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The Water Cooler
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Now I remember why I became an electrician
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<blockquote data-quote="dennishoddy" data-source="post: 4019001" data-attributes="member: 5412"><p>The actuators are electrically charged by the control system at the plant I worked at with big springs to keep them in place using an interlock. </p><p>When testing before the end of an overhaul, us control guys were only interested if the trips and interlocks worked in case of a fault. The trip would be set and held in the ready position with a piece of baling wire using a half wrap. A jumper wire was installed to fool the control system that the breaker was normal and in operation. </p><p>The control room operators would manually trip the system causing the wire to unspool and result in the slam as the actuators opening the breaker. Loud enough to require hearing protection. </p><p>When the CR operators saw the “trip” that was one more test of the checks that were completed before putting the unit back online. </p><p>The actual links were removed from the breakers. After control testing, the electricians in arc suits did their thing to install and megger the links before operations could put the unit back online. </p><p>Trips and interlocks testing would take almost a week of 12-15 hour days for the controls guys to complete before the unit could come back online after a 6-8 week overhaul.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 4019001, member: 5412"] The actuators are electrically charged by the control system at the plant I worked at with big springs to keep them in place using an interlock. When testing before the end of an overhaul, us control guys were only interested if the trips and interlocks worked in case of a fault. The trip would be set and held in the ready position with a piece of baling wire using a half wrap. A jumper wire was installed to fool the control system that the breaker was normal and in operation. The control room operators would manually trip the system causing the wire to unspool and result in the slam as the actuators opening the breaker. Loud enough to require hearing protection. When the CR operators saw the “trip” that was one more test of the checks that were completed before putting the unit back online. The actual links were removed from the breakers. After control testing, the electricians in arc suits did their thing to install and megger the links before operations could put the unit back online. Trips and interlocks testing would take almost a week of 12-15 hour days for the controls guys to complete before the unit could come back online after a 6-8 week overhaul. [/QUOTE]
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Now I remember why I became an electrician
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