Fire Safety of Industrial Buildings: Electrical Generating and Distributing Stations - Code of Practice

IS 3034: Scope Key Points & Specifications

1. Scope (Clause 6.1 - General Requirements)

• Covers design, installation, and maintenance of fire protection systems.
• Applies to water spray systems, foam systems, and associated fire fighting equipment.

2. Electrical Clearance for Water Spray Systems (Clause 8.8.7, Table 8.9)

• Note: Use highest minimum clearance if design BIL unavailable.

3. Inspection, Testing & Maintenance Frequency (Clause 9.8.1, Table 10.2)

• Testing after safety precautions.
• Flow testing or representative nozzle checks.
• Pump performance under load.

Summary

• Clearance from live electrical parts is critical for safety (see Table 8.9).
• Regular inspection and maintenance ensures system reliability (see Table 10.2).
• Applies

IS 3034: Fire Safety of Industrial Buildings - Electrical Generating & Distributing Stations references key Indian Standards (IS) essential for fire safety design, equipment, and procedures.

Key Referenced Indian Standards (Annex A Highlights)

Important Notes:

• Clause 12.2 mandates periodical mock fire drills to ensure staff alertness and efficiency.
• IS 3034 emphasizes fire safety in power plants (excluding nuclear and hydro-electric).
• Fire safety measures include building construction, process hazards, storage, and equipment.
• Compliance with referenced IS ensures adherence to best practices in fire safety.

Summary Diagram: Fire Safety Integration (IS 3034 + Referenced IS)

graph LR
A[IS 3034 Fire Safety Code] --> B(Building Construction & Layout)
A --> C(Fire Fighting Equipment)
A --> D(Alarm & Detection Systems)
A --> E(Storage & Hazard Controls)
B --> B1[IS 1646, 2309]
C --> C1[IS 636, 3844, 4927, 6070]
D --> D1

Fire Hazards in Electrical Generating & Distributing Stations (IS 3034 Highlights)

Key Fire Safety Provisions:

• Fire Station Location & Response:

  • Fire stations must be designed per Standing Fire Advisory Council norms.
  • Response time for fire appliances: ≤ 5 minutes (Clause 10.4.1).

• First-Aid Fire Fighting:

  • Fire extinguishers must be installed throughout the station.
  • Periodic inspection & maintenance as per IS 2190:1991 (Clause 11).

• Building & Layout:

  • Design, construction materials, and layout to minimize fire spread.
  • Special attention to hazardous areas: turbo-generator buildings, switchgear rooms, cable galleries, oil storage, coal handling, transformer yards.

Important References & Standards:

Fire Safety Measures Summary

flowchart TD
    A[Power Station] --> B[Hazard Identification]
    B --> C[Fire Prevention Measures]
    C --> D[Fire Detection & Alarm]
    D --> E[Fire Fighting Equipment]
    E --> F[Fire Station & Staff]
    F --> G[Emergency Response Plan]

Additional Notes:

• Fire safety in nuclear/hydro plants not covered in IS 3034.
• Fire safety measures must comply with statutory rules beyond this code.
• Emphasis on built-in safety features in equipment and isolation of fire risks.

For detailed tables and formulas, refer to the full IS 3034 document and related IS codes.

IS 3034: Building Construction & Fire Safety Key Points

• Clause 4.14: Storage buildings must comply with IS 3594:1991 (Fire safety of industrial buildings - General storage and warehousing).

• Clause 9.2: Fire protection equipment must be available during construction; minimize fire risks on-site.

• Clause 3.6: Fire systems must address smoke logging and toxic gases; provide adequate escape routes.

• Clause 12.2: Conduct periodic mock fire drills to check staff readiness; maintain records.

Important Related IS Codes for Fire Safety & Construction

Fire Safety Design Considerations (Internal Knowledge)

• Fire resistance rating: Follow IS 1642 for construction details and fire exposure hazards.
• Escape routes: Minimum width and number as per IS 1644.
• Fire load calculation:
  [ \text{Fire Load} = \sum (\text{Quantity of material} \times \text{Calorific value}) ]
• Fire water demand:
  [ Q = A \times q_d ]
  Where:
  • (Q) = total water demand (l/min)
  • (A) = area of coverage (m²)
  • (q_d) = design water density (l/min/m²), typically 6-12 l/min/m²

flowchart TD
    A[Building Construction] --> B[Fire Safety Compliance]
    B --> C[Storage Building: IS 3594]
    B --> D[Fire Protection Equipment Availability]
    B --> E[Escape Routes & Smoke Control]
    B --> F[Periodic Fire Drills]

Summary:
Ensure storage buildings meet IS 3594 standards; maintain fire protection equipment during construction; design for smoke

