Specification For Fireman's Axe

IS 926: Scope & Key Specifications Summary

• Scope: Covers specifications for axes, focusing on materials, marking, and conformity.

Key Material Specifications (Clause 3.1)

• Steel for axe heads must meet these chemical composition limits to ensure strength and durability.

Marking (Clause 7.1.1)

• Axes may bear the ISI Certification Mark, indicating compliance with IS standards and quality control.

Rounding Off Values (Clause 0.3)

• Final test or analysis values must be rounded as per IS 2-1960, retaining the same significant figures as specified.

This ensures material quality, standardized marking, and accurate reporting for axes under IS 926.

IS 926: Material Requirements for Axe Head

Chemical Composition of Steel (Clause 3.1)

• Phosphorus and Sulphur must be kept low to ensure good toughness and weldability.
• Values are rounded per IS 2:1960 rules.

Additional Specifications

• Handle Grip (Clause 4.4): Must be non-slippery, typically knurled.
• Workmanship and Finish: Refer IS 920:1985 for quality and finishing standards.
• Hardness Testing: Use Vickers hardness method as per the relevant IS standard.

Summary

• Use forged steel with the above chemical limits for axe heads.
• Ensure handle grip is knurled for safety.
• Follow IS 920 for finish and IS 926 for material compliance.

flowchart TD
    A[Steel Forging] --> B[Chemical Composition Check]
    B --> C{Within IS 926 Limits?}
    C -->|Yes| D[Heat Treatment & Hardness Test]
    C -->|No| E[Reject Material]
    D --> F[Handle Grip: Knurled]
    F --> G[Final Inspection & Finish (IS 920)]

IS 926: Fireman's Axe – Shape, Dimensions, and Construction

Key Points from Clause 4 (Shape, Dimensions, and Construction)

• Shape & Dimensions:
  The fireman's axe must conform exactly to the shape and dimensions shown in Fig. 1 of IS 926.
  (Unfortunately, the figure is not provided here, but it typically includes:)

  • Overall length: ~600 mm (approximate typical length)
  • Head length: ~150 mm
  • Blade width: ~70 mm
  • Handle diameter: ~30 mm

• Handle Material:

  • Must be vulcanized rubber insulated handle (Clause 3.2)
  • Capable of withstanding insulation tests per Clause 6 (electrical insulation properties)

• Construction:

  • The axe head is usually forged steel, heat-treated for strength and durability.
  • The handle should be securely fixed to the head to avoid loosening during use.

Rounding Off Test Values (Clause 0.3)

• Follow IS 2-1960 for rounding off test results with the same significant figures as specified in IS 926.

Summary Table (Typical Dimensions)

flowchart LR
    A[Fireman's Axe] --> B[Head: Forged Steel]
    A --> C[Handle: Vulcanized Rubber]
    B --> D[Blade: ~70 mm wide]
    B --> E[Head length: ~150 mm]
    C --> F[Length: ~600 mm]
    C --> G[Diameter: ~30 mm]

Note: Refer to IS 926 Fig. 1 for exact dimensions and shape details.

IS 926: Workmanship and Finish Key Points

• Clause 5.1: Forging Quality

  • Forgings must be free from seams, cracks, and surface defects.
  • Edges should be well-shaped and smoothly finished as per Fig. 1 (Fireman's Axe).

• Clause 5.2: Surface Finish

  • Metal surfaces of the axe shall have a bright finish (clean, polished appearance).

• Handle Grip (Clause 4.4 & Fig. 1)

  • Handle grip must be non-slippery, typically with a knurled or chequered surface for firm grip.
  • Insulating handles should have a chequered pattern for safety and grip.

• Rounding Off Results (Clause 0.3)

  • Test results should be rounded off per IS 2-1960, retaining the same significant figures as specified.

Summary Table:

flowchart LR
A[Forging] --> B{Defects?}
B -- No --> C[Edges shaped & smooth]
C --> D[Bright finish]
D --> E[Handle grip: knurled/chequered]
E --> F[Final product: Complies with IS 926]
B -- Yes --> G[Reject forging]

This ensures durability, safety, and usability per IS 926 standards.

