CSA Z462-15, Workplace electrical safety, 3rd Edition, Changes

Canadian Airports Electrical Association

Association Électrique des Aéroports Canadiens

CSA Z462-15, Workplace electrical safety, 3

rd

Edition,

Changes & Impacts

Terry Becker, P.Eng., CESCP, IEEE Senior Member

CSA Z462 First Past Vice-Chair, Voting Member, Annexes Working Group Leader,

CSA Z463 Associate Member, IEEE 1584 Voting Member

ESPS Electrical Safety Program Solutions INC.

C: 403-465-3777 terry.becker@espsi.ca

, www.esps.ca

, www.arcflash-training.ca

, www.eclairdarc.om

Canadian Airports National Electrical Workshop (CANEW) 2014 Regina Page 1

Agenda

•   Disclaimer.

•   Management of Change.

•   CSA Z462, 2 nd Edition Status.

•   Relationship with CSA Z463 Guideline on

Maintenance of Electrical Systems.

•   Status of Arc Flash & Shock PPE, Tools &

Equipment.

•   IEEE 1584 Status.

•   CSA Z462, 3 rd Edition Changes & Impacts.

•   Review, Summary & Questions.

Canadian Airports National Electrical Workshop (CANEW) 2014 Regina

Page 2

Disclaimer

•   Not all potential changes to CSA Z462, 3 rd Edition are presented here. Final changes will depend on final ballot voting of the CSA Z462 Technical

Committee.

•   You are cautioned to consult the approved CSA

Z462, 3 rd Edition when it is published in January

2015 prior to making any changes in any safe work practices that are established.

•   Opinions expressed by the presenter are personal technical opinions. You are advised to consult the

Canadian Standards Association for specific formal interpretation.


Page 3

Management of Change

•   CSA Z462, 3 rd Edition will include significant changes that will require industry to step back from it and consider what has been done to date.

•   We need to manage the changes that the 3 rd

Edition will require to ensure we grow our practices with CSA Z462.

•   Companies will need to ensure they manage the perception related to Risk Assessment.


Page 4

Management of Change, cont’d

•   Significant impact on the “human element” of electrical safety.

•   We have been modifying behaviors and culture and need to continue with this process.

•   CSA Z462, 3 rd Edition will further affect perception of “arc flash.” We need to ensure we do not miss interpret the good information and processes that will be recommended, e.g. Risk Assessment.


Page 5

CSA Z462, 2 nd Edition Status

•   Industry across Canada has accepted CSA

Z462 as a reference standard for electrical hazards.

•   Over 25,000 copies sold to date.

•   Federal, Provincial and Territorial OH&S

Regulators HAVE NOT adopted CSA Z462 into law (e.g. Alberta 2015 possible).

•   CSA Z462 is recognized by OH&S

Regulators in Guidelines.

•   CEC Part 1 updated, Rule 2-304.


Page 6

CSA Z462, 2 nd Edition Status, cont’d

•   CEC Part 1, Rule 2-304 updated and

Appendix B advises that CSA Z462 can be referenced:


Page 7


•   British Columbia Safety Authority (BCSA) issues directives in September 2013 for Rule 2-304:


Page 8


•   BCSA issues directives in September 2013 for Rule 2-304, cont’d:


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Page 13

Relationship with CSA Z463 Guideline on

Maintenance of Electrical Systems

•   CSA Z463 published March 2014.

•   Focuses on companies establishing Electrical

Equipment Maintenance Programs.

•   Places emphasis on electrical safety when performing electrical equipment maintenance.

•   Advises incident energy may be higher than calculated if maintenance not performed.

•   Recommends CSA Z462 be referenced to manage electrical safety issues.


Page 14

Status of Arc Flash & Shock PPE, Tools &

Equipment

•   Some new developments or existing products you may not have been aware of.

•   Ensure effective management of existing Arc

Flash & Shock PPE, Tools & Equipment.

•   New developments in lens technology.

•   Improvements in fibres and weaved fabrics that are layered to create lower oz weight arc flash suits. Less heat generated for work and easier to work in.


Page 15


Equipment

•   Poor management.


Page 16


Equipment

•   Poor management.

!


!

!

Page 17


Equipment

•   What happens to arc rated clothing when it is exposed to incident energy?


Page 18


Equipment

•   New lens technology, “near clear” arc rated face shield.


Page 19


Equipment

•   Arc flash suit hoods, LED lamps and 12 cal/ cm2 ATPV option instead of arc rated face shield and arc rated balaclava.


Page 20


Equipment

•   Arc flash hood design changes, but only available to 43 cal/cm2 ATPV.


Page 21


Equipment

•   Shotgun hot stick arc flash shield.


Page 22


Equipment

•   Arc flash suppression blankets.


