Modules · Event analysis · Module 076
EOP-012-3 Cold Weather Reliability Event Corrective Action Plans
Cold weather derates and outages found in your plant data, checked against each unit's Extreme Cold Weather Temperature, and the corrective action plan timetable tracked.
About this module
What this module covers.
EOP-012-3 R6 requires each Generator Owner, after experiencing a Generator Cold Weather Reliability Event at a generating unit that has a calculated Extreme Cold Weather Temperature (ECWT) at or below 32 degrees Fahrenheit (zero degrees Celsius) and that self-commits or is required to operate at or below that temperature, to develop and implement a Corrective Action Plan (CAP) to address the identified freezing issues. The CAP for the affected unit is due before the first day of the first December following the event (December 1 of the following calendar year for events in September, October, or November). The Generator Owner must also review other units in its fleet with the same or similar equipment within 12 calendar months of the event, and implement corrective actions on those units within 24 calendar months of completing the review or no later than 36 calendar months following the event. Each CAP must include a summary of the identified cause or causes, the freeze protection actions, any operating limitations that apply until implementation, the updates to the cold weather preparedness plan, and the implementation timetable. A CAP extension request goes to the Compliance Enforcement Authority when circumstances beyond the Generator Owner's control prevent meeting the timetable.
This module screens your plant's supervisory control and data acquisition (SCADA) data for candidate Generator Cold Weather Reliability Events, compares the recorded dry-bulb temperature with the unit's ECWT, and carries each event through determination, the CAP, the fleet review, and any extension request, with the standard's deadlines tracked as tasks.
Module: 076
Kind: Event analysis
Governing body: NERC
Applies to: Operating plants
Typical time: Days per event, not weeks
Dashboard capabilities
- Your plant record holds each unit's ECWT with its calculation date and temperature data source (R1.1), and whether the unit self-commits or is required to operate at or below 32 degrees Fahrenheit; a unit whose ECWT is above zero degrees Celsius, or that does not self-commit or operate at or below 32 degrees Fahrenheit, is marked not applicable with the reason.
- Your SCADA exports are screened for candidate R6 events: real power held more than 10% of nameplate and at least 20 megawatts (MW) below the pre-episode level, or at zero, for more than four continuous hours, with dispatch curtailment screened out and episodes that cross midnight joined across consecutive days.
- When your export carries dry-bulb temperature, each episode's minimum temperature is compared with the ECWT: an episode at or below zero degrees Celsius and at or above the ECWT is a candidate event, an episode with no temperature on file is held for review, and each one shows its minimum dry-bulb reading, the ECWT, the derate depth, and the duration.
- From a candidate event you open the EOP-012-3 workflow with the episode, temperature, and ECWT already filled in, and carry it through event determination (freezing cause, event type of derate, start-up failure, or forced outage, and findings; start-up failures are entered by hand), the R6.3 CAP (cause summary, actions, interim operating limitations, cold weather preparedness plan updates, and timetable), the R6.2 fleet review of other units with the same or similar equipment, and any R6.4 extension request.
- Every deadline is tracked as a task: the CAP before the first December 1 after the event (with the September to November rule applied), the fleet review 12 months after the event, and implementation on other units 24 months after the review or 36 months after the event, whichever is earlier.
- You receive a final report listing the cause, actions, operating limitations, plan updates, and timetable.
Support services
What GridStrong does inside this module.
Task 1: Develop Compliance Procedure
- Create an audit-ready compliance procedure for meeting the EOP-012-3 R6 requirements, working collaboratively across your engineering, operations, and compliance departments. This includes:
- Identifying applicable assets, functions, subject matter experts (SMEs), roles, responsibilities, and ownership
- Determining specific actions and evidence to demonstrate compliance with specific requirements and measures
- Conducting a gap analysis comparing current practices with the standard's requirements, identifying missing processes, incomplete documentation, any staff training needed, etc.
- Developing clear step-by-step procedures for EOP-012-3 R6 that align with your internal controls and documentation policies, including event determination, CAP development, fleet review, and extension requests
- Establishing compliance timelines that align with the standard's deadlines (December 1 CAP, 12-month fleet review, 24 and 36-month implementation)
- Defining specific compliance evidence per site
Task 2: Cold Weather Event Analysis (for each Generator Cold Weather Reliability Event)
- Review the plant data, temperature records, and operator logs for the event
- Determine whether the event was a Generator Cold Weather Reliability Event and identify the freezing cause or causes
- Develop the CAP content required by R6.3, including operating limitations and cold weather preparedness plan updates
- Review other units in your fleet with the same or similar equipment for susceptibility to the identified freezing issues
- Prepare a CAP extension request when the timetable cannot be met because of circumstances beyond your control
Final deliverables
- Task 1: Compliance procedure for EOP-012-3 R6.
- Task 2: Corrective Action Plan and event report for each Generator Cold Weather Reliability Event, including cause, actions, operating limitations, plan updates, timetable, and the fleet review.
What we need from you
- SCADA exports of plant real power, dispatch setpoint, and dry-bulb temperature for the event period.
- Each unit's ECWT, its calculation date, and temperature data source.
- Whether the unit self-commits or is required to operate at or below 32 degrees Fahrenheit.
- Your cold weather preparedness plan, operator logs, and maintenance records for the event.
Assumptions and considerations
How the scope is bounded.
- You supply the site-specific documentation and event data needed for each event analysis.
- The screen identifies candidate events; whether an event had a freezing cause is determined by the reviewing engineer.
- Start-up failures are not detected from SCADA data and are entered by hand.
- The ECWT on file is your R1 calculation; this module does not recalculate it.
- We do not assume liability for any data or information you supply that is inaccurate or incorrect.
Other modules
Every module runs on the same record.
Run this module on one site.
Tell us the plant and the deadline. An engineer confirms the inputs, the schedule and what the Dashboard needs from you.