(151e) Securing the Control System against Improper Change after Alarm Rationalization
AIChE Spring Meeting and Global Congress on Process Safety
2008
2008 Spring Meeting & 4th Global Congress on Process Safety
The 20th Ethylene Producers’ Conference
Ethylene Plant Process Control -- Paper Session
Wednesday, April 9, 2008 - 10:20am to 10:45am
In the past, operators and engineering staff were accustomed to changing DCS alarm settings as they saw fit. Recently, an alarm rationalization project was executed to determine proper settings for every alarm. When these settings were implemented, the system was locked down to ensure that unauthorized changes were no longer possible. DCS lock-down created its own operational issues that had to be dealt with. This paper examines the method used for lock-down, the issues it created, and their solutions.
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2008 Spring Meeting & 4th Global Congress on Process Safety
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The 20th Ethylene Producers’ Conference only
| AIChE Pro Members | $100.00 |
| Fuels and Petrochemicals Division Members | Free |
| AIChE Graduate Student Members | Free |
| AIChE Undergraduate Student Members | Free |
| AIChE Explorer Members | $150.00 |
| Non-Members | $150.00 |