According to Article 7 (paragraph 2 of ADN) and to section 184.108.40.206 of the annexed Regulations, the competent authority of each Contracting Party shall retain the right to issue special authorizations to a carrier or a consignor for the international carriage in tank vessels of dangerous substances, including mixtures, the carriage of which in tank vessels is not permitted under the provisions concerning carriage in the annexed Regulations, subject to compliance with the procedure set out in section 220.127.116.11.
The special authorization shall be valid, due account being taken of the restrictions specified therein, for the Contracting Parties and on whose territory the transport operation will take place, for not more than two years but unless it is repealed at an earlier date. With the approval of the competent authorities of these Contracting Parties, the special authorization may be renewed for a period of not more than one year.
The special authorization shall include a statement concerning its repeal at an earlier date and shall conform to the model established by the Administrative Committee.
According to section 18.104.22.168 of the annexed Regulations, the procedure is as follows:
The carrier or the consignor shall apply to the competent authority of a Contracting Party on whose territory the transport operation takes place for the issue of a special authorization.
The application shall include the particulars mentioned in these Regulations. The applicant shall be responsible for the accuracy of the particulars.
The competent authority shall consider the application from the technical and safety point of view. If it has no reservations, it shall draw up a special authorization in accordance with the criteria established by the Administrative Committee and immediately inform the other competent authorities involved in the carriage in question. The special authorization shall be issued only when the authorities concerned agree to it or have not expressed opposition within a period of two months after receiving the information. The applicant shall receive the original of the special authorization and keep a copy of it on board the vessel(s) involved in the carriage in question. The competent authorities shall immediately communicate to the Administrative Committee the applications for special authorizations, the applications rejected and the special authorizations granted.
If the special authorization is not issued because doubts or opposition have been expressed, the Administrative Committee shall decide whether or not to issue a special authorization.
Update of the list of substances authorized for carriage in tank vessels
The Administrative Committee shall consider all the special authorizations and applications communicated to it and decide whether the substance is to be included in the list of substances in these Regulations, authorized for carriage in tank vessels.
If the Administrative Committee enters technical or safety reservations concerning the inclusion of the substance in the list of substances of these Regulations authorized for carriage in tank vessels or concerning certain conditions, the competent authority shall be so informed. The competent authority shall immediately withdraw or, if necessary, modify the special authorization.
The list of approved special authorizations is as follows:
1. Chemgas Shipping, Rotterdam, for the carriage of UN No. 2187 CARBON DIOXIDE, REFRIGERATED LIQUID, proposed by the Government of the Netherlands, approved by the ADN Administrative Committee at its fourth session (28-29 January 2010) (ECE/ADN/8, para. 15).
2. Shell Chemicals Europe B.V. for the carriage of UN No. 3295 HYDROCARBONS, LIQUID, N.O.S. CONTAINS ISOPRENE AND PENTADIENE (vp 50> 110 kPa), STABILIZED, proposed by the Government of the Netherlands, approved by the ADN Administrative Committee at its fourth session (28-29 January 2010) (ECE/ADN/8, para. 15).