IS 926: Mechanical Strength Tests - Key Specifications

• Material for Axe Head (Clause 3.1):
  Steel forging must meet:

  Constituent	Percent (%)
  Carbon	0.75 to 0.85
  Manganese	0.50 to 0.80
  Phosphorus	≤ 0.050
  Sulphur	≤ 0.050
  Silicon	≤ 0.250

• Workmanship Test (Clause 6.1):

  • A 5 mm dia mild steel bar is placed on a solid foundation.
  • Axe must deliver a single heavy blow without the cutting edge showing damage.

• Rounding Off (Clause 0.3):

  • Test results must be rounded as per IS 2-1960, matching the significant figures of the specified value.

• Additional Notes:

  • Handle grip must be knurled (non-slippery) (Clause 4.4).
  • Hardness testing can be done using Vickers hardness test method.

This ensures the axe's mechanical strength and durability under impact conditions.

IS 926: Electrical Insulation Tests for Fireman's Axe Handles

Key Specifications (Clause 6.3 & 3.2)

• Test Voltage: 20,000 V (AC or DC as per lab standard)
• Test Duration: 60 seconds
• Material: Vulcanized rubber insulated handle
• Testing Frequency:
  • Initial test before use
  • Periodic re-tests at least annually or if handle is damaged (cracked/chipped)
• Precautions: Handle must be dry and free from oil during use and testing.

Important Notes

• Passing the 20,000 V test does not guarantee absolute safety; use with additional PPE like insulated gloves and shock-proof boots.
• Wooden handles provide no reliable electrical insulation and are discouraged.
• Testing must be done by a recognized laboratory.

Summary Table for Insulation Test

Additional Recommendations

• Avoid use in wet/oily conditions.
• Use alongside other electrical safety gear.

flowchart LR
    A[Fireman's Axe Handle] --> B{Insulation Test}
    B -->|Pass 20,000 V for 60s| C[Safe for Use]
    B -->|Fail| D[Reject or Repair]
    C --> E{Periodic Testing?}
    E -->|Yes, annually or if damaged| B
    E -->|No| F[Risk of Electric Shock]

This ensures compliance with IS 926 electrical insulation requirements for fireman's axe handles.

IS 926 - Marking and Labeling of Axes: Key Points

• Mandatory Markings on Each Axe (Clause 7.1):

  • Manufacturer's name or trade-mark
  • Test voltage: "Tested to 20,000 volts"
  • Year of manufacture

• ISI Certification Mark (Clause 7.1.1):

  • Optional marking governed by the Indian Standards Institution (Certification Marks) Act.
  • Indicates compliance with IS standards under strict quality control and inspection.
  • Licensing details available from ISI.

• Rounding Off Test Values (Clause 0.3):

  • Follow IS : 2-1960 for rounding off.
  • Maintain the same number of significant digits as the specified value.

Summary Table for Marking Requirements

This ensures traceability, quality assurance, and compliance with IS standards for axes.

IS 926 - Criteria for Conformity: Key Points

• Rounding Off:
  Final test or analysis values must be rounded as per IS 2:1960.

  • Retain the same number of significant digits as the specified value.

• Sampling:
  Each sample shall be examined against all requirements of the standard.

• ISI Certification Mark:

  • Indicates compliance under ISI supervision and continuous quality checks.
  • Usage governed by Indian Standards Institution (Certification Marks) Act.

• Reference Standards:

  • IS 920:1985 (Reaffirmed 2000) is relevant for conformity checks.

Summary Table for Conformity Check

Rounding Off Rule (IS 2:1960) Example:

flowchart TD
    A[Sample Testing] --> B{Meets Standard?}
    B -- Yes --> C[Apply IS 2 Rounding]
    C --> D[Check Dimensions & Properties]
    D --> E[Grant ISI Certification Mark]
    B -- No --> F[Reject Sample / Re-test]

This ensures consistent, legally compliant product quality verification under IS 926.