CHI And Risk Matrix


Asset Managers need accurate and reliable information to achieve the asset management goals e.g. doing right maintenance, asset utilization, value creation and life extension. Assessing the integrity of electrical assets by doing the right maintenance at the right time will be the key driver for today's asset management initiatives. The necessity to achieve maintenance excellence or even increase operational effectiveness with simultaneous costs reduction is the biggest challenge faced by the asset managers. Conventional maintenance activities require a time-consuming and expensive shut-down of the equipments. Condition Based Maintenance (CBM) is one of the most effective maintenance techniques that can overcome this issue through providing real-time condition or status information of the equipments which assist asset managers to determine appropriately the maintenance frequency based on the information collected through condition monitoring technique and reduces the downtime.

RUP Consultants Plus Inc used their proprietary algorithm to calculate the Condition Health Index (CHI) for the electrical equipment tested to assess the remaining life assessment. The condition indicators used for calculating the CHI are Inspection, Electrical Test Results, O&M history and Age. The Equipment Condition Index is used for decision-making regarding equipment condition based maintenance regime as shown in the Table below.

Cable Condition Based Maintenance Regime
Condition Health Index Value Suggested Course of Action
? 7.0 and ? 10.0 (Good) Continue O&M without restriction. Maintain the normal frequency of maintenance tests every 3 years interval.
? 3.0 and < 7.0 (Fair) Repeat maintenance tests every year.
? 0.0 and < 3.0 (Poor) Reduce the load based on expert judgment and arrange for replacement of section(s). If necessary online condition assessment such as partial discharge monitoring can also be undertaken while waiting for the replacement.

Risk Matrix

Risk is managed by a combination of:

  • Reducing the probability of the failure, through the capital and maintenance work program and enhanced working practices
  • Reducing the impact of failure, through contingency and emergency plan development

Management of risk is undertaken by the asset management team, which directs the identification, analysis, prioritization and treatment of risks across the organization. Organization should have a suite of contingency plans in place developed under the framework of risk reduction, readiness, response and recovery.