Emergency relief sought prior to the main claim in a rescissory action against a partial award, seeking a preliminary injunction to suspend the effects of the arbitral award, which had ordered the joinder of a third party in the arbitration proceedings. Special appeal granted, allowing the emergency relief. Understanding that the partial award is distinct and independent from the final arbitral award. Necessity of filing also distinct and independent rescissory actions, with observance of autonomous limitation periods. The subject matter of the rescissory action against the partial award is not affected by the rendering of the final arbitral award: