IEC 60953-2:1990

FOREWORD
PREFACE
INTRODUCTION
1 Scope and object
   1.1 Scope
   1.2 Object
   1.3 Matters to be considered in the contract
2 Units, symbols, terms and definitions
   2.1 General
   2.2 Symbols, units
   2.3 Subscripts, superscripts and definitions
   2.4 Definition of guarantee values and test results
3 Guiding principles
   3.1 Advance planning for test
   3.2 Preparatory agreements and arrangements for
        tests
   3.3 Planning of the test
   3.4 Preparation of the tests
   3.5 Comparison measurement
   3.6 Settings for tests
   3.7 Preliminary tests
   3.8 Acceptance tests
   3.9 Repetition of acceptance tests
4 Measuring techniques and measuring instruments
   4.1 General
   4.2 Measurement of power
   4.3 Flow measurement
   4.4 Pressure measurement (excluding condensing
        turbine exhaust pressure)
   4.5 Condensing turbine exhaust pressure
        measurement
   4.6 Temperature measurement
   4.7 Steam quality measurement
   4.8 Time measurement
   4.9 Speed measurement
5 Evaluation of tests
   5.1 Preparation of evaluation
   5.2 Computation of results
6 Correction of test results and comparison with
   guarantee
   6.1 Guarantee values and guarantee conditions
   6.2 Correction of initial steam flow capacity
   6.3 Correction of maximum output
   6.4 Correction of thermal and thermodynamic
        efficiency
   6.5 Definition and application of correction
        values
   6.6 Correction methods
   6.7 Variables to be considered in the correction
   6.8 Guarantee comparison
   6.9 Deterioration of turbine performance (ageing)
7 Measuring uncertainty
   7.1 General
   7.2 Determination of measuring uncertainly of
        steam and properties
   7.3 Calculation of measuring uncertainty of output
   7.4 Determination of measuring uncertainty of
        mass flow
   7.5 Calculation of measuring uncertainty of results
APPENDIX A - Feedwater heater leakage and condenser
             leakage tests
APPENDIX B - Throat tap nozzle
APPENDIX C - Evaluation of multiple measurements,
             compatibility
APPENDIX D - Mass flow balances
APPENDIX E - Typical generalized correction curves for
             correction of test results according to
             guarantee conditions
APPENDIX F - Short statistical definition of measuring
             uncertainty and error propagation in
             acceptance tests
APPENDIX G - Calculation of measuring uncertainly of
             output - Electrical measurement

Provides for acceptance tests of steam turbines of various types and capacities with appropriate measuring uncertainty. Only the relevant portion of these rules will apply to any individual case. The resulting measuring uncertainty of the test result is determined by calculating methods presented in this standard.