pub-3000 chapter 8 “electrical safety†overview of revisions
TRANSCRIPT
Pub-3000 Chapter 8“Electrical Safety”
Overview of Revisions
Tom CaronnaLBNL Electrical Safety Engineer
510/486-4314
What’s Revised/Reformatted:
• Document is easier to understand and implement• Uses graphs and flow charts in addition to informational tables
(section 8.7)• Includes separate criteria for distribution power, high voltage stored
energy systems, and batteries (section 8.7)• Uses separate hazard control tables for R&D and premises wiring
(section 8.7)• Hazard control requirements are clearly outlined (section 8.7)• Supportive information is now in appendices• Criteria for becoming an electrically Qualified Person is defined,
including background training profiles (section 8.8)• Links to other information are provided• Defines permit processes and allows for standing procedures for
repetitive processes of diagnostics and testing. (section 8.7)o Replaces the need for Appendix A1 permits in most applicationso Must have line management approval
• Electrical technical terms are identified (lower case capital font) and are defined in definitions section of chapter (appendix D)
10,000
.1
.01
.001
1,000
100
10
1
1 10 100 1,000 10,000 100,000
Class 2B
Voltage
70E Cat 0
1000W
<10KJ
Class3B
70E Cat 1
25kA Class4B
70E Cat 2, 3, 4
2 Person Rule
>10KJ
<10K J
Safety Watch Required
Safety Watch Required
250V
250V
NFPA 70E Qualified
NFPA 70E Qualified
NFPA 70E QualifiedEngineering Assistance
Required
Class 3B
125,000 W
500 Amps
70E Cat 2
R&D EQUIPMENT/STORED ENERGYM
axim
um A
vaila
ble
Cur
rent
1000W
50V
<10J
5mA
Class1B
<1000J
20KV
EH&S 0260
10,000
.1
.01
.001
1,000
100
10
1
100,000
1 50
Class2A
Class1A
50V
VoltageVAC
1000W
Class3A
Class4A
2 Person Rule Safety Watch Required
250 600
10kA
EHS0260required
NFPA 70EQualified
NFPA 70EQualified NFPA 70E
Qualified
AV
AIL
AB
LE F
AU
LT C
UR
RE
NT
Facilities Energized Hazard Classes
Battery Hazard Control Requirements
Safety glassesand protective clothing
as required
10,000
1,000
100
10
1
1 50
Battery voltage
Qualified electrical workers onlyunless current restricted to less than 5mA
Two person rule requiredSafety glasses and protective clothing
as required
No special qualifications neccesary
Qualified electrical workers onlySafety watch required
Safety glasses and protective clothing as required
No Qualifications necessary whencurrent limited below 5mA
Wat
t-ho
urs
Alk D Cell
Alk AA
Alk AAA
Alk 9V
Alk Lantern 6V
Alk C Cell
Typical 12V Power Tool Battery
12V Passenger CarBattery Range
Hazard Class Qualification Requirements Authorization Requirements Hazard Control Requirements
Energized Electrical Work Documentation
R&D Class 1BEHS 260 Basic Electric Hazard
Awareness.
Trained and knowledgeable about the equipment and site.
Familiar with safe work practices, PPE, tools and test equipment.
Approval by Supervisor
De-energized
A qualified person may work alone.
NoneDiagnostic & Test
EnergizedManipulative
• If exposed voltages are less than 50V differential, or to ground, a qualified person can work alone with implied approval and general supervision.
R&D Class 2B
EHS 256 Lockout/Tagout
EHS 249 Electrical Safety for Electronic Technicians.
EHS 116 & EHS 123 First Aid & CPR.
EHS 267 NFPA 70E.
Trained and knowledgeable about the equipment and site.
Authorization by Supervisor.
Authorization by Division Management.
De-energized • A qualified person may work alone. • None
EnergizedDiagnostic & Test
The two-person rule is mandatory
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E.
Access restricted by barricades per NFPA 70E
Appendix C: Job Planning Checklist
Appendix A1: Energized D&T Job Briefing Form
EnergizedManipulative
A Safety Watch is required.
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E.
Access restricted by barricades per NFPA 70E
Appendix C: Job Planning Checklist
Appendix B: Energized Manipulative Electrical Work Permit
R&D Class 3B & 4B
Authorization by Supervisor.
Authorization by Division Management.
De-energized • A qualified person may work alone. • None
EnergizedDiagnostic & Test
A Safety Watch is required.
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E .
Access restricted by barricades per NFPA 70E
Appendix C: Job Planning Checklist
Appendix A1: Energized D&T Job Briefing Form
EnergizedManipulative Appendix C: Job Planning
Checklist
Appendix B: Energized Manipulative Electrical Work Permit
R&D Energized Electrical Work Requirements
Hazard Class Qualification Requirements Authorization Requirements Hazard Control Requirements
Energized Electrical Work Documentation
Facilities Class 1A EHS 260 Basic Electric Hazard Awareness.
Trained and knowledgeable about the equipment and site.
Familiar with safe work practices, PPE, tools and test equipment.
Approval by Supervisor
De-energized
A qualified person may work alone.
