Minor Scope Change to Work Performed by Subcontractor Leads to Discovery of Uncontrolled Hazardous Energy
1858 Views
Feedback
1 Comments

Favorite
Image for Minor Scope Change to Work Performed by Subcontractor Leads to Discovery of Uncontrolled Hazardous Energy

Type:  Lessons Learned

Publisher:  Pacific Northwest National Laboratory (Richland WA), Richland, WA (PNNL)

Published As:  Public

Date: 

Topics:  Electrical, Maintenance, Hazardous Energy Control

While troubleshooting the loss of power in cubicles at PNNL's new 3860 Building in March, electricians discovered an energized power distribution assembly (PDA) in recently installed cubicle partitions. The subcontractor tasked with this work scope, which was a change to the original scope, ran out of parts during the installation; there were not enough receptacles and cover plates available to shield the energized components. The subcontractor assumed it was acceptable to leave them uncovered and energized until additional parts were available.

Lessons Learned: Recognize that scope changes or additions, no matter how minor, may invite additional risk. Provide adequate oversight of work performed by subcontractors, who may not be knowledgeable on PNNL's requirements. Consult equipment manufacturer's instructions to assure hazards are recognized and controlled.

You must be logged in to open the attachment.

Download Article
Comments about this Article
You must be logged in to add or view comments.
Related Articles
Feedback Form
How did you apply this information?
You must be logged in to use this feature
Is this article applicable to your organization?