IS 3034 Fire Safety Measures for Coal Handling and Boiler Plant

Key References:

• Coal Storage & Handling: IS 3595:1984 (Fire protection for coal storage and handling)
• Boiler Plant Fire Protection: Clause 8.13 of IS 3034

Fire Safety Measures (Summary):

1. Coal Storage and Handling (Clauses 5.1, 8.12, 8.12.2)

• Follow IS 3595:1984 for fire protection of coal stockpiles and handling equipment.
• Key provisions include:
  • Segregation: Coal piles must be separated by fire breaks.
  • Fire detection: Use flame detectors and temperature sensors.
  • Firefighting: Provision of water spray systems, foam monitors, or dry chemical extinguishers.
  • Access: Maintain clear access routes for firefighting vehicles.

2. Boiler Plant Fire Protection (Clause 8.13)

• Fire detection and alarm systems must be installed.
• Automatic fire suppression systems (water sprinklers, foam systems) should protect critical areas.
• Use of fire-resistant materials in boiler house construction.
• Regular maintenance and inspection of fire safety equipment.

Typical Fire Protection Specifications for Coal Handling (from IS 3595:1984):

Formula for Fire Water Demand (Approximate):

[ Q = A \times I ]

• Q = Fire water demand (liters/min)
• A = Area of coal storage (m²)
• I = Intensity of water application (liters/min/m²), typically 5–10 l/min/m²

flowchart LR
    A[Coal Storage] --> B[Fire Detection]
    B --> C[Alarm System]
    C --> D[Fire Suppression]
    D --> E[Water Spray / Foam System]
    A --> F[Fire Breaks]
    D --> G[Firefighting

IS 3034: Electrical Equipment & Installations - Key Points

1. Reference Standard:
   Electrical equipment and installations in power stations must comply with IS 1646:1982 guidelines (Clause 6.1.1).

2. Clearance from Water Spray to Live Uninsulated Parts (Clause 8.8.7):
   Minimum clearance depends on nominal line voltage and design BIL (Basic Impulse Level). Key values:

• BIL is the crest value of impulse voltage the equipment withstands.
• If BIL unknown, use highest clearance for the voltage group.

3. Fire Safety Aspects:
   • Fire safety is critical due to risk of power disruption and equipment damage.
   • Includes design, layout, material choice, and fire suppression measures.
   • Covers turbo-generator buildings, switchgear rooms, cable galleries, oil storage, etc.
   • Refer also to IS 1646, IS 2 (Rounding off rules), and other relevant IS codes.

Summary Diagram: Clearance Concept

graph LR
A[Live Uninsulated Electrical Component] --> B[Water Spray Equipment]
B -- Minimum Clearance --> C[Distance based on Voltage & BIL]

Use IS 1646 for detailed installation practices and IS 3034 for fire safety design and layout in electrical generating/distributing stations.

IS 3034: Fire Protection Measures - Key Points

Inspection, Testing & Maintenance Frequency (Clause 9.8.1, Table 2)

Important Notes:

• Testing should avoid hazardous discharges.
• Where flow testing isn't practical, inspect representative nozzles.
• Pump tests should verify operability and performance under load.
• Standpipe tests include water flow at highest elevations.
• Periodical mock fire drills are mandatory (Clause 12.2).

Referenced IS Codes for Fire Equipment:

• IS 4989 (Foam Concentrates)
• IS 941 (Blower & Ex

IS 3034: Fire Detection and Extinguishing Systems - Key Points

Inspection, Testing & Maintenance Frequency (Clause 9.8.1, Table 10.2)

• X: Inspection
• A: Alarm Test (Transmitters)
• M: Maintenance
• T: Operational Test

Important Notes:

• Testing should avoid hazardous discharge conditions.
• Flow testing impractical? Remove and check representative nozzles.
• Fire pump tests include operability & performance under load.
• Standpipe testing includes water flow at highest elevation.
• Foam concentrates

IS 3034: Fire Safety During Construction - Key Points

Essential Fire Safety Measures (Clauses 9.2 & 9.4)

• Provide minimum fire detection and extinguishing equipment at all fire hazard locations:
  • Storage of construction & flammable materials
  • Welding, cutting, and other fire-risk operations
• Ensure availability of essential fire protection equipment and minimize fire risks during all construction activities.

Fire Emergency Preparedness (Clause 12.2)

• Conduct periodical mock fire drills to check alertness and efficiency of staff.
• Maintain records of drills and fire safety training.

Coordination with Permanent Fire Systems (Clause 9.3)

• Schedule construction so that permanent fire protection systems are installed and operational before major fire hazards are introduced.

