Functional requirements for hose laying tender for fire brigade use

IS 2930: Scope & Key Specifications Summary

This standard covers the functional requirements for hose laying tenders used by fire brigades to lay long hose lines for firefighting.

Key Specifications (Clause 6.3 - Appendix A)

Additional Accessories (Clause 6.2)

• Fire bells (250 mm diameter)
• Head lamps (≥20 cm diameter), fog lamps, reversing light
• Twin amber blinkers, trafficators with indicator lights
• Wind screen wipers and defrosting devices
• Tools for routine maintenance
• Search light with tripod and ≥30 m TRS cable (≤2% voltage drop)
• Spot light and inspection lamp with plug socket
• Three electric swiveling fans powered by vehicle battery

Units & Definitions (SI Units)

This standard ensures equipment compatibility, performance, and safety for fire brigade hose laying tenders.

flowchart LR
    A[Hose Laying Tender] --> B[Hose Delivery 70mm]
    A --> C[Hose Clamps &

IS 2930 - Key References, Formulas & Specifications

1. Equipment Schedule (Appendix A, Clause 6.3)

2. Accessories (Clause 6.2)

• Fire bell: 250 mm diameter, natural tone, operable from inside cab.
• Headlamps: Two, ≥ 20 cm diameter.
• Fog lamps, reversing light, twin amber blinkers.
• Trafficators with illuminated indicators.
• Defrosting device, windscreen wipers.
• Tools for routine maintenance.
• Trailer tail light connection (twin-wire socket/plug).
• Search light with tripod and ≥30 m TRS cable (≤2% voltage drop).
• Spot light, inspection lamp, electric swiveling fans (3 Nos).

3. SI Units & Definitions (Clause on Units)

4. Notes

• Hose specification per IS:636-1979 (rubber lined, woven-jacketed).
• Hose clamps and bandages per IS:5612 (Parts I & II).
• Fire bell per IS (revised).
• Voltage drop in searchlight cable ≤ 2%.

flowchart TB
    A[Hose Laying Tender] --> B[Hose Delivery 70 mm]
   

IS 2930: Materials and Corrosion Resistance Key Points

• Clause 3.1.1: All parts in contact with water must be made of corrosion-resistant materials or treated for corrosion resistance.
• Clause 3.1: Materials used shall be mild steel or aluminium.

Corrosion Resistance Measures:

• Use corrosion-resistant alloys or coatings (e.g., galvanizing mild steel).
• Protective paints or treatments on mild steel.
• Aluminium naturally resists corrosion but may require anodizing for enhanced durability.

Relevant Specifications for Components (Clause 6.3, Appendix A):

Notes:

• Use rubber-lined hoses (IS 636) for durability and corrosion resistance.
• Hose clamps and bandages per IS 5612 ensure secure, corrosion-resistant joints.

Summary Table: Material Selection for Water-Contact Parts

flowchart TD
    A[Water Contact Parts] --> B{Material}
    B --> C[Mild Steel]
    B --> D[Aluminium]
    C --> E[Apply corrosion protection]
    D --> F[Usually corrosion resistant]
    E --> G[Galvanize / Paint]
    F --> H[Optional anodizing]

Use IS 636 and IS 5612 for hoses and accessories to ensure compliance and corrosion resistance.

IS 2930: Design and Construction Key Points

• Material Specifications (Clause 3.1.1):
  All parts in contact with water must be corrosion-resistant or treated for corrosion resistance.

• Roof Construction (Clause 4.5.1.7):
  Roof must support the weight of one man without damage.

