IEEE 762 2007
$44.96
IEEE Standard Definitions for Use in Reporting Electric Generating Unit Reliability, Availability, and Productivity
| Published By | Publication Date | Number of Pages |
| IEEE | 2007 | 78 |
Revision Standard – Active. Reaffirmed March 2012. This standard provides a methodology for the interpretation of electric generating unit performance data from various systems and to facilitate comparisons among different systems. It also standardizes terminology and indexes for reporting electric generating unit reliability, availability, and productivity performance measures. This standard is intended to aid the electric power industry in reporting and evaluating electric generating unit reliability, availability, and productivity while recognizing the power industry’s needs, including marketplace competition. Included are equations for equivalent demand forced outage rate (EFORd), newly identified outage states, discussion of commercial availability, energy weighted equations for group performance indexes, definitions of outside management control (OMC), pooling methodologies, and time-based calculations for group performance indexes.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | IEEE Standard Definitions for Use in Reporting Electric Generating Unit Reliability, Availability, and Productivity |
| 6 | Introduction Notice to users Errata Interpretations Patents |
| 7 | Participants |
| 9 | CONTENTS |
| 13 | 1. Overview |
| 14 | 1.1 Scope 1.2 Purpose 2. Normative references |
| 15 | 3. Definitions |
| 20 | 4. Unit states 4.1 Active 4.1.1 Available |
| 21 | 4.1.2 Unavailable |
| 23 | 4.1.3 Unit starts 4.2 Deactivated shutdown |
| 24 | 4.2.1 Inactive reserve 4.2.2 Mothballed 4.2.3 Retired |
| 25 | 5. Capacity terms 5.1 Maximum capacity (MC) |
| 26 | 5.2 Dependable capacity 5.3 Available capacity 5.4 Seasonal derating 5.5 Unit derating 5.6 Planned derating 5.6.1 Basic planned derating 5.6.2 Extended planned derating 5.7 Unplanned derating 5.7.1 Class 1 unplanned derating (immediate) |
| 27 | 5.7.2 Class 2 unplanned derating (delayed) 5.7.3 Class 3 unplanned derating (postponed) 5.7.4 Maintenance derating 5.8 Installed nameplate capacity |
| 28 | 6. Time designations and dates 6.1 Total hours (TH) 6.2 Period hours (PH) or active hours (ACTH) |
| 29 | 6.3 Deactivated shutdown hours (DSH) 6.4 Available hours (AH) 6.5 Service hours (SH) 6.5.1 Service hours nongenerating (SHNG) 6.6 Reserve shutdown hours (RSH) 6.7 Unavailable hours (UH) |
| 30 | 6.8 Planned outage hours (POH) 6.9 Unplanned outage hours (UOH) 6.10 Forced outage hours (FOH) 6.10.1 Demand factor (f) |
| 31 | 6.10.2 Forced outage hours overlapping the period of demand for the unit to operate (FOHd) |
| 32 | 6.11 Maintenance outage hours (MOH) 6.12 Unit derated hours (UNDH) 6.12.1 In-service unit derated hours (IUNDH) 6.12.2 Reserve shutdown unit derated hours (RSUNDH) 6.13 Planned derated hours (PDH) 6.13.1 In-service planned derated hours (IPDH) 6.13.2 Reserve shutdown planned derated hours (RSPDH) |
| 33 | 6.14 Unplanned derated hours (UDH) 6.14.1 In-service unplanned derated hours (IUDH) 6.14.2 Reserve shutdown unplanned derated hours (RSUDH) 6.15 Forced derated hours (FDH) 6.15.1 In-service forced derated hours (IFDH) 6.15.2 Reserve shutdown forced derated hours (RSFDH) |
| 34 | 6.16 Maintenance derated hours (MDH) 6.16.1 In-service maintenance derated hours (IMDH) 6.16.2 Reserve shutdown maintenance derated hours (RSMDH) 6.17 Seasonal derated hours (SDH) 6.18 Equivalent hours (E) |
| 35 | 6.18.1 Equivalent forced derated hours (EFDH) 6.18.2 Equivalent reserve shutdown forced derated hours (ERSFDH) 6.18.3 Equivalent forced derated hours overlapping period of demand for the unit to generate (EFDHd) |
| 36 | 6.18.4 Equivalent planned derated hours (EPDH) 6.18.5 Equivalent maintenance derated hours (EMDH) 6.18.6 Equivalent unit derated hours (EUNDH) |
| 37 | 6.19 Service date (SD) 6.20 Deactivation date 6.21 Reactivation date |
| 38 | 7. Energy terms 7.1 Actual generation (AAG) 7.2 Maximum generation (MG) 7.3 Available generation (AG) 7.4 Unavailable generation (UG) |
