Power System Studies

Arc Flash Hazard Analysis

NFPA 70E-compliant arc flash studies with IEEE 1584-2018 calculations, PE-stamped and labeled.

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Overview

Arc flash incident energy quantifies the thermal hazard a worker faces when interacting with energized equipment. We model your facility in ETAP or EasyPower, run IEEE 1584-2018 calculations against your actual protective device settings, and produce field-ready warning labels and a PE-stamped report that satisfies OSHA 1910.333 and NFPA 70E article 130.

What's included

Scope of work

Equipment data collection (single-line review, nameplate verification, site walk)

System modeling in ETAP or EasyPower with verified impedances

Short-circuit analysis at every studied bus

IEEE 1584-2018 incident energy calculation for working distances appropriate to each enclosure

PPE category determination and boundary calculation

Per-equipment ANSI Z535-compliant warning labels (printed and shipped)

PE-stamped final report

Methodology

How the engagement runs

We agree on inputs, responsibilities, and deliverables before the work begins, then keep the design decisions connected through each stage.

Arc Flash Hazard Analysis: how the engagement runs

  1. 1Field data collection
    Single-line verification, panel and equipment nameplate capture, protective device settings recorded as-found.
  2. 2System modeling
    Network built in ETAP or EasyPower with verified utility contributions, transformer impedances, and cable lengths.
  3. 3Short-circuit and incident energy calculation
    IEEE 1584-2018 equations evaluated at each bus, with sensitivity checks on relay clearing time.
  4. 4Mitigation review
    Where energy exceeds 40 cal/cm² or PPE limits, we identify upstream relay adjustments, ZSI, or maintenance switch additions to reduce exposure.
  5. 5Labels and report
    ANSI Z535 labels printed and shipped. PE-stamped report covers methodology, results, and recommendations.

Engineering scope

Project-specific

Disciplines, deliverables, licensing, and sealing requirements confirmed for your project before work begins.

Response

1 day

We respond to every inquiry within one business day to discuss scope, next steps, and the information needed for a proposal.

Veteran-owned

VOSB / SDVOSB

SAM.gov registered. UEI H6HAZKAD4LJ7 · CAGE 08E02. Set-aside eligible.

When you need it

Triggers

  • →OSHA citation or insurance audit finding
  • →New construction or major service equipment change
  • →Relay setting changes or upstream utility upgrades
  • →Five-year NFPA 70E review interval reached
  • →Facility acquisition or change of ownership

What you receive

Deliverables

  • PE-stamped arc flash study report (PDF)
  • Printed ANSI Z535 warning labels for every studied bus
  • Updated single-line diagram
  • Short-circuit study results (often delivered as a companion document)
  • ETAP or EasyPower model file (on request)

FAQ

Common questions

How often do arc flash studies need to be updated?+

NFPA 70E article 130.5(G) requires review every five years, or whenever a major modification or renovation could change available fault current. Whichever comes first applies.

Do you provide PPE program training along with the study?+

On request, yes. We can deliver a tailored NFPA 70E refresher session for facility maintenance and operations staff as a follow-up engagement.

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Let’s define the right scope for your project.

Share your project location, current plans, and target schedule. We’ll follow up to confirm the scope and information needed for a proposal.

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