NoneDiagnostic & Test
Manipulative
• A qualified person may work alone.
Facilities Class 2A
EHS 256 Lockout/Tagout.
EHS 250 Electrical Safety for Electricians.
EHS 116 & EHS 123 First Aid & CPR.
EHS 267 NFPA 70E.
Trained and knowledgeable about the equipment and site.
Authorization by Supervisor.
Authorization by Division Management.
De-energized • A qualified person may work alone. • None
Diagnostic & Test
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E .
Access restricted by barricades per NFPA 70E.
Appendix C: Job Planning Checklist
Appendix A1: Energized D&T Job Briefing Form
ManipulativeA Safety Watch is required.
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E .
Access restricted by barricades per NFPA 70E
Appendix C: Job Planning Checklist
Appendix B: Energized Manipulative Electrical Work Permit
Facilities Class 3AAuthorization by
supervisor.
Authorization by Division Management.
De-energized • A qualified person may work alone. • None
Diagnostic & Test
The two-person rule is mandatory.
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E .
Access restricted by barricades per NFPA 70E
Appendix C: Job Planning Checklist
Appendix A1: Energized D&T Job Briefing Form
ManipulativeA Safety Watch is required.
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E .
Access restricted by barricades per NFPA 70E
Appendix C: Job Planning Checklist
Appendix B: Energized Manipulative Electrical Work Permit
Facilities Energized Electrical Work Requirements
Facilities Energized Electrical Work Requirements (Con’t)
Facilities Class 4A
EHS 256 Lockout/Tagout.
EHS 250 Electrical Safety for Electricians.
EHS 116 & EHS 123 First Aid & CPR.
EHS 267 NFPA 70E.
FAC 030 High Voltage Safety Training.
Trained and knowledgeable about the equipment and site.
Authorization by Supervisor.
Authorization by Division Management.
De-energized • A qualified person may work alone. • None
Diagnostic & Test
A Safety Watch is required.
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E .
Access restricted by barricades per NFPA 70E
Appendix C: Job Planning Checklist
Appendix A1: Energized D&T Job Briefing Form
Manipulative
A Safety Watch is required.
LBNL personnel must not work on Class 4A equipment in Mode 3, except for certain testing procedures performed under a Facilities Department Switching Tag.
Insulated gloves, insulated tools and other personal protective equipment (PPE) per NFPA 70E .
Only commercial power utility personnel or their subcontractors will work on energized Class 4 equipment, and they will follow their own procedures.
Access restricted by barricades per NFPA 70E
Facilities Department Switching Tag.
Only commercial power utility personnel or their subcontractors will work on energized Class 4 equipment, and they will follow their own procedures.
Appendix C: Job Planning Checklist
Appendix B: Energized Manipulative Electrical Work Permit
START
Is Equipmentoperating at :
1.Greater than Hazard Class 1A, or
2.Greater than Hazard Class 1BExamples:§ >50V and >5mA§ <50V but >1000W
Are persons performing the task Qualified & Authorized•EHS 260•Specific equip. knowledge•Familiar with PPE & tools
STOPTraining & Supervisor approval is required before performing energized work.
Contact any ESCmember for help
Perform energized electrical task
N
Will equipment be placed into an electrically safe work condition (verified de-energized & LOTO) before working on or near energized parts
N
Y
N
Can you justifyworking on energized components:§ Introduces increased hazards, or§ Infeasible due to equip. design or operational limitations
N
STOPJustification is required before performing energized work.Contact any ESC
member for help
Perform LOTO up to verification of zero electrical energy state
Perform verification of zero electrical energy state per Diagnostic & Test energized electrical process
Is the task Diagnostic & Test
Is this a routine & repetitive task on a specific piece of equipment
Y
Y Y
Y
Y
Is there a Standing Appendix A1 “Energized D&T Job Briefing Form”in place.
N
Is the task Manipulative N
STOPContact any
ESC memberfor help
Y
N
N
Obtain an Appendix A1 “Energized D&T Job Briefing Form”.Contact any ESC member for help
Y Obtain an Appendix B “Energized Manipulative Electrical Work Permit”.Contact any ESC member for help
Perform energized electrical task per the Standing A1 “Energized D&T Job Briefing Form” requirements.
Perform energized electrical task per the Appendix A1 “Energized D&T Job Briefing Form” requirements.
Perform energized electrical task per the Appendix B “Energized Manipulative Electrical Work Permit ” requirements
Obtain a Standing Appendix A1 “Energized D&T Job Briefing Form ”.Contact any ESC member for help
Functional Area:Elec Safety Eng.ESC ChairEngineeringEngineeringEngineeringEngineeringEngineeringFacilitiesEngineeringFacilitiesFacilitiesFacilities
ESC Membership: Ext.Thomas S. Caronna 4314Robert S. Mueller 2919Michael J. Bell 6183Alan Biocca 7700Robert M. Candelario 5473Dennis G. Collins 7859Michael P. Fahmie 4030Mahesh C. Gupta 5220Tim Kuneli 5450William D. Mattson 5794James W. Murphy 4175Dennis A. Nielsen 4055