IEC 60953-1:1990

FOREWORD
PREFACE
INTRODUCTION
Clause
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 tests
   3.4 Preparation of the tests
   3.5 Comparison measurements
   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 measurements
   4.4 Pressure measurements (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
APPENDIX A - Feed-water heater leakage and condenser
             leakage tests
APPENDIX B - Throat tap nozzle
APPENDIX C - The use of flow straighteners in fluid flow
             measurements

Specifies very accurate testing of steam turbines to obtain the level of performance with minimum measuring uncertainty. Defines uniform rules for preparing and carrying out an evaluation of the acceptance tests. Defines also the conditions under which the acceptance tests shall take place. The cost for conducting this test method will generally be justified economically for large and/or proptotype units.