IS 15683:2006 Part 1 is the Indian Standard (BIS) for fixed fire fighting systems - general requirements. This Indian Standard specifies the general requirements for the design, installation, commissioning, and maintenance of fixed fire fighting systems. It acts as an umbrella document, providing a common framework and referring to specific standards for different system types like sprinklers, hydrants, and foam systems.
Sets out general requirements applicable to the design, installation, testing, maintenance, and safety of fixed fire fighting systems using various extinguishing agents.
Key requirements for water supply duration, system components, hydrostatic/pneumatic testing, and installation of fixed fire fighting systems.
| Reference | Value | Clause |
|---|---|---|
| Water Supply Duration (Light Hazard)— Minimum duration for effective fire control. | 30 min | Cl. 5.2.2 |
| Water Supply Duration (Ordinary Hazard)— Duration depends on the specific Ordinary Hazard Group (I, II, or III). | 60 - 90 min | Cl. 5.2.2 |
| Water Supply Duration (High Hazard)— Minimum duration; may be increased based on risk assessment. | ≥ 90 min | Cl. 5.2.2 |
| Min. Water Sources (High Hazard)— Two independent sources required, or one unlimited source (e.g., river). | 2 | Cl. 5.2.1 |
| Hydrostatic Test Pressure— Whichever is higher. Applied to all wet pipework. | 1.5 x Max working pressure or 10 bar | Cl. 10.3.2.1 |
| Hydrostatic Test Duration | 24 h | Cl. 10.3.2.1 |
| Acceptable Hydrostatic Test Leakage— The system must be visually inspected for any leaks. | No visible leakage | Cl. 10.3.2.1 |
| Pneumatic Test Pressure (Dry Systems)— For systems like pre-action or dry pipe sprinkler systems. | 2.7 bar | Cl. 10.3.2.2 |
| Max Pressure Loss (Pneumatic Test)— Acceptance criteria for the 24-hour pneumatic test. | 0.1 bar in 24 h | Cl. 10.3.2.2 |
| Pipe Flushing Min. Velocity— To ensure removal of debris from newly installed pipework. | 3 m/s | Cl. 10.2.1 |
| Min. Pipe Pressure Rating— Or 1.5 times max working pressure, whichever is higher. | 12 bar | Cl. 6.2.2 |
| Primary Pipe Material Standard (Steel)— For above-ground, welded & screwed mild steel piping. | IS 1239 (Part 1) | Cl. 6.2.1 |
| Common Underground Pipe Materials— Must be suitably protected against corrosion. | CI, DI, PE, GRP | Cl. 6.2.1 |
| Pressure Gauge Min. Dial Diameter | 100 mm | Cl. 6.6 |
| Pressure Gauge Scale Range— But not less than 1.5 times the maximum system pressure. | ~2 x Normal Pressure | Cl. 6.6 |
| Secondary Power Supply Duration— Applies to fire pumps and other essential electrical equipment. | Equal to water supply duration | Cl. 9.2 |
| Control Valve Requirement— e.g., Outside Screw & Yoke (OS&Y) or Post Indicator Valve (PIV). | Must be of indicating type | Cl. 6.3.1 |
| Min. Letter Height (General Signage)— For signs indicating locations of key equipment. | 50 mm | Cl. 11.1 |
| Min. Letter Height (Valve Chart)— For the permanent hydraulic information and valve identification chart. | 25 mm | Cl. 10.3.4.2 |
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Hydrostatic Test Pressure (Water-based Systems) | 1.5 times max working pressure, but not less than 15 kgf/cm² (~14.7 bar) for 2 hours. | 200 psi (~13.8 bar) or 50 psi (~3.4 bar) over working pressure, whichever is greater, for 2 hours. | NFPA 13-22 |
| Minimum Clearance (Sprinkler Deflector to Storage) | Minimum 460 mm | Minimum 18 in. (457 mm) | NFPA 13-22 |
| Water Supply Duration (Ordinary Hazard Group 1) | 60 minutes (as per IS 15105, referenced by IS 15683) | 60-90 minutes (depending on design area) | NFPA 13-22 |
| Minimum Pipe Size (Sprinkler System) | 25 mm (except for Light Hazard where smaller sizes may be permitted) | 1 in. (25.4 mm), with exceptions for limited residential applications. | NFPA 13-22 |
| Enclosure Integrity Test Requirement (Gaseous Systems) | Mandatory to verify that the design concentration holding time can be achieved. | Mandatory unless the enclosure is demonstrably leak-proof; detailed procedures using a door fan are specified. | NFPA 2001-22 |
| Main Drain Test Requirement | Required to verify water supply integrity; specific testing frequency is defined in related standards. | Required annually (for wet systems) to test water supply; results are compared to previous tests to detect degradation. | NFPA 25-23 |