What must be done when transferring fuel between containers?

When transferring fuel between containers, ensuring proper bonding and grounding is essential to prevent static discharge. This is critical because static electricity can accumulate during the process of transferring fuels, particularly when they are being poured, which may lead to sparks and possible ignition of the fuel vapors present. Bonding means connecting two conductive objects to equalize their electrical potential, while grounding involves connecting to the earth to dissipate any accumulated static charges. This practice is a vital safety measure in the handling of flammable liquids to minimize the risk of fire or explosion.

Utilizing larger hoses may seem beneficial for expediting the transfer process, but it does not address the safety concerns related to static electricity. Similarly, checking temperature or limiting transfers to daytime does not inherently mitigate the risk of static discharge. Thus, the necessity for proper bonding and grounding takes precedence in ensuring safe procedures when handling flammable fuels.