HURRICANE FRAN'S predicted arrival on the Carolina coastline last week prompted industry operators to spring into preparatory action. Food Lion, Salisbury, N.C., and Piggly Wiggly, Charleston, S.C., were among companies that started preparing for the worst early in the week by increasing shipments of water, batteries, bread and other emergency items, according to executives. "We have been working on this since we knew for sure it would hit us," said Cecily N. Durrett, Food Lion's spokeswoman. "You can't waste any time once you know." Durrett added that the chain heeded voluntary evacuation orders and closed 13 of its South Carolina stores on the evening of Sept. 4. Piggly Wiggly was busy last week running double shipments to its stores and making arrangements to fill grocery needs of local shelters and the Red Cross, said Rita Postell, manager of community and employee relations. "We really got hit in 1989 with [Hurricane] Hugo, so we had everything ready to go when we heard this was coming," she said.