ASME PTC 30.1 2007 R2012

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ASME PTC 30.1 Air-Cooled Steam Condensers

Published By	Publication Date	Number of Pages
ASME	2007	88

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Description

This Code provides uniform test methods for conducting and reporting thermal performance characteristics of mechanical draft air-cooled steam condensers (ACC) operating under vacuum conditions. It provides rules for conducting acceptance tests. It also provides guidelines for monitoring thermal performance and conducting routine tests. The test can be used to determine compliance with contractual obligations and the Code can be incorporated into commercial agreements. A test shall be considered an ASME Code Test only if the test procedures comply with those stipulated in this Code and the post-test uncertainty analysis results are in accordance with subsection 1-3. The explicit measurement methods and procedures have been developed to provide a test of the highest level of accuracy consistent with practical limitations for acceptance testing. Any departure from Code requirements could introduce additional uncertainty beyond that considered acceptable to meet the objectives of the Code. This Code provides rules for determining the thermal performance of the referenced equipment with regard to the steam flow capability while meeting any applicable fan power guarantees. This steam flow capability may be alternatively expressed as a deviation from design flow capability, deviation from design turbine backpressure, or as the absolute value of the steam turbine backpressure. This Code also provides procedures for assessing compliance to specified dissolved oxygen and specified condensate temperature. This Code does not address procedures for assessing noise. The Code is not intended for tests of devices for which the process fluid is above atmospheric pressure, devices for process fluids other than steam, devices for single-phase process fluids, wet surface air cooled condensers, natural draft or fan-assisted air cooled condensers, and air cooled condensers with inlet air conditioning in-service.

