3 – Horizontal load capacity of typical connections
5.1 – Sprinkler distances from obstructions (See illustration below)
5.2 – Maximum distance of residential sprinklers above bottom of ceiling obstruction (where not specified by manufacturer)
5.3 – Maximum height of storage for roof or ceiling sprinklers only
7.1 – Minimum pipe sizes for precalculated extra light hazard sprinkler arrays
8.1 – Maximum number of sprinklers on tabular pipework
8.2 – ECOH sprinkler distances from ceiling mounted obstructions (see figure 8.1)
8.3 – ECOH sprinkler distances from suspended or floor mounted obstructions (see figure 8.2)
9.1 – Extra high hazard occupancies – process risks
9.2 – Design density and assumed maximum area of operation for free standing or block stacked goods
9.3 – Design density and assumed maximum area of operation for shelving, post pallet and rack storage where roof or ceiling protection only is permitted
9.4 – Pressure/flow requirements – discharge density not exceeding 15 mm/min
9.5 – Pressure/flow requirements – discharge density not exceeding 30 mm/min
9.6 – Pipework requirements for systems to table 9.4
9.7 – Pressure losses for medium grade pipework
9.8 – Pipework requirements for systems to table 9.5
9.9 – Minimum sprinkler orifice pressures and the number of sprinklers to be designed to operate for various materials in palletized, solid piled and racked storage and for paper rolls stored with axis vertical and record storage
9.10 – Obstruction entirely below the sprinkler (ESFR sprinkler) (see figures 9.12 or 9.13)
9.11 – Guidelines for ESFR sprinklering of solid mezzanines
9.12 – Guidelines for ESFR sprinklering of walkways
10.1 – Values of ‘R’ for steel and chlorinated PVC pipes
B1 – Pipes of 50 mm and 65 mm diameter and 500 L/min flow
B2 – Pipes of 80 mm to 200 mm diameter and 5000 L/min flow
Figure
1.1 – Typical end-centre arrangement
1.2 – Definition of range and distribution pipes
1.3 – Typical end-side arrangement
1.4 – Typical fire sprinkler system
2.1 – Permitted exceptions from sprinklering of concealed spaces
2.2 – Display of reference information
3.1 – Typical tail end anti-freeze installation
4.1 – Seismic flexible joint
4.2 – Location of pipework bracing
4.3 – Examples of load distribution to pipework bracing
4.4 – Pipework bracing details
4.5 – Multi-storey building valve set arrangement
4.6 – Wet pipe control valve showing an acceptable arrangement for Type ‘X’ signalling complying with 407.2.2.1
4.7 – Wet pipe control valve showing an acceptable arrangement for Type ‘Y’ signalling complying with 407.2.2.2
4.8 – Typical dry pipe control valve arrangement
4.9 – Storage height limitation sign
5.1 – Spacing arrangements – standard and staggered
5.2 – Positioning of sprinkler heads
5.3 – Position of residential sprinkler deflector, upright or pendent, when located above the bottom of a ceiling obstruction
5.4 – Sprinkler positions for machines in tiers
5.5 – Location of sprinklers in extraction ducts
5.6 – Typical external sprinklers
6.1 – Diagrammatic key to water supply requirements
6.2 – Permissible supply to hydrants from town main sprinkler connections – diagrammatic layout (Class C supply)
6.3(a) – Typical arrangement for boosted town main without pressure relief line
6.3(b) – Typical arrangement for boosted town main with pressure relief line
6.4 – Typical arrangement for pump and tank supply
6.5 – Diesel engine controller logic unit
8.1 – Position of sprinkler head to avoid obstruction to sprinkler discharge (extended coverage upright and pendent spray sprinklers)
8.2 – Position of sprinkler head to avoid suspended or floor mounted obstruction to sprinkler discharge (extended coverage upright and pendent spray sprinklers)
9.1 – Intermediate level protection in rack storage
9.2 – Typical extra high hazard class system – pipework to tables 9.6 and 9.4(1)
9.4 – Typical extra high hazard class system – pipework to table 9.8
9.5 – Typical bonded stores
9.6 – Arrangement of barriers around dedicated Level 2 aerosol storage area
9.7 – Provision of additional in-rack sprinkers around dedicated Level 2 aerosol storage areas
9.8 – In-rack sprinkler arrangement, single-row racks
9.9 – Large droplet discharge clear space
9.10 – Example to illustrate the large droplet obstruction rule
9.11 – Minimum distance from obstruction (ESFR sprinkler)
9.12 – Obstructions entirely below the sprinkler (ESFR sprinkler) (see table 9.10)
9.13 – Positioning of sprinklers to avoid obstructions to discharge (ESFR sprinkler) (see table 9.10)
10.1 – Determination of mean area per sprinkler
10.2 – Location and shape of hydraulically "most remote" area of operation
11.1 – Typical form for notifying that an installation is to be rendered inoperative
A1 – Water supply flow graph
C1 – Typical details of embankment supported membrane pillow tank
F1 – Example of a graphic symbol to accompany warning signs prohibiting the storage of aerosols
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Related Information
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Ministry: New Zealand Timber Preservation Council Inc
Section: 5.10.2
Citation context:The installation of these systems should comply with NZS4541:2003, Automatic fire sprinkler systems.
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COMMITTEE REPRESENTATION
© COPYRIGHT
CONTENTS
REFERENCED DOCUMENTS
REVIEW OF STANDARDS
FOREWORD
Part 1 Miscellaneous and general information
101 SCOPE
102 REFERENCES
103 DEFINITIONS
104 SEISMIC RESISTANCE
105 WORKMANSHIP
106 TYPICAL ARRANGEMENTS
107 WELDING
108 SPRINKLER SYSTEM CERTIFICATE OF COMPLIANCE METHODOLOGY
109 STATUS OF SYSTEMS DESIGNED TO SUPERSEDED STANDARDS
110 ALTERNATIVE MEANS OF COMPLIANCE – CERTAIN RESIDENTIAL BUILDINGS
111 LISTING OF CONTRACTORS
112 LISTING OF EQUIPMENT
113 PROCEDURES IN RELATION TO LISTING
Part 2 Basic rules of design
201 INSTALLER TO BE LISTED
202 MINIMUM REQUIRED DISCHARGE AND DESIGN FLOW
204 EXTENT OF SPRINKLER PROTECTION
203 DETERMINATION OF FIRE HAZARD
205 FIRE LOADS ADJOINING, LINKED, OR ADJACENT TO THE SPRINKLER PROTECTED BUILDING OR SPRINKLER PROTECTED FIRECELL
206 WATER SUPPLY REQUIREMENTS FOR EXTERNAL SPRINKLERS
207 PERMITTED EXCEPTIONS FROM SPRINKLERING
208 PROVISION OF HAND OPERATED FIRE FIGHTING APPLIANCES
209 PROVISION OF BLOCK PLAN
210 PROVISION OF WATER SUPPLY REFERENCE INFORMATION
211 MULTI-STOREYED BUILDINGS
212 AIR HANDLING PLANT
Part 3 Types of systems
301 GENERAL
302 CONVENTIONAL SPRINKLER SYSTEMS
303 DELUGE SYSTEMS
304 WATER MIST SYSTEMS
Part 4 System components
401 GENERAL
402 SPRINKLERS
403 PIPEWORK
404 VALVES
405 ENHANCED SAFETY VALVE SET
406 PRESSURE GAUGES
407 ALARM DEVICES
408 STORAGE HEIGHT LIMITATION SIGNS
409 HOSE ASSEMBLIES
Part 5 Location of sprinklers
501 GENERAL
502 WALLS AND PARTITIONS
503 CEILINGS AND ROOFS
504 STAGGERED SPACING
505 MINIMUM DISTANCE BETWEEN SPRINKLERS
506 VERTICAL OBSTRUCTIONS TO SPRINKLER DISCHARGE
507 COLUMNS
508 OPEN ROOF TRUSSES
509 CLEAR SPACE BELOW SPRINKLERS
510 SPECIAL REQUIREMENTS FOR SPACING AND LOCATION OF SIDEWALL SPRINKLERS
511 LOCATIONS OR CONDITIONS REQUIRING SPECIAL CONSIDERATION
512 OBSTRUCTIONS BELOW SPRINKLERS
513 FILM AND TELEVISION PRODUCTION STUDIOS
514 THEATRES AND MUSIC HALLS
515 CUPBOARDS AND WARDROBES
516 SKYLIGHT SHAFTS
517 EXTERNAL SPRINKLERS
Part 6 Water supplies
601 GENERAL
602 FLOW AND PRESSURE REQUIREMENTS
603 CLASSES OF WATER SUPPLY
604 STORAGE TANK CAPACITY AND REFILLING
605 TOWN MAINS, BOOSTED TOWN MAINS, SUPPLEMENTED TOWN MAINS
606 PUMPED SUPPLIES – WATER SOURCES
607 PUMPED SUPPLIES – PUMP UNITS
608 ELEVATED TANKS
609 PRESSURE TANKS
611 PROVING OF WATER SUPPLIES
610 FIRESPRINKLER INLETS (BRIGADE INLET CONNECTIONS)
612 PRIVATE SITE FIRE MAINS (see 603.1 Class B2)
PART 7 Extra light hazard system design data
701 WATER SUPPLIES
702 SPRINKLER TYPE AND SPACING
703 PIPEWORK
704 STORAGE AREAS AND DRYING ROOMS
PART 8 Ordinary hazard system design data
801 DESIGN CRITERIA, PIPE SIZING AND WATER SUPPLIES
802 SPRINKLER SPACING
803 EXTENDED COVERAGE ORDINARY HAZARD (ECOH) SPRINKLERS – SPECIAL REQUIREMENTS
PART 9 Extra high hazard system design data
901 DESIGN DENSITY AND WATER SUPPLIES
902 SPRINKLER SPACING AND LOCATION IN RACKS
903 PIPEWORK (EHH)
904 SPECIAL REQUIREMENTS FOR BONDED BARREL STORES (SPIRITUOUS LIQUORS)
905 SPECIAL REQUIREMENTS FOR STORAGE OF CERTAIN AEROSOL CONTAINERS
906 OTHER
907 LARGE DROPLET SPRINKLERS
908 EARLY SUPPRESSION FAST RESPONSE SPRINKLERS
Part 10 Fully hydraulically calculated design
1001 GENERAL
1002 DESIGN REQUIREMENTS
1003 DETERMINATION OF AREA OF OPERATION
