Contractor Performance Management
Contractor Trade / Scope Workforce TRIR Score Grade Status Valid Until

Status Distribution

Prequalification Grades

Average Score by Criterion

Avg Score by Trade

The prequalification model follows IOGP Report 423 (HSE management — guidelines for working together in a contract environment), ISO 45001:2018 (clause 8.1.4 — procurement, contractors & outsourcing) and the ILO-OSH 2001 framework. Contractors are scored against nine weighted criteria (0–4 rating each); the weighted score determines the grade and approval status. Safety statistics use the OSHA TRIR (recordable cases × 200,000 / hours worked) and LTIF (LTIs × 1,000,000 / hours worked) formulas.

1. Planningscope & risk level
2. Prequalificationcapability screening
3. Selection & AwardHSE in tender evaluation
4. Mobilization & Executionmonitoring & audits
5. Final Evaluationclose-out & feedback
Criterion Weight What to verify (evidence)

Grading bands

GradeScoreOutcome
A≥ 85%Approved — prequalified for all risk levels
B70 – 84%Approved with conditions — minor gaps, action plan required
C50 – 69%Conditional — low-risk scopes only, improvement plan & re-assessment
D< 50%Not approved — does not meet minimum HSE requirements
Date / TimeActionReferenceDetailsUser
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Trades / Scopes of Work

Register the trades / scopes you contract out (e.g. civil works, electrical, scaffolding, drilling, catering) — they appear as suggestions in the contractor form.

Prequalification Validity

Best practice (IOGP 423): re-assess contractors periodically — typically every 2 years, or sooner after a serious incident or major scope change. Contractors within the warning window are highlighted in the register.