Addressing Electrical SafetyAddressing Electrical SafetyRobert ChristiansenRobert Christiansen

Hormel Foods CorporationHormel Foods Corporation

Realize The Need For Electrical Safety!Realize The Need For Electrical Safety!

Electrical HazardsElectrical HazardsElectrical Shock/ElectrocutionElectrical Shock/Electrocution

30,000 nonfatal electrical shock 30,000 nonfatal electrical shock accidents/yearaccidents/year1000 electrocution fatalities/year1000 electrocution fatalities/year44thth leading cause of fatalitiesleading cause of fatalities

ArcArc--FlashFlashTemperatures to 35,000 degreesTemperatures to 35,000 degreesClothing ignitionClothing ignition2,000 people hospitalized/year 2,000 people hospitalized/year

50 cal/cm22000 psf

< 740 mph

1800 °F

Visible

UV

IR

165 db35,000 °F

ARC BlastARC Blast

Blending OSHA and NFPA Into An Blending OSHA and NFPA Into An Electrical Safety ProgramElectrical Safety Program

OSHAOSHA –– 1910.3311910.331--335, 1910.269, 335, 1910.269, ANSI Z535ANSI Z535

Policy/ProgramPolicy/ProgramPPEPPESafe Work ProceduresSafe Work ProceduresEmployee TrainingEmployee Training

NFPA 70 ENFPA 70 EHazard Assessment StudiesHazard Assessment StudiesLabel Program Label Program Safe Approach Distances Safe Approach Distances Job Planning Job Planning Energized Work PermitEnergized Work Permit

Define An Electrical Safety PolicyDefine An Electrical Safety Policy

OSHA RegulationsOSHA Regulations

Employee TrainingEmployee Training

Safe Work Practices Safe Work Practices

Personal Protection ProceduresPersonal Protection Procedures

PPEPPE

Hazard AssessmentsHazard Assessments

Management of ChangeManagement of Change

Labeling Labeling

Energized Electrical Work Energized Electrical Work PermitsPermits

Electrical Safety Policy

OSHA Subpart S-Electrical, 1910.269

NFPA 70E, ANSI Z535 Annual Review Date: _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________

Conduct Electrical Hazard Conduct Electrical Hazard Assessment StudiesAssessment Studies

Electrical Hazard Assessment Electrical Hazard Assessment Studies Determine:Studies Determine:

Nominal Voltage Nominal Voltage

Shock Approach DistancesShock Approach Distances

Incident Energy Incident Energy

Flash Protection BoundariesFlash Protection Boundaries

PPEPPE

Phase I Phase I –– Power Distribution Power Distribution EquipmentEquipment

Phase II Phase II –– Processing Processing EquipmentEquipment

Standardize Approach Standardize Approach Boundaries for Work Boundaries for Work ““OnOn”” Or Or ““NearNear”” Energized EquipmentEnergized Equipment

• Limited Approach Boundary

• Qualified persons• Unqualified person

ONLY if supervised by Qualified person

• PPE required

• Restricted Approach Boundary

• Qualified Persons ONLY• PPE required

Electrical Panel

Qualified Worker

• Prohibited Approach Boundary

• Qualified Persons Only• PPE as if direct contact

with live part

12”

1”

60”

Simplify Personal Protective Simplify Personal Protective Equipment (PPE) RequirementsEquipment (PPE) Requirements

+ +

Standard Electrical PPEStandard Electrical PPE

Our studies indicate that Our studies indicate that 90% of plant electrical 90% of plant electrical hazards fall into the blue hazards fall into the blue hazard levelhazard level

Mandatory for all Mandatory for all Maintenance who work on Maintenance who work on electrical systemselectrical systems

Mandatory for all who are Mandatory for all who are within 60 inches of exposed within 60 inches of exposed live electrical partslive electrical parts

Implement An Electrical Hazard Implement An Electrical Hazard Labeling ProgramLabeling Program

Label color communicates the Label color communicates the electrical hazard risk level and PPE electrical hazard risk level and PPE requirement to employeerequirement to employee

Labels meets ANSI Z535 Labels meets ANSI Z535 requirements for color and signal requirements for color and signal wordword

Label Colors and Hazard Levels:Label Colors and Hazard Levels:

Blue Blue –– category 0category 0

Yellow Yellow –– categories 1 &2categories 1 &2

Orange Orange –– categories 3 &4categories 3 &4

Red Red –– category 5category 5

Electrical Hazard Risk CategoriesElectrical Hazard Risk Categories

Red labels represent incident energy over 40 cal/cm2

and work must be performed de-energized.

Hazard Risk / Label ColorHazard Risk / Label Color Incident Energy (cal/cmIncident Energy (cal/cm22))

00 0 0 -- 1.21.211 1.2 1.2 –– 4422 4 4 –– 8833 8 8 –– 252544 25 25 -- 4040

Source: NFPA 70E

Use the greater of 60” or Flash Hazard Boundary!

