Answer ... (a) Procedure, including evidence?
In the absence of specific provisions on the procedure, established either by the parties or by the rules of the arbitral institution, the arbitrators have wide powers to decide on such matters (Article 21, paragraph 1 of the Arbitration Act). As regards evidence, the arbitrators have ample powers to freely decide on the production of evidence and the order and manner in which it shall be presented by the parties.
(b) Interim relief?
The Arbitration Act provides that the arbitral tribunal has the power to grant interim relief (Article 22). Prior to the commencement of the arbitration, interim relief may be requested directly from a state court. Once the arbitral tribunal has been confirmed, any request for interim relief must be addressed directly to the arbitrators, and they may also review and re-decide any applications previously granted or denied by a state court.
(c) Parties which do not comply with its orders?
In principle, arbitrators do not have coercive powers, unlike judicial authorities. However, an order of the arbitral tribunal may be enforced in court through a request to a judge. Arbitrators also have powers to impose penalties and procedural sanctions on parties that fail to comply with their orders.
(d) Issuing partial final awards?
The Arbitration Act expressly allows arbitrators to render partial awards, pursuant to Article 23, paragraph 1.
(e) The remedies it can grant in a final award?
The Arbitration Act does not specify the kinds of remedies that can be granted in an award. According to the general principles of civil procedure, an award can be of a declaratory, constitutive or condemnatory nature, just like any court judgment.
(f) Interest?
As arbitrators act as judges in fact and in law, pursuant to Article 18 of the Arbitration Act, they have the power to rule on anything relating to the interest applicable in each case.