ASME PTC 6S 1988 R2014
$98.04
ASME PTC 6S Procedures for Routine Performance Test of Steam Turbines – Reaffirmed: 2014
| Published By | Publication Date | Number of Pages |
| ASME | 1988 | 137 |
The test procedures of this Report are intended for periodic steam turbine tests. It may also be used for the analysis and supervision of relative performance throughout the life of the turbine. It does not supplant the Code (PTC 6) as the basic procedure for turbine acceptance tests and for the accurate testing of steam turbines to obtain performance level with minimum uncertainty. This Report provides general recommendations for instrumentation and test planning. These recommendations are based on current industry practice for the periodic determination of turbine cycle performance. This Report discusses interpretation of test results and shows typical plots of test data for analysis of turbine performance. It also presents test procedures for selected types of turbine cycles. Each of these procedures contains specific recommendations for instrumentation and method for testing a selected turbine type. Although all possible turbine types are not covered, some typical examples are presented. Combinations of the types presented may be used to cover other arrangements. For each recommended test procedure, the expected value of repeatability is estimated on the basis of current industry experience. This value of repeatability must be used to judge the significance of the indicated level of performance as compared to the chronological trend of past performances.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | Foreword |
| 5 | Committee Roster |
| 7 | CONTENTS |
| 10 | Section 0 introduction |
| 11 | 1 Object, Scope, and Intent |
| 12 | 2 Definitions and Description of Terms |
| 15 | Figures 2.1 Temperature-Entropy Diagrams |
| 18 | 3 Guiding Principles |
| 23 | 4 Instruments and Methods of Measurement |
| 25 | 4.1 (a) Welded Primary Flow Measurement Section 4.1 (b) Inspection Port for Feedwater Flow Nozzle |
| 26 | 4.1 (c) Flanged Primary Flow Measurement Section |
| 27 | 4.2 Alternate Locations for Primary Flow Element |
| 28 | Tables 4.1 Location of Primary Water Flow-Measuring Ellement (Fig . 4.2) |
| 30 | 4.3 Connection Between Calibrated Flow Sections and Manometers |
| 33 | 4. 4(a) Basket Tip 4.4(b) Guide plate |
| 35 | 4.5 Moisture-Sampling Tube |
| 37 | 5 Preliminary Test |
| 38 | 5.1 Typical Turbine Valve-Position Test Data Based on Individual Steam Pressure Measurements |
| 39 | 5.2 Typical Turbine Valve-Position Test Data Based on Individual Valve-Lift Measurements |
| 40 | 5.3 Stage Group Efficiency by Enthalpy-Drop Method |
| 41 | 6 Presentation and Interpretation of Test Results |
| 42 | 6.1 Typical Blading Diagram for Single Stage |
| 43 | 6.2 Typical Expansion Lines for a High-pressure Section Partial- Arc Admission. Condensing Turbine 6.3 Typical Expansion Lines for a High-pressure Section Full-Arc Admission. Condensing Turbine |
| 44 | 6.4 Condensing Turbine Last-Stage Steam Flow Versus Stage Pressure Ratio 6.5 Pressure-Flow Relationship |
| 46 | 6.6 Steam Flow VersusFirst-Stage Nozzle Area 6.7 Stage Pressure Versus Stage Exit Pressure for Intermediate Stages |
| 47 | 6.8 Pressure or Capability Curve Versus Chronological Test Dates |
| 49 | 6.9 Corrected Pressure Deviation Interpretations at Constant Control Valve Opening |
| 50 | 6.10 Stage Pressure Versus Throttle Steam Flow |
| 51 | 6.11 Single-Stage Efficiency Versus Wheel Speed 6.12 Partial-Arc Admission Unit |
