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Time / Date: 5/31/2024 12:02:58
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JSP ID: 2637
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Scope of Work: Facility Electricians to rough in conduits and chases for Eaton Cell Watch Battery Monitoring System in B59 Eaton 9395 UPS System. Also install IBMU cabinet on wall and install TCU cans on top of UPS battery cabinets
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Work Order: WO350539
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Building: 59
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Person in Charge: Ernie Jew
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Lead / Supervisor: Grounds, Jeff
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Logged Email: jtgrounds@lbl.gov
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Division: Comp Sci
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QEW Level: QEW 2
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Modes of Work: Mode 0 - Electrically Safe Work Condition, Mode 1 - LOTO & Zero Voltage Verification, Mode 2 - Energized Diagnostics, Testing and Troubleshooting, Visual Inspection
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Second Person Requirement: Safety Watch
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Second Person Identified: Ernie Jew
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List Other Participants: Eaton
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Affected Persons Notified: Yes
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Switching: Hazardous Switching
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Panel / Equipment ID: UE599A
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System Information Review: Single Line Drawing, Arc Flash Labels
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Control of Hazardous Energy: Complex LOTO w/ RI
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Equipment Condition: Properly installed, Properly maintained, All doors and covers closed and fully latched, No signs of impending failure, Not energizing equipment for the first time, or after electrical repair
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Sequence of Job Steps
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List basic sequence of steps from start to finish.
Power Down B59 UPS System and LOTO (system will be in bypass) Disconnect battery strings in 6 battery cabinets to under 100VDC Install 600V sheeting over battery terminals to eliminate possible inadvertent contact Facility electricians to rough in conduits for Eaton Cell Watch system Remove 600V sheeting Reconnect battery strings Remove LOTO and power up UPS system |
Control of Work Area
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Minimum Approach Boundary: 96"
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Barricade Tape / Attendant: Warning - Orange
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Shock Risk Assessment
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System Voltage: 277/480 V ac
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Limited Approach Boundary: 42 inches
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Restricted Approach Boundary: 12 inches
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Will the hands enter the RAB: Yes
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Voltage Glove Class: 0
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Will any other part of the body enter the RAB: No
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Arc Flash Risk Assessment
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Incident Energy: 19 cal/cm2 cal/cm2
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Arc Flash Boundary: 96"
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Working Distance: 18 inches
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Arc Flash PPE Level: 3
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Incident Energy Reduction Measures: 0
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Capacitor Hazards
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Capacitor Bus Voltage:
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Capacitor total stored energy (joules):
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Discharge wait time (minutes):
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Emergency Response Plan
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Nearest Landline Location: Jeff Grounds Mech Level Trailer
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Emergency Number to Call: 6999
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Sufficient cell phone signal? Yes
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Clear exit path? Yes
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AED Location: Jeff Grounds Mech Level Trailer
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Fire Extinguisher Location: UPS Room at double door exit
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Contact release method available and tested: Rescue hook, Voltage gloves
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Environmental Conditions
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Does the environment present additional hazards that should be addressed?
None |
Error Precursors
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Task Demands: Critical steps or irreversible acts
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Work Environment:
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Individual Capabilities:
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Human Nature:
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Error Precursor Mitigations:
Follow MOP carefully and use two person verification of steps |
PPE Inspections
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Safety glasses (ANSI Z87),
Arc-rated clothing (flash suit, daily wear) including face shield, balaclava, hood., Hearing protection, Rubber insulating gloves and leather protectors, Non-melting footwear that fully covers the feet, Removal of conductive articles, Insulated tools, Multimeter and other electrical test instruments |
Notes / Other
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Perform Job Breifing
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PIC Conducts the Job Briefing. Cover all the contents of the Job Safety Plan.
A Job Briefing at a minimum must include:
Rev 2023.08.22.1 Form Content and Feedback Contact: Michael Rose -- mvr@lbl.gov |