About the 60-min non-ETOPS: Max 60 minutes from an adequate airport at the selected one-engine-inoperative speed in still air and ISA conditions.
The max distance acc to JAR-OPS 1.245 depends on the choice of engines, Air Transat with their RR engines should then have a maximum distance of 430 Nm from an adequate airfield (but Air Transat might not operate acc to JAR-OPS).
About fuel dumping: Swissair donīt have it, Novair donīt have it.