5.6　Rotors

5.6.1　Rotors shall conform to clause 5.6 in ISO 13709-2003(API Std 610-2004).

5.6.2　When the impeller tip speed values exceed the limit values shown in Table 2,the vendor shall provide the design parameters,material documents,and design standards to the purchaser for approval.

Table 2　Limit values for impeller tip speed

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