Questão jurídica principal
Whether the arbitral tribunal had jurisdiction over the claims to stop use of the bank guarantee and recover related costs.
Decisão extraída
Yes. Those claims were based on the EPC contract and therefore fell within the arbitration clause, even though the guarantee relationship with the bank was separate.
Fundamentação extraída
The claim basis was the contract of 3 July 2003, including an alleged contractual duty to invoke the guarantee only for justified claims. The tribunal did not interfere with the bank-guarantee relationship; it only decided rights between the contracting parties under the underlying contract.