General

The rules given in this document are applicable to thermal acceptance tests covering a wide range of accuracy on steam turbines of every type, rating and application. Only the relevant portion of these rules will apply to any individual case.

The rules provide for the testing of turbines, whether 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.

Uniform rules for the preparation, carrying out, evaluation, comparison with guarantee and calculation of measuring uncertainty of acceptance tests are defined in this standard. Details of the conditions under which the acceptance test can take place are included.

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

Object

The purpose of the thermal acceptance tests of steam turbines and turbine cycles described in this document is to verify guarantees given by the manufacturer of the equipment concerning:

Efficiency guarantees

a) Thermal efficiency;

b) Heat rate;

c) Thermodynamic efficiency;

d) Steam rate;

e) Power output.

Capacity guarantees

a) Main steam flow capacity;

b) Maximum power output at specified steam conditions according to IEC 60045-1 (other than steam flow);

c) Nuclear: thermal load capacity of the steam turbine under defined conditions.

The guarantees with their provisions are formulated completely and without contradictions (see 3.4). The acceptance tests may also include such measurements as are necessary for corrections according to the conditions of the guarantee and checking of the results.

Matters to be considered in the contract

Some matters in these rules are to be considered at an early stage. Such matters are dealt with in the following subclauses:

Subclause

1.1 (paragraph 4)

1.2 (paragraph 2)

4.1 (paragraph 3 and 4)

4.3.2 (paragraph 1)

7.6

7.8

7.9 (paragraph 1)