Muskrat Falls Project - Exhibit 26 Page 1 of 14 FORCED OUTAGE RATES 2006 UPDATE

Transcription

1 Page 1 of 14 FORCED OUTAGE RATES 2006 UPDATE System Planning December

2 Page 2 of INTRODUCTION The Forced Outage Rates (FOR) used as a basis for STRATEGIST modeling are derived from the Canadian Electrical Association s (CEA) Annual Report on Generation Equipment Status. This report presents statistics on the performance of generating units on an annual and on an average performance basis over a five-year period. This update is based on statistics from CEA s 2004 Report. The average performance data from January 1, 2000, through December 31, 2004, are used in the development of FOR input data into STRATEGIST. The tables containing the pertinent data to each class of generating unit discussed below are presented in Appendix A of this report. 2. HYDRAULIC UNITS For the Hydraulic Units, the Derating Adjusted Forced Outage Rate (DAFOR) is the value used to model the FOR in STRATEGIST. DAFOR is the ratio of the equivalent forced outage time to equivalent forced outage time plus total equivalent operating time. 2.1 Existing NLH Hydraulic Units FOR data for existing NLH hydro units are based on the actual operating history of the units. The Generating Unit Performance Report section of the Newfoundland and Labrador Hydro, 2004 Generating Equipment Status Report presents the operating experience of NLH s facilities. The weighted average value (DAFOR) is used to model the FOR in STRATEGIST. 2.2 Future NLH Hydraulic Units Since future hydro units owned by NLH are expected to be maintained in the same manner as NLH s existing hydro units, the FOR is modeled in STRATEGIST the same as the existing NLH hydro units. 2.3 Other Hydraulic Units The FOR for NP, DLP, AP and NUG hydraulic units are based on the Canadian average rate (DAFOR) of all reporting units in the 5 23 MW, or MW classification, as appropriate. This data is presented in the CEA Report in Table THERMAL UNITS 3.1 Existing Holyrood Steam Units The FOR for the Holyrood Steam Units are also modeled using the DAFOR. Table of the CEA Report presents the Canadian average performance data 1

3 Page 3 of 14 for fossil units of all fuel types. The MW classification is used to represent the Holyrood units. 3.2 Combustion Turbine Units For the Combustion Turbine Units, the Utilization Forced Outage Probability (UFOP) is the value used to model the FOR in STRATEGIST. The UFOP represents the probability that a generating unit will not be available when required. This best models the intended service of these peaking units. Table of the CEA Report presents the Canadian average data for combustion turbine units. The All Units classification is used to model the FOR for all combustion turbines on the system. 3.3 Diesel Units NLH stopped reporting statistics on diesel unit outages after Therefore, the last comprehensive five year statistic for Diesel Unit operating performance would be found in the 1986 CEA Report. Since the Hawke s Bay and St. Anthony diesels operate as standby/peaking units, the average UFOP of the Hawke s Bay units from Table 45 is used to model FOR in STRATEGIST. 3.4 Future Thermal Units The FOR used for future thermal units are modeled the same as comparable existing units. Units in NLH s portfolio of future alternatives that will be unique to the system (i.e. no similar unit existing on the system) are described below: Combined Cycle Combustion Turbine: A FOR of 5% is modeled in STRATEGIST. This value is drawn from the Holyrood Generating Station, Combined Cycle Plant Study Update, November, Labrador Infeed: A FOR of 0.89% is modeled in STRATEGIST based on Shawmont Report SMR

4 Page 4 of 14 Appendix A Forced Outage Data from CEA Report Forced Outage Rate Summary & Comparison to Previous Update Impact of FOR changes on System LOLH Source Data: NLH Hydraulic Generating Unit Five Year Data (copy from CEA Report) 3

5 Page 5 of 14 FORCED OUTAGE RATES 2004 CEA ANNUAL REPORT GENERATION EQUIPMENT STATISTICS I. Main Hydraulic Units Unit DAFOR (%) Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Hinds Lake 1.20 Upper Salmon 1.16 Cat Arm Cat Arm Paradise River 1.78 Granite Canal 3.41 Source: NLH Operating Experience from II. Other Hydraulic Units (Existing & Future) Unit DAFOR (%) 5-23 MW MW 1.58 Source: CEA Typical Table III. Fossil Fuel Units Forced Outage Rates 2006 Update - Tables.xls Unit DAFOR (%) Holyrood - 1,2, (All Fuel) Source: CEA Typical Table MW Classification for Holyrood.

