1. LawStack
  2. Title 46 - Shipping
  3. Chapter I - COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
  4. Subchapter F - MARINE ENGINEERING
  5. Part 64 - MARINE PORTABLE TANKS AND CARGO HANDLING SYSTEMS
  6. Subpart C - Pressure Relief Devices and Vacuum Relief Devices for MPTs
  7. 46 CFR § 64.65
46 CFR § 64.65
Vacuum relief device
April 15, 2021
CFR

(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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§ 64.63 Minimum emergency venting capacity
Next
§ 64.67 Shutoff valve

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