BS EN 60953-1:1996

Foreword
Introduction
1 Scope and object
1.1 Scope
1.2 Object
1.3 Matters to be considered in the contract
2 Units, symbols, terms and definitions
2.1 General
2.2 Symbols, units
2.3 Subscripts, superscripts and definitions
2.4 Definition of guarantee values and test results
3 Guiding principles
3.1 Advance planning for test
3.2 Preparatory agreements and arrangements for tests
3.3 Planning of the tests
3.4 Preparation of the tests
3.5 Comparison measurements
3.6 Settings for tests
3.7 Preliminary tests
3.8 Acceptance tests
3.9 Repetition of acceptance tests
4 Measuring techniques and measuring instruments
4.1 General
4.2 Measurement of power
4.3 Flow measurement
4.4 Pressure measurement (excluding condensing turbine
      exhaust pressure)
4.5 Condensing turbine exhaust pressure measurement
4.6 Temperature measurement
4.7 Steam quality measurement
4.8 Time measurement
4.9 Speed measurement
5 Evaluation of tests
5.1 Preparation of evaluation
5.2 Computation of results
6 Correction of test results and comparison with
      guarantee
6.1 Guarantee values and guarantee conditions
6.2 Correction of initial steam flow capacity
6.3 Correction of maximum output
6.4 Correction of thermal and thermodynamic efficiency
6.5 Definition and application of correction values
6.6 Correction methods
6.7 Variables to be considered in the correction
6.8 Guarantee comparison
Appendices
A (informative) Feedwater heater leakage and
      condenser leakage tests
B (normative) Throat tap nozzle
C (normative) The use of flow straighteners in fluid
      flow measurements
ZA (normative) Normative references to international
      publications with their corresponding European
      publications

Gives rules that apply primarily to thermal acceptance tests with high accuracy for condensing steam turbines driving generators for electric power services. Describes thermal acceptance tests that will verify any guarantees given by the manufacturer of the plant concerning: turbine thermodynamic efficiency or steam rate or power output at specified steam flow conditions; turbine plant thermal efficiency or heat rate; main steam flow capacity and/or maximum power output.

The rules given in this standard are applicable primarily to thermal acceptance tests with high accuracy for condensing steam turbines driving generators for electric power services. Some of the provisions of these rules are relevant to turbines for applications other than driving electric power generators.

These rules provide for the testing of turbines operating with either superheated or saturated steam. They include measurements and procedures required to determine specific enthalpy within the moisture region and describe precautions necessary to permit testing while respecting radiological safety rules in nuclear plants.

These rules contain information also applicable to the testing of back-pressure turbines, extraction turbines and mixed-pressure turbines. Only the relevant portion of the rules need apply to any individual case.

Uniform rules for the preparation, carrying out and evaluation of the acceptance tests are defined in this standard. Details of the conditions under which the acceptance tests shall take place are included.

Should any complex or special case arise not covered by these rules, appropriate agreement shall be reached by manufacturer and purchaser before the contract is signed.