Annulment action filed against a procedural order. Decision of the arbitral tribunal with allegedly meritorious content. Alleged equivalence of a procedural order to a partial award. Inadmissibility. Pronouncement of the arbitrator that merely recognizes the jurisdiction of the arbitral tribunal, without resolving the claim on the merits. Decision not subject to challenge by means of an annulment action (arts. 32 and 33 of the Brazilian Arbitration Act):