1004 DETERMINATION OF DESIGN FLOW AND PRESSURE
1005 METHOD OF CALCULATION
1006 DOCUMENTATION
PART 11 Precautions to be taken when an installation is rendered inoperative
1103 AUTHORIZATION
1101 GENERAL
1102 NOTIFICATION
1104 HOT WORK
1105 SECTIONAL VALVES
1106 BLANKING PIECES
1107 WATER SUPPLIES
Part 12 Routine testing, maintenance and surveying
1201 GENERAL
1202 ROUTINE TESTS AND MAINTENANCE
1203 ROUTINE SURVEYS
1204 TESTING OF SPRINKLERS
APPENDIX
A TESTING OF TERRITORIAL AUTHORITY WATER MAINS
B ORIFICE PLATES (Informative)
C EMBANKMENT SUPPORTED MEMBRANE PILLOW TANKS
D SPRINKLER SYSTEM STORAGE DECLARATION
E AEROSOLS – GENERAL BACKGROUND AND EXAMPLES OF CLASSIFICATION
F AEROSOL WARNING SIGNS
G GUIDELINES FOR EVALUATION OF CONTRACTORS BY SPRINKLER SYSTEM CERTIFIER (SSC)
H CERTIFICATE OF LISTING OF CONTRACTOR
J GUIDELINES FOR EVALUATION OF EQUIPMENT FOR LISTING BY SPRINKLER SYSTEM CERTIFIER
K EXPLANATORY INFORMATION ON LARGE DROPLET SPRINKLERS
L SPRINKLER SYSTEM CERTIFICATE OF COMPLIANCE
M INFORMATION TO BE PROVIDED WHEN ORDERING A PUMP UNIT
N EXPLANATORY INFORMATION ON EARLY SUPPRESSION FAST RESPONSE (ESFR) SPRINKLERS
P THE DETERMINATION OF THE DESIGN PARAMETERS FOR SHELVING STORAGE OF MIXED CATEGORIES OF GOODS, USING ROOF LEVEL PROTECTION ONLY
Q WATER MIST FIRE PROTECTION
INDEX
OTHER NEW ZEALAND STANDARDS FOR FIRE PROTECTION
Table
2.1 – Representative schedule of occupancies
2.2 – Fire hazard categories of representative materials
3.1 – Anti-freeze solutions
4.1 – Acceptable types of sprinklers
4.2 – Allowable horizontal loads of typical pipework braces
4.3 – Horizontal load capacity of typical connections
5.1 – Sprinkler distances from obstructions (See illustration below)
5.2 – Maximum distance of residential sprinklers above bottom of ceiling obstruction (where not specified by manufacturer)
5.3 – Maximum height of storage for roof or ceiling sprinklers only
7.1 – Minimum pipe sizes for precalculated extra light hazard sprinkler arrays
8.1 – Maximum number of sprinklers on tabular pipework
8.2 – ECOH sprinkler distances from ceiling mounted obstructions (see figure 8.1)
8.3 – ECOH sprinkler distances from suspended or floor mounted obstructions (see figure 8.2)
9.1 – Extra high hazard occupancies – process risks
9.2 – Design density and assumed maximum area of operation for free standing or block stacked goods
9.3 – Design density and assumed maximum area of operation for shelving, post pallet and rack storage where roof or ceiling protection only is permitted
9.4 – Pressure/flow requirements – discharge density not exceeding 15 mm/min
9.5 – Pressure/flow requirements – discharge density not exceeding 30 mm/min
9.6 – Pipework requirements for systems to table 9.4
9.7 – Pressure losses for medium grade pipework
9.8 – Pipework requirements for systems to table 9.5
9.9 – Minimum sprinkler orifice pressures and the number of sprinklers to be designed to operate for various materials in palletized, solid piled and racked storage and for paper rolls stored with axis vertical and record storage
9.10 – Obstruction entirely below the sprinkler (ESFR sprinkler) (see figures 9.12 or 9.13)
9.11 – Guidelines for ESFR sprinklering of solid mezzanines
9.12 – Guidelines for ESFR sprinklering of walkways
10.1 – Values of ‘R’ for steel and chlorinated PVC pipes
