Industry
Applications Magazine, IEEE, Volume: 19 , Issue: 5, Digital Object Identifier:
10.1109/MIAS.2012.2215632, Publication Year: 2013 , Page(s): 29 - 38
Automatic
Decoupling System: Preventing the Uncontrolled Shutdown of a Petrochemical
Plant
Al-Mulla, A. ; Garg, K. ; Manson, S. ; El-Hamaky, A.
Abstract
Gulf
Petrochemical Industries Company (GPIC), located in Sitra, Kingdom of Bahrain,
operates a petrochemical complex consisting of a 1,200-t/d ammonia plant, a
1,200-t/d methanol plant, and a 1,700-t/d urea plant. Authors present a case
study of a dual-primary redundant automatic decoupling system (ADS) for a
critical petrochemical process.
GPIC selected a new dual-primary redundant ADS to island its system
from the external system disturbances. The operation of an as-built ADS was
validated against a real-time digital simulation system. Real-time system
modeling made it possible to validate the decoupling system operation for
various system disturbances and select the set points accordingly.
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