3.6　Spare Parts

3.6.1　The spare parts shall be interchangeable.

3.6.2　Inspection，test and acceptance of spare parts shall be carried out in accordance with the corresponding technical requirements or specifications for the rotary machines.

3.6.3　The requirements and number of spare parts shall be determined based on the following principles:

1　The criticality and operation cases of rotary machines in the plant，and installed spare required or not；

2　The criticality of each part in rotary machine，the proportion of the price of expensive part out of the loss of plant shutdown due to damage of the part；

3　The interchangeability of wear parts of same or similar rotary machines or the rotary machines in one train；

4　The availability of the spare parts in the region or country where the contract plant is sited，and the procurement and the delivery time of the spare parts.