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ASME PTC25-2001 Pressure Relief Devices

Standard Number:  ASME PTC25-2001
Title:  Pressure Relief Devices
Language:  English
Replaced by Standard:  ASME PTC25:2008

Status:  Withdrawn
Publisher:  American Society of Mechanical Engineers (ASME)
Price:  
Number of Pages:85  

Description:Applies to the following types of reclosing & non reclosing pressure relief devices; (A) Pressure relief valves; (B) Rupture disk devices (part 1 only) (C); Breaking/shear pin devices (part 1 only); and (D) Fusible plug devices (part 1 only) Other pressure relief devices may be tested provided all parties to the test agree to accept the provisions of this Code.  
Catalog:Foreword
Introduction
1 Object and Scope
1.1 Object
1.2 Scope
1.3 Measurement Uncertainty
1.4 General
2 Definitions and Description of Terms
2.1 Purpose
2.2 General
2.3 Types of Devices
2.4 Parts of Pressure Relief Devices
2.5 Dimensional Characteristics - Pressure Relief Valves
2.6 Dimensional Characteristics - Nonreclosing Pressure
Relief Devices
2.7 Operational Characteristics of Pressure Relief Devices
2.8 Description of Terms
Part 1 Flow Capacity Testing
3 Guiding Principles
3.1 Items on Which Agreement Shall Be Reached
3.2 Qualification of Person Supervising the Test
3.3 Responsibility of Person Supervising the Test
3.4 Test Apparatus
3.5 Preliminary Tests
3.6 Spare Instruments
3.7 Calibration of Instruments
3.8 Metering Sections
3.9 Flow Resistance Test Rings
3.10 Adjustments During Tests
3.11 Records and Test Results
3.12 Measurement Uncertainty
4 Instruments and Methods of Measurements
4.1 General
4.2 Fluid Conditions, Test Conditions, and Instrumentation
4.3 Testing With Steam, Pressure Relief Device Discharging
to Atmospheric Pressure
4.4 Testing With Gas or Air, Pressure Relief Device
Discharging to Atmospheric Pressure
4.5 Testing With Liquids, Pressure Relief Devices
Discharging to Atmospheric Pressure
4.6 Testing With Steam, With Back Pressure Above
Atmospheric
4.7 Testing With Gas or Air, With Back Pressure Above
Atmospheric
4.8 Testing With Liquids, With Back Pressure Above
Atmospheric
4.9 Testing With Gas or Air, Nonreclosing Pressure Relief
Device Flow Resistance Method
4.10 Testing Nonreclosing Pressure Relief Devices to
Determine a Set Pressure for Incompressible Fluids
5 Computations of Results
5.1 Correction of Measured Variables
5.2 Review of Instrument Readings
5.3 Use of Equation Symbols
5.4 Density
5.5 Capacity Calculations
6 Test Summary Report Form
6.1 General Instructions
6.2 Part I: General Information
6.3 Part II: Summary of Results
6.4 Part III: Description of Device Under Test
6.5 Part IV: Observed Data and Computed Results
6.6 Part V: Test Conditions and Corrections Agreements
6.7 Part VI: Test Methods and Procedures
6.8 Part VII: Supporting Data
6.9 Part VIII: Graphical Presentation of Back-Pressure
Test Results
Part II: In-Service and Bench Testing
3 Guiding Principles
3.1 Items on Which Agreement Shall Be Reached
3.2 Qualification of Person Conducting the Test
3.3 Responsibility of Person Conducting the Test
3.4 Test Apparatus
3.5 Preliminary Training
3.6 Spare Instruments
3.7 Calibration of Instruments
3.8 Adjustments During Tests
3.9 Records and Test Results
3.10 Measurement Uncertainty
4 Instruments and Methods of Measurements
4.1 General
4.2 Instrumentation
4.3 In-Service Testing Procedures
4.4 Bench Testing Procedures
4.5 Seat Tightness Test
5 Computation of Results
5.1 Correction of Measured Variables
5.2 Review of Instrument Readings
5.3 Computation of Operational Characteristics
6 Test Summary Report Form
6.1 General Instructions
6.2 Part I: General Information
6.3 Part II: Summary of Results
6.4 Part III: Description of Valve Under Test
6.5 Part IV: Observed Data and Computed Results
6.6 Part V: Contract and Agreed Test Conditions Corrections
6.7 Part VI: Test Methods and Procedures
6.8 Part VII: Supporting Data
Mandatory Appendices
I: SI (Metric) Units and Conversion Factors
II: Examples of Determining Flow Rate Uncertainties
Nonmandatory Appendices
A References
Tables
IA SI (Metric) Units
IB Commonly Used Conversion Factors
II-1 Table of Uncertainty Parameters  
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  437KB
Tile in English:  Pressure Relief Devices

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