6 Page 6 of 14 IV. Gas Turbine Units Unit UFOP (%) Holyrood Stephenville Hardwoods Green Hill Salt Pond Source: CEA Typical Table Average - All Units V. Diesel Units Unit UFOP (%) Hawke's Bay 1.18 St. Anthony 1.18 Source: NLH Operating Experience from Table 45. Taken from 1986 CEA Annual Report since NLH stopped reporting Data after VI. Future Thermal Units Fossil Units: Unit DAFOR (%) 150 MW Oil 9.64 (All Fuel) Gas Turbines: Unit UFOP (%) MW Source: CEA Typical Tables 6.2.2, MW; & 6.3.2, All Units. Forced Outage Rates 2006 Update - Tables.xls

7 Page 7 of 14 FORCED OUTAGE RATES SUMMARY SHEET (I) (II) (III) COMMENT UNIT DAFOR UFOP FOR Planning % % % % Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Weighted Average based on Bay D'Espoir Bay D'Espoir units & Hinds Bay D'Espoir Lake, Upper Salmon, Cat Bay D'Espoir Arm and Paradise River. Hinds Lake Upper Salmon Cat Arm Cat Arm Paradise River Granite Canal Future Hydro Gas Turbine Holyrood Diesel (Standby) CCCT Lab. Infeed (Gull Is. to Sol. Pd.) NP Hydro 3.19 DLP Hydro 3.19 A/P Hydro 2.26 Weighted Average based on Gfalls & Bfalls Capacities (I) 2006 CEA Annual Report ; Generating experience over 5 yr. period. (II) CCCT: "Holyrood Generating Station, Combined Cycle Plant Study Update", November 2001 Labrador Infeed: Shawmont Report ; SMR (III) As used in Strategist Forced Outage Rates 2006 Update - Tables.xls

8 Page 8 of 14 FORCED OUTAGE RATES SUMMARY & COMPARISONS Unit February 2005 Update December 2006 Update CEA As Used for CEA As Used for Statistics Planning Statistics Planning Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Bay D'Espoir Hinds Lake Upper Salmon Cat Arm Cat Arm Granite Canal Paradise River Future Hydro Gas Turbine Holyrood Diesel (Standby) CCCT Lab. Infeed (Gull to Sol. Pd.) NP Hydro DLP Hydro AP Hydro Forced Outage Rates 2006 Update - Tables.xls

9 Page 9 of 14 IMPACT OF FORCED OUTAGE RATE CHANGES ON SYSTEM LOLH Existing System OLD NEW YEAR LOLH LOLH ** Basis for comparison drawn from "2004 Base Case - May 25.SAV" Forced Outage Rates 2006 Update - Tables.xls

10 Page 10 of CO CX)- CO CX)- (0 0101( (33(3304 (Xi )- CO (X)- 0) IX) (X) sa &o- MAXI('UM ON11NUOUS RAThJG (MW) The effect of Maximum Continuous Rating on ABNOF by year for hydraulic generating units. CLASSIFICATION BY MCR (MW) UNIT ABNOF SYN.CD OP NO. OF TOTAL MAXIMUM MEAN FOR DAFOR DAUFOP TOTAL EQ. IC8F FAIL MOF POF YEARS (%) FACTOR FACTOR FORCED F.O.T. F.O.D. F.O.D. (%) (%) (%) OUT. TIME (%) RATE (%) (%) (A) (%) (%) OUTAGES (A) (H) (H) (A) , , , , , , , ,480, , , & OVER CLASSIFICATION BY YEAR OF SERVICE ST ND RD , ,97 4TH TH TH - 10TH , , TH - 15TH , TH - 20TH , , ST - 25TH , TH.30TH ST.35TH , , TH -40TH , ST.45TH , , TH.50TH , T-55TH , TH & OVER 1, , , CLASSIFICATIO N BY OPERATING FACTOR , , , , , , , , , , , , , , , , ALL UNITS 3, , ,

