AS 2941-1995

1 - AS 2941 - 1995 FIXED FIRE PROTECTION INSTALLATIONS-PUMPSET SYSTEMS
4 - PREFACE
5 - CONTENTS
8 - SECTION 1 SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 APPLICATION
8 - 1.3 REFERENCED DOCUMENTS
8 - 1.4 DEFINITIONS
8 - 1.4.1 Approved
9 - 1.4.2 Circulation relief
9 - 1.4.3 Controller
9 - 1.4.4 Discharge head (assembly)
9 - 1.4.5 Driver
9 - 1.4.6 Dynamic shaft deflection
9 - 1.4.7 Efficiency
9 - 1.4.8 Hollow shaft
9 - 1.4.9 Inertia base
9 - 1.4.10 Maximum allowable casing working pressure
9 - 1.4.11 Net positive suction head (NPSH)
9 - 1.4.12 Nominal size (DN)
9 - 1.4.13 Non-reverse ratchet
9 - 1.4.14 Oil-lubricated vertical turbine pump
9 - 1.4.15 Pumpset
9 - 1.4.16 Rate of flow
10 - 1.4.17 Rated flow (of a pump)
10 - 1.4.18 Rated pressure (of a pump)
10 - 1.4.19 Rated speed (of a pump)
10 - 1.4.20 Reference plane
10 - 1.4.21 Regulatory authority
10 - 1.4.22 Recirculation
10 - 1.4.23 Shaft line
10 - 1.4.24 Total discharge head
10 - 1.4.25 Total head (of a pump)
10 - 1.4.26 Total inlet head
10 - 1.4.27 Total outlet head
10 - 1.4.28 Total suction head
10 - 1.4.29 Velocity head
10 - 1.4.30 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 POSITIVE HEAD
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
12 - 3.1.2 Selection
12 - 3.1.3 Rated flows
13 - 3.1.4 Sprinkler installations
13 - 3.2 TYPES OF PUMPS
13 - 3.2.1 Fire protection pumps
13 - 3.2.2 Ancillary pumps
13 - 3.3 TYPES OF DRIVERS
15 - 3.4 PUMP/DRIVER CONNECTION
15 - 3.5 BASEPLATE
15 - 3.6 PIPEWORK
15 - 3.6.1 Pressure rating
15 - 3.6.2 Pipe sizes
15 - 3.6.3 Flanges
15 - 3.6.4 Threaded joints
15 - 3.7 VALVES
15 - 3.7.1 Non-return valve
15 - 3.7.2 Pump isolating valves
15 - 3.7.3 Air release valves
15 - 3.7.4 Circulation relief valve
16 - 3.7.5 Pressure-relief/flow control valves
17 - 3.8 VISIBILITY OF DISCHARGE
17 - 3.9 PRESSURE GAUGES
17 - 3.9.1 General
17 - 3.9.2 Discharge pressure gauge
17 - 3.9.3 Suction pressure gauge
18 - 3.10 FLOW-MEASURING DEVICES
18 - 3.10.1 General
18 - 3.10.2 Capacity
18 - 3.10.3 Size
18 - 3.10.4 Discharge
18 - 3.11 STARTING AND CONTROL
18 - 3.11.1 Arrangement
18 - 3.11.2 Caution sign
18 - 3.12 ELECTRICAL REQUIREMENTS
18 - 3.12.1 General
18 - 3.12.2 Power supply
18 - 3.13 MARKING
18 - 3.13.1 Method of marking
20 - 3.13.2 Pumpset
20 - 3.13.3 Pump
20 - 3.13.4 Driver
20 - 3.13.5 Fire pump controller
20 - 3.13.6 Battery
20 - 3.14 PUMPSET MANUALS
20 - 3.15 PUMPSET CONFIGURATIONS
23 - SECTION 4 SPECIFIC REQUIREMENTS FOR FIRE PROTECTION PUMPS
23 - 4.1 GENERAL
23 - 4.1.1 General design
23 - 4.1.2 Materials of construction
23 - 4.1.3 Performance
