QEW 1 / 2 / 3 Job Safety Plan

General Information

Work Order

N\A

Building

88

Person in Charge

Brendan Ford

Lead / Supervisor

Other

Logged Email

bpford@lbl.gov

Division

Other

Work Planning

Modes of Work

☑ Mode 0 - Electrically Safe Work Condition
☑ Mode 1 - LOTO & Zero Voltage Verification

QEW Level

QEW 2

Second Person Requirement

Standby Person

Second Person Identified

Nathaniel Bohm

Other Participants

Scott Small, John Garcia, Sean Zhong, Nathaniel Bohm

Affected Persons Notified

Yes

System / Equipment

Switching

Hazardous Switching

Panel / Equipment ID

CB 15 in panel 80A4A6A

System Information Review

☑ Single Line Drawing
☑ Panel Schedules
☑ Arc Flash Labels

Control of Hazardous Energy

Simple LOTO

Equipment Condition

☑ Properly installed
☑ Properly maintained
☑ All doors and covers closed and fully latched
☑ Not energizing equipment for the first time
☑ or after electrical repair

Sequence of Job Steps

List basic sequence of steps from start to finish

1:Make sure Gyrotron owner/users is notified and shutdown Gyrotron. 2:Switch CB 15 in panel 80A4A6A, 480 VAC with Arc Flash Hazard of 5.30 cal. 3:Apply Loto lock and tag on CB 15 and verify absence of voltage on TB 2 inside rear north side of Gyrotron enclosure. 4:Cover High Voltage Power Supply output leads just below Magnet power Supply and small access hole just to the right with rubber insulating blankets for the duration of the work. 5:Remove all connections to the Magnet power Supply and remove from enclosure. 6:Repair/replace Magnet power Supply. Remove rubber insulating blankets and close enclosure. 7:Remove Loto locks and switch CB 15 on and return control to Gyrotron owner/users after functional tests are complete.

Control of Work Area

Minimum Approach Boundary

42"

Barricade Tape / Attendant

Caution - Yellow

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

5.3 cal/cm2

Arc Flash Boundary

41"

Working Distance

18 inches

Arc Flash PPE Level

2

Incident Energy Reduction Measures

0

Capacitor Hazards

Capacitor Bus Voltage

Capacitor Total Stored Energy (Joules)

Discharge Wait Time (Minutes)

Emergency Response Plan

Nearest Landline Location

Less then 15' away just east of panel.

Emergency Number to Call

911

Sufficient Cell Phone Signal

Yes

Clear Exit Path

No

AED Location

E.M. shop and also inside front main entrance of the building.

Fire Extinguisher Location

45' to the South East, on walkway above stairs.

Contact Release Method Available and Tested

Rescue hook, 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

Slow down and perform the work in a thoughtful manner.

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

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)
Emergency Response Plan