PDF Catalog

PDF Pages	PDF Title
5	CONTENTS FIGURES TABLES
7	NOTICE
8	FOREWORD
9	COMMITTEE ROSTER
10	CORRESPONDENCE WITH THE PTC 30.1 COMMITTEE
11	Section 1 Object and Scope 1-1 OBJECT 1-2 SCOPE 1-3 UNCERTAINTY
13	Section 2 Definitions and Descriptions of Terms 2-1 SYMBOLS 2-2 DEFINITIONS
14	2-1 Symbols
18	Section 3 Guiding Principles 3-1 INTRODUCTION 3-2 AGREEMENT AMONG PARTIES TO THE TEST 3-2.1 Contractual Agreements
19	3-2.2 Pretest Agreements 3-3 UNCERTAINTY ANALYSIS 3-2.2 Noncondensible Gas Load Limits
20	3-3.1 Pretest Uncertainty Analysis 3-3.2 Post-Test Uncertainty Analysis 3-4 TEST PREPARATIONS 3-4.1 Equipment Inspection 3-4.2 Instrument Calibrations 3-5 ARRANGEMENT OF TEST APPARATUS 3-5.1 Required Measurements
21	3-5 Arrangement of Test Apparatus
22	3-6 TEST PERSONNEL 3-7 METHOD OF OPERATION DURING THE TEST 3-8 CONDUCT OF TEST 3-8.1 Test Modes 3-8.2 Starting and Stopping Tests and Test Runs 3-8.2.1 Starting Criteria. 3-8.2.2 Stopping Criteria.
23	3-8.3 Testing Conditions 3-8.3.1 Test Stabilization. 3-8.3.2 Operating Conditions. 3-8.3.3 ACC Operation. 3-8.4 Adjustments Prior to and During Tests 3-8.4.1 Permissible Adjustments During Stabilization Periods or Between Test Runs. 3-8.4.2 Permissible Adjustments During Test Runs. 3-8.4.3 Nonpermissible Adjustments. 3-8.5 Duration of Runs, Number of Test Runs, and Number of Readings 3-8.5.1 Duration of Test Runs.
24	3-8.5.2 Number of Test Runs. 3-8.5.3 Number of Readings. 3-8.5.4 Preliminary Test Runs.
25	Section 4 Instruments and Methods of Measurement 4-1 INTRODUCTION 4-2 MEASUREMENT OF ENVIRONMENTAL EFFECTS 4-3 LOCATION OF TEST POINTS 4-3.1 General 4-3.2 Condenser Pressure 4-3.3 Steam Temperature 4-3.4 Steam Quality
26	4-3.5 Atmospheric Pressure 4-3.6 Inlet Air Temperature 4-3.7 Wind Velocity 4-3.8 Condensate Flow 4-3.9 Condensate and Makeup Temperatures 4-3.10 Fan Motor Input Power 4-3.11 Condensate Oxygen Concentration
27	4-4 INSTRUMENTATION AND METHODS OF MEASUREMENT 4-4.1 Condenser Pressure 4-4.2 Steam Temperature 4-4.3 Steam Quality 4-4.4 Atmospheric Pressure 4-4.5 Inlet Air Temperature 4-4.6 Wind 4-4.1-1 Basket Tip 4-4.1-2 Guide Plate
28	4-4.7 Condensate Mass Flow 4-4.8 Condensate and Makeup Temperatures 4-4.9 Fan Motor Input Power 4-4.10 Condensate Oxygen Concentration
29	Section 5 Computation of Results 5-1 GENERAL 5-2 REVIEW OF TEST DATA AND TEST CONDITIONS 5-3 REDUCTION OF TEST DATA 5-3.1 Air-Side Conditions Data Reduction 5-3.2 Steam Side Data Reduction 5-4 ACC DESIGN DATA
30	5-5 PARTICULAR CALCULATIONS AT THE GUARANTEE POINT 5-5.1 Computation of LMTD at Guarantee Conditions 5-5.2 Computation of Number of Transfer Units NTU 5-5.3 Computation of Gamma Factor 5-6 ADJUSTMENT OF TEST DATA TO GUARANTEE CONDITIONS 5-6.1 General 5-6.2 ACC Performance Curves 5-6.3 Adjustment for Steam Quality 5-6.4 Adjustment of Atmospheric Pressure
31	5-6.5 Adjustment of Fan Power 5-6.6 Adjustment of ACC Pressure and Inlet Air Temperature 5-6.7 Computation of Capability 5-6.8 Interpretation of Capability in Terms of ACC Pressure 5-6.9 Condensate Temperature Corrections 5-7 CONDENSATE TEMPERATURE 5-8 OXYGEN CONTENT 5-9 TEST UNCERTAINTY
32	5-10 UNCERTAINTY ANALYSIS
34	Section 6 Report of Results
35	NONMANDATORY APPENDICES A SAMPLE CALCULATIONS OF PERFORMANCE A-1 DESIGN DATA A-2 TEST DATA A-2.1 Test Conditions A-2.2 Test Results A-3 CALCULATIONS A-3.1 Design Point Calculations A-3.2 ACC Performance Curves Para. 5-6.2 A-4 CORRECTIONS A-4.1 Correction for Steam Quality Para. 5-6.3 A-4.2 Correction for Atmospheric Pressure Para. 5Ã6.4
36	A-4.3 Correction for Fan Power Para. 5-6.5 A-4.4 Correction for Condenser Pressure and Inlet Air Temperature Para. 5-6.6 A-4.5 Computation of ACC Capability in Terms of Steam Flow Para. 5-6.7
42	B DESCRIPTION OF PERFORMANCE CURVES B-1 INTRODUCTION B-1.1 Description of Curves B-1.2 Format B-1.2.1 Primary Format. B-1.2.2 Alternative Formats. B-1.2.3 Other Representations — Tabular Data. B-1.2.4 Other Representations — Equation Format.
48	C UNCERTAINTY ANALYSIS EXAMPLE C-1 SENSITIVITY FACTORS
52	D DERIVATION OF EXPONENTS mk AND n D-1 INTRODUCTION OF TERMINOLOGY AND DEFINITIONS D-2 CORRECTION FACTORS D-2.1 Exponent mk
53	D-2.2 Exponent n D-2.3 Derivation of Correction Factor for Atmospheric Pressure, fp
54	D-2.4 Correction for Fan Motor Power, ffp
55	E CALCULATION OF THE STEAM QUALITY AT TEST CONDITIONS
57	F TEST CALCULATIONS FOR DISSOLVED OXYGEN DETERMINATION F-1 INTRODUCTION F-2 SAMPLING FREQUENCY F-3 SAMPLE LOCATION F-4 SAMPLE METHODS
59	G DATA SHEETS
64	H REPORTING FORM OF RESULTS OF ACC PERFORMANCE TEST H-1 GENERAL INFORMATION NUMBER OF READINGS H-2 STEAM AND WATER CONDITIONS NUMBER OF READINGS H-3 POWER AND AIR NUMBER OF READINGS
65	I PERFORMANCE MONITORING I-1 INTRODUCTION I-2 PERFORMANCE MONITORING TEST STRUCTURE I-3 PARAMETERS TO MONITOR I-4 MONITORING MEASUREMENTS
66	I-5 CALCULATIONS
68	J ROUTINE PERFORMANCE TEST J-1 OBJECTIVE J-2 GUIDING PRINCIPLES J-3 INSTRUMENTS AND METHODS J-3.1 Inlet Air Temperature J-3.2 ACC Pressure
69	K ENVIRONMENTAL EFFECTS K-1 OBJECTIVES
70	K-2 WIND EFFECTS
82	L ELECTRIC POWER LINE LOSSES L-1 FAN MOTOR POWER L-2 LINE LOSS CORRECTION L-3 EXAMPLE CALCULATION TO DETERMINE LINE LOSS
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