Scope of Work:Disconnect wiring between heater ring and Heater control boxes. Unmount boxes and return them to LBL
General Information
Work Order
None
Building
Pt Reyes Field Site
Person in Charge
Todd Wood
Lead / Supervisor
Other
Logged Email
TJWood@lbl.gov
Division
Other
Work Planning
Modes of Work
☑ Mode 0 - Electrically Safe Work Condition ☑ Mode 1 - LOTO & Zero Voltage Verification
QEW Level
QEW 1
Second Person Requirement
Not Required
Second Person Identified
Other Participants
Affected Persons Notified
Yes
System / Equipment
Switching
No Switching Required
Panel / Equipment ID
PP1-8
System Information Review
☑
Control of Hazardous Energy
Cord & Plug LOTO
Equipment Condition
☑
Sequence of Job Steps
List basic sequence of steps from start to finish
1. Establish Loto - Unplug 240 VAC plug, place a cord cap lock and tag.
2. Open enclosure - preform ZVV
3. ensure all breakers in the panel are OFF
4. disconnect phases and ground for the 2 heater circuits.
5. disconnect the low voltage signals from the datalogger
6. apply tape to protect all exposed wire ends
7. remove enclosures from the plywood backpanel
Control of Work Area
Minimum Approach Boundary
42
Barricade Tape / Attendant
Shock Risk Assessment
System Voltage
120/240 V ac
Limited Approach Boundary
42 inches
Restricted Approach Boundary
12 inches
Will the hands enter the RAB
Yes
Voltage Glove Class
0
Will any other part of the body enter the RAB
No
Arc Flash Risk Assessment
Incident Energy
NA cal/cm2
Arc Flash Boundary
NA
Working Distance
No Arc Flash Hazard Present
Arc Flash PPE Level
Minimum PPE for Electrical Work
Incident Energy Reduction Measures
0
Capacitor Hazards
Capacitor Bus Voltage
NA
Capacitor Total Stored Energy (Joules)
NA
Discharge Wait Time (Minutes)
NA
Emergency Response Plan
Nearest Landline Location
Pt Reyes House
Emergency Number to Call
911
Sufficient Cell Phone Signal
Yes
Clear Exit Path
Yes
AED Location
Fire Extinguisher Location
Barn
Contact Release Method Available and Tested
Upstream breaker or switch
Environmental Conditions
Does the environment present additional hazards that should be addressed?
Wet location, Lookalike equipment
Error Precursors
Task Demands
Work Environment
Individual Capabilities
Human Nature
Error Precursor Mitigations
Consult task list, verbalize steps
PPE Inspections
☑ Safety glasses (ANSI Z87) ☑ 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
Perform Job Briefing
PIC Conducts the Job Briefing. Cover all the contents of the Job Safety Plan.
A Job Briefing at a minimum must include:
Detailed Scope of Work
Shock and arc flash hazards for each task
Controls to mitigate the hazards (procedures, precautions, energy source controls, PPE requirements)
Work area controls (barricades, signs, attendants)
