AS 2941-2002

1 - AS 2941-2002 FIXED FIRE PROTECTION INSTALLATIONS-PUMPSET SYSTEMS
4 - PREFACE
5 - CONTENTS
7 - SECTION 1 SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 APPLICATION
7 - 1.3 REFERENCED DOCUMENTS
7 - 1.4 DEFINITIONS
7 - 1.4.1 Approved
8 - 1.4.2 Circulation relief
8 - 1.4.3 Controller
8 - 1.4.4 Discharge head (assembly)
8 - 1.4.5 Driver
8 - 1.4.6 Duty point
8 - 1.4.7 Dynamic shaft deflection
8 - 1.4.8 Efficiency
8 - 1.4.9 Hollow shaft
8 - 1.4.10 Inertia base
8 - 1.4.11 Maximum allowable casing working pressure
8 - 1.4.12 Maximum flow
9 - 1.4.13 Net positive suction head (NPSH)
9 - 1.4.14 Nominal size (DN)
9 - 1.4.15 Non-reverse ratchet
9 - 1.4.16 Oil-lubricated vertical turbine pump
9 - 1.4.17 Pressure-relief
9 - 1.4.18 Pumpset
9 - 1.4.19 Reference plane
9 - 1.4.20 Recirculation
9 - 1.4.21 Line shaft
9 - 1.4.22 Total discharge head
9 - 1.4.23 Total head (of a pump)
9 - 1.4.24 Total suction head
10 - 1.4.25 Velocity head
10 - 1.4.26 Water-lubricated vertical turbine pump
11 - SECTION 2 WATER SUPPLIES
11 - 2.1 GENERAL
11 - 2.2 ACCEPTABLE SOURCES OF SUPPLY
11 - 2.3 QUALITY OF WATER
11 - 2.4 FLOODED SUCTION
11 - 2.5 SUCTION
11 - 2.5.1 Suction size
11 - 2.5.2 Devices on suction piping
12 - SECTION 3 GENERAL REQUIREMENTS FOR FIRE PROTECTION PUMPSETS
12 - 3.1 PERFORMANCE CHARACTERISTICS
12 - 3.1.1 General
13 - 3.1.2 Sprinkler installation
15 - 3.2 TYPES OF PUMPS
15 - 3.2.1 Fire protection pumps
15 - 3.2.2 Ancillary pumps
17 - 3.3 TYPES OF DRIVERS
17 - 3.4 PUMP/DRIVER CONNECTION
17 - 3.5 BASEPLATE
17 - 3.6 PIPEWORK (see also Section 11)
17 - 3.6.1 Pressure rating
17 - 3.6.2 Pipe sizes
17 - 3.6.3 Reducers
17 - 3.6.4 Flanges
17 - 3.6.5 Threaded joints
18 - 3.6.6 Grooved or shouldered joints
18 - 3.7 VALVES
18 - 3.7.1 Non-return valve
18 - 3.7.2 Pump-isolating valves
18 - 3.7.3 Air release valves
18 - 3.7.4 Circulation relief valve
19 - 3.7.5 Pressure-relief valves
20 - 3.8 VISIBILITY OF DISCHARGE
20 - 3.9 PRESSURE GAUGES
20 - 3.9.1 General
20 - 3.9.2 Discharge pressure gauge
20 - 3.9.3 Suction pressure gauge
20 - 3.10 FLOW-MEASURING DEVICES
20 - 3.10.1 General
21 - 3.10.2 Capacity
21 - 3.10.3 Discharge
21 - 3.11 STARTING AND CONTROL
21 - 3.11.1 Arrangement
21 - 3.11.2 Warning sign
21 - 3.12 ELECTRICAL REQUIREMENTS
21 - 3.12.1 General
21 - 3.12.2 Power supply
21 - 3.13 MARKING
21 - 3.13.1 Method of marking
21 - 3.13.2 Pumpset
22 - 3.13.3 Pump
22 - 3.13.4 Driver
22 - 3.13.5 Fire pump controller
22 - 3.13.6 Battery
22 - 3.14 PUMPSET MANUALS
