TITLE 46 - SHIPPING

CHAPTER I - COAST GUARD, DEPARTMENT OF HOMELAND SECURITY

SUBCHAPTER F - MARINE ENGINEERING

PART 64 - MARINE PORTABLE TANKS AND CARGO HANDLING SYSTEMS

subpart c - PRESSURE RELIEF DEVICES AND VACUUM RELIEF DEVICES FOR MPTS

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 84043, 55 FR 37410, Sept. 11, 1990]