Editorial Note on Part 148
Editorial Note: Nomenclature changes to part 148 appear by USCG-2012-0832, 77 FR 59783, Oct. 1, 2012.

§ 148.205 Ammonium nitrate and ammonium nitrate fertilizers. ( a ) This section applies to the stowage and transportation in bulk of ammonium nitrate and the following fertilizers composed of uniform, non-segregating mixtures containing ammonium nitrate: ( 1 ) Ammonium nitrate containing added organic matter that is chemically inert towards the ammonium nitrate; containing at least 90 percent ammonium nitrate and a maximum of 0.2 percent of combustible material (including organic material calculated as carbon); or containing less than 90 percent but more than 70 percent of ammonium nitrate and a maximum of 0.4 percent combustible material;
( 2 ) Ammonium nitrate with calcium carbonate and/or dolomite, containing more than 80 percent but less than 90 percent of ammonium nitrate and a maximum of 0.4 percent of total combustible material;
( 3 ) Ammonium nitrate with ammonium sulfate containing more than 45 percent but a maximum of 70 percent of ammonium nitrate and containing a maximum of 0.4 percent of combustible material; and
( 4 ) Nitrogen phosphate or nitrogen/potash type fertilizers or complete nitrogen/phosphate/potash type fertilizers containing more than 70 percent but less than 90 percent of ammonium nitrate and a maximum of 0.4 percent of combustible material.
( b ) No material covered by this section may be transported in bulk unless it demonstrates resistance to detonation when tested by one of the following methods: ( 1 ) Appendix 2, Section 5, of the IMSBC Code (incorporated by reference, see § 148.8);
( 2 ) Test series 1 and 2 of the Class 1 (explosive) in the UN Manual of Tests and Criteria, Part I (incorporated by reference, see § 148.8); or
( 3 ) An equivalent test satisfactory to the Administration of the country of shipment.
( c ) Before loading a material covered by this section— ( 1 ) The shipper must give the master of the vessel written certification that the material has met the test requirements of paragraph (b) of this section;
( 2 ) The cargo hold must be inspected for cleanliness and free from readily combustible materials;
( 3 ) Each cargo hatch must be weathertight as defined in § 42.13-10 of this chapter;
( 4 ) The temperature of the material must be less than 55 °C (131 °F); and
( 5 ) Each fuel tank under a cargo hold where the material is stowed must be pressure tested before loading to ensure that there is no leakage of manholes or piping systems leading through the cargo hold.
( d ) Bunkering or transferring of fuel to or from the vessel may not be performed during cargo loading and unloading operations involving a material covered by this section.
( e ) When a material covered by this section is transported on a cargo vessel— ( 1 ) No other material may be stowed in the same hold with that material;
( 2 ) In addition to the segregation requirements in § 148.140 of this part, the material must be separated by a complete cargo compartment or hold from readily combustible materials, chlorates, chlorides, chlorites, hypochlorites, nitrites, permanganates, and fibrous materials; and
( 3 ) The bulkhead between a cargo hold containing a material covered by this section and the engine room must be insulated to “A-60” class division or an equivalent arrangement to the satisfaction of the cognizant Coast Guard Captain of the Port or the Administration of the country of shipment.