Page 23


Equipment

•   DMM probe extenders, actually takes hands outside the Restricted Approach Boundary, but need guards. Lower shock risk exposure.


Page 24


Equipment

•   DMMs and amprobes available with remote displays, lowers frequency of exposure.


Page 25

IEEE 1584 Status

•   IEEE-NFPA Arc Flash Phenomena Project ongoing.

•   Still not finalized. Current revision is still valid. 1800 arc flashes recorded for data.

•   New model “should” be finalized in 2015.

•   Validating existing formulas.

•   There will be some changes.

•   Do not panic and do not over react. Existing formulas provide good results.


Page 26

CSA Z462, 3 rd Edition Changes & Impacts

•   Significant changes are coming e.g. Risk

Assessment.

•   We need to manage them so they are correctly understood and not miss interpreted.

•   Core of CSA Z462 is the same, de-energize is the first choice, justify energized electrical work, and complete electrical hazard analysis.

•   Energized Electrical Work Permit may be required.


Page 27

CSA Z462, 3 rd Edition Changes & Impacts, cont’d

•   Clause 3 Definitions & Global Changes:

–   Electrical Hazard Analysis changed to:

•   Electrical Hazard Risk Assessment

–   Arc Flash Hazard Analysis changed to:

•   Arc Flash Risk Assessment

–   Shock Hazard Analysis changed to:

•   Shock Risk Assessment

–   Hazard/risk category changed to:

•   Arc Flash PPE Category

–   Deleted ALL references to HRC.


Page 28


•   Clause 3 Definitions and Global Changes:

–   Boundary, Prohibited Approach [DELETED]

–   Hazard [ADDED]

–   Hazardous [ADDED]

–   Risk [ADDED]

–   Risk Assessment [ADDED]

–   Qualified Person: One who has demonstrated skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to identify and avoid the hazards involved.


Page 29


•   Clause 3 Risk:

–   A combination of the likelihood of occurrence of injury or damage to health and the severity of injury or damage to health that results from a hazard.


Page 30


•   Clause 3 Risk Assessment:

–   Is an overall process that identifies hazards, estimates the potential severity of injury or damage to health, estimates the likelihood of occurrence of injury or damage to health, and determines if protective measures are required.


Page 31


•   Electrical Safety Program Clause relocated to beginning of Clause 4.

•   Clause 4.1.5.2:

–   The electrical safety program shall include elements that consider condition of maintenance of electrical equipment and systems.

•   Clause 4.1.5.7:

–   Risk Assessment Procedure now outlined in CSA

Z462, 3 rd Edition to be included in Electrical Safety

Program.


Page 32


•   Clause 4.1.5.7 Risk Assessment Procedure:

–   Qualified Electrical Worker performs this related to the specific energized electrical work task performed.

•   Identify Electrical Hazards (e.g. harm).

•   Assess likelihood (e.g. Frequency, Probability and Avoidance).

•   Determine risk and implement risk controls according to a hierarchy of methods.

–   Iterative process to reduce risk to as low as reasonably practicable (ALARP).


Page 33


•   Clause 4.1.5.7 Risk Assessment Procedure:


Page 34


•   Use Severity and Likelihood of Occurrence to determine Risk as Low, Medium or High.

•   If your company has a Risk Assessment

Process and Risk Matrix already, use it with

CSA Z462 Annex F. Example of Risk Matrix:


Page 35


•   Emergency Procedures updated. Clarify

“Contact Release.”

•   Qualified Persons, now require competency at Risk Assessment.

•   Prohibited Shock Approach Boundary will be deleted. Redundant to the Restricted

Approach Boundary.

•   Hazard/risk category Tables will be deleted and replaced with a new Arc Flash Hazard

Identification Table.


Page 36


•   Clause 4.3.2.3 Energized Electrical Work

Permit changes:

–   Required when work is performed within the

Restricted Approach Boundary.

–   When the worker interacts with the equipment when conductors or circuit parts are not exposed but an increased likelihood of injury from an exposure to an arc flash hazard exists.


Page 37


•   Clause 4.3.2.3.3 Exemptions to work permit changes:

–   An energized electrical work permit shall not be required if a qualified person is provided with and uses appropriate safe work practices and PPE in accordance with Clause 4 under any of the following conditions:

•   Testing, troubleshooting and voltage measuring,

•   Thermography and visual inspections if the restricted approach boundary not crossed,


Page 38


•   Clause 4.3.2.3.3 Exemptions to work permit changes, cont’d:

•   Access and egress to an area with energized electrical equipment if no electrical work is performed and the restricted approach boundary is not crossed, and

•   General housekeeping and miscellaneous non-electrical tasks if the restricted approach boundary is not crossed.


