ASME PTC-18-2002 pdf download.HYDRAULIC TURBINES AND PUMP-TURBINES.
2.1 The code on Definitions and Values, ASME PTC 2, and referenced portions of Supplements on Instruments andApparatus,ASME PTC 19 Series, shall be considered as part of this Code. Their provisions shall apply unless otherwise specified. Common terms, definitions, sym- bols and units used throughout this Code are listed in this section. Specialized terms are explained where they appear. The following definitions apply to this Code: (a) Machine means any type of hydraulic turbine or pump-turbine. (b) Turbine means a machine operating in the turbine mode. (c) Pump means a machine operating in the pumping mode. (d) Pump-turbine is a machine that is capable of operating as a pump and as a turbine. (e) Runner means turbine runner or pump impeller.(f) Run comprises the readings and/or recordings suf- ficient to calculate performance at one operating con- dition. (g) Point is established by one or more consecutive runs at the same operating conditions and unchanged wicket gate, blade or valve openings. (h) Test comprises a series of points and results ade- quate to establish the performance over the specified range of operating conditions. (i) Parties to the Test for acceptance tests, are those individuals designated in writing by the purchaser and machine suppliers to make the decisions required in this Code. Other agents, advisors, engineers, etc. hired by the Parties to the Test to act on their behalf or otherwise, are not considered, by this Code, to be Parties to the Test.
3.4 Prior to conducting the test, a written agreement shall be reached by the Parties to the Test as to the specific object and scope of the test and to the test procedures. These shall include the required accuracy of measure- ment methods and test instrumentation necessary to provide overall test results within the limits of uncer- tainty required by Section 1.2 of this Code. The agreement shall also reflect the requirements of any applicable specification. Any discernible omissions or ambiguities as to any of the conditions shall be resolved before the test is started. Typical items on which written agreement shall be reached are: (a) Object of test and type of test. (b) Operating conditions. (c) Limits of test uncertainty. (d) Test schedule and scope (which machines are to be tested and when). (e) Flow rate measurement device(s) and method to be used. (f) Methods to be used for measurement of speed, head, and power. (g) Method to be followed for maintaining constant operating conditions during a test run, including per- missible fluctuation of measured variables. (h) Selection of types and locations of instruments, data acquisition and processing equipment, and tech- niques for computing results. (i) Methods of calibrating instruments before and after the test. (j) Organization of test personnel. (k) Method of determining acceptable condition of the machine prior to testing. (l) Need for and application of results of any index tests. (m) Duration ofoperation attestload before testread- ings commence. (n) Duration of runs including start and stop proce- dures. (o) Frequency of observations and number of runs and points.ASME PTC-18 pdf download.