BS 5968:1980

Foreword
Cooperating organizations
Methods
Section one. General
1 Scope
2 References
3 Notation and units
Section two. General principles for tests
4 Items on which agreement is mandatory
5 Tolerance on test steam or heat rate
6 Preparation for the tests
7 Preliminary tests
8 Duration
9 Constancy of test conditions
10 Measuring instruments
11 Starting and stopping
12 Operating conditions
13 Corrections
14 Steam tables
15 Mechanical vibration tests
16 Noise tests
Section three. Instruments and methods of measurement
17 General
18 Necessary instruments
19 Mechanical output
20 Electrical output
21 Measurement of electrical power
22 Electrical instrument connections
23 Electrical instruments
24 Flow measurement
25 Duration of consumption tests
26 Water stored in system
27 Isolation of turbine
28 Secondary flows and various leakages
29 Instruments for pressure measurement
30 Connecting piping for vacuum gauges
31 Exhaust pressure measurements
32 Mercury columns
33 Barometers
34 Temperature measurements
35 Circulating water temperatures
36 Condenser circulating water flow
37 Rotational speed measurements
Section four. Computation of results
38 Introduction
39 Total steam
40 Corrections for steam or heat rate test
41 Corrections for variation in operating conditions
42 Corrections for capability test
43 Steam or heat rate
44 Weighted average steam or heat rate
Section five. Governor tests
45 Speed responsive governor tests
Section six. Report of tests
46 Summary of plant tested
47 Brief report of test results
48 Discussion of test
49 Specified operating conditions
50 Tabulation of test mean observations derived from
    log sheets
51 Tabulation of turbine performance corrected to
    specified operating conditions and composition with
    guarantee
52 Governor tests
Tables
1 Quantities, symbols and units
2 Maximum permissible deviations from average test
    conditions
Figures
1 Diagram of connections for measuring electrical
    power in a three-phase circuit using the three-
    wattmeter method
2 Diagram of connections for measuring electrical
    power in a three-phase circuit using the two-
    wattmeter method

Provides the basis for acceptance tests for back pressure, mixed pressures, condensing and pass-out steam turbines as used in industrial and marine applications, excluding marine propulsion.