Facility Maintenance

Units:	-
Mode:	Input/Output Only
Max Bands:	1
Default Value:	0
Validation Rule:	Any Value
Key Property:	No
Description:	Capacity lost to maintenance
Detail:

Input

Facility Maintenance is the production capacity on maintenance outage. This can be defined using a Variable or passed as an input from an Interleaved simulation to coordinate maintenance outages between models.

Output

The definition of the Maintenance as an output varies by simulation phase:

LT Plan

Maintenance reports the derating applied to capacity to account for Maintenance Rate:

Maintenance = ∑ ( b ) ( Maintenance Rate_b × (Max Operating Level - Outage Rating_b)

where:
b indexes the bands of Maintenance Rate

PASA

Maintenance is the sum of the user-defined maintenance and the 'idealized' maintenance profile:

Maintenance = Discrete Maintenance + Distributed Maintenance

MT Schedule and ST Schedule

Maintenance reports the capacity on maintenance from the realized maintenance events (combination of user-defined and those generated by PASA). Thus for any given event:

Maintenance =∑ ( b ) (Max Operating Level - Outage Rating_b) × Units Out_b

Note that if MT Schedule Chronology = "Partial" then multiple discrete events may combine together in any given period as a function of the slicing of the duration curves and thus this profile may then resemble a sculpted derating rather than discrete events.