23 - 4.1.4 Pump casing
23 - 4.1.5 Water passages
23 - 4.1.6 Impellers
23 - 4.1.7 Shaft
24 - 4.1.8 Bearings
24 - 4.1.9 Shaft seal
24 - 4.2 END-SUCTION PUMPS
24 - 4.2.1 General design
24 - 4.2.2 Casing
24 - 4.2.3 Impeller
25 - 4.3 AXIALLY SPLIT CASE PUMPS (HORIZONTAL OR VERTICAL SHAFT) 4.3.1 Casing
25 - 4.3.1 Casing
25 - 4.3.2 Impeller
25 - 4.3.3 Shaft
25 - 4.4 MULTISTAGE CENTRIFUGAL PUMPS
25 - 4.4.1 Performance
25 - 4.4.2 Casing
25 - 4.4.3 Impellers
25 - 4.4.4 Shaft
25 - 4.5 TURBINE TYPE CENTRIFUGAL PUMPS (VERTICAL SHAFT)
25 - 4.5.1 Discharge head assembly
25 - 4.5.2 Bowl assembly
26 - 4.5.3 Impellers
26 - 4.5.4 Column pipes
26 - 4.5.5 Shafts
26 - 4.5.6 Line-shaft coupling
27 - 4.5.7 Line-shaft bearings
27 - 4.5.8 Line-shaft enclosing tube
27 - 4.5.9 Oil lubrication system
27 - 4.5.10 Automatic air-release valve
27 - 4.6 DRIVERS FOR VERTICAL TURBINE PUMPS
27 - 4.6.1 Permissible types
27 - 4.6.2 Provision for axial thrust
27 - 4.6.3 Right-angle gear drives
28 - SECTION 5 REQUIREMENTS FOR PRESSURE MAINTENANCE PUMPS
28 - 5.1 GENERAL
28 - 5.2 GENERAL REQUIREMENTS
30 - SECTION 6 FIRE HOSE REEL PUMPSETS
30 - 6.1 PREASSEMBLED FIRE HOSE REEL PUMPSETS
30 - 6.2 TYPES
30 - 6.3 OPERATION
30 - 6.4 MOTOR AND PRESSURE SWITCH
30 - 6.4.1 Wiring
30 - 6.4.2 Supply
30 - 6.4.3 Isolating switch
30 - 6.5 VALVES
31 - 6.6 UNIONS
31 - 6.7 MAXIMUM ALLOWABLE WORKING PRESSURE
31 - 6.8 MARKING
32 - SECTION 7 RESIDENTIAL/DOMESTIC SPRINKLER PUMPSETS
32 - 7.1 GENERAL
32 - 7.2 PREASSEMBLED RESIDENTIAL/DOMESTIC SPRINKLER PUMPSETS
32 - 7.3 PUMPSET TYPE
32 - 7.4 OPERATION
32 - 7.5 ELECTRICAL
32 - 7.5.1 Wiring
32 - 7.5.2 Supply
32 - 7.5.3 Isolating switch
33 - 7.6 VALVES
33 - 7.7 UNIONS
33 - 7.8 MAXIMUM ALLOWABLE WORKING PRESSURE
33 - 7.9 MARKING
35 - SECTION 8 ELECTRIC DRIVERS AND CONTROLLERS
35 - 8.1 ELECTRIC DRIVERS
35 - 8.1.1 General
35 - 8.1.2 Types of wiring
35 - 8.1.3 Basis of rating
35 - 8.1.4 Motor construction
36 - 8.2 ELECTRIC CONTROLLERS
36 - 8.2.1 General
36 - 8.2.2 Location
36 - 8.2.3 Controller cabinets
36 - 8.2.4 Isolating switch
36 - 8.2.5 Motor starter
36 - 8.2.6 Equipment segregation
37 - 8.2.7 Control devices
37 - 8.2.8 Indicator lights
37 - 8.2.9 Aural alarms
37 - 8.2.10 Alarm power supply
37 - 8.2.11 Test facility
37 - 8.2.12 Ammeter
37 - 8.2.13 Conductor terminations
38 - 8.2.14 Battery
38 - 8.2.15 Battery chargers
38 - 8.2.16 Wiring diagrams
38 - 8.2.17 Marking
38 - 8.2.18 Access for inspection and testing
38 - 8.2.19 Predelivery testing
38 - 8.3 WIRING
38 - 8.3.1 Field wiring
39 - SECTION 9 COMPRESSION-IGNITION DRIVERS AND CONTROLLERS
39 - 9.1 GENERAL REQUIREMENTS