| 39 | 7.5 Seasonal unavailable generation (SUG) 7.6 Reserve generation (RG) 7.7 Derated generation (DG) |
| 40 | 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) |
| 41 | 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) |
| 42 | 8.11.1 EAF excluding seasonal deratings (EAFxs) 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) 8.16.1 Forced outage rate total—generating or other functions (FORT) 8.16.2 Demand forced outage rate (FORd) |
| 43 | 8.16.3 Utilization forced outage probability (UFOP) 8.17 Equivalent forced outage rate (EFOR) 8.17.1 Equivalent forced outage rate total—generating or other functions (EFORT) 8.17.2 Equivalent demand forced outage rate (EFORd) |
| 44 | 8.17.3 Derating adjusted utilization forced outage probability (DAUFOP) 8.17.4 Derating adjusted forced outage rate (DAFOR) |
| 45 | 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 8.22.1 Mean service time to forced outage (MSTFO) 8.22.2 Mean service time to maintenance outage (MSTMO) 8.22.3 Mean service time to planned outage (MSTPO) |
| 46 | 8.23 Mean outage duration 8.23.1 Mean forced outage duration (MFOD) 8.23.2 Mean maintenance outage duration (MMOD) 8.23.3 Mean planned outage duration (MPOD) 8.24 Starting reliability (SR) 8.24.1 Probability of starting failure (Ps) 8.25 Cycling rate (CR) or average run time (ART) |
| 47 | 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) |
| 48 | 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) |
| 49 | 9.10 Equivalent unavailability factor (EUF) 9.11 Equivalent availability factor (EAF) 9.11.1 EAF excluding seasonal deratings (EAFxs) 9.12 Gross capacity factor (GCF) 9.13 Net capacity factor (NCF) 9.14 Gross output factor (GOF) |
| 50 | 9.15 Net output factor (NOF) 9.16 Forced outage rate (FOR) 9.16.1 Forced outage rate total—generating or other functions (FORT) 9.16.2 Demand forced outage rate (FORd) 9.16.3 Utilization forced outage probability (UFOP) 9.17 Equivalent forced outage rate (EFOR) 9.17.1 Equivalent forced outage rate total—generating or other functions (EFORT) |
| 51 | 9.17.2 Equivalent demand forced outage rate (EFORd) 9.17.3 Derating adjusted utilization forced outage probability (DAUFOP) 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) |
| 52 | 9.22 Starting reliability (SR) 9.23 Cycling rate (CR) or average run time (ART) |
| 53 | 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) |
| 54 | 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) |
| 55 | 10.10 Weighted equivalent unavailability factor (WEUF) 10.11 Weighted equivalent availability factor (WEAF) 10.11.1 Weighted EAF excluding seasonal deratings (WEAFxs) 10.12 Gross capacity factor (GCF) 10.13 Net capacity factor (NCF) 10.14 Gross output factor (GOF) |
| 56 | 10.15 Net output factor (NOF) 10.16 Weighted forced outage rate (WFOR) 10.16.1 Weighted forced outage rate total—generating or other functions (WFORT) 10.16.2 Weighted demand forced outage rate (WFORd) 10.16.3 Weighted utilization forced outage probability (WUFOP) 10.17 Weighted equivalent forced outage rate (WEFOR) |
| 57 | 10.17.1 Weighted equivalent forced outage rate total—generating or other functions (WEFORT) 10.17.2 Weighted equivalent demand forced outage rate (WEFORd) 10.17.3 Weighted derating adjusted utilization forced outage probability (WDAUFOP) 10.18 Weighted equivalent planned outage factor (WEPOF) 10.19 Weighted equivalent unplanned outage factor (WEUOF) 10.20 Weighted equivalent forced outage factor (WEFOF) |
| 58 | 10.21 Weighted equivalent maintenance outage factor (WEMOF) |
| 59 | Annex A (informative) Correlation between unit state and capacity derating definitions |
| 60 | Annex B (informative) Transitions between active states |
| 62 | Annex C (informative) Relationships between period-hour-based performance indexes |
| 66 | Annex D (informative) Outside plant management control |
| 68 | Annex E (informative) Glossary of terms and abbreviations |
| 71 | Annex F (informative) Pooling methodologies for EFORd |
| 77 | Annex G (informative) Limiting conditions for forced outage indexes |
| 78 | Annex H (informative) Bibliography |
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