Rating methodology

ELECTRICAL RISK RATING: THE METHOD ADN

Agence De Notation

Our exclusive methodology assesses live working performance (LV and HV TST) and provides a confidence level - from AAA (excellence) to DDD (critical risk) - on your organization's electrical risk.

The 3C Rule - Rating System

THE VIGI-SCORE®

The Vigi-Score is a composite rating based on three independent criteria - the 3C Rule - each assessed from A to D.

C1

Self-Assessment

Organization's self-assessment capability - factual diagnosis.

ABCD
C2

Compliance & Improvement

Adherence to the Professional Recommendation - regulatory compliance.

ABCD
C3

Operational Skills

Operational mastery of professional practices - field-based scoring.

ABCD

Assembly into composite rating

C1A+
C2B+
C3A
ResultABA

Excellence expressed as a Triple A (AAA) - optimal electrical risk management.

Trend indicator + / -

Each criterion can include a progression or regression indicator.

A+Upward trendAStableA-Downward trend

Founding concept

VIGILANCE VULNERABILITY

Two opposing forces that determine your organization's level of electrical risk control and prevention.

VigilanceVulnerability
High vigilanceHigh vulnerability

Vigilance

Organization's proactive ability to anticipate, detect and manage electrical risks.

AB

Vulnerability

Residual risk exposure when vigilance is insufficient.

CD

What triggers a D rating

A few examples of major non-conformities that can result in a D rating on one or more criteria.

O-M-T Observatory · 2022–2025

THE LIVE WORKING MASTERY OBSERVATORY

A unique observatory in France that capitalizes field data to objectively measure electrical risk mastery.

133

DPS completed

43

Companies audited

10 108

Requirements observed

11 000

Field facts

O-M-T Observatory

WHERE DO YOU STAND ?

The AudiMaT cross-analysis of O-M-T observatory results reveals three organization profiles.

"The Grumblers"

The Vulnerable

« We've always done it this way, why change? »
  • Resistance to change and new practices
  • Incomplete or outdated documentation
  • Insufficient training for field workers
  • Safety culture not embedded in daily operations

VULNERABILITY - High accident probability

Median position

The Middle Ground

« We do the bare minimum, that should be enough. »
  • Formal compliance without real ownership
  • Gaps between written procedures and field practices
  • Unstructured continuous improvement
  • Variable engagement across teams

VIGILANCE - Moderate accident probability

Operational excellence

The Talents

« Safety is our culture, not a constraint. »
  • Safety culture integrated at all levels
  • Measurable and documented continuous improvement
  • Regular field training and coaching
  • Proactive anticipation of emerging risks

MASTERY - Low accident probability

Operational mastery of Live Working proportional to compliance with the Recommendation, or beyond.

The 3 systematic improvement areas

VULNERABLE vs TALENTS

ThemeVulnerableTalents
Primary preventionReactive, focused on documentary compliance without field anchoring.Proactive, integrated into daily management with monitoring indicators.
CompetenceQualifications up to date but field skills not regularly assessed.Continuous skills assessment with individualized field coaching.
Live Working coordinationFormal coordination, little structured experience feedback.Dynamic coordination with best practice sharing and systematic REX.
TrainingInitial training only, no refresher adapted to changes.Continuous training pathway adapted to needs identified in the field.

The top 3 gaps

THE TOP 3 GAPS

01

Primary prevention

The most frequent gap: documentary prevention that doesn't translate into concrete, measurable field actions.

02

Skills maintenance

Qualifications are current but actual competencies are neither assessed nor maintained through regular field coaching.

03

Safety coordination

Safety coordination is limited to mandatory meetings without structured exploitation of field experience feedback.

Certification

THE CERTIFICATE CETé ADN®

The CETé ADN certificate attests to your organization's level of electrical risk management, assessed according to our exclusive methodology.

CETé ADN®

Vigi-Score®

ABA

C1

A

C2

B

C3

A

CETé · ADN · AAA-DDD

A certificate that makes the difference

The CETé ADN certificate is the only document that objectively attests to your level of electrical risk management, assessed by an independent agency using a transparent methodology.

  • Triple-letter composite rating from AAA to DDD
  • Independent assessment by certified experts
  • Verifiable online via unique QR code
  • Validity period defined by the CETé Monitoring Committee
  • Recognition by clients and insurers
FAQ

FREQUENTLY ASKED QUESTIONS

What is the Vigi-Score®?

The Vigi-Score® is the composite rating developed by CETé to measure how well an organisation controls electrical risk. It assembles three letters, one per criterion of the 3C Rule, each from A (compliant) to D (critical). AAA reflects excellence, DDD a critical risk. The rating is issued by the monitoring committee after a field diagnosis.

How is the rating calculated (3C Rule)?

Three independent criteria are assessed: the organisation's self-assessment capability (AudiMaT tool), compliance with the professional recommendation, and control of technical gestures observed on a representative worksite. Each criterion receives a letter from A to D; together they form the composite rating, with a trend indicator.

What is live working (TST)?

Live working refers to work performed on electrical installations that remain energised, without interrupting the power supply. It is governed by dedicated reference frameworks and restricted to trained, authorised operators. CETé assesses these practices in both low voltage (LV) and high voltage (HV).

What is the difference between LV and HV live working?

LV live working covers the low-voltage domain (50 to 1,000 volts): connections, distribution networks, metering. HV live working covers high voltage A (1,000 to 50,000 volts) and involves specific methods: at distance, in contact, or at potential. Authorisations and reference frameworks differ for each domain.

What triggers a D rating?

A D rating flags a major non-conformity: for instance the absence of voltage verification and earthing, an unauthorised operator, or a worksite started without authorisation. It reflects high vulnerability and calls for a priority improvement action plan, supported by CETé.

Is a certificate issued?

Yes. After the diagnosis and the rating issued by the monitoring committee, CETé delivers a certificate stating the Vigi-Score® obtained. Each certificate can be verified online through a unique QR code, allowing your clients, principals and insurers to check its authenticity.

Objective AAA

OBJECTIVE AAA

Discover where you stand in electrical risk management and start a continuous improvement journey.

ABCDAAA