Hydro Plant Risk Assessment Guide

E11.11 TIER 1 – EMERGENCY CLOSURE SYSTEM CONDITION INDEX
CALCULATIONS
Enter the Emergency Closure Systems condition indicator scores from the tables above into the
Emergency Closure Systems Assessment Summary Form at the end of this document. Multiply
each indicator score by its respective Weighting Factor, and sum the total scores to arrive at the
Tier 1 Emergency Closure System Condition Index.
E11.12 TIER 1 – EMERGENCY CLOSURE SYSTEM DATA QUALITY INDICATOR
The Emergency Closure Systems Data Quality Indicator reflects the quality of the inspection,
test, and measurement results used to evaluate the condition of the emergency closure system
under Tier 1. The more current and complete the results are, the higher the rating for this
indicator. A condition assessment schedule appropriate for scoring the Data Quality Indicator is
shown in Table 9. Alternatively, an organization’s recommended or standard practice for
performing the emergency closure system tests and inspections may be substituted for the time
intervals given in the table.
Results are analyzed and applied to Table 9 to arrive at an appropriate Emergency Closure
System Data Quality Indicator Score.
Table 9 – Emergency Closure System Data Quality Indicator Scoring
Data Quality
Years Since Last Condition Assessment
Indicator Score
< 8 years 10
≥ 8 and < 17 years 7
≥ 17 and < 25 years 4
≥ 25 years 0
Enter the Emergency Closure System Data Quality Indicator Score from Table 9 into the
Emergency Closure System Condition Assessment Summary form at the end of this document.
E11-13