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Title: Causes And Cures Of Regulator Instability
Author: William H. Earney
Source: 1986 International School of Hydrocarbon Measurement
Year Published: 1986
Abstract: This paper w i l l address the gas p r e s s u re reducing r e g u l a t o r i n s t a l l a t i o n and the Issue of e r r a t i c c o n t r o l ou the downstream p r e s s u r e, A gas p r e s s u r e reducing r e g u l a t o r s job is to manipulate flow in order to c o n t r o l p r e s s u r e. When the downstream p r e s s u r e is not p r o p e r ly c o n t r o l l e d the term u n s t a b l e c o n t r o l Is a p p l i e d . Figure I is a l i s t of other terms used for v a r i o u s forms of downstream p r e s s u re i n s t a b i l i t y . This paper w i l l not address the mathematical methods of d e s c r i b i n g the automatic c o n t r o l system of the p r e s s u re reducing s t a t i o n , but w i l l deal with more of the components and t h e i r a f f e c t on the system s t a b i l i t y .

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