B1 – Pipes of 50 mm and 65 mm diameter and 500 L/min flow
B2 – Pipes of 80 mm to 200 mm diameter and 5000 L/min flow
Figure
1.1 – Typical end-centre arrangement
1.2 – Definition of range and distribution pipes
1.3 – Typical end-side arrangement
1.4 – Typical fire sprinkler system
2.1 – Permitted exceptions from sprinklering of concealed spaces
2.2 – Display of reference information
3.1 – Typical tail end anti-freeze installation
4.1 – Seismic flexible joint
4.2 – Location of pipework bracing
4.3 – Examples of load distribution to pipework bracing
4.4 – Pipework bracing details
4.5 – Multi-storey building valve set arrangement
4.6 – Wet pipe control valve showing an acceptable arrangement for Type ‘X’ signalling complying with 407.2.2.1
4.7 – Wet pipe control valve showing an acceptable arrangement for Type ‘Y’ signalling complying with 407.2.2.2
4.8 – Typical dry pipe control valve arrangement
4.9 – Storage height limitation sign
5.1 – Spacing arrangements – standard and staggered
5.2 – Positioning of sprinkler heads
5.3 – Position of residential sprinkler deflector, upright or pendent, when located above the bottom of a ceiling obstruction
5.4 – Sprinkler positions for machines in tiers
5.5 – Location of sprinklers in extraction ducts
5.6 – Typical external sprinklers
6.1 – Diagrammatic key to water supply requirements
6.2 – Permissible supply to hydrants from town main sprinkler connections – diagrammatic layout (Class C supply)
6.3(a) – Typical arrangement for boosted town main without pressure relief line
6.3(b) – Typical arrangement for boosted town main with pressure relief line
6.4 – Typical arrangement for pump and tank supply
6.5 – Diesel engine controller logic unit
8.1 – Position of sprinkler head to avoid obstruction to sprinkler discharge (extended coverage upright and pendent spray sprinklers)
8.2 – Position of sprinkler head to avoid suspended or floor mounted obstruction to sprinkler discharge (extended coverage upright and pendent spray sprinklers)
9.1 – Intermediate level protection in rack storage
9.2 – Typical extra high hazard class system – pipework to tables 9.6 and 9.4(1)
9.4 – Typical extra high hazard class system – pipework to table 9.8
9.5 – Typical bonded stores
9.6 – Arrangement of barriers around dedicated Level 2 aerosol storage area
9.7 – Provision of additional in-rack sprinkers around dedicated Level 2 aerosol storage areas
9.8 – In-rack sprinkler arrangement, single-row racks
9.9 – Large droplet discharge clear space
9.10 – Example to illustrate the large droplet obstruction rule
9.11 – Minimum distance from obstruction (ESFR sprinkler)
9.12 – Obstructions entirely below the sprinkler (ESFR sprinkler) (see table 9.10)
9.13 – Positioning of sprinklers to avoid obstructions to discharge (ESFR sprinkler) (see table 9.10)
10.1 – Determination of mean area per sprinkler
10.2 – Location and shape of hydraulically "most remote" area of operation
11.1 – Typical form for notifying that an installation is to be rendered inoperative
A1 – Water supply flow graph
C1 – Typical details of embankment supported membrane pillow tank
F1 – Example of a graphic symbol to accompany warning signs prohibiting the storage of aerosols
Previous versions
NZS 4541:2003
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.