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Old 05-03-2018, 11:09 AM   #1
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Default life cycle assessment of a substation

Good day everyone, my fellow esteemed electrical engineers. Please, whats the proper or ideal way of carrying our a life cycle assessment on a substation. Thanks
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Old 05-03-2018, 11:26 AM   #2
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This one might need a new life.
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Old 05-03-2018, 12:00 PM   #3
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wow, it really needs a new life. This may be as a result of poor energy audit and life cycle management. That is why I need to get the life cycle assessment of a substation. Yesterday, I witness a similar incident in Lagos, Nigerai
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Old 05-03-2018, 12:17 PM   #4
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Originally Posted by ganiyudan View Post
Good day everyone, my fellow esteemed electrical engineers. Please, whats the proper or ideal way of carrying our a life cycle assessment on a substation. Thanks


Modern approach is either a Time based or condition based approach. Time based means certain components have an expected life. So gather the ages and see how old it is. Replace as needed. Technological obsolescence also applies here which means if you can’t get parts or support because it’s not made or supported, replace. There are degrees of this. For instance Westinghouse has been technically out of business for about 20 years but there is such a huge stockpile of DHP breakers and CBS even sells a direct retrofill replacement (remove old puffer style air breaker, slide in new magnetic vacuum breaker) that the life question can get complicated.

The condition based approach is you PM the equipment (perform condition assessments) and repair/replace as needed. This approach usually ends up being lower cost and easier to sell to management. The condition based approach basically assumes equipment lasts “forever” until it fails. As most electrical equipment is not subject to wear, it tends to have mostly random or environmentally induced failures so this tends to be the primary approach,

Combinations of both are what usually works best.

Your question would be better answered on Engineers Edge, the Arc Flash Forum, or something similar. This board is more for the technical crowd that actually does the assessments.


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Old 05-03-2018, 12:39 PM   #5
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Modern approach is either a Time based or condition based approach. Time based means certain components have an expected life. So gather the ages and see how old it is. Replace as needed. Technological obsolescence also applies here which means if you can’t get parts or support because it’s not made or supported, replace. There are degrees of this. For instance Westinghouse has been technically out of business for about 20 years but there is such a huge stockpile of DHP breakers and CBS even sells a direct retrofill replacement (remove old puffer style air breaker, slide in new magnetic vacuum breaker) that the life question can get complicated.

The condition based approach is you PM the equipment (perform condition assessments) and repair/replace as needed. This approach usually ends up being lower cost and easier to sell to management. The condition based approach basically assumes equipment lasts “forever” until it fails. As most electrical equipment is not subject to wear, it tends to have mostly random or environmentally induced failures so this tends to be the primary approach,

Combinations of both are what usually works best.

Your question would be better answered on Engineers Edge, the Arc Flash Forum, or something similar. This board is more for the technical crowd that actually does the assessments.


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