46 C.F.R. § 153.1106 Cleaning agents.
Title 46 - Shipping
No tank cleaning agent other than water or steam may be used to clean an NLS residue from a cargo tank except as prescribed in the approved Procedures and Arrangements Manual.
Title 46: Shipping
PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS
Subpart C—Operations
Approval of Surveyors and Handling of Categories A, B, C, and D Cargo and NLS Residue
§ 153.1106 Cleaning agents.