Data Reporting Instructions

These Data Reporting Instructions were developed to assist utility personnel in reporting information to the North American Electric Reliability Corporation’s (NERC) Generating Availability Data System GADS). This reporting system, initiated by the electric utility industry in 1982, expands and extends the data collection procedures begun by the industry in 1963. NERC GADS is recognized today as a valuable source of reliability, availability, and maintainability (RAM) information. This information, collected for both total unit and major equipment groups, is used by analysts industry-wide in numerous applications. GADS maintains operating histories on more than 5,000 generating units. As of January 1, 2013, GADS reporting became mandatory for conventional generating units that are 20 MW and larger. GADS is open to any organization (domestic or international) that operates electric generating facilities and is willing to follow the GADS reporting requirements.

 
  
  
  
2018 GADS Cause Codes.xlsx2018 GADS Cause Codes1/1/2018
2018 GADS Data Reporting Instructions.pdf2018 GADS Data Reporting Instructions1/1/2018
Amplification Codes.xlsxAmplification Codes1/23/2018
Appendix_A_Change_of_Unit_Status.pdfAppendix_A_Change_of_Unit_Status1/1/2018
Appendix_B1_Fossil_Steam_Unit_Cause_Codes.pdfAppendix_B1_Fossil_Steam_Unit_Cause_Codes1/1/2018
Appendix_B2_Fluidized_Bed_Combustion_Units_Cause_Codes.pdfAppendix_B2_Fluidized_Bed_Combustion_Units_Cause_Codes1/1/2018
Appendix_B3_Nuclear_Unit_Cause_Codes.pdfAppendix_B3_Nuclear_Unit_Cause_Codes1/1/2018
Appendix_B4_Diesel_Unit_Cause_Codes.pdfAppendix_B4_Diesel_Unit_Cause_Codes1/1/2018
Appendix_B5_Hydro_Pumped_Storage_Unit_Cause_Codes.pdfAppendix_B5_Hydro_Pumped_Storage_Unit_Cause_Codes1/1/2018
Appendix_B6_Gas_Turbine_Unit_Cause_Codes.pdfAppendix_B6_Gas_Turbine_Unit_Cause_Codes1/1/2018
Appendix_B7_Jet_Engine_Unit_Cause_Codes.pdfAppendix_B7_Jet_Engine_Unit_Cause_Codes1/1/2018
Appendix_B8_Combined_Cycle_CoGeneration_Block_Cause_Codes.pdfAppendix_B8_Combined_Cycle_CoGeneration_Block_Cause_Codes1/1/2018
Appendix_B9_Geothermal_Unit_Cause_Codes.pdfAppendix_B9_Geothermal_Unit_Cause_Codes1/1/2018
Appendix_C_Utility_and_Identification_Codes.pdfAppendix_C_Utility_and_Identification_Codes1/1/2018
Appendix_D_List_of_major_components.pdfAppendix_D_List_of_major_components1/1/2018
Appendix_E_Unit_Design_Data_forms.pdfAppendix_E_Unit_Design_Data_forms1/1/2018
Appendix_E1_Fossil_Steam.pdfAppendix_E1_Fossil_Steam1/1/2018
Appendix_E2_Fluidized_bed.pdfAppendix_E2_Fluidized_bed1/1/2018
Appendix_E3_Nuclear.pdfAppendix_E3_Nuclear1/1/2018
Appendix_E4_diesel.pdfAppendix_E4_diesel1/1/2018
Appendix_E5_Hydro_or_Pumped_Storage.pdfAppendix_E5_Hydro_or_Pumped_Storage1/1/2018
Appendix_E6_Gas_Turbine_or_Jet_Engine.pdfAppendix_E6_Gas_Turbine_or_Jet_Engine1/1/2018
Appendix_E7_miscellaneous.pdfAppendix_E7_miscellaneous1/1/2018
Appendix_E8_CC and Block.pdfAppendix_E8_CC and Block1/1/2018
Appendix_F - Equations.pdfAppendix_F - Equations2/7/2018
Appendix_G  Examples and Recommendations.pdfAppendix_G  Examples and Recommendations1/1/2018
Appendix_H_Failure_Mechanism_Codes.pdfAppendix_H_Failure_Mechanism_Codes1/1/2018
Appendix_I_data_release_guidelines.pdfAppendix_I_data_release_guidelines1/1/2018
Appendix_J_Cause_code_amplification_codes.pdfAppendix_J_Cause_code_amplification_codes1/1/2018
Appendix_K_Outside_Plant_Management_Control.pdfAppendix_K_Outside_Plant_Management_Control1/1/2018
Appendix_L1_calculating_combined_cycle_and_co-generation_block_data.pdfAppendix_L1_calculating_combined_cycle_and_co-generation_block_data1/1/2018
Appendix_L2_calculating_combined_cycle_and_co-generation_block_data.pdfAppendix_L2_calculating_combined_cycle_and_co-generation_block_data1/1/2017
Appendix_M_Differences.pdfAppendix_M_Differences1/1/2017
Appendix_N_Changes to DRI from 2017 to 2018.pdfAppendix_N_Changes to DRI from 2017 to 20181/1/2018
Section_1_Introduction.pdfSection_1_Introduction4/27/2018
Section_2_Data_Scope_and_Transmittal.pdfSection_2_Data_Scope_and_Transmittal4/27/2018
Section_3_Event_Reporting.pdfSection_3_Event_Reporting4/27/2018
Section_4_Performance_Reporting.pdfSection_4_Performance_Reporting4/27/2018
Section_5_Design_Data_Reporting.pdfSection_5_Design_Data_Reporting4/27/2018
Table_of_Contents.pdfTable_of_Contents4/27/2018