SAHAS
Assess functional health
A machine can keep running while its ability to deliver the required output declines. SAHAS helps reliability and maintenance teams examine that change using operating data and a healthy reference.
SAHAS — System Asset Health Assurance Service — combines functional-health assessment with MEC engineering review. The current S1 assessment uses SMAC — SAHAS Machine Available Capacity — to support decisions about the agreed asset and operating conditions.
How an assessment works
1. Define the question
Define the required duty: a pump’s flow and pressure, the operating envelope, and the point at which it can no longer meet that duty. Select the asset, assessment period and decision to support—inspection, intervention timing or continued operation.
2. Establish a healthy reference
Review measured variables, sampling, timestamps, missing data and operating coverage. Relate inputs and outputs to the machine’s function, prepare representative analysis blocks, and select a healthy reference covering the relevant duty and control conditions.
3. Assess and review
Assess SMAC, Health Margin and their trends against the reference and required duty. Estimate remaining useful life from the current margin and its rate of change under the operating assumptions. Review the findings with design information, maintenance history and operating events.
What the results tell you
The assessment report brings together equipment condition, available capacity, observable fault indications, trends and calculated RUL. Risk-ranked findings and recommendations connect the analysis to inspection priorities, intervention planning and spare-parts readiness.
Why operating context matters
Observability means the measured inputs and outputs contain enough information to reveal the change being investigated. A new pattern may reflect degradation, a different duty, a control change or a sensor issue. Engineering review separates these possibilities using reference coverage and operating history.
What to bring to a first discussion
Bring the asset duty and design information, a list of measured variables with sampling intervals, and available operating and maintenance history. Identify trips, repairs and control changes. Together we define the assessment question, suitable records, technical participants and the data-transfer arrangements.
