ASME PTC 46:1997 pdf download Performance Test Code on Overall Plant Performance
3.1 INTRODUCTION
This Section provides guidance on the conductof overall plant testing, and outlines the steps required to plan, conduct, and evaluate a Code testofoverali piant performance. The Subsections discussthe following:
test plan (Subsection 3.2)test preparations (Subsection 3.3)
conduct of test (Subsection 3.4)calculation and reporting of results (Subsection 3.5)
The Code recognizes that different types of plantsand even different types of tests will have a uniquetest goal and operating mode. The fullowing iliustratethe different test goals considered by the Code andincludes examples.
(a) The test can be run at a specified dispositionwith both load and heat rate determined by the test.An example of this test goal would be valve-pointtesting on a steam cycle plant (including maximumcapability testing) or base-load testing on a combinedcycle plant with or without duct firing.
(b) The test can be run at a specified corrected netpower that is near to the design value of interest.Examples of this test would be an acceptance test ofa steam cycle plant where heat rate is guaranteed ata specific load,or partial-load tests for developmentof heat rate curves.
(c) The test can be run at a specified net powerregardless of ambient or other external conditions. Anexarnpie of this test goal is an acceptance test on aduct-fired combined cycle plant with an output guar-antee over a range of ambient temperafures.
Regardless oi the test goai, the results of a Codetest will be corrected net power and either correctedheat rate or corrected heat input. The test must bedesigned with the appropriale goai in mind to ensureproper procedures are developed，the appropriateoperating mode during the test is followed, and thecorrect performance equations are applied. Section5 provides information on the general performanceequation and variations of the equation to supporitspecific test goals.
3.1.1 Test Boundary and Required Measurements.The test boundary identifies the energy streams whichmust be measured to calculate corrected results.The test boundary is an accounting concept usedto define the streams that must be measured todetermine performance. All input and output energystreams required for test calculalions must be determined with reference to the point at which theycross the boundary. Energy streams within the bound-ary need not be determined uniess they verify baseoperating conditions or unless they relate function-ally to conditions outside the boundary.The methods and procedures of this Code havebeen developed to provide flcxibility in defining thetest boundary for a test. in most cases, the testboundary encompasses al! equipment and systemson the piant site. However, specific test objectivesmay mandate a different test boundary. For examplean acceptance test may be required for a bottomingCycle that is added in the repowering portion of anupgrade.For this Code to apply, the test boundary mustencompass a discrete electric-power-producing heatcycie. This means that the foliowing energy streamsmust cross the boundary: