Time / Date: 3/29/2023 8:46:06
JSP ID: 811
Scope of Work: Perform chiller annual on 33u Aru 002
Work Order: 299232
Building:
Person in Charge: Justin Walker
Lead / Supervisor: Delgado, Alex
Logged Email: jwwalker@lbl.gov
Division: Facilities
QEW Level: QEW 2
Modes of Work: Mode 0 - Electrically Safe Work Condition, Mode 1 - LOTO & Zero Voltage Verification
Second Person Requirement: Standby Person
Second Person Identified: Justin solis
List Other Participants: Plumbers, riggers
Affected Persons Notified: Yes
Switching: Hazardous Switching
Panel / Equipment ID: 635A2A-3
System Information Review: Panel Schedules, Arc Flash Labels
Control of Hazardous Energy: Complex LOTO (requires LP, CLP, FLP)
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

Sequence of Job Steps

List basic sequence of steps from start to finish.

Go over job scope, gather materials, fill out and submit JSP, gather proper ppe, perform safety briefing, apply loto and verify zvv, loto condensor inlet and outlet valves. Perform maintenance , reassemble chiller, restore and check supply power. Check operations.

Control of Work Area

Minimum Approach Boundary: 42”
Barricade Tape / Attendant: Warning - Orange

Shock Risk Assessment

System Voltage: 277/480 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: 2.9 cal/cm2 cal/cm2
Arc Flash Boundary: 31”
Working Distance: 18 inches
Arc Flash PPE Level: 2
Incident Energy Reduction Measures: 0

Capacitor Hazards

Capacitor Bus Voltage: 480
Capacitor total stored energy (joules): 1600 joules
Discharge wait time (minutes): 20 min

Emergency Response Plan

Nearest Landline Location: 33 room 143A
Emergency Number to Call: 911
Sufficient cell phone signal? Yes
Clear exit path? Yes
AED Location: Have HVAC portable AED in possession
Fire Extinguisher Location: In mechanical room on jobsite
Contact release method available and tested: Upstream breaker or switch, Voltage gloves

Environmental Conditions

Does the environment present additional hazards that should be addressed?

Wet location, Noisy environment

Error Precursors

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

There are no current error precursors. All participants have done this work multiple times and are clear minded and comfortable with job scope.

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,
Insulated tools,
Multimeter and other electrical test instruments

Notes / Other

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