nature and duration of the preliminary remedy shall be made taking into account the clarity and significance of the violation and the reasonableness of the preliminary remedy in light of the guidelines for a remedy . ( c) The preliminary remedy authorized by the Chairman may he applied by the adversely affected party until extended, modified or terminated by the arbitration panel's final determination . 6 . ( a ) In making its interim relief and final remedy determinations under paragraphs 4 and 5 , the panel shall take into account the following guidelines: (i ) Preference shall be given to measures that are (A) related to the product or products associated with the violation , and ( B) that increase or decrease export ceilings under the Arrangement between the European Coal and Steel Community and the European Economic Community, and the Government of the United States of America concerning trade in certain steel products and the Arrangement on pipes and tubes entered into in 1989 . ---pagebreak--- NV L 368 / 180 Jornal Oficial das Comunidades Europeias 18 . 12 . 89 (ii) If necessary to achieve the objectives of this Agreement with respect to an infringement , the panel may authorize the imposition of temporary duties, or security therefor, on imports of products originating in the territory of the infringing party into the territory of the non-infringing party . In designing such measures , the following shall be taken into account: (A) the gravity and nature of the infringement ( B) the duration thereof ( C) the adverse effects on the interests of the other party and (D)the proportion of US-EC trade in the product or products directly concerned by the infringement . (b) Measures decided by the arbitrators should not be applied cumulatively with national or