Questão jurídica principal
Whether the challenge to the preliminary arbitral award was admissible despite not being attacked immediately.
Decisão extraída
The preliminary award could be reviewed together with the final award because it was a prejudicial decision on standing, not a separately appealable final jurisdiction ruling for the asserted ground.
Fundamentação extraída
The arbitrator mainly decided locus standi; the appellant had not clearly denied the arbitrator’s power to decide the matter. Therefore the award was prejudicial, and the alleged hearing defect could be raised only together with the final award.