46 CFR 35.01-25 - Sacrificial anode installations - TB/ALL.

§ 35.01-25 Sacrificial anode installations - TB/ALL.

(a) The installation of magnesium sacrificial anodes in cargo tanks utilized for the carriage of flammable or combustible liquids in bulk is prohibited.

(b) A sacrificial anode using an aluminum alloy will be permitted in cargo tanks under the following criteria:

(1) The maximum allowable energy that can be developed by a falling anode shall be 200 foot-pounds.

(2) No anode shall be installed more than 6 feet above the bottom of the tank. Special consideration will be given when structural design prevents the anodes from falling in event of failure of the attachments.

(3) Each anode shall have at least two welded or bolted connections to the supporting structure. Special consideration will be given to proprietary attachments which provide equally safe installations.

(4) The plans of the anode installation and a chemical analysis of the alloy composition shall be submitted for approval. The anode should be magnesium free and the silicon content limited to trace amounts.

(5) The recommended construction of the anode should utilize a mild steel core with necessary attachments. Other types may be used but will require special consideration.

(c) Sacrificial anodes using materials other than those having aluminum and/or magnesium in whole or in part are permitted.

[CGFR 69-72, 34 FR 17482, Oct. 29, 1969]

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code
Presidential Documents

Executive Order ... 12234

Executive Order ... 12777

Title 46 published on 09-May-2017 04:27

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 46 CFR Part 35 after this date.

  • 2015-09-10; vol. 80 # 175 - Thursday, September 10, 2015
    1. 80 FR 54418 - Marine Vapor Control Systems
      GPO FDSys XML | Text
      DEPARTMENT OF HOMELAND SECURITY, Coast Guard
      Final rule; information collection approval.
      The collection of information requirements contained in the July 16, 2013 final rule (78 FR 42596) and approved by the OMB as an amendment to existing collection of information, control number 1625-0060, will be enforced beginning September 10, 2015. The requirements include provisions for VCS certifications, recertifications, periodic operational reviews, approval requests, reviews of operating manuals, failure analyses, operational review letters, and relabeling. These requirements aid the Coast Guard and industry in ensuring industry's regulatory compliance and safe practices in connection with VCSs.
      33 CFR Parts 154, 155, and 156