Page 46 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Project Best Practices Best Practice 1 .13
After conducting the appropriate audits, prompt follow-up
regarding any action items is required to confirm the acceptance Lube/seal oil system
of the supplier and/or sub-suppliers, and to maintain the project 1. Introductions
schedule. Figure 1.12.3 presents these facts. 2. Purpose of meeting
2.1 Review study results, past modifications/failures and
recommendations to assist client in resolving seal oil
delta pressure trips on the subject compressor.
2.1.1 Supply client with recommendations, modifications
Prepare an executive summary of conclusions required and cost and delivery.
Immediately present to the project team for approval 3. Results of studies performed in the field
Inform vendors of results 3.1 Client field reliability study
Prepare vendor follow up meeting agenda 3.2 Vendor engineering study
Note action required and follow up as required to maintain 4. Review seal design and requirements
project schedule 4.1 Review seal components and function
4.1.1 Upgrades?
4.1.2 Modifications?
Fig 1.12.3 Design audit summary and follow up action 5. Review seal oil system component design
5.1 Sizing of components (pumps, coolers, filters, reservoir, etc.)
5.2 Review valve selection and sizing (including Cv)
After completion of the required audits, regardless of the 5.3 Review control system
project phase in which they were conducted, follow-up docu- 5.3.1 Upgrades?
5.3.2 Modifications?
ment review is essential to confirm that all stated design and 6. Review comments to seal oil system component sizing study
manufacturing requirements are met. 6.1 List recommendations
In Figure 1.12.4, I have presented a typical design audit 6.1.1 Feasibility and reliability issues
meeting agenda to resolve a long term problem with a com- 7. Review final recommendations and feasibility
pressor seal oil system. Always remember to send agendas well 7.1 Assign tasks and schedules
in advance to allow the vendor sufficient time to prepare the 7.2 Create final timeline up to delivery of parts and installation
8. Conclusion
required material.
Fig 1.12.4 Design audit agenda

Best
Best
Best Practice 1.13Practice 1.13Practice 1.13
Timely vendor and EP&C document review. I have been involved in projects where the scheduled plant per-
Finalize document review times in the pre-feed phase of the project, sonnel document review response time has been very unrealistic. This
and ensure they are realistic, and will enable comments from plant site has caused important plant review comments to not be incorporated in
personnel to be incorporated. the machinery design, which has resulted in reliability issues in the field
Review all documents completely, and watch out for vendor and/or that delayed plant start-up and could have been avoided.
EP&C ‘cut and paste’ documents that are from other projects in error or
are generic in nature. Benchmarks
Follow up by reviewing the next issue of the document to ensure I have used the above approach in all critical equipment projects since
that your comments have been incorporated. 1975. This approach has resulted in safety and reliability ‘issue free’
projects, without significant cost adders or schedule delays.
Lessons Learned
Inefficient vendor and EP&C document reviews will cause
delivery delays and possible field start-up delays.

B.P. 1.13. Supporting Material
Assure that required review time frames are realistic and then
meet them!
Document review Thoroughly review all items
Question all required items and follow-up
It goes without saying that document review should definitely Be especially careful in the final phases of the project to ensure
that all required vendor changes have been made
be timely, within the project schedule, and accurate. However,
in addition there are other pertinent points, which are presented
in Figure 1.13.1. Fig 1.13.1 Effective document review considerations

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