39 - 9.1.1 Driver type
39 - 9.1.2 Power transmission
39 - 9.2 DRIVER PERFORMANCE
39 - 9.2.1 Fuel
39 - 9.2.2 Power rating and speed
39 - 9.2.3 Service life
39 - 9.2.4 Starting capability
39 - 9.3 DRIVER SYSTEMS
39 - 9.3.1 Lubrication system
39 - 9.3.2 Cooling system
40 - 9.3.3 Liquid cooling systems
40 - 9.3.4 Air cooling systems
40 - 9.3.5 Supplementary cooling systems
40 - 9.3.6 Fuel system
42 - 9.3.7 Air induction system
42 - 9.3.8 Exhaust system
42 - 9.3.9 Starting and stopping systems
47 - 9.3.10 Instrumentation
48 - 9.3.11 Governor
48 - 9.3.12 Guards
48 - 9.3.13 Marking
48 - 9.4 COMPRESSION-IGNITION DRIVER CONTROLLERS
48 - 9.4.1 General
48 - 9.4.2 Location
48 - 9.4.3 Controller cabinets
48 - 9.4.4 Isolating switch
48 - 9.4.5 Equipment segregation
48 - 9.4.6 Control functions
49 - 9.4.7 Indicator lights
49 - 9.4.8 Aural alarm
49 - 9.4.9 Conductor terminations
49 - 9.4.10 Mains wiring to controller
49 - 9.4.11 Controller to driver interconnecting wiring
50 - 9.4.12 Battery chargers
50 - 9.4.13 Generator/alternator isolation
50 - 9.4.14 Locked switches
50 - 9.4.15 Instructions
50 - 9.4.16 Access for inspection and testing
50 - 9.4.17 Pre-delivery testing
50 - 9.4.18 Wiring diagram
50 - 9.4.19 Marking
50 - 9.4.20 Test facility
50 - 9.5 ELECTRICAL CONNECTIONS ON ENGINE
50 - 9.6 SPARE PARTS
51 - SECTION 10 STEAM TURBINE DRIVERS
51 - 10.1 GENERAL
51 - 10.2 GEAR DRIVES
51 - 10.3 TURBINE PERFORMANCE
51 - 10.4 STEAM CONSUMPTION
51 - 10.5 STEAM SUPPLY
52 - 10.6 TURBINES
52 - 10.6.1 General
52 - 10.6.2 Casing
52 - 10.6.3 Rotor
52 - 10.6.4 Shaft
52 - 10.6.5 Bearings
52 - 10.6.6 Safety valve
53 - 10.6.7 Automatic start
53 - 10.6.8 Throttle valve
53 - 10.6.9 Steam traps and drains
53 - 10.6.10 Materials
53 - 10.7 SPEED GOVERNOR
53 - 10.7.1 General
53 - 10.7.2 Adjustment
53 - 10.7.3 Emergency control
53 - 10.8 GAUGES
54 - 10.9 INSTALLATION
55 - SECTION 11 SHOP TESTING AND CERTIFICATION
55 - 11.1 GENERAL
55 - 11.2 HYDROSTATIC TESTS
55 - 11.2.1 Pump casing
55 - 11.2.2 Ancillary equipment
55 - 11.3 PERFORMANCE TESTS
55 - 11.3.1 General
55 - 11.3.2 Pump
55 - 11.3.3 Electric driver sets
55 - 11.3.4 Compression-ignition driver sets
55 - 11.3.5 Controller
56 - 11.3.6 Mechanical checks
56 - 11.4 CERTIFICATION
57 - SECTION 12 SITING AND INSTALLATION
57 - 12.1 GENERAL
57 - 12.2 TEMPERATURE
57 - 12.3 LOCATION
57 - 12.4 LIGHTING
57 - 12.5 VENTILATION
57 - 12.6 DRAINAGE
57 - 12.7 PLINTHS
57 - 12.8 PROTECTION OF THE OVERALL SYSTEM AGAINST DAMAGE DUE TO MOVEMENT OR PRESSURE
57 - 12.9 IDENTIFICATION OF PIPEWORK
58 - SECTION 13 COMMISSIONING TESTING
58 - CRITERIA FOR ACCEPTANCE
