WIT Press


Evaluation Of The Safety Integrity Level (SIL) Of An Emergency Shutdown System Using Rigorous Reliability Methodologies

Price

Free (open access)

Paper DOI

10.2495/RISK000151

Volume

45

Pages

7

Published

2000

Size

648 kb

Author(s)

R. Melo-Gonzalez; R. Estrada-Garcia; J. Martinez-Fernandez, J. Melendez-Hernandez

Abstract

The evaluation of the safety integrity level (SIL) of an Emergency Shutdown System for a typical process of gas-liquid separation of hydrocarbons under pressure was carried out. In order to achieve this it was appealed to the requirements indicated in the international standard ANSI/ ISA S84.01 (1996) and ISA drafts dTR 84.0.02 (1998) and IEC-61508 (1999). The undesirable events were identified applying the recommended practices of the API RP 14C. The probability of failure on demand (PFD) was determined using the fault three analysis, the failure rate data of components was obtained from the OREDA data base (16,17,18) and using a basis time of 8760 h the safety inte

Keywords