Relevant IS Codes for Fire Safety Equipment & Practices

Fire Safety Checklist During Construction

• Fire detection: Heat/smoke detectors as per IS 2175, 11360
• Extinguishers: Portable fire extinguishers (IS 2190)
• Water supply: Hydrants, hose reels (IS 3844, 13039)
• Firefighting equipment: Pumps (IS 6070), hoses (IS 636, 4927)
• Training & drills: Regular mock drills, documented records

flowchart TD
    A[Construction Activities] --> B{Fire Hazard Present?}
    B -- Yes --> C[Install Fire Detection & Extinguishing Measures]
    C --> D[Ensure Availability of Fire Equipment]
    D --> E[Conduct Periodic Fire Drills]
    E --> F[Coordinate Installation of Permanent Fire Systems]
    B --

IS 3034 Key Specifications for Fire Stations & Emergency Preparedness

Fire Stations (Clause 10.4 & 10.4.1)

• Location: Fire stations must be sited to ensure fire appliance response time ≤ 5 minutes.
• Design: Must conform to the Standing Fire Advisory Council standards.
• Facilities: Housing for fire appliances and staff.

First-Aid Fire Fighting (Clause 11)

• Equipment: Fire extinguishers deployed throughout the power station.
• Maintenance: Periodic inspection per IS 2190:1991.

Fire Emergency Orders (Clause 12 & 1.80)

Additional Notes

• Large stations may require Main and Sub Fire Stations with updated communication for rapid mobilization.
• Fire protection and exit facilities must be adequate regardless of station size (Clause 8.2).

flowchart LR
    A[Power Station] --> B[Main Fire Station]
    A --> C[Sub Fire Station]
    B --> D[Fire Appliances]
    C --> D
    D --> E[Fire Fighting Staff]
    B -. Communication .-> C

This ensures quick response and coordinated emergency readiness.

IS 3034: Maintenance & Housekeeping of Fire Protection Systems

Key Clause: 9.8.1 - Maintenance Schedule (Table 2)

Legend:

• X = Inspection
• A = Alarm Test (Transmitters)
• M = Maintenance
• T = Operational Test

Important Notes:

• Testing should consider safety precautions to avoid hazardous discharge.
• Where flow testing isn't practical, check representative nozzles for blockage.
• Pump tests under load to verify design conditions.
• Standpipe tests include water flow at highest elevations.
• Maintain proper records of all inspections, tests, and maintenance.

Related IS Codes

IS 3034 - Fire Emergency Orders: Key Points & References

1. Fire Emergency Orders (Clause 12.1 & 12.1.1)

• Must include a Mutual Aid Scheme for mobilizing assistance (equipment & trained manpower) from neighboring units.
• Should facilitate organized fire response actions for all shifts (day & night).
• Include instructions on fire prevention and fire fighting organization.

2. Fire Station Requirements (Clause 10.4.1)

• Full-time fire brigades require well-designed fire stations.
• Response time for fire appliances must be ≤ 5 minutes.
• Fire station design to comply with Standing Fire Advisory Council standards.

3. First-Aid Fire Fighting (Clause 11)

• Deploy fire extinguishers throughout the plant.
• Maintain and inspect extinguishers per IS 2190:1991.

4. Periodic Fire Drills (Clause 12.2)

• Conduct mock fire drills regularly.
• Maintain records to ensure alertness and efficiency.

Important IS References for Fire Safety Equipment & Practices:

Summary Diagram: Fire Emergency Order Components

graph TD
  A[Fire Emergency Orders] --> B[Mutual Aid Scheme]
  A --> C[Fire Prevention Instructions]
  A --> D[Fire Fighting Organization]
  A --> E[Periodic Fire Drills]
  A --> F[First-Aid Fire Fighting Equipment]
  A --> G[Fire Station Design & Response Time ≤5 min]

In brief: IS 3034 mandates a comprehensive fire emergency plan with mutual aid, fire prevention, trained staff, rapid response fire stations, first-aid equipment per IS 219

IS 3034: List of Referred Indian Standards (Annex A)

This annex provides essential IS codes referenced for fire safety in industrial buildings, especially electrical generating and distributing stations. Key standards include:

Usage Notes:

• These standards cover equipment specs, installation, maintenance, and operational criteria for firefighting systems.
• Refer to IS 3034 for fire safety design and operational guidelines in power plants.
• Compliance with these referenced IS codes ensures comprehensive fire safety integration.

flowchart LR
    A[IS 3034 Fire Safety Code] --> B[Fire Fighting Equipment]
    A --> C[Fire Detection & Alarm Systems]
    A --> D[Water Supply & Hydrants]
    B --> E[Hose & Pumps (IS 636, 4927, 6070)]
    C --> F[Fire Detectors & Alarm (IS 2175, 2189)]
    D --> G[Hydrant Systems (IS 3844, 13039, 9668)]