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Time / Date: 2/25/2025 10:08:08
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JSP ID: 3431
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Scope of Work: Installing float sensors at Cooling Towers
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Work Order: NA
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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: ejew@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 1 - LOTO & Zero Voltage Verification, Mode 2 - Energized Diagnostics, Testing and Troubleshooting, Visual Inspection
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Second Person Requirement: Standby Person
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Second Person Identified: Eric Lucas
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List Other Participants: HVAC Controls electricians
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Affected Persons Notified: Yes
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Switching: Non-Hazardous Switching
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Panel / Equipment ID: B59 Cooling Towers 1-7
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System Information Review: Panel Schedules
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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.
Notify the Control Room Turn off Cooling Tower at BMS Switch off Cooling Tower VFD Hang Group LOTO lock and tag at VFD Challenge LOTO by trying to restart Cooling Tower Hand Group LOTO lock and tag at Fan Shaft lock out device Challenge LOTO by trying to spin fan by hand Place both keys in LOTO lock box Hang RI lock and tag on lock box Give LOTO briefing to HVAC Controls electricians Have HVAC Controls electricians hang LOTO lock and tag Allow HVAC Controls to begin installing float sensors in Cooling Towers When work is complete, notify the Control Room Release Group LOTO Switch Cooling Tower VFD on Turn on Cooling Tower at BMS Work is complete |
Control of Work Area
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Minimum Approach Boundary: 42"
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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: No
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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: 1.01 cal/cm2
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Arc Flash Boundary: 16"
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Working Distance: No Arc Flash Hazard Present
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Arc Flash PPE Level: 1
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Incident Energy Reduction Measures: 0
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Capacitor Hazards
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Capacitor Bus Voltage: NA
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Capacitor total stored energy (joules): NA
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Discharge wait time (minutes): NA
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Emergency Response Plan
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Nearest Landline Location: Mechanical Level office container
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Emergency Number to Call: 911
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Sufficient cell phone signal? Yes
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Clear exit path? Yes
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AED Location: Mechanical Level office container
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Fire Extinguisher Location: South Mechanical Level door
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Contact release method available and tested: Upstream breaker or switch, Rescue hook
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Environmental Conditions
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Does the environment present additional hazards that should be addressed?
Lookalike equipment |
Error Precursors
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Task Demands:
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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:
Look alike equipment...verify switching with crew before switching power at VFDs |
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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NA
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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 |