22 - 3.15 PUMPSET CONFIGURATIONS
29 - SECTION 4 SPECIFIC REQUIREMENTS FOR FIRE PROTECTION PUMPS
29 - 4.1 GENERAL
29 - 4.1.1 General design
29 - 4.1.2 Materials of construction
29 - 4.1.3 Performance
29 - 4.1.4 Pump casing
29 - 4.1.5 Water passages
29 - 4.1.6 Impellers
30 - 4.1.7 Shaft
30 - 4.1.8 Bearings
30 - 4.1.9 Shaft seal
30 - 4.1.10 Direction of rotation indication
31 - 4.2 END-SUCTION PUMPS
31 - 4.2.1 General design
31 - 4.2.2 Casing
31 - 4.2.3 Impeller
31 - 4.2.4 Coupling
31 - 4.3 AXIALLY SPLIT CASE PUMPS (HORIZONTAL OR VERTICAL SHAFT)
31 - 4.3.1 Casing
31 - 4.3.2 Impeller
31 - 4.3.3 Shaft
31 - 4.4 MULTISTAGE CENTRIFUGAL PUMPS
31 - 4.4.1 Performance
31 - 4.4.2 Casing
32 - 4.4.3 Impellers
32 - 4.4.4 Shaft
32 - 4.5 TURBINE TYPE CENTRIFUGAL PUMPS (VERTICAL SHAFT)
32 - 4.5.1 Discharge head assembly
32 - 4.5.2 Bowl assembly
32 - 4.5.3 Impellers
32 - 4.5.4 Column pipes
32 - 4.5.5 Shafts
33 - 4.5.6 Line-shaft coupling
33 - 4.5.7 Line-shaft bearings
33 - 4.5.8 Line-shaft enclosing tube
33 - 4.5.9 Oil lubrication system
34 - 4.5.10 Automatic air-release valve
34 - 4.6 DRIVERS FOR VERTICAL TURBINE PUMPS
34 - 4.6.1 Permissible types
34 - 4.6.2 Provision for axial thrust
34 - 4.6.3 Provision for non-reversing
34 - 4.6.4 Right-angle gear drives
35 - SECTION 5 REQUIREMENTS FOR PRESSURE MAINTENANCE PUMPS
35 - 5.1 GENERAL
35 - 5.2 GENERAL REQUIREMENTS
37 - SECTION 6 FIRE HOSE REEL PUMPSETS
37 - 6.1 GENERAL
37 - 6.2 PREASSEMBLED FIRE HOSE REEL PUMPSETS
37 - 6.3 TYPES
37 - 6.4 OPERATION
38 - 6.5 ELECTRICAL
38 - 6.5.1 Wiring
38 - 6.5.2 Supply
38 - 6.5.3 Isolating switch
38 - 6.6 VALVES
38 - 6.7 UNIONS
38 - 6.8 MAXIMUM ALLOWABLE WORKING PRESSURE
38 - 6.9 MARKING
40 - SECTION 7 RESIDENTIAL/DOMESTIC SPRINKLER PUMPSETS
40 - 7.1 GENERAL
40 - 7.2 PREASSEMBLED RESIDENTIAL/DOMESTIC SPRINKLER PUMPSETS
40 - 7.3 PUMPSET TYPE
40 - 7.4 OPERATION
40 - 7.5 ELECTRICAL
40 - 7.5.1 Wiring
41 - 7.5.2 Supply
41 - 7.5.3 Isolating switch
41 - 7.6 VALVES
41 - 7.7 UNIONS
41 - 7.8 MAXIMUM ALLOWABLE WORKING PRESSURE
41 - 7.9 MARKING
43 - SECTION 8 ELECTRIC DRIVERS AND CONTROLLERS
43 - 8.1 ELECTRIC DRIVERS
43 - 8.1.1 General
43 - 8.1.2 Types of wiring
43 - 8.1.3 Basis of rating
43 - 8.2 ELECTRIC CONTROLLERS
43 - 8.2.1 General
44 - 8.2.2 Location
44 - 8.2.3 Controller cabinets
44 - 8.2.4 Isolating switch
44 - 8.2.5 Motor starter
44 - 8.2.6 Equipment segregation
45 - 8.2.7 Control devices
45 - 8.2.8 Indicator lights
45 - 8.2.9 Aural alarms
45 - 8.2.10 Alarm power supply
45 - 8.2.11 Test facility