59 - APPENDIX A - REFERENCED DOCUMENTS
59 - REFERENCED DOCUMENTS
61 - APPENDIX B - BORES FOR WATER SUPPLY DEDICATED TO FIREFIGHTING
61 - B1 SCOPE
61 - B2 SUPPLY FROM BORES
61 - B3 BORE SITE
61 - B4 TYPE OF PUMP
61 - B5 PUMP SUBMERGENCE
61 - B6 DESIGN
61 - B7 BOREHOLE DRILLINGS
61 - B8 CASING SIZE
62 - B9 CASING DESIGN STRESSES
62 - B10 SELECTION OF MATERIALS
62 - B11 SEALING OF CASING
62 - B12 DEVELOPING A BORE
62 - B13 PUMP INSTALLATION
62 - B14 ELECTRICAL EARTHING
63 - B15 TEST AND INSPECTION OF BORE
63 - B16 SCREENS AND SLOTTED CASING
63 - B17 WATER LEVEL INDICATION
64 - APPENDIX C - FIRE PUMP FLOW AND HEAD RATING
64 - C1 SCOPE
64 - C2 DESIGN
64 - C3 EXAMPLE OF HORIZONTAL CENTRIFUGAL PUMP
64 - C3.1 Duty requirement
64 - C3.2 Problem
64 - C3.3 Solution
64 - C4 CONCLUSION
66 - APPENDIX D - GUIDELINES FOR THE SELECTION OF DRIVERS
66 - D1 GENERAL
66 - D2 PUMP RATED POWER
66 - D3 ELECTRIC DRIVERS
66 - D4 COMPRESSION-IGNITION DRIVERS
67 - APPENDIX E - OPERATIONAL WARNING SIGNS (TYPICAL)
68 - APPENDIX F - WIRING SYSTEMS RATING
68 - F1 PROTECTION AGAINST EXPOSURE TO FIRE
68 - F2 PROTECTION AGAINST MECHANICAL DAMAGE
69 - F3 PROTECTION AGAINST HOSING WITH WATER
70 - APPENDIX G - THE PUMPHOUSE
70 - G1 SCOPE
70 - G2 LOCATION
70 - G3 LIGHTING
70 - G4 VENTILATION
70 - G5 DRAINAGE
70 - G6 PIPEWORK
70 - G6.1 Penetration of walls
71 - APPENDIX H - TYPICAL PERFORMANCE TEST DATA SHEETS
73 - APPENDIX I - COMMISSIONING TESTS
73 - I1 SCOPE
73 - I2 GENERAL
73 - I3 ELECTRIC MOTOR PUMPSETS
73 - I3.1 Purpose
73 - I3.2 Preparation
73 - I3.3 Procedure
74 - I3.4 Reporting of results
74 - I4 COMPRESSION-IGNITION ENGINE PUMPSETS
74 - I4.1 Purpose
74 - I4.2 Preparation
75 - I4.3 Procedure
76 - I4.4 Reporting of results
76 - I5 AUTOMATIC PRESSURE MAINTENANCE PUMPSETS
76 - I5.1 Purpose
76 - I5.2 Procedure
76 - I5.3 Reporting of results
76 - I6 LOCATION OF PRESSURE GAUGES

Specifies requirements for pumpset systems for use with fixed fire protection installations such as sprinkler, hydrant, water spray and hosereel systems.

This Standard specifies requirements for pumpset systems, generally represented by the equipment contained within the dotted enclosure in Figure 3.4, 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 steam, electrical, compression-ignition, and turbine drivers are also included. It is recognized that there are some special fire pump installations, e.g. at petrochemical and petroleum plants and small rural installations, which may require variations from the requirements of this Standard.

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