Matches in SemOpenAlex for { <https://semopenalex.org/work/W38067470> ?p ?o ?g. }
Showing items 1 to 77 of
77
with 100 items per page.
- W38067470 abstract "How does a mechanically driven chemical plant outperform its competitors? By running safely and reliably, that`s how. Today, when a critical pump fails, more often than not a standby pump is ready to be put into service. The process continues uninterrupted. Not so when an instrument fails. Instead, the process usually stops, product goes out-of-spec, customers wait for product, and engineers write investigation reports. This is especially true during startup and shutdown phases at chemical plants when incidents are most abnormally high. Safety systems have progressed significantly in reliability by advancing from a single programmable logic controller (PLC) concept to triplicated systems that can communicate digitally with a distributed control system (DCS) and be programmed with a high degree of reliability. Field devices have not kept pace. Critical instruments have basically been single-loop control or trip points. Emergency shutdown (ESD) functions have gained independence control or trip points. Emergency shutdown (ESD) functions have gained independence from control points, but, in so doing, have added components that may fail and falsely trip a unit off-line. We know that parts and devices fail. We know there are costs associated with frivolous trips due to such failures. Now we must recognize that themore » costs associated with frivolous trips (lost product and profit) could be significantly reduced or eliminated by upgrading systems to include redundant transmitters. Combining this redundancy with an appropriate voting scheme for generating trips will produce even higher probabilities of success and minimize costs even more. This article examines four ESD voting schemes: one of one, one of two, two of two, and two of three. One of three, one of four, and so forth will not be described because as the number of transmitters increases in a one-of-x scheme, the likelihood of a false trip goes to 100%.« less" @default.
- W38067470 created "2016-06-24" @default.
- W38067470 creator A5025189519 @default.
- W38067470 date "1997-06-01" @default.
- W38067470 modified "2023-09-26" @default.
- W38067470 title "Voting schemes offer greater reliability" @default.
- W38067470 hasPublicationYear "1997" @default.
- W38067470 type Work @default.
- W38067470 sameAs 38067470 @default.
- W38067470 citedByCount "0" @default.
- W38067470 crossrefType "journal-article" @default.
- W38067470 hasAuthorship W38067470A5025189519 @default.
- W38067470 hasConcept C111919701 @default.
- W38067470 hasConcept C116915560 @default.
- W38067470 hasConcept C121332964 @default.
- W38067470 hasConcept C127413603 @default.
- W38067470 hasConcept C157085824 @default.
- W38067470 hasConcept C163258240 @default.
- W38067470 hasConcept C17744445 @default.
- W38067470 hasConcept C199539241 @default.
- W38067470 hasConcept C200601418 @default.
- W38067470 hasConcept C22212356 @default.
- W38067470 hasConcept C2780263472 @default.
- W38067470 hasConcept C38652104 @default.
- W38067470 hasConcept C41008148 @default.
- W38067470 hasConcept C43214815 @default.
- W38067470 hasConcept C520049643 @default.
- W38067470 hasConcept C62520636 @default.
- W38067470 hasConcept C94625758 @default.
- W38067470 hasConcept C98045186 @default.
- W38067470 hasConceptScore W38067470C111919701 @default.
- W38067470 hasConceptScore W38067470C116915560 @default.
- W38067470 hasConceptScore W38067470C121332964 @default.
- W38067470 hasConceptScore W38067470C127413603 @default.
- W38067470 hasConceptScore W38067470C157085824 @default.
- W38067470 hasConceptScore W38067470C163258240 @default.
- W38067470 hasConceptScore W38067470C17744445 @default.
- W38067470 hasConceptScore W38067470C199539241 @default.
- W38067470 hasConceptScore W38067470C200601418 @default.
- W38067470 hasConceptScore W38067470C22212356 @default.
- W38067470 hasConceptScore W38067470C2780263472 @default.
- W38067470 hasConceptScore W38067470C38652104 @default.
- W38067470 hasConceptScore W38067470C41008148 @default.
- W38067470 hasConceptScore W38067470C43214815 @default.
- W38067470 hasConceptScore W38067470C520049643 @default.
- W38067470 hasConceptScore W38067470C62520636 @default.
- W38067470 hasConceptScore W38067470C94625758 @default.
- W38067470 hasConceptScore W38067470C98045186 @default.
- W38067470 hasIssue "6" @default.
- W38067470 hasLocation W380674701 @default.
- W38067470 hasOpenAccess W38067470 @default.
- W38067470 hasPrimaryLocation W380674701 @default.
- W38067470 hasRelatedWork W120500866 @default.
- W38067470 hasRelatedWork W129814695 @default.
- W38067470 hasRelatedWork W1574387770 @default.
- W38067470 hasRelatedWork W1925248541 @default.
- W38067470 hasRelatedWork W1975899876 @default.
- W38067470 hasRelatedWork W2047746040 @default.
- W38067470 hasRelatedWork W2051422198 @default.
- W38067470 hasRelatedWork W2066128363 @default.
- W38067470 hasRelatedWork W2077307496 @default.
- W38067470 hasRelatedWork W2089584387 @default.
- W38067470 hasRelatedWork W2103256391 @default.
- W38067470 hasRelatedWork W2133910219 @default.
- W38067470 hasRelatedWork W2134616544 @default.
- W38067470 hasRelatedWork W2345441610 @default.
- W38067470 hasRelatedWork W2524343711 @default.
- W38067470 hasRelatedWork W2579709112 @default.
- W38067470 hasRelatedWork W2584552615 @default.
- W38067470 hasRelatedWork W62762461 @default.
- W38067470 hasRelatedWork W1964142115 @default.
- W38067470 hasRelatedWork W2113569361 @default.
- W38067470 hasVolume "44" @default.
- W38067470 isParatext "false" @default.
- W38067470 isRetracted "false" @default.
- W38067470 magId "38067470" @default.
- W38067470 workType "article" @default.