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IS 942 : 1982Functional Requirements for 275 1/Min Portable Pump Set for Fire Fighting

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EN 14466 · NFPA 1921: 2020 Edition · GOST R 53332
CurrentSpecializedSpecificationFire Safety · Fire Fighting
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Link points to Internet Archive / others. Not hosted by InfraLens. Details
OverviewValues5InternationalTablesFAQ3Related

IS 942:1982 is the Indian Standard (BIS) for functional requirements for 275 1/min portable pump set for fire fighting. This standard specifies the functional requirements, materials, design, construction, and testing of a 275 liters per minute capacity portable pump set used for firefighting operations. It provides guidelines for mechanical and fire protection engineers to specify and procure lightweight portable equipment for initial fire response.

Functional Requirements for 275 1/Min Portable Pump Set for Fire Fighting

Overview

Status
Current
Usage level
Specialized
Domain
Fire Safety — Fire Fighting
Type
Specification
Amendments
Amendment 1 (1985)
International equivalents
EN 14466:2005+A1:2008 · CEN (European Committee for Standardization), EuropeNFPA 1921: 2020 Edition · NFPA (National Fire Protection Association), USAGOST R 53332-2009 · Rosstandart (Federal Agency on Technical Regulating and Metrology), Russia
Typically used with
IS 636IS 2643IS 2878IS 4927
Also on InfraLens for IS 942
5Key values3FAQs
Practical Notes
! Always account for altitude and standard atmospheric conditions when field-testing the 7m maximum suction lift, as performance degrades at higher altitudes.
! The priming system is critical for drafting from static water sources; routine maintenance checks must ensure it engages efficiently without air leakage.
! Ensure the delivery valves and hose connections match standard delivery threads (typically 63 mm instantaneous couplings as per IS requirements).
Frequently referenced clauses
Cl. 3General RequirementsCl. 4Pump ConstructionCl. 5PrimerCl. 6Engine SpecificationsCl. 9Performance Tests
Pulled from IS 942:1982. Browse the full clause & table index below in Tables & Referenced Sections.
Updates & Amendments1 amendment
1985Amendment 1 (1985)
Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.
aluminum alloygunmetalbronzesteel

International Equivalents

Similar International Standards
EN 14466:2005+A1:2008CEN (European Committee for Standardization), Europe
HighCurrent
Fire-fighting pumps - Portable pumps - Safety and performance requirements, tests
Covers safety and performance for various classes of engine-driven portable fire pumps.
NFPA 1921: 2020 EditionNFPA (National Fire Protection Association), USA
HighCurrent
Standard for Fire Department Portable Pumping Units
Specifies requirements for the design, construction, and performance of portable pumps used by fire departments.
GOST R 53332-2009Rosstandart (Federal Agency on Technical Regulating and Metrology), Russia
MediumCurrent
Fire-fighting technic. Portable fire-pumps. General technical requirements. Test methods.
Defines general technical requirements and test methods for portable motor-pumps for fire fighting.
Key Differences
≠IS 942 defines a single, fixed performance point (275 l/min at 28 m head), whereas standards like EN 14466 define multiple performance classes (e.g., PFPN 10-750 for 750 l/min at 10 bar), offering a wider range of standardized capacities.
≠Modern international standards (EN 14466, NFPA 1921) have significantly more stringent and detailed safety requirements, including mandatory guards for all moving parts, noise emission limits, and specific design criteria for stability and carrying handles, which are less emphasized in the 1982 Indian standard.
≠The endurance testing procedure differs. IS 942 requires a continuous 4-hour run at rated output, while EN 14466 specifies a 3-hour test composed of different stages, including running at maximum suction lift and no-load conditions, to better simulate varied operational stress.
≠International standards often require more advanced instrumentation. For example, EN 14466 mandates a built-in hour meter and specifies the accuracy class of pressure gauges, features not explicitly required by IS 942.
Key Similarities
≈All standards are fundamentally centered on engine-driven, portable pumping units designed for firefighting applications, emphasizing mobility and self-sufficiency.
≈The core performance characteristics defined in all standards are based on the same three principles: a rated flow rate, a rated pressure (head), and a specified suction lift capability.
≈The use of a centrifugal pump is a common technical basis across all the standards, as it is the most suitable type for this application's flow and pressure requirements.
≈All standards mandate performance verification through a series of tests, including a pumping test to confirm rated output and an endurance test to ensure operational reliability.
≈Each standard requires the pump to be supplied with essential accessories for immediate deployment, most notably a suction strainer to prevent debris from entering and damaging the pump.
Parameter Comparison
ParameterIS ValueInternationalSource
Rated Flow Rate275 l/min250 l/min (for class PFPN 4-250)EN 14466
Rated Pressure / Head28 m head (≈2.8 bar)4 bar (≈40 m head) (for class PFPN 4-250)EN 14466
Rated Suction Lift3 m3 m (for rated performance test)EN 14466
Endurance Test Duration4 hours continuous3 hours total, in stages (e.g., 2.5 hours at rated output)EN 14466
Dry Priming Time (from 3m lift)Not to exceed 30 secondsNot to exceed 30 secondsEN 14466
Suction Inlet Connection63 mm round thread male (as per IS 903)Varies by capacity/region, e.g., Storz, British Standard Pipe (BSP), or National Hose (NH) threads.NFPA 1921 / EN 14466
Hour Meter RequirementNot specifiedMandatoryEN 14466
⚠ Verify details from original standards before use

Key Values5

Quick Reference Values
Rated Capacity275 liters per minute (l/min)
Nominal Delivery Pressure0.4 MPa (approx. 4 kgf/cm²)
Maximum Suction Lift7.0 meters
Continuous Operation Requirement2 hours minimum
Fuel Tank CapacityAdequate for 2 hours continuous run at full load

Tables & Referenced Sections

Key Tables
No tables data
Key Clauses
Clause 3 - General Requirements
Clause 4 - Pump Construction
Clause 5 - Primer
Clause 6 - Engine Specifications
Clause 9 - Performance Tests

Related Resources on InfraLens

Cross-Referenced Codes
IS 636:1988Non-Ferrous Metals and Alloy Ingots for Sand ...
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IS 2643:2018Dimensions of Pipe Threads Where Pressure Tig...
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IS 2878:2004Fire Extinguisher, Carbon Dioxide Type (Porta...
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IS 4927:1992Specification for Unlined Flax Canvas Hose fo...
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Frequently Asked Questions3

What is the rated capacity of the pump?+
The pump is designed to deliver 275 liters per minute (l/min).
What is the required suction lift capability?+
The pump and primer must be capable of drafting water from a maximum suction lift of 7 meters.
How long should the pump be able to operate continuously?+
The engine, cooling system, and fuel tank must support at least 2 hours of continuous operation at rated capacity.

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