IEEE 762 : 2006

Table of Contents

1 Overview
   1.1 Scope
   1.2 Purpose
2 Normative references
3 Definitions
4 Unit states
   4.1 Active
   4.2 Deactivated shutdown
5 Capacity terms
   5.1 Maximum capacity (MC)
   5.2 Dependable capacity
   5.3 Available capacity
   5.4 Seasonal derating
   5.5 Unit derating
   5.6 Planned derating
   5.7 Unplanned derating
   5.8 Installed nameplate capacity
6 Time designations and dates
   6.1 Total hours (TH)
   6.2 Period hours (PH) or active hours (ACTH)
   6.3 Deactivated shutdown hours (DSH)
   6.4 Available hours (AH)
   6.5 Service hours (SH)
   6.6 Reserve shutdown hours (RSH)
   6.7 Unavailable hours (UH)
   6.8 Planned outage hours (POH)
   6.9 Unplanned outage hours (UOH)
   6.10 Forced outage hours (FOH)
   6.11 Maintenance outage hours (MOH)
   6.12 Unit derated hours (UNDH)
   6.13 Planned derated hours (PDH)
   6.14 Unplanned derated hours (UDH)
   6.15 Forced derated hours (FDH)
   6.16 Maintenance derated hours (MDH)
   6.17 Seasonal derated hours (SDH)
   6.18 Equivalent hours (E)
   6.19 Service date (SD)
   6.20 Deactivation date
   6.21 Reactivation date
7 Energy terms
   7.1 Actual generation (AAG)
   7.2 Maximum generation (MG)
   7.3 Available generation (AG)
   7.4 Unavailable generation (UG)
   7.5 Seasonal unavailable generation (SUG)
   7.6 Reserve generation (RG)
   7.7 Derated generation (DG)
8 Performance indexes of an individual unit
   8.1 Planned outage factor (POF)
   8.2 Unplanned outage factor (UOF)
   8.3 Forced outage factor (FOF)
   8.4 Maintenance outage factor (MOF)
   8.5 Unavailability factor (UF)
   8.6 Availability factor (AF)
   8.7 Service factor (SF)
   8.8 Seasonal derating factor (SDF)
   8.9 Unit derating factor (UDF)
   8.10 Equivalent unavailability factor (EUF)
   8.11 Equivalent availability factor (EAF)
   8.12 Gross capacity factor (GCF)
   8.13 Net capacity factor (NCF)
   8.14 Gross output factor (GOF)
   8.15 Net output factor (NOF)
   8.16 Forced outage rate (FOR)
   8.17 Equivalent forced outage rate (EFOR)
   8.18 Equivalent planned outage factor (EPOF)
   8.19 Equivalent unplanned outage factor (EUOF)
   8.20 Equivalent forced outage factor (EFOF)
   8.21 Equivalent maintenance outage factor (EMOF)
   8.22 Mean service time to outage
   8.23 Mean outage duration
   8.24 Starting reliability (SR)
   8.25 Cycling rate (CR) or average run time (ART)
9 Unweighted (time-based) calculations for group performance
   indexes
   9.1 Planned outage factor (POF)
   9.2 Unplanned outage factor (UOF)
   9.3 Forced outage factor (FOF)
   9.4 Maintenance outage factor (MOF)
   9.5 Unavailability factor (UF)
   9.6 Availability factor (AF)
   9.7 Service factor (SF)
   9.8 Seasonal derating factor (SDF)
   9.9 Unit derating factor (UDF)
   9.10 Equivalent unavailability factor (EUF)
   9.11 Equivalent availability factor (EAF)
   9.12 Gross capacity factor (GCF)
   9.13 Net capacity factor (NCF)
   9.14 Gross output factor (GOF)
   9.15 Net output factor (NOF)
   9.16 Forced outage rate (FOR)
   9.17 Equivalent forced outage rate (EFOR)
   9.18 Equivalent planned outage factor (EPOF)
   9.19 Equivalent unplanned outage factor (EUOF)
   9.20 Equivalent forced outage factor (EFOF)
   9.21 Equivalent maintenance outage factor (EMOF)
   9.22 Starting reliability (SR)
   9.23 Cycling rate (CR) or average run time (ART)
10 Capacity-weighted calculations for group performance indexes
   10.1 Weighted planned outage factor (WPOF)
   10.2 Weighted unplanned outage factor (WUOF)
   10.3 Weighted forced outage factor (WFOF)
   10.4 Weighted maintenance outage factor (WMOF)
   10.5 Weighted unavailability factor (WUF)
   10.6 Weighted availability factor (WAF)
   10.7 Weighted service factor (WSF)
   10.8 Weighted seasonal derating factor (WSDF)
   10.9 Weighted unit derating factor (WUDF)
   10.10 Weighted equivalent unavailability factor (WEUF)
   10.11 Weighted equivalent availability factor (WEAF)
   10.12 Gross capacity factor (GCF)
   10.13 Net capacity factor (NCF)
   10.14 Gross output factor (GOF)
   10.15 Net output factor (NOF)
   10.16 Weighted forced outage rate (WFOR)
   10.17 Weighted equivalent forced outage rate (WEFOR)
   10.18 Weighted equivalent planned outage factor (WEPOF)
   10.19 Weighted equivalent unplanned outage factor (WEUOF)
   10.20 Weighted equivalent forced outage factor (WEFOF)
   10.21 Weighted equivalent maintenance outage factor (WEMOF)
Annex A (informative) Correlation between unit state and capacity
        derating definitions
Annex B (informative) Transitions between active states
Annex C (informative) Relationships between period-hour-based
        performance indexes
Annex D (informative) Outside plant management control
Annex E (informative) Glossary of terms and abbreviations
Annex F (informative) Pooling methodologies for EFOR[d]
      F.1 Unweighted pooling
      F.2 Capacity-weighted pooling
Annex G (informative) Limiting conditions for forced outage indexes
Annex H (informative) Bibliography

Abstract

Presents terminology and indexes for reporting electric generating unit reliability, availability, and productivity performance measures while recognizing the power industry's needs, including marketplace competition.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN
Supersedes	IEEE DRAFT 762 : DX 2006