ASME PTC 1:2021 pdf download

ASME PTC 1:2021 pdf download General Instructions Performance Test Codes
1-1 DEFINITION AND PURPOSE ASME PTCs provide uniform rules and procedures for the planning, preparation, execution, and reporting of perfor- mance test results. Test results provide numerical characteristics to the performance of equipment, systems, and plants being tested. A performance test is an engineering setup and evaluation where measurements of key parameters are taken under controlled circumstances to provide inputs to calculations. These results can be used to benchmark or ascertain performance at a particular time and can indicate how well the performance of the specified equipment compares to an established design, predicted criteria, or previous test results. Throughout ASME PTC 1, when the term ° equipment” is used with reference to the object of a performance test, it can refer to specific equipment, systems, or entire plants.
1-2 STANDARDS COMMITTEES ASME PTCs are developed by technical committees that are governed, organized, and appointed by the Performance Test Codes Supervisory Committee under the auspices of the Board on Standardization and Testing. Each code-writing committee is organized to include representatives of several interest groups. The qualifications of each member of a code- writing committee are subject to examination and approval by the Supervisory Committee. Members of the code-writing comittees are highly qualified, technically competent professionals, generally members of ASME, who have expertise in the field or in an area of expertise needed by the committee, such as special instrumentation. Each member presents their views on matters under consideration as members of a learned profession, not as representatives of employers or special interest groups.
1-3 SCOPE AND ORGANIZATION 0F PTCs Most ASME PTCs are applicable to a specified type of equipment defined by the Code. There may be several sub- categories of equipment covered by a single code. Types of equipment to which PTCs apply can be classified into the following five broad categories:
(a) power production, energy conversion, and storage
(b) combustion and heat transfer
(c) performance monitoring
(d) fluid handling
(e) emissions The quantities that characterize performance are defined in each code for the equipment within its scope. Absolute performance characteristics determined by adherence to a PTC can be evaluated and compared to design or predicted characteristics or previous test results, or they can be used to benchmark or ascertain performance at a particular time. Some PTCs are written as general reference documents in support of the equipment PTCs. These can be considered as technical reference material for the equipment codes. Three types of reference codes exist. The first type covers guidance and reference information.
It currently consists of ASME PTC 2, which contains standards for terms, units, values of constants, and technical nomenclature. The second type covers instrumentation used in the measurement of thermodynamic or process fluid parameters, such as pressure, temperature, flow, and shaft power. Individual codes referring to process or thermodynamic quantities are known as Performance Test Code Instruments and Apparatus Supplements. They are supplementary to the information on mandatory instrumentation requirements contained in the equipment codes. Instrumentation information in equip- ment test codes supersedes the information given in these supplements, but otherwise these supplements can be incor- porated by reference in equipment test codes where deemed appropriate by the committee. The third type addresses how to analyze the uncertainties associated with measurement of all primary parameters to develop overall test uncertainty. It currently consists of PTC 19.1.