• Equipment Schedule (Appendix A, Clause 6.3):

  Item	Description	Quantity
  1	Delivery Hose, 70 mm, rubber lined (IS 636-1979)	75 Nos (30 m each)
  2	Hose Clamps (IS 5612 Part I-1977)	24 Nos
  3	Hose Bandages (IS 5612 Part II-1977)	24 Nos
  4	Hose Ramps (wooden/sand filled)	12 pairs
  5	Electric Torches	4 Nos
  6	Folding Canvas Cams (4,500 litres capacity each)	2 Nos

• Units & Symbols (SI Units):

  • Length: metre (m)
  • Force: newton (N = 1 kg·m/s²)
  • Pressure/Stress: pascal (Pa = 1 N/m²)
  • Power: watt (W = 1 J/s)
  • Frequency: hertz (Hz = 1 cycle/s)

Summary Diagram: Design Requirements

graph TD
A[Design & Construction] --> B[Corrosion Resistance]
A --> C[Roof Strength]
A --> D[Equipment Provision]
B --> E[Material or Treatment]
C --> F[Support 1 Man Weight]
D --> G[Hose, Clamps, Bandages, Ramps, Torches, Canvas]

This ensures durability, safety, and operational readiness per IS 2930.

IS 2930: Workmanship and Finish Key Points

• Workmanship (Clause 5.1):
  All parts of the appliance must exhibit good workmanship, ensuring durability and proper functioning.

• Corrosion Resistance (Clause 3.1.1):
  Parts in contact with water or forming water-ways must be corrosion-resistant or suitably treated.

• Stability (Clause 4.8):
  Appliance must not overturn when tilted up to 25° under fully equipped and loaded conditions (excluding crew).

• Schedule of Equipment (Appendix A, Clause 6.3):
  Key equipment includes:

  Item	Description	Quantity
  1	Hose, delivery 70 mm, rubber lined (IS 636-1979)	75 Nos
  2	Hose clamps (IS 5612 Part I-1977)	24 Nos
  3	Bandages (IS 5612 Part II-1977)	24 Nos
  4	Hose ramps (wooden/sand filled)	12 pairs
  5	Electric torches	4 Nos
  6	Folding canvas cams (4,500 L capacity)	2 Nos

Summary Table of Key Specifications

Practical Notes

• Use corrosion-resistant materials (e.g., stainless steel, brass) or protective coatings for water-contact parts.
• Ensure all fittings and hoses comply with referenced IS standards for safety and reliability.
• Maintain high-quality finish to prevent premature wear and corrosion.

graph LR
A[Good Workmanship] --> B[Corrosion Resistance]
B --> C[Durability]
A --> D[Proper Functioning]
D --> E[Safety & Stability]
E --> F[Max Tilt 25°]

This ensures appliance reliability and safety per IS 2930 requirements.

IS 2930 - Accessories & Equipment Key Points

Clause 6.2: Accessories Specifications

• Fire Bell: 250 mm diameter, natural tone carillon, externally mounted, operable from driver's compartment.
• Head Lamps: 2 lamps, ≥ 20 cm diameter.
• Fog Lamps: Low mounted.
• Reversing Light: Positioned to assist reversing.
• Twin Amber Blinker Lights: On top of driving compartment.
• Trafficators: Illuminated indicators visible from driver's panel.
• De-frosting Device & Wind Screen Wipers: For clear visibility.
• Tools: Full set for routine maintenance excluding chassis kit.
• Trailer Tail Light Connection: Twin-wire socket/plug, minimal voltage drop (≤ 2%).
• Search Light: Adjustable flood/beam, detachable with tripod, ≥ 30 m TRS cable.
• Spot Light: Adjustable, near side of driving compartment.
• Inspection Lamp: Protected, plug-in on control panel.
• Electric Fans: 3 swiveling fans powered by vehicle battery (1 driver, 2 rear cabin).

Clause 6.3: Equipment Schedule (Appendix A)

Important Notes:

• Hose, clamps, and bandages conform to relevant IS standards.
• Electrical accessories must ensure minimal voltage drop (≤ 2%) in cables.
• Colours and paints conform to IS specifications for ready-mixed paints.

