EMC CORPORATION – ARC FLASH STUDY

EMC requested we conduct an arc flash study at their plant. Our engineers came to site and conducted a full survey of the electrical infrastructure including MV/LV equipment, power transformers, backup generators, motors, cables and protection equipment.

INDUSTRY SUCCESS

Represents

33

of Irish economy

Over

250,000

employed in the sector

More than

80

of operations outside of Dublin

THE CHALLENGE

The EMC site is quite a large installation, with almost 300 boards to be assessed. A careful evaluation of current onsite documentation was required to ensure there were no gaps and the model could be built accurately. Much of the onsite protection equipment is old, requiring specialised power system modelling capabilities to create.

HOW WE HELPED

We took all the information gathered to calculate the arc flash values in Cal/cm2 for every point in the network according to IEEE1584. This helped inform the client of the high arc flash areas of the plant, and where extra precautions were required when carrying out live work. We then provided recommendations on how to mitigate against these high levels.

THE RESULT

Through the expertise derived from our years of experience, we were able to bring all onsite arc flash levels to below 8 Cals/cm2. We achieved this through protection coordination settings changes and the specification of certain hardware changes. The recommended mitigation was implemented and the results are a safer electrical installation for all affected onsite personnel.  We also recommended the wearing of non-intrusive arc flash PPE for electrical workers.

THE CLIENT

EMC is a data storage and information security company, headquartered in the US with 70,000 employees worldwide. Their cloud computing and analytics services are used by businesses in many markets. The Cork campus hosts EMC’s worldwide customer service centre, software development and global solutions centre.

"This is a good example of one of the many arc flash studies we carry out in a year. We also provide arc flashing training on site and training events open to specialists working in electrical engineering and maintenance throughout the year."

Alan O'KellyDirector

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