11 Page 11 of 14 z n I (0- (0 01 (12 (( (( (0- CX) 01 ( (0- CX) 01 (( (0- CX) 01 ( fl MAXMJM cdn11nuous RA11NG (MW) The effect of Maximum Continuous Rating on ABNOF by year for fossil generating units. UNIT ABNOF OP NO. OF TOTAL MAXIMUM MEAN FOR DAFOR DAUFOP TOTAL EQ. ICBF FAIL MOF POF YEARS (%) FACTOR FORCED F.O T. F.O.D. F.O.D. (%) (%> % OUT. TIME (%) RATE (%) (%) (A> (%) OUTAGES (A> (H> (H> (A> CLASSIFICATION BY MC R (MW) , , , , , , CLASSIFICATION BY YEAR OF SERVICE 5TH TH - 10TH TH - 15TH TH - 20TH ST -25TH TH -30TH , ST - 35TH , , TH -40TH , ST -45TH , TH & OVER CLASSIFICATION BY OPERATING FACTOR , , , , , , , , , , , ALL UNITS , ,

12 Page 12 of 14 ForCed j Maintenance Ranned 10 : :1J IQF Operating Factor ABNOF/5 Yearly Comparison of ICbF, Operating Factor and ABNOF for combustion turbine generating units. UNIT ABNOF SYNCD OP NO. OF TOTAL MAXIMUM MEAN FOR UFOP DAUFOP SR ICBF FAIL MOF POF... YEARS (%) FACTOR FACTOR FORCED EDT EO.D F.O.D (~) (~) (%) (%) RATE (~) (~) (A) (%) (%) OUTAGES (A) (H) (H) CLASSIFICATION BY M CR (MW) , , , , & OVER , CLASSIFICATION BY YEAR OF SERVICE , ST , ND TH TH - 10TH TH - 15TH TH - 20TH , ST - 25TH , TH - 30TH , ST - 35TH , TH -40TH , IST-45TH TH & OVER , , CLASSIFICATION BY OPERATING FACTOR , , , , , ALL UNITS ,

13 Page 13 of 14 S GA24OR1 C A N A D I A N E L S C T R I C I T Y A S S 0 C I A T I 0 N DATE : EQUI PMENT RELIABILITY INFORMATION SYSTEM PAGE : 1 GENERATING UNIT PERFORMANCE REPORT GA - RP4O FOR UTILITY : Newfoundland And Labrador Hydro FOR PERIOD : :00 :00 TO :00 :00 EXTERNAL CAUSES : Excluded Hydraulic Generating Unit UNIT ABNOF SYN.CD OP OP NO. TOT MAX MEAN FOR DAFOR TOT EQ. ICBF FAIL ATTEMPTED SUCCESSFUL MOF POF HOURS (8) FACTOR TIME FACTOR FORCED F.O.T. F.O.D. F.O.D. (%) (%) OUT.TIME (%) RATE STARTS STARTS (%) (%) (H) )%) (N) (8) OUTAGES (N) (H) (H) (H) Bay D'Espoir Bay DEspoir , , Bay DEspoir , , Bay D'Espoir , , Bay DEspoir , , Bay D'Espoir , , Hay D'Espoir , , Bay D'Espoir , , Hind's Lake Hind's Lake , , Upper Salmon Upper Salmon , , , , , , , , , , ,

14 Page 14 of 14 GA24OR1 C A N A D I A N E L E C T R I C I T Y A S S 0 C I A T I 0 N DATE : EQUI PMENT RELIABILITY INFORMATION SYSTEM PAGE : 2 GENERATING UNIT PERFORMANCE REPORT GA - RP4O FOR UTILITY : Newfoundland And Labrador Hydro FOR PERIOD : :00 :00 TO :00 :00 EXTERNAL CAUSES : Excluded Hydraulic Generating Unit UNIT ABNOF SYN.CD OP OP NO. TOT MAX MEAN FOR DAFOR TOT EQ. ICBF FAIL ATTEMPTED SUCCESSFUL MOP POP HOURS (%) FACTOR TIME FACTOR FORCED F.O.T. P.0.0. F.O.D. (%) (%) OUT.TIME (%) RATE STARTS STARTS (%) (%) (H) (%) (H) (%) OUTAGES (H) (H) (H) (H) Cat Arm Cat Arm , , Cat Arm , , Paradiae River Paradise River , , Granite Canal Granite Canal , , , , , , , Hydraulic Generating Unit: 13.