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Difficulty: MediumStriking Tools

A technician is removing a stubborn locking ring on a vehicle's fuel tank sending unit where combustible fuel vapors are present. Which type of hammer should be used with a non-ferrous drift to eliminate the risk of sparking?

  1. A
    Hardened steel ball-peen hammer
  2. Brass hammerAnswer
  3. C
    Milled-face framing hammer
  4. D
    Cross-peen blacksmith hammer

Answer

A brass hammer must be used because non-ferrous alloys do not create friction sparks when struck, preventing the ignition of volatile fuel vapors.
Brass hammers are made from non-ferrous copper alloys that do not generate incandescent sparks when striking other metals. In the presence of volatile gasoline vapors, utilizing non-sparking striking tools is mandatory to prevent fires and explosions.

Step-by-Step Solution

1
Identify the environmental safety hazard present in the workplace scenario.
The presence of gasoline fumes near an open fuel tank creates an explosive atmosphere that can ignite from friction sparks.
Recognizing volatile atmospheres dictates strict tool and material selection protocols.
2
Evaluate tool head materials regarding spark generation properties.
Ferrous tools made of steel readily produce hot friction sparks on impact, whereas non-ferrous alloys such as brass, bronze, and copper are non-sparking.
Non-ferrous materials absorb impact energy without shedding incandescent particles.
3
Select the proper striking tool matched to the safety requirements.
A brass hammer paired with a brass drift safely delivers impact force without ignition danger.
Ensures complete compliance with shop safety standards when servicing fuel systems.

Key Concept

Non-sparking striking tool selection for hazardous and flammable environments
Estimated Time:45s
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Topics

Striking Tools

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