Just found this and though it’s John Deere, it’s opened up another area of research. Take a look - not a panacea, but something if it is applicable to Cummins:
OMSU56643
Here’s the text in case that link is wonky (looks wonky...):
US EPA Qualified Emergency Use — SCR Derate Override Option
This is a US EPA only option.
Operating the engine without emissions related derates could damage the aftertreatment system.
Description: US EPA Qualified Emergency Use – SCR Derate Override Option
Under the US EPA’s regulations the Qualified Emergency SCR Derate Override Option (Emergency SCR Derate Override) is considered an Auxiliary Emission Control Device (AECD), which is only permitted during qualified emergency situations. To ensure compliance with US EPA regulations governing this type of AECD it is important that operators read the following information and comply with the requirements.
Emergency SCR Derate Override enables a Selective Catalyst Reduction (SCR) equipped application to operate without emissions-related derates for a specified period of time during qualified emergency situations. A qualified emergency situation is one in which the condition of an engine’s emission controls poses a significant direct or indirect risk to human life. An example of a direct risk is an emission control condition that inhibits the performance of an engine being used to rescue a person from a life-threatening situation. An example of an indirect risk is an emission control condition that inhibits the performance of an engine being used to provide electrical power to a data center that routes ‘‘911’’ emergency response telecommunications.
Emergency SCR Derate Override Activation / Reporting
The operator can activate the Emergency SCR Derate Override through the operator interface. Once activated, the engine can operate free of emissions-related derates for 120 hours. If the derate condition is corrected during the 120 hours, the Emergency SCR Derate Override can be paused in order to preserve the remainder of time for future use. The option expires along with any remaining time 240 hours after the Emergency SCR Derate Override is activated.
When the Emergency SCR Derate Override has expired, the engine informational Diagnostic Trouble Code (DTC) is displayed to the operator upon every engine start and every hour until acknowledged by the operator. To clear the DTC and reset the Emergency SCR Derate Override timer for future use, the operator (or other person responsible for the engine/equipment) must submit a report to the John Deere Dealer Technical Assistance Center, which must include the following:
Contact name, mail and email addresses, and telephone number for responsible company or entity
Description of the emergency situation, the location of the engine during the emergency, and the contact information for an official who can verify the emergency situation (such as a county sheriff, fire marshal, or hospital administrator)
Reason for the Emergency SCR Derate Override activation during the emergency situation, such as the lack of diesel exhaust fluid, or the failure of an emission-related sensor when the engine was needed to respond to an emergency situation
Engine’s serial number
Description of the extent and duration of the engine operation while the Emergency SCR Derate Override was active, including a statement describing whether or not the Override was manually deactivated after the emergency situation ended
In no event may this report be submitted to John Deere or other qualified service provide later than 60 calendar days after the Emergency SCR Derate Override is activated.
LEGAL Notification
The following actions by the operator are an improper use of the Emergency SCR Derate Override and are prohibited by the Clean Air Act and US EPA regulations:
Activating the Emergency SCR Derate Override for something other than a qualified emergency situation;
Failing to disable the Emergency SCR Derate Override after a qualified emergency situation ends; and,
Failing to notify John Deere and send it reports as required in this Operators Manual and federal regulations. Note: John Deere is required to report to the US EPA the operator’s failure to report to it any Emergency SCR Derate Override event (to the extent it becomes aware of such event).
The maximum civil penalty the US EPA may assess under 40 CFR 1068.101 is $4,454 for each day an engine or piece of equipment is operated in violation of the requirements associated with the Emergency SCR Derate Override.
US EPA regulations governing the Emergency SCR Derate Override can be found at 40 CFR §1039.665, as may be amended.
DX,SCR,EMRGNCY,OVERIDE,US-19-
Linear Mode
