QEW 1 / 2 / 3 Job Safety Plan

Time / Date: 10/3/2024 11:05:52

JSP ID: 2987

Scope of Work: To remove 12kV DC high voltage input to the Cyclotron RF system.

Work Order: N/A

Building: 88

Person in Charge: Brendan Ford

Lead / Supervisor: Other

Logged Email: bpford@lbl.gov

Division: Other

QEW Level: QEW 1

Modes of Work: Mode 0 - Electrically Safe Work Condition, Mode 1 - LOTO & Zero Voltage Verification

Second Person Requirement: Not Required

Second Person Identified: N/A

List Other Participants: N/A

Affected Persons Notified: Yes

Switching: Non-Hazardous Switching

Panel / Equipment ID: GE21

System Information Review: Single Line Drawing, 12kV HVDC Isolation Equipment Specific LOTO R5D-1

Control of Hazardous Energy: Simple LOTO

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.

1.1 Review this procedure. 1.2 Perform briefing to all LOTO Affected Persons. 1.3 Notify Operator-In-Charge (OIC) of intent to apply 12kV HVDC Isolation LOTO. 2. Equipment Shutdown: 2.1 Verify voltage is present on the Modulator input voltage meter (F328). 2.2 Have the control room operator perform a normal shutdown of the 12kV AC Breaker (A2318). 2.3 Verify the corresponding power-on lights have gone to the off state (A2318). 2.4 Verify the Modulator input voltage meter has gone to zero (F328). 2.5 Remove Admin lock and open GE50 cabinet west door (PAD). 2.6 Open Ross relay coil power circuit breaker GE50-CB1 (120VAC). 2.7 Close GE50 cabinet west door, replace Admin lock. 2.8 Verify GE21 Ross relay contact is in the OFF position (GE21 south window). GE21-HV Switch: Switch to OFF position, apply LOTO device, place LOTO Key#1 into Group LOTO Box. Visually verify 2 Modulator grounding relays (north wall) are in the down (grounded) position.

Minimum Approach Boundary: N/A

Barricade Tape / Attendant:

System Voltage: No Shock Hazard Present

Limited Approach Boundary: None

Restricted Approach Boundary: None

Will the hands enter the RAB: No

Voltage Glove Class: Not Required

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

Incident Energy: N/A 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: Not Required

Capacitor Bus Voltage: N/A

Capacitor total stored energy (joules): N/A

Discharge wait time (minutes): N/A

Does the environment present additional hazards that should be addressed?

If at night, will need a flashlight. If raining, can walking surface can be slippery.

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,

Requirements: One worker trained in non-QEW switching (EHS0536), LBNL LOTO (EHS0370/EHS0373), 88” LOTO (88-OPS-PRO-17) 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