Specification For Fireman's Axe
1985 Edition

Summary of Scope and Core Specifications

• Scope: Specifies requirements for fireman's axes focusing on materials, marking, and compliance criteria.

Chemical Composition Details (Clause 3.1)

• Steel used for axe heads must adhere to these chemical limits for strength and longevity.

Marking Requirements (Clause 7.1.1)

• Axes can be stamped with the ISI Certification Mark to indicate conformity with IS standards.

Rounding Rules (Clause 0.3)

• Test and analysis values should be rounded in accordance with IS 2-1960, maintaining the specified significant figures.

This section ensures quality materials, standardized marking, and precise measurement reporting.

Material Requirements for Axe Heads

Steel Chemical Composition (Clause 3.1)

• Low phosphorus and sulphur levels are critical to ensure toughness and weldability.
• Values should be rounded per IS 2:1960 guidelines.

Additional Details

• Handle Grip (Clause 4.4): Must provide a slip-resistant surface, typically knurled.
• Craftsmanship and Finish: Refer to IS 920:1985 for finishing standards.
• Hardness Measurement: Conduct Vickers hardness testing following the relevant IS codes.

Summary

• Axe heads must be forged from steel conforming to the chemical composition above.
• Handles require knurled grips for enhanced safety.
• Follow IS 920 for finishing and IS 926 for material conformity.

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

Shape, Size, and Construction of Fireman's Axe

Highlights from Clause 4

• Design & Measurements: The axe must conform precisely to the dimensions and shape illustrated in Fig. 1 of IS 926 (figure not included here). Typical values include:

  • Overall length: Approximately 600 mm
  • Head length: Around 150 mm
  • Blade width: Near 70 mm
  • Handle diameter: About 30 mm

• Handle Details:

  • Made from vulcanized rubber insulated steel (Clause 3.2).
  • Must meet electrical insulation standards as per Clause 6.

• Assembly:

  • The head is forged steel, heat-treated for durability.
  • The handle must be securely mounted to prevent loosening.

Rounding Procedure (Clause 0.3)

• Testing results should be rounded following IS 2-1960 with the same significant figures as IS 926.

Typical Dimension Table

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

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

Key Points on Workmanship and Finish

• Forging Quality (Clause 5.1):

  • No seams, cracks, or surface imperfections allowed.
  • Edges must be well-formed and smoothly finished as illustrated in Fig. 1.

• Surface Treatment (Clause 5.2):

  • Metal surfaces should have a bright, polished finish.

• Handle Grip (Clause 4.4 & Fig. 1):

  • Grip must be slip-resistant with knurled or chequered texture.
  • Insulated handles are recommended to have a chequered pattern for grip and safety.

• Rounding of Test Results (Clause 0.3):

  • Follow IS 2-1960 for rounding with consistent significant figures.

Summary Table

flowchart LR
  A[Forging] --> B{Defects Present?}
  B -- No --> C[Shape Edges Smoothly]
  C --> D[Apply Bright Finish]
  D --> E[Add Knurled/Chequered Handle Grip]
  E --> F[Compliant Final Product]
  B -- Yes --> G[Reject Forging]

This guarantees durability, safety, and usability as mandated by IS 926.

Mechanical Strength Testing Details

• Steel Composition (Clause 3.1): Steel must have the following composition:

• Impact Test (Clause 6.1):

  • A mild steel rod 5 mm in diameter is placed on a solid support.
  • The axe must strike a single heavy blow without damaging the cutting edge.

• Rounding Off (Clause 0.3):

  • Test outcomes must be rounded per IS 2-1960, matching significant digits.

• Additional Requirements:

  • Handle grip should be knurled for slip resistance.
  • Hardness testing conducted by Vickers method.

This ensures the axe withstands mechanical stresses encountered during use.

Electrical Insulation Evaluation for Axe Handles

Test Parameters (Clauses 6.3 & 3.2)

• Voltage Applied: 20,000 volts (AC or DC as per lab protocol)
• Duration: 60 seconds
• Handle Material: Vulcanized rubber insulated steel handle
• Test Frequency:
  • Initial certification test
  • Annual retesting or after any damage such as cracks or chips
• Precautions: Handle must be clean, dry, and free from oil during use and testing.

Important Notes

• Passing this high-voltage test does not guarantee complete safety; use with additional protective gear like insulated gloves and shock-resistant footwear is essential.
• Wooden handles are strictly prohibited due to lack of reliable insulation.
• Testing must be performed by accredited laboratories.

Insulation Test Summary Table

Recommendations

• Avoid use in wet or oily environments.
• Always use with other electrical protective equipment.

flowchart LR
  A[Fireman's Axe Handle] --> B{Pass Insulation Test?}
  B -->|Yes| C[Safe to Use]
  B -->|No| D[Reject or Repair]
  C --> E{Periodic Testing Required?}
  E -->|Yes| B
  E -->|No| F[Risk of Electric Shock]

This ensures adherence to IS 926 requirements for electrical safety.

Marking and Labeling Requirements

• Essential Markings on Each Axe (Clause 7.1):

  • Manufacturer's name or trademark
  • Inscription stating "Tested to 20,000 volts"
  • Year of manufacture

• ISI Certification Mark (Clause 7.1.1):

  • Optional mark regulated under the Indian Standards Institution (Certification Marks) Act.
  • Indicates adherence to IS standards and quality assurance.
  • Licensing details can be obtained from ISI.

• Rounding Off Rule (Clause 0.3):

  • Follow IS 2-1960 for rounding test values.
  • Maintain the specified number of significant digits.

Marking Summary Table

This promotes traceability, quality control, and standard compliance.

Conformity Criteria According to IS 926

• Rounding of Results: Test outcomes and analysis values must be rounded following IS 2:1960, preserving the same significant digits as specified.

• Sampling Procedure: Every sample must meet all the prescribed requirements of the standard.

• ISI Certification Mark:

  • Signifies compliance under ISI supervision and ongoing quality inspection.
  • Usage is governed by the Indian Standards Institution (Certification Marks) Act.

• Related Standards:

  • IS 920:1985 (Reaffirmed 2000) applies for testing and conformity verification.

Conformity Summary Table

Rounding Example (IS 2:1960)

flowchart TD
  A[Sample Testing] --> B{Complies with Standard?}
  B -- Yes --> C[Apply IS 2 Rounding]
  C --> D[Verify Dimensions & Properties]
  D --> E[Grant ISI Certification]
  B -- No --> F[Reject or Retest]

This process ensures consistent and legally compliant quality assurance.