Summary Diagram: Accessories Layout on Vehicle

graph LR
A[Driver's Compartment] -->|Fire Bell| B[Exterior Mount]
A -->|Head Lamps| C

IS 2930: Testing and Performance Requirements - Key Points

Equipment Schedule (Appendix A, Clause 6.3)

Performance & Testing Notes

• Hose and accessories must conform to referenced IS specifications for durability and performance.
• Hose length and diameter are critical for flow rate and pressure calculations.
• Rounding off of test results must comply with IS 2-1960.
• Units and measurements follow SI units (e.g., pressure in Pascal, force in Newton).

Important SI Units for Testing

Typical Fire Hose Flow Formula

[ Q = A \times v = \frac{\pi d^2}{4} \times v ]

• (Q): Flow rate (m³/s)
• (A): Cross-sectional area (m²)
• (d): Hose diameter (m)
• (v): Velocity of water (m/s)

flowchart LR
    A[Water Source] --> B[Hose Laying Tender]
    B --> C[70 mm Rubber-lined Hose]
    C --> D[Fire Site]
    D --> E[Fire Fighting]

This standard ensures hose laying tenders are equipped and tested for reliable fire fighting over long distances.

IS 2930 - Instruction Book & Maintenance Key Points

1. Instruction Book (Clause 6.1)

• Must include operating and normal maintenance procedures.
• Should have an itemized, illustrated spare parts list with reference numbers for all wearing parts.

2. Accessories & Equipment (Clause 6.2)

• Fire bell (250 mm diameter), externally mounted, operable from inside.
• Head lamps (≥20 cm diameter), fog lamps, reversing light.
• Twin amber blinker lights, trafficators with illuminated indicators.
• Defrosting device, windscreen wipers.
• Tools for routine maintenance (beyond chassis kit).
• Trailer tail light connection (twin-wire socket/plug).
• Search light with tripod and ≥30 m TRS cable (≤2% voltage drop).
• Spot light, inspection lamp with plug socket.
• Three electric swiveling fans powered by vehicle battery.

3. Schedule of Equipment (Appendix A, Clause 6.3)

4. Paint Specification (Clause 5.2)

• Fire red color, Shade No. 536 as per IS:5-1978.
• Paint conforms to IS:2932-1974.

Summary Diagram: Instruction Book & Maintenance Flow

flowchart TD
    A[Instruction Book] --> B[Operating Procedures]
    A --> C[Maintenance Procedures]
    A --> D[Spare Parts List]
    E[Accessories & Equipment] --> F[Fire Bell, Lamps, Fans]
    E --> G[Tools & Connections]
    H[Schedule of Equipment] --> I[Hoses, Clamps, Bandages]
    H --> J[

IS 2930 - List of Equipment to be Provided (Clause 6.3 & Appendix A)

Additional Electrical Equipment (Clause 6.2):

• Fire Bell (250 mm diameter, natural tone)
• Head Lamps (2 nos, ≥ 20 cm diameter)
• Fog Lamps (low mounted)
• Reversing Light
• Twin Amber Blinker Lights
• Trafficators with indicator lights
• Defrosting device & Wind Screen Wipers
• Tools for routine maintenance
• Tail Light connection socket (twin-wire)
• Search Light with tripod & ≥ 30 m TRS cable (max 2% voltage drop)
• Spot Light (adjustable)
• Inspection Lamp (protected type, plug-in)
• Three electric swiveling fans (1 driver cabin, 2 rear cabin)

Notes:

• Hose as per IS:636-1979 (fire fighting hose, rubber lined woven-jacketed).
• Clamps & Bandages as per IS:5612.
• Electrical equipment ensures operational safety and visibility.

flowchart TD
    A[Fire Appliance] --> B[Hoses & Clamps]
    A --> C[Electrical Equipment]
    B --> B1[Hose Delivery 70mm]
    B --> B2[Hose Clamps & Bandages]
    C --> C1[Fire Bell]
    C --> C2[Head & Fog Lamps]
    C --> C3[Search & Spot Lights]
    C --> C4[Fans & Inspection Lamp]

This summary ensures compliance with IS 2930 equipment specifications for fire appliances.