scope:

This document specifies two precision grades for hydraulic performance tests: Class A and Class B. It defines the terms and quantities that are used for waterjets and specifies requirements for test conditions, installations, instruments, method and uncertainty analysis for hydraulic performance tests. Class A stands for the precision level and is applicable for hydraulic model tests and prototype model tests which require higher accuracy. Class A is mainly used for laboratorial research and scientific purposes which require higher measurement accuracy. Class B stands for the engineering level and is applicable for acceptance tests of batch inspections of small and middle-sized prototype models. This document does not include miscellaneous parts of waterjet unit, such as steering and reversing gear, hydraulic system and control system.