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Maintenance KPIs*

Gul Bahar Shah
  Maintenance KPIs* Maintenance KPIs are measurable indicators that track the effectiveness, efficiency, and reliability of maintenance programs. The most critical ones include Mean Time Between Failures (MTBF), Mean Time to Repair (MTTR), Planned Maintenance Percentage (PMP), and Overall Equipment Effectiveness (OEE), all of which directly impact downtime, costs, and asset longevity. ⚙️ Key Maintenance KPIs to Track 🧩 1. Mean Time Between Failures (MTBF) Formula: Total Uptime ÷ Number of Failures Measures reliability of assets. Higher MTBF = fewer breakdowns, better preventive maintenance. 🔧 2. Mean Time to Repair (MTTR) Formula: Total Downtime ÷ Number of Repairs Indicates responsiveness and repair efficiency. Lower MTTR = faster recovery, less production loss. 📊 3. Planned Maintenance Percentage (PMP) Formula: (Planned Maintenance Hours ÷ Total Maintenance Hours) × 100 Shows how much work is proactive vs. reactive. World-class target: >80% planned maintenance. 🏭 4. Overal...
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Key Fuel Chemistry Parameters in Boilers

Gul Bahar Shah
  Fuel Chemistry for Boiler A good boiler operator should not only operate the boiler — he should also understand the chemistry of combustion Knowing ✔ Fuel composition ✔ GCV ✔ LEL & UEL ✔ Air–fuel ratio ✔ Flame behavior helps improve efficiency, safety and combustion control. Key Fuel Chemistry Parameters in Boilers 🔥 1. Calorific Value Represents the energy content of the fuel. High-calorific fuels (natural gas, oil, high-grade coal) → higher steam output, faster combustion. Low-calorific fuels (biomass, low-grade coal) → require more fuel, longer combustion time, reduced efficiency. 💧 2. Moisture Content High moisture absorbs furnace heat to evaporate water, lowering combustion temperature. Results in reduced steam generation and higher fuel consumption. Pre-drying biomass or using low-moisture fuels improves boiler efficiency. 🧪 3. Volatile Matter Fuels rich in volatiles ignite quickly, providing immediate heat. High volatile fuels (wood, lignite, agro-waste) → rapi...
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The Complete EVM Cheat Sheet Every PMP Aspirant Needs

Gul Bahar Shah
The Complete EVM Cheat Sheet Every PMP Aspirant Needs   EVM Cheat Sheet – PMP Essentials 🧩 1. Core Terms Planned Value (PV) – Budgeted cost of work scheduled. Earned Value (EV) – Budgeted cost of work actually performed. Actual Cost (AC) – Actual cost incurred for work performed. Budget at Completion (BAC) – Total planned budget for the project. Estimate at Completion (EAC) – Forecasted total cost at project completion. Estimate to Complete (ETC) – Expected cost to finish remaining work. Variance at Completion (VAC) – Difference between BAC and EAC. 🔧 2. Variance Formulas Cost Variance (CV) = EV – AC Schedule Variance (SV) = EV – PV Interpretation: Positive = Ahead/Under budget Negative = Behind/Over budget 📊 3. Performance Indexes Cost Performance Index (CPI) = EV ÷ AC Schedule Performance Index (SPI) = EV ÷ PV Interpretation: 1 = Good performance <1 = Poor performance 🧠 4. Forecasting Formulas EAC (Typical Performance) = BAC ÷ CPI EAC (Atypical Performance...
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Fire Pump Room Components as per NFPA 20

Gul Bahar Shah
Fire Pump Room Components as per NFPA 20 NFPA 20 (Standard for the Installation of Stationary Fire Pumps for Fire Protection) specifies the design, layout, and equipment required in a fire pump room to ensure reliability and compliance. 🧩 1. Core Pumping Equipment Main Fire Pump – Electric or diesel-driven, sized to meet building fire protection demand. Jockey Pump – Maintains system pressure, preventing unnecessary fire pump starts. Standby Pump (if required) – Provides redundancy for critical facilities. 🔧 2. Controllers & Electrical Systems Fire Pump Controller – Manages start/stop sequences, alarms, and monitoring. Automatic Transfer Switch (ATS) – Ensures reliable power supply for electric pumps. Battery Systems – For diesel engines, ensuring reliable startup. 🔄 3. Valves & Piping Suction Header – Connects to water supply tank or mains. Discharge Header – Connects to sprinkler/standpipe systems. Check Valves & OS&Y Gate Valves – Prevent backflow and all...
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