46 C.F.R. § 30.10-15 Combustible liquid—TB/ALL.
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The term combustible liquid means any liquid having a flashpoint above 80° F. (as determined from an open-cup tester, as used for test of burning oils). In the regulations of this subchapter, combustible liquids are referred to by grades, as follows: (a) Grade D. Any combustible liquid having a flashpoint below 150° F. and above 80° F. (b) Grade E. Any combustible liquid having a flashpoint of 150° F. or above. [CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as amended by CGD 73–96, 42 FR 49023, Sept. 26, 1977]
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PART 30—GENERAL PROVISIONS
Subpart 30.10—Definitions
§ 30.10-15 Combustible liquid—TB/ALL.