Time / Date: 6/30/2025 8:00:15
JSP ID: 3886
Scope of Work: Troubleshoot why Gp 004 breaker has tripped twice.
Work Order:
Building: #02
Person in Charge: Jeff Hendrix
Lead / Supervisor: Hendrick, Jeffery
Logged Email: AJTurner2@lbl.gov
Division: Facilities
QEW Level: QEW 2
Modes of Work: Mode 0 - Electrically Safe Work Condition
Second Person Requirement: Standby Person
Second Person Identified: Joe colmenares
List Other Participants: None
Affected Persons Notified: Yes
Switching: Non-Hazardous Switching
Panel / Equipment ID: 238A9A1A-20,22,24
System Information Review: Single Line Drawing, Panel Schedules, Arc Flash Labels
Control of Hazardous Energy: Simple LOTO
Equipment Condition: All doors and covers closed and fully latched, No signs of impending failure, Not energizing equipment for the first time, or after electrical repair

Sequence of Job Steps

List basic sequence of steps from start to finish.

Lock out tag out the circuit then ZVV the circuit after we ZVV then check and tighten connections.Megger the circuit then check for phase imbalance.

Control of Work Area

Minimum Approach Boundary: 18
Barricade Tape / Attendant: Attendant

Shock Risk Assessment

System Voltage: 277/480 V ac
Limited Approach Boundary: 42 inches
Restricted Approach Boundary: 3 feet, 6 inches
Will the hands enter the RAB: No
Voltage Glove Class: 0
Will any other part of the body enter the RAB: No

Arc Flash Risk Assessment

Incident Energy: 0.35 cal/cm2
Arc Flash Boundary: Nine inches
Working Distance: 18 inches
Arc Flash PPE Level: 2
Incident Energy Reduction Measures: 0

Capacitor Hazards

Capacitor Bus Voltage: None
Capacitor total stored energy (joules): 0
Discharge wait time (minutes): 0

Emergency Response Plan

Nearest Landline Location: Cell phone
Emergency Number to Call: 911
Sufficient cell phone signal? Yes
Clear exit path? Yes
AED Location: On location
Fire Extinguisher Location: Building 2
Contact release method available and tested: Voltage gloves

Environmental Conditions

Does the environment present additional hazards that should be addressed?

None

Error Precursors

Task Demands:
Work Environment:
Individual Capabilities:
Human Nature:
Error Precursor Mitigations:

None

PPE Inspections

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,
Multimeter and other electrical test instruments

Notes / Other

None

Perform Job Breifing

PIC Conducts the Job Briefing. Cover all the contents of the Job Safety Plan.

A Job Briefing at a minimum must include:
  1. Detailed Scope of Work
  2. Shock and arc flash hazards for each task
  3. Controls to mitigate the hazards (procedures, precautions, energy source controls, PPE requirements)
  4. Work area controls (barricades, signs, attendants)
  5. Emergency Response Plan

Rev 2023.08.22.1
Form Content and Feedback Contact: Michael Rose -- mvr@lbl.gov