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Did You Really Test That Interlock?: The Importance of Early Identification of Defects
Sullivan, Paul B.
IEEE industry applications magazine, 2024-07, Vol.30 (4), p.69-74
New York: IEEE
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Título:
Did You Really Test That Interlock?: The Importance of Early Identification of Defects
Autor:
Sullivan, Paul B.
Assuntos:
Boilers
;
Chemical industry
;
Chemical products
;
Circuit breakers
;
Defect detection
;
Defects
;
Gas insulation
;
Low pressure
;
Manufacturing processes
;
Personnel
;
Substations
;
Switches
;
Switchgear
;
Testing
;
Troubleshooting
;
Wiring
É parte de:
IEEE industry applications magazine, 2024-07, Vol.30 (4), p.69-74
Descrição:
A chemical manufacturing facility installed a new substation to provide a second electrical source to 480-V equipment that was critical to site operations, such as steam boilers. The new substation used a 27-kV gas-insulated switchgear (GIS) to help reduce the size of the new substation. During checkout of the GIS, a SF 6 low-pressure switch circuit was found to not function properly. Both the low-pressure alarm and the circuit breaker trip due to low-low pressure did not work. Troubleshooting of the problem identified the control circuit wiring from the switchgear manufacturer was not correct, so the circuit could not operate properly. Field commissioning by the switchgear manufacturer did not identify the miswiring. This article discusses how this defect went unidentified and provides some suggested steps to help prevent this issue.
Editor:
New York: IEEE
Idioma:
Inglês
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