ASME PTC 19.3 TW 10:2010 Edition
$98.04
ASME PTC 19.3 Thermowells
Published By | Publication Date | Number of Pages |
ASME | 2010 | 56 |
PDF Catalog
PDF Pages | PDF Title |
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5 | CONTENTS |
7 | FOREWORD ACKNOWLEDGMENTS |
8 | COMMITTEE ROSTER |
9 | CORRESPONDENCE WITH THE PTC COMMITTEE |
11 | Section 1 Object and Scope 1- 1 OBJECT 1- 2 SCOPE |
12 | Section 2 Nomenclature |
14 | Section 3 Jurisdiction of Codes 3- 1 REFERENCE STANDARDS AND GOVERNING CODES 3- 2 SPECIFICATION OF THERMOWELLS |
15 | Section 4 Dimensions 4- 1 CONFIGURATIONS 4- 2 DIMENSIONAL LIMITS |
16 | FIGURES Fig. 4-1-1 Schematic Diagram of a Thermow |
17 | Fig. 4-1-2 Examples of Straight-Shank Thermowells TABLES Table 4-1-1 Dimensional Limits for Straight and Tapered Thermowells Within the Scope of This Standard |
18 | Fig. 4-1-3 Examples of Step-Shank Thermowells Table 4-2-1 Dimensional Limits for Step-Shank Thermowells Within the Scope of This Standard |
19 | Fig. 4-1-4 Examples of Tapered Thermowells |
20 | Section 5 Materials 5- 1 GENERAL CONSIDERATIONS |
21 | Section 6 Stress Equations 6- 1 GENERAL CONSIDERATIONS 6- 2 CORROSION AND EROSION |
22 | 6- 3 FLOW- INDUCED THERMOWELL STRESSES Fig. 6-3.1-1 Fluid-Induced Forces and Assignment of Axesfor Calculation of Thermowell Stresses |
23 | 6- 4 STROUHAL NUMBER, DRAG COEFFICIENTS, AND LIFT COEFFICIENT |
24 | 6- 5 NATURAL FREQUENCY OF THERMOWELLS |
25 | Table 6- 5.3- 1 Parameters for Natural Frequency Calculation for Step- Shank Thermowells 6- 6 MOUNTING COMPLIANCE FACTOR Table 6-5.3-1 Parameters for Natural FrequencyCalculation for Step-Shank Thermowells |
26 | 6- 7 UNSUPPORTED LENGTH, DIAMETER, AND FILLET RADIUS |
27 | Fig. 6-6-1 Unsupported Length of Thermowells |
28 | 6- 8 FREQUENCY LIMIT |
29 | Fig. 6-8.1-1 Schematic Indicating Excitation of Resonances When ExcitationFrequency Coincides With the Thermowell Natural Frequency Fig. 6-8.1-2 Schematic Showing the Amplitude Response of a Thermowell Subjected toFluid-Induced Forces as Solid Lines, for In-Line and Transverse Excitation Modes |
30 | 6- 8.3 Frequency Limit for the General Case 6- 8.5 Passing Through the In- Line Critical |
31 | 6- 9 MAGNIFICATION FACTOR 6- 10 BENDING STRESSES |
32 | Fig. 6-10.1-1 Bending Moment, Stress at the Support Plane,and Locations of Maximum Steady-State or Oscillating In-Line Stress |
34 | 6- 11 PRESSURE AND SHEAR STRESSES 6- 12 STEADY- STATE STATIC AND DYNAMIC STRESS LIMITS Fig. 6-10.7-1 Mounting of a Thermowell in an Elbow,With the Tip Facing Downstream |
35 | Fig. 6-10.7-2 Geometry to Be Used in Calculation ofThermowell Ratings Fig. 6-10.7-3 Mounting of a Thermowell in an Elbow,With the Tip Facing Upstream |
36 | Table 6-12.3-1 Allowable Fatigue-Stress Amplitude Limits for Material Class A and Class B |
37 | 6- 13 PRESSURE LIMIT |
38 | Section 7 Overview of Calculations 7- 1 QUANTITATIVE CRITERIA 7- 2 FLUID PROPERTIES 7- 3 FLUID VELOCITY 7- 4 MATERIAL PROPERTIES AND DIMENSIONS |
39 | 7- 5 REYNOLDS AND STROUHAL NUMBERS 7- 6 NATURAL FREQUENCY AT OPERATION TEMPERATURE 7- 7 NATURAL FREQUENCY AT EXPECTED MODE OF OPERATION 7- 8 STEADY- STATE AND DYNAMIC STRESSES 7- 9 ALLOWABLE FATIGUE LIMITS 7- 10 PRESSURE RATING |
40 | Section 8 Examples 8- 1 TAPERED, WELDED THERMOWELL FOR A STEAM- HEADER APPLICATION ( U. S. CUSTOMARY UNITS) |
43 | 8- 2 STEP- SHANK, THREADED THERMOWELL FOR A HOT WATER APPLICATION ( SI UNITS) |
49 | Section 9 Statement of Compliance 9- 1 SPECIFICATION OF A THERMOWELL 9- 2 VELOCITY AND PRESSURE RATINGS |
50 | Section 10 References 10- 1 REFERENCED DOCUMENTS 10- 2 REFERENCED ASME DOCUMENTS |
51 | NONMANDATORY APPENDIX A CONVERSION FACTORS |