U-Emerson wethule izinhlangano zokuqala zamavalvu ezihlangabezana nezidingo zenqubo yokuklama ye-Safety Integrity Level (SIL) 3 ngokwezinga le-IEC 61508 le-International Electrotechnical Commission.
Ukuhlukaniswa KwedijithaliIzixazululo zesici sokugcina zihlangabezana nezidingo zamakhasimende zama-valve okuvala kuzinhlelo zokusebenza zesistimu yokuphepha ebaluleke kakhulu (i-SIS).
Ngaphandle kwalesi sixazululo, abasebenzisi kumele bacacise zonke izingxenye zevalvu ngayinye, bathenge ngayinye, bese beyihlanganisa ibe yinto yonke esebenzayo. Ngisho noma lezi zinyathelo zenziwe kahle, lolu hlobo lokuhlanganiswa ngokwezifiso ngeke lunikeze zonke izinzuzo zokuhlanganiswa kweDigital Isolation.
Ukwakha i-valve yokuvala ukuphepha kuwumsebenzi oyinkimbinkimbi. Izimo zenqubo evamile nezingahambi kahle kumele zihlolwe ngokucophelela futhi ziqondwe lapho kukhethwa izingxenye ze-valve kanye ne-actuator. Ngaphezu kwalokho, inhlanganisela efanele yama-solenoid, ama-bracket, ama-coupling kanye nezinye izinto ezibalulekile kumele zichazwe futhi zifaniswe ngokucophelela ne-valve ekhethiwe. Ingxenye ngayinye yalezi kumele isebenze yodwa futhi ivumelane ukuze isebenze.
U-Emerson ubhekana nalezi zinkinga kanye nezinye ngokuhlinzeka nge-Digital Isolation shutdown valve assembly ethuthukisiwe, eyenzelwe inqubo ngayinye ethile. Izingxenye ezahlukahlukene zikhethwe ngokukhethekile ukuze kuhlangatshezwane nezidingo zesicelo. I-assembly yonke ithengiswa njengeyunithi ehlolwe ngokugcwele futhi eqinisekisiwe, enenombolo eyodwa yochungechunge kanye nemibhalo ehambisanayo echaza imininingwane yazo zonke izingxenye ze-assembly.
Ngenxa yokuthi i-assembly yakhiwe njengesixazululo esiphelele ezindaweni zase-Emerson, inezinga elithuthukisiwe kakhulu lokuhluleka kokufakwa kwe-PFD. Kwezinye izimo, izinga lokuhluleka kwe-assembly lizoba ngaphansi kuka-50% kunenhlanganisela yezingxenye ezifanayo ze-valve ezithengwe ngazinye futhi zahlanganiswa ngumsebenzisi wokugcina.
Isikhathi sokuthunyelwe: Novemba-20-2021
