The paper discusses the repairable queueing system with a general arrival, where the lifetime of server and the service time are also exponential random variables, the repair time is PH variable.

Where the goods had been sold before its arrival at the port of destination, its value for contribution shall be the net proceeds plus the amount of general average sacrifice.

A general working schedule and a monthly plan shall be negotiated and agreed upon by the Site Representatives of both Parties after the arrival of the Seller's technical personnel at the Job Site.