Equipment Availability & Utilization (KPI)

Calculate Mechanical Availability (MA) and Use of Availability (UA) mining KPIs.

💡 Engineering Knowledge PrimerMechanical Availability (MA) measures the percentage of calendar time an asset is mechanically capable of operating. Utilization of Availability (UA) measures how effectively available operating time is utilized by plant operators.

OPERATING LIMITS — Definitions vary by site; confirm the time-classification convention before comparison.

INPUT DESIGN PARAMETERS (SI)

Operating Hours (OH)[h]

Maintenance Down Hours (MH)[h]

Standby / Idle Hours (SBY)[h]

CALCULATED SPECIFICATION OUTPUT

Mechanical Availability (MA)

📦

89.7 %

Utilization of Availability (UA)

83.9 %

Related planning checklists

This calculator appears in the following engineering planning checklists:

OEE, Takt Time & Production Capacity Assessment

Plant Operations Manager

1. Takt Time & Required Production Rate2. Cycle Time & Production Capacity3. Overall Equipment Effectiveness (OEE)4. Equipment Availability & Utilization (KPI)

Technical Methodology & Engineering Principles

GOVERNING EQUATION

MA = [ OH / (OH + MH) ] × 100% UA = [ OH / (OH + SBY) ] × 100%

Assumptions & Scope

Time categories based on AS 2429 / Global Mining Guidelines (GMG).

Operating Range & Boundary

Use finite, physically meaningful inputs within the stated operating assumptions.

Peer Reference: GMG Time Classification Framework for Open Pit Mining (2019).