CFR
- Title 1 - General Provisions
- Title 2 - Grants and Agreements
- Title 3 - The President
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- Title 5 - Administrative Personnel
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- Title 18 - Conservation of Power and Water Resources
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- Title 22 - Foreign Relations
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- Title 45 - Public Welfare
- Title 46 - Shipping
- Title 47 - Telecommunication
- Title 48 - Federal Acquisition Regulations System
- Title 49 - Transportation
- Title 50 - Wildlife and Fisheries
169.627—Compartments containing diesel fuel tanks.
Unless they are adequately ventilated, enclosed compartments or spaces containing diesel fuel tanks and no machinery must be provided with a gooseneck vent of not less than 2 1/2 inches in diameter. The vent opening must not be located adjacent to possible sources of vapor ignition.
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