Vacuum relief device.

  1. Law
  2. CFR 46
  3. Shipping
  4. Coast Guard, Department of Homeland Security
  5. Marine Engineering
  6. Marine Portable Tanks and Cargo Handling Systems
  7. Pressure Relief Devices and Vacuum Relief Devices for MPTs
  8. Vacuum relief device.

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§ 64.65 Vacuum relief device.

(a) Each MPT that is designed for an external pressure of less than 7.5 psig must have a vacuum relief device.

(b) A vacuum relief device for an MPT must -

(1) Open at an external pressure of not less than 3 psig; and

(2) Have an opening with a cross-section of 0.44 square inch or more.

[CGD 84-043, 55 FR 37410, Sept. 11, 1990]


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