Know Your LabelCalculated incident energy, at distance shown, determining hazard risk category.

Hazard risk category, and PPE requirements based on incident energy.

Name or ID of specific electrical equipment for which this label is produced.

Shock Distances

Limited: Unqualified workers must be kept away from exposed energized parts.

Restricted: Qualified workers must use shock protection PPE.

Prohibited: Considered same as being in direct contact with energized parts.

Required glove class protecting against voltage and shock hazard.

Equipment voltage determining the shock approach boundaries.

Enforce Safe Work Procedures Enforce Safe Work Procedures

Policy is to perform electrical Policy is to perform electrical work dework de--energizedenergized

Type and magnitude of energyType and magnitude of energyLocation of disconnect(s)Location of disconnect(s)5 step shutdown and restart 5 step shutdown and restart proceduresprocedures

Test Test -- verify verify -- test for zero test for zero energy stateenergy stateVoltage rated insulated tools Voltage rated insulated tools

Implement An Energized Implement An Energized Electrical Work PermitElectrical Work Permit

Energized electrical work requires Energized electrical work requires management approval management approval Work permit ensures:Work permit ensures:

hazards are clearly understood hazards are clearly understood PPE requirements for safe work are met PPE requirements for safe work are met Justification for subjecting Qualified worker to Justification for subjecting Qualified worker to potential hazardspotential hazards

Permit required to be posted at work sitePermit required to be posted at work site

1 - Job Briefing and Planning Checklist Complete this checklist first to prepare for safe work on energized electrical equipment in conjunction with the work permit.

PREPARE FOR EMERGENCY

Phone location: Emergency phone #:

Equipment Shutoff Location:

Means of Restricting Access: Barricade Watch person:

Radio communication needed and available: Circle Y or N ERT radio #:

ASK

Standby or watch person CPR and First Aid trained: Yes No

Can equipment be de-energized? Yes No (If no, PERMIT REQUIRED)

Location of required emergency equipment:

Are backfeeds, foreign or secondary circuit source to be worked upon possible? Yes No

Can backfeeds, foreign or secondary circuit source be locked or disabled? Yes No (If no, PERMIT REQUIRED)

IDENTIFY

Identified the electrical hazards? Yes No

Other hazards? Fall Confined space Other

Unusual work conditions: Yes No List:

Number of people to do the job (including stand by person):

Who is in charge?

REVIEW

Job plan and job location Safety procedures Unexpected events

Electrical prints and one line drawings Correct tools and equipment PPE and Voltage

VERIFY

Job Briefing complete

Job Briefing Leader Date

COMPLETE WORK PERMIT

Complete the work permit on the other side of this document before performing energized electrical work.

2 - Energized Electrical Work Permit

This permit is NOT required for troubleshooting & testing of energized electrical equipment. Complete this permit for repairs and / or replacement of energized electrical equipment and components.

Work order #: Date:

Location: Expires: ________________________

Description:

Energized work justification (Production or being inconvenienced by de-energizing are not acceptable reasons):

HAZARD INFORMATION

Arc Flash Hazard: Cal/cm2 Hazard Voltage: Circle Category: 0 1 2 3 4 Boundaries: < 600 volts 600-15,000 volts Use the greater of 60” or Flash protection boundary.

Limited Approach: 60” 60” Restricted Approach: 12” 26”

Flash Protection Boundary:

__________________ If Unknown 60” Default

Prohibited Approach: 1” 7”

PROTECTIVE EQUIPMENT & PRECAUTIONS

Standard Electrical PPE (8 cal fire resistant long sleeve shirt and pants, electrically rated hard hat, plastic framed safety glasses, hearing protection, electrically rated leather work shoes and cotton or natural fiber undergarments) plus:

Arc face shield Insulating leather gloves Insulating blanket / mat

40 cal Arc Flash suit Voltage rated tools Buddy System

AUTHORIZATION

The workers listed below are the only ones authorized to perform the work. No work other than what is listed may be performed without additional approval. By initialing this work permit, the below listed acknowledge: 1) Work can be performed safely as described, 2) Are qualified to perform energized electrical work, 3) Have been fully briefed and understand potential hazards.

Print name: Initials: Date: Print name: Initials: Date:

APPROVAL

Energized work on this permit is Approved Not Approved

Signature, Operation Manager/Supervisor Date

Signature, Maintenance Engineering Manager/Supervisor Date

WORK COMPLETED

Signature, Qualified Worker Date

Signature, Maintenance Engineering Manager/Supervisor Date Post work permit during task and forward to Safety Manager after completion.

Customize Employee Training Customize Employee Training

Qualified CertificationQualified Certification

Unqualified AwarenessUnqualified Awareness

Role of the SupervisorRole of the Supervisor

Qualified RefresherQualified Refresher

Implement Your Electrical Safety Program Now!Implement Your Electrical Safety Program Now!

Questions?Questions?

Thank You!Thank You!

Approach Boundaries for Closed Equipment

Qualified Worker or

Unqualified

Closed Electrical Panel