| 52 | 6.13 Full-Arc Admission Unit 6.14 Low-Pressure Turbine Section Efficiency Versus Exhaust Steam Flow or Velocity |
| 53 | 6.15 Illustration of Low-Pressure Turbine Effectiveness |
| 58 | 6.16 Relationships of vdr, vcr, and vtr |
| 59 | 7 Test for Nonextraction Condensing Turbine With Superheated Inlet Steam |
| 60 | 7.1 Instrument Locations |
| 64 | 7.2 Generator Electrical Losses |
| 65 | 8 Test for Condensing Turbine, Regenerative Cycle, With Superheated Inlet Steam |
| 66 | 8.1 Instrumentation for Routine Performance Tests for Condensing Turbine, Regenerative Cycle, Superheated Inlet Steam |
| 70 | 8.1 Repeatability of Test Results |
| 71 | 9 Test for Condensing Turbine, Reheat Regenerative Cycle, With Superheated Inlet Steam |
| 73 | 9.1 Instrument Locations |
| 75 | 9.2 Loss Factor Versus Crossover Pressure |
| 83 | 9.3 Throttle Pressure Correction Factors |
| 84 | 9.4 Throttle Temperature Correction Factors |
| 85 | 9.5 Reheat Temperature Correction Factors |
| 86 | 9.6 Reheater Pressure-Drop Correction Factors |
| 87 | 9.7 ExhaustPressure Correction Factors |
| 88 | 9.8 Heat RateVersusLoad |
| 89 | 9.1 Instrument Uncertainties |
| 90 | 9.2 Load-Correction-Factor Uncertainties 9.3 Typical Enthalpy-Drop Uncertainty Values |
| 91 | 9.4 Approximate Repeatability Levels for Reheat-Regenerative Turbines. Enthalpy-Drop-Efficiency Tests |
| 92 | 10 Test Tor Condensing Turbine, Regenerative Cycle, With Saturated Inlet Steam |
| 93 | 10.1 Instrumentation for Routine Performance Tests for Condensing Turbine. Regenerative Cycle, With Saturated Inlet Steam |
| 98 | 10.1 Summary |
| 99 | 11 Test tor Noncondensing Nonextraction Turbine, with Superheated Exhaust |
| 101 | 11.1 Instrument Locations for Noncondensing, Nonextraction Turbines |
| 104 | 11.1 Instrument Uncertainty 11.2 Flow Correction Factor Uncertainty |
| 105 | 11.3 SteamRate Uncertainty 1 1.4 Combined Capability Uncertainty |
| 106 | 12 Test tor Noncondensing Extraction Turbine |
| 107 | 12.1 Repeatability Calculations for Enthalpy-Drop Efficiency |
| 108 | 12.2 Repeatability Calculations for Capability Test |
| 109 | 12.3 Repeatability Calculations for Steam-Rate Test – No Extraction |
| 110 | 12.4 Repeatability Calculations for Steam-Rate Test – With Extraction |
| 111 | 12.1 Typical Diagram – Noncondensing Extraction Turbine |
| 117 | 13 Special Procedures for Indicating Turbine-Cycle Performance Trends |
| 119 | 13.1 Instrument Locations |
| 121 | 13.1 Power Measurement Instrument Uncertainties 13.2 Heat Rate Correction Uncertainties |
| 122 | Appendices A Cycle Correction Curves |
| 123 | Table A- 1 Equations for Use of Curves for Specified Cycle Corrections |
| 124 | Figures A1 Typical Fossil-Fuel Fired Cycle |
| 125 | A2 Final Feedwater Temperature Corrections |
| 126 | A3 Auxiliary Extraction Corrections |
| 127 | A4 Corrections for Auxiliary Extraction from Cold Heat |
| 128 | A5 Corrections for Main Steam and Reheat Steam Desuperheating Flow |
| 129 | A6 Condensate Subcooling Corrections A7 Condenser Make-up Corrections |
| 130 | A8 Typical Light-Water Moderated Nuclear Cycle |
| 131 | A9 Final Feedwater Temperature Corrections (LWM Nuclear Cycle) |
| 132 | A10 Feed Pump Turbine Extraction Correction (LWM Nuclear Cycle) A11 Condensate Subcooling Correction (LWM Nuclear Cycle) |
| 133 | A12 Condenser Make-up Correction (LWM Nuclear Cycle) |
| 134 | B References |
| 135 | Complete Listing of ASME Performance Test Codes |
