Page 310 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Steam Turbine Best Practices Best Practice 5 .10

Per API and project requirements The shop test is the field baseline!
Confirm all components are installed The test report must be detailed and complete
Confirm all accessories are installed Review the preliminary contents of the report before leaving the
Monitor progress of test, look for leaks, etc. test floor
Do not accept test until all requirements are met Obtain the actual test results
When the final report is received, check the results obtained at
test against the final report
Fig 5.10.6 Mechanical test e key facts Immediately contact the vendor if there are any differences

Fig 5.10.10 Test report – key facts

Must be per API and project requirements
Confirm that the test agenda is followed Shop test checklist
Confirm all components are installed
1. Scope
Confirm that all required instruments are installed
Monitor the progress of the test – look for leaks, etc. - Appropriate industry specs included (ANSI, API,
Do not accept until all requirements are met NEMA, etc.)
- In-house and/or E&C specs included
- Project specific requirements
Fig 5.10.7 Auxiliary system test e key facts
, Performance test , All rotors , One rotor
, Test (equivalent) conditions
, Field (actual) conditions
, Mechanical test , All rotors , One rotor
, Test (equivalent) conditions
Confirm mechanical test acceptance
Confirm auxiliary system test acceptance , Field (actual) conditions
Inspect components and confirm acceptance , Unit test of all equipment (string test)
Agree to any corrective action in writing , No load , Includes auxiliary systems
Accept or reject test – any corrective action requires a retest! , Full load , Does not include auxiliary
systems
Fig 5.10.8 Post test – key facts , Use of job couplings and coupling guards
, Testing of instrumentation, control and protection
devices
At the conclusion of all test activities, there is still important , Auxiliary system test
work to be performed. These items are defined in , Lure oil , Test press , Full press
Figure 5.10.8. , Control oil , Test press , Full press
What happens if the test is not successful? Approximately , Seal oil , Test press , Full press
50% of the tests that I have either run or participated in over my , Seal gas , Test press , Full press
career have not been successful in regards to one component or , Fuel , Test press , Full press
more not meeting test requirements. Possible rejected test , Flow measurement required
action is noted in Figure 5.10.9. , Time base recording of transient events required
, Use of all special tools during test (rotor, removal,
coupling, etc.)
, Shop test attendance (includes assembly and
Immediately provide details to the project team disassembly)
Confirm if field conditions can handle the abnormality , Site reliability , Site maintenance , Site
Determine if the ‘as tested’ machine will meet all reliability
requirements operations
If the decision is to reject, inform the vendor and detail the , Review of instruction book during shop test visit
reasons , Test agenda requirements
Do not accept unrealistic delivery delays , Mutually agreed limits for each measured
parameter
, Issue for approval two months prior to contract
Fig 5.10.9 Rejected test action
test date
2. Pre-test meeting agenda
Finally, do not forget the importance of test report re- - Meet with test department prior to test to:
quirements. The test report is a most important document that , Confirm test agenda requirements
represents the ‘baseline performance’ of the unit and will be , Confirm all test parameters have mutually agreed
a benchmark for field operation acceptability. Test report key established limits
facts are noted in Figure 5.10.10. , Review all instrument calibration procedures

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