Page 39


•   Shock Hazard Analysis changed to Shock

Risk Assessment. Table 1A updated:


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•   Clause 4.3.2.2.4 Normal Operation:

Is now defined to be used when assessing probability of an arcing fault and an arc flash event occurring. Normal operation is:

1.

  Equipment is properly installed.

2.

  Equipment is properly maintained.

3.

  Doors are closed and secured.

4.

  Covers are in place and secured.

5.

  No evidence of impending failure.


Page 43


•   Clause 4.3.5 Arc Flash Risk Assessment:

An arc flash risk assessment shall be performed and shall:

1.

  Determine if an arc flash hazard exists. If an arc flash hazard exists, the risk assessment shall determine:

•   Appropriate safety related work practices;

•   The Arc Flash Boundary; and

•   The PPE that personnel within the Arc Flash

Boundary shall use.


Page 44


•   Clause 4.3.5 Arc Flash Risk Assessment, cont’d:

2.

  Be updated when a major modification or renovation takes place. It shall be reviewed periodically, at intervals not to exceed 5 years, to account for changes in the electrical distribution system that could affect the results of the analysis.

3.

  Take into consideration the design of the overcurrent protective device and its opening time, including its condition of maintenance.


Page 45


•   Clause 4.3.5.4 Arc Flash PPE:

The reference to Methods is changed to:

–   Incident energy analysis method:

•   See Annex D for information on estimating incident energy.

•   For information on selection of arc rated clothing and other PPE, see Annex H, Table H.2 and Table H.3.

–   Arc flash PPE Category method:

•   Updated Tables 4A, 4B, 4C, and 5.

•   Arc rated clothing selected based on Arc Flash PPE

Category.


Page 46


•   Hazard/risk categories are deleted.

•   When using the new tables, clothing is now designated as “Arc Flash PPE Category.”

•   The equivalent of the old HRC ‘0’ is deleted, there is no “Arc Flash PPE Category 0.”

•   100% natural fibre clothing is still the minimum requirement when there is a risk of exposure to an arc flash. Clothing under arc rated clothing is to be natural fibre nonmeltable.


Page 47


•   Table 4A, Arc flash hazard identification for alternating current (ac) and direct current

(dc) systems.

•   Table 4B, Arc flash PPE categories for alternating current (ac) systems.

•   Table 4C, Arc flash PPE categories for direct current (dc) systems.

•   Table 5, Personal protective equipment [Arc

Flash PPE Category].


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•   New Table 4A:


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•   New Table 4B:


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•   New Table 4C:


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•   New Table 5:


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•   Table 5, Arc Flash PPE Categories:


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•   Clause 4.3.5.5 Equipment labeling:

–   Changes to content related to Risk Assessment and new Arc Flash PPE Category.

–   Nominal system voltage;

–   Arc Flash Boundary; and (see next slide)


Page 54


•   Clause 4.3.5.5 Equipment labeling:

–   At least one of the following:

•   (i) Available incident energy and the corresponding working distance, or the arc flash PPE category in Table 4B or 4C for the equipment BUT NOT BOTH .

•   (ii) minimum arc rating of PPE; or

•   (iii) site specific level of PPE.

–   Date that the information was determined.


Page 55


•   Annexes:

–   Minor updates to most Annexes due to additions related to Risk Assessment.

–   Annex B added reference to CSA Z463.

–   Annex C deleted Prohibited Approach.

–   Annex H updated to reflect new Arc Flash PPE

Category Tables.

–   New Annex U added on Human Performance and workplace electrical safety.


Page 56

Review, Summary & Questions

•   Management of Change required.

•   Change Management and employee and contractor behaviour management need to be included in your Plan.

•   Perception of Qualified Electrical Workers will be negative when it comes to Risk

Assessment. We need to deal with this.

•   You will have to review how the changes impact your documentation.


Page 57

Review, Summary & Questions, cont’d

•   Do not over react to changes in IEEE 1584 that will also be coming. Consider where the anomalies are, plan what you do.

•   Do not relabel everything. Communicate changes to workers in Bulletins and updated

Procedures. Educate on the changes and workers manage.

•   Review new arc rated clothing, shock related tools & equipment on an ongoing basis.

Upgrade as required.


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•   Update FLHA /FLRA related documents.

•   Advise workers of the changes and your company expectations.


Page 59


•   Ensure you review and update your

Electrical Safety Program and related procedures in 2015 to reflect the changes that will be approved.

QUESTIONS?

THANKS for listening! Be safe at work and home!

Terry Becker, P.Eng. terry.becker@espsi.ca

, 403-465-3777 www.esps.ca

, www.arcflash-training.ca

, www.eclairdarc.com


Page 60

CSA Z462-15, Workplace electrical safety, 3rd Edition, Changes

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Changes & Impacts

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CSA Z462-15, Workplace electrical safety, 3rd Edition, Changes