45 - 8.2.12 Ammeter
46 - 8.2.13 Conductor terminations
46 - 8.2.14 Battery
46 - 8.2.15 Battery chargers
46 - 8.2.16 Wiring diagrams
46 - 8.2.17 Marking
47 - 8.2.18 Access for inspection and testing
47 - 8.2.19 Predelivery testing
47 - 8.3 WIRING
47 - 8.3.1 Field wiring
48 - SECTION 9 COMPRESSION-IGNITION DRIVERS AND CONTROLLERS
48 - 9.1 GENERAL REQUIREMENTS
48 - 9.1.1 Driver type
48 - 9.1.2 Power transmission
48 - 9.2 DRIVER PERFORMANCE
48 - 9.2.1 Fuel
48 - 9.2.2 Power rating and speed
48 - 9.2.3 Service life
48 - 9.2.4 Starting capability
49 - 9.3 DRIVER SYSTEMS
49 - 9.3.1 Lubrication system
49 - 9.3.2 Cooling system
50 - 9.3.3 Fuel system
50 - 9.3.4 Air induction system
51 - 9.3.5 Exhaust system
51 - 9.3.6 Starting and stopping systems
53 - 9.3.7 Instrumentation
54 - 9.3.8 Governor
54 - 9.3.9 Guards
54 - 9.3.10 Marking
54 - 9.4 COMPRESSION-IGNITION DRIVER CONTROLLERS
54 - 9.4.1 General
54 - 9.4.2 Location
54 - 9.4.3 Controller cabinets
54 - 9.4.4 Isolating switch
55 - 9.4.5 Equipment segregation
55 - 9.4.6 Control functions
55 - 9.4.7 Indicator lights
55 - 9.4.8 Aural alarm
56 - 9.4.9 Conductor terminations
56 - 9.4.10 Mains wiring to controller
56 - 9.4.11 Controller to driver interconnecting wiring
56 - 9.4.12 Battery chargers
56 - 9.4.13 Generator/alternator isolation
56 - 9.4.14 Locked switches
56 - 9.4.15 Instructions
57 - 9.4.16 Access for inspection and testing
57 - 9.4.17 Predelivery testing
57 - 9.4.18 Wiring diagram
57 - 9.4.19 Marking
57 - 9.4.20 Test facility
57 - 9.5 ELECTRICAL CONNECTIONS ON ENGINE
57 - 9.6 SPARE PARTS
62 - SECTION 10 SHOP TESTING AND CERTIFICATION
62 - 10.1 GENERAL
62 - 10.2 HYDROSTATIC TESTS
62 - 10.2.1 Pump casing
62 - 10.2.2 Ancillary equipment
62 - 10.3 PERFORMANCE TESTS
62 - 10.3.1 General
62 - 10.3.2 Pump
63 - 10.3.3 Electric driver sets
63 - 10.3.4 Compression-ignition driver sets
63 - 10.3.5 Controller
63 - 10.3.6 Mechanical checks
64 - 10.4 CERTIFICATION
65 - SECTION 11 SITING AND INSTALLATION
65 - 11.1 GENERAL
65 - 11.2 TEMPERATURE
65 - 11.3 LOCATION
65 - 11.4 LIGHTING
65 - 11.5 VENTILATION
65 - 11.6 DRAINAGE
65 - 11.7 PLINTHS
65 - 11.8 PROTECTION OF THE OVERALL SYSTEM AGAINST DAMAGE DUE TO MOVEMENT OR PRESSURE
65 - 11.9 IDENTIFICATION OF PIPEWORK
66 - SECTION 12 COMMISSIONING TESTING
67 - APPENDIX A - REFERENCED DOCUMENTS
67 - A1 REFERENCED DOCUMENTS
69 - APPENDIX B - BORES FOR WATER SUPPLY DEDICATED TO FIREFIGHTING
69 - B1 SCOPE
69 - B2 SUPPLY FROM BORES
69 - B3 BORE SITE
69 - B4 TYPE OF PUMP
69 - B5 PUMP SUBMERGENCE
