4. Procedure and Details of Upgrade
4-2
TI 33K01B10-50E
4.2 Details of Pre-assessment
A pre-assessment is required before upgrade.
Purpose of Pre-assessment
This pre-assessment is conducted to assure safety and reliability of existing I/O cards and SC
cards to be used in upgraded system. It includes assessment/observation of the following items,
reports of the results, and proposal of required remedy plans.
Flow of Work
Examine the history records concerned with the facility to be reused.
From the investigation results, propose the improvement and remedial treatments
necessary to maintain a long-term stable operation in the future.
However, if it is difficult to determine the appropriate improvement and remedial
treatments only from the investigation results of installation environment and facility
conditions, we propose further environment diagnosis and deterioration diagnosis.
Check and observe the facility condition items.
Measure the installation environment items using dedicated measuring instruments.
Examine history records
Investigate installation
environment
Observe facility conditions
Submit a report
Assess the results of
investigation and observation
Figure Flow of Work
History Check
• Checkifproblemsoccurduetoimproperinstallationenvironment.
• Checkwhentoreplaceparts.
• Checkifproblemsoccurduetodeterioration.
Installation Environment Check
Temperature, humidity, amount of dust in the air, and corrosive gas concentration (H2S, SO2, Cl2)
Mar. 27, 2015-00
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