QEW 1 / 2 / 3 Job Safety Plan

Time / Date: 10/3/2024 12:50:41

JSP ID: 2989

Scope of Work: To produce an electrically safe condition to perform electrical maintenance on the Final Power Amplifier.

Work Order: N/A

Building: 88

Person in Charge: Brendan Ford

Lead / Supervisor: Other

Logged Email: bpford@lbl.gov

Division: Other

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:

List Other Participants:

Affected Persons Notified: Yes

Switching: Hazardous Switching

Panel / Equipment ID: DE165

System Information Review: Single Line Drawing, Final Power Amplifier Equipment Specific LOTO R5G-1

Control of Hazardous Energy: Complex LOTO w/ RI

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

List basic sequence of steps from start to finish.

- Perform briefing to all LOTO Affected Persons. -Notify Operator-In-Charge (OIC) of intent to apply FPA LOTO. -Equipment Shutdown: -Have the control room operator perform a normal shutdown of the FPA, wait 20 minutes for capacitor discharge time before proceeding. -Turn off 24V DC power at A3036-P[2]-9. -12kV DC. Cyclotron HV DC. Control With: 12KVDC (R5D-1) or 12KVAC (R5D-2) LOTO. -480V AC. FPA Filament Power. FPA PG1 Plug. Control With: 80A3A6A-CB4 -3kV DC, 1.5A. Screen Grid Bias HVPS. Turn On Test. Control With: A1019 Power Plug -2.4kW RF .01-225 MHz FPA Driver Amplifiers. Turn On Test. Control With: 240V Input Plug to A1000/A1200 Amplifier Remove plug. -3.5 600V DC, 1.A. Grid Bias HVPS. Control With: A3120-CB3 (240V, 15A, 9.25 cal/cm2) -3.6 409J at 15.6V (6x 0.56mF) FPA Filament Rectifier Cap. Bank. Control With: Engineered Control - wait 20 minutes before opening FPA Cabinet (time to less than 10 joules) -Turn off and blow down water lines, as needed. Anode (Main manifold in Pit.) Anode Ring (Main manifold in Pit.) -Attempt to turn-on the FPA.

Minimum Approach Boundary: 60"

Barricade Tape / Attendant: Notice - Blue

System Voltage: 25kV DC, 600V DC, 480V AC, 3kV DC, 3-30 MHz 1kW RF, 409J, 15.6V DC Capacitors.

Limited Approach Boundary: 60 inches

Restricted Approach Boundary: 17 inches

Will the hands enter the RAB: Yes

Voltage Glove Class: 0

Will any other part of the body enter the RAB: No

Incident Energy: 2.18 Cal/Cm cal/cm2

Arc Flash Boundary: N/A

Working Distance: No Arc Flash Hazard Present

Arc Flash PPE Level: Minimum PPE for Electrical Work

Incident Energy Reduction Measures: 0

Capacitor Bus Voltage: 15.6V DC

Capacitor total stored energy (joules): 409 joules

Discharge wait time (minutes): 20 minutes

Does the environment present additional hazards that should be addressed?

Insufficient lighting

Task Demands:

Work Environment:

Individual Capabilities:

Human Nature:

Error Precursor Mitigations:

N/A

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,
Inspect rescue hook for damage and test date.

Requirements: One qualified electrical worker (QEW2) trained for testing and switching, trained in capacitor safety, trained in LBNL LOTO, trained in 88” specific LOTO (88-OPS-PRO-017) and authorized.

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

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