69 - B6 DESIGN
69 - B7 BOREHOLE DRILLINGS
69 - B8 CASING SIZE
70 - B9 CASING DESIGN STRESSES
70 - B10 SELECTION OF MATERIALS
70 - B11 SEALING OF CASING
70 - B12 DEVELOPING A BORE
71 - B13 PUMP INSTALLATION
71 - B14 ELECTRICAL EARTHING
71 - B15 TEST AND INSPECTION OF BORE
71 - B16 SCREENS AND SLOTTED CASING
71 - B17 WATER LEVEL INDICATION
72 - APPENDIX C - GUIDELINES FOR THE SELECTION OF DRIVERS
72 - C1 GENERAL
72 - C2 PUMP RATED POWER
72 - C3 ELECTRIC DRIVERS
72 - C4 COMPRESSION-IGNITION DRIVERS
74 - APPENDIX D - OPERATIONAL WARNING SIGNS (TYPICAL)
75 - APPENDIX E - WIRING SYSTEMS RATING
75 - E1 PROTECTION AGAINST EXPOSURE TO FIRE
75 - E2 PROTECTION AGAINST MECHANICAL DAMAGE
76 - E3 PROTECTION AGAINST HOSING WITH WATER
77 - APPENDIX F - THE PUMPHOUSE
77 - F1 SCOPE
77 - F2 LOCATION
77 - F3 LIGHTING
77 - F4 VENTILATION
77 - F5 DRAINAGE
77 - F6 PIPEWORK
77 - F6.1 Penetration of walls
78 - APPENDIX G - GUIDE TO EXHAUST SYSTEM SIZING
78 - G1 METHOD OF SELECTION
78 - G2 USING THE EXHAUST SYSTEM SIZING CHART (FIGURE G1)
80 - APPENDIX H - TYPICAL PERFORMANCE TEST DATA SHEETS
82 - APPENDIX I - COMMISSIONING TESTS
82 - I1 SCOPE
82 - I2 GENERAL
82 - I3 ELECTRIC MOTOR PUMPSETS
82 - I3.1 Purpose
82 - I3.2 Preparation
82 - I3.3 Procedure
83 - I3.4 Reporting of results
83 - I4 COMPRESSION-IGNITION ENGINE PUMPSETS
83 - I4.1 Purpose
83 - I4.2 Preparation
84 - I4.3 Procedure
85 - I4.4 Reporting of results
85 - I5 AUTOMATIC PRESSURE MAINTENANCE PUMPSETS
85 - I5.1 Purpose
85 - I5.2 Procedure
85 - I5.3 Reporting of results
86 - I6 LOCATION OF PRESSURE GAUGES

Specifies specific requirements for pumpset systems to be used with fixed fire protection installation such as fire sprinkler, fire hydrant, fire hose reel and fire protection water spray systems.

This Standard specifies requirements for pumpset systems, generally represented by the equipment contained in Figures 3.4 and 3.5, for use with fixed fire protection installations such as sprinkler, hydrant, water spray, and hose reel systems. It covers water supplies and specific requirements for pumps, drivers, fire pump controllers, and auxiliary equipment. Requirements for installation and acceptance testing for electrical and compression-ignition drivers are also included.NOTE:Some special fire pump installations, e.g., at petrochemical and petroleum plants and small rural installations may require variations from the requirements of this Standard.

First published as AS 2941-1987.
Second edition 1995.
Third edition 2002.