Computation of Next Schedule Value / Date

Next Schedule Date (NSD) / Next Schedule Value (NSV) re-computation based on 'Change Type' and existence of Open Escalation, depending on various values is given below:

Change Type / Open Escalation

Scenario

NSD re-computation basis

NSV re-computation basis

Correction

On copy of interval

  1. "Mfr. Date" if task is not complied even once

  2. "Compliance Update Basis" (Time Window or Actual Completion) set in the last instance of compliance.

  1. Entered Threshold Value.

  2. "Compliance Update Basis" (Time Window or Actual Completion) set in the last instance of compliance.

Re-baseline

On copy of interval

"Last Performed Date and time" entered by the user if exist, else NSD is not re-computed.

"Last Performed Value" entered by the user if exist, else NSD is not re-computed.

If Open Escalation exists for tasks

On copy of position based schedules

  1. If Last Performed Date / Value is re-baselined, NSD / NSV is computed based on re-baselined ‘Last Performed Date / Value’.

  2. If NSD / NSV is re-baselined, NSD / NSV is not recomputed.

If schedules are copied from position based schedules, the Computation basis controls ‘Next Due Calc. On‘ and ‘Calc. Ref. Value / Date” will be updated as given in the table below, based on the re-computation of NSD / NSV in the Component Maintenance Program:

Condition

Next Due Calc. On

Calc. Ref. Value / Date

If Re-computation is done based on Time Window

PBS - Time Window

Corresponding Due date and time / value

If Re-computation is done based on 'Actual Completion'

PBS - Actual Completion

Corresponding actual completion date and time / value

If Change Type is set as 'Re-baseline'

PBS - Manual : Re-baseline

User entered Last Performed Date and Time / Value or Not Applicable

If Re-computation is done based on 'Threshold' or 'Repeat Interval'

Initial interval

Threshold Value / interval  or Not Applicable

If Re-computation is done based on Last Performed Date / Value of Parent task; Related Task Compliance

PBS - RTC

Last Performed Date and Time / Value of parent task

If Re-computation is done based on Last Schedule Date / Value ; Short Term Escalation

PBS - STE : Last Schedule

Last schedule Date and Time / Value

If Re-computation is done based on Actual Completion ; Short Term Escalation

PBS - STE : Actual Completion

Actual complied Date and Time / Value

If Re-computation is done based on installation date

PBS - Installation Date

Installation date

If Re-computation is done based on Mde. Date

PBS - Mfr. Date

Installation Date and time

Note: Last Schedule Value / Date is always updated with ‘Schedule Date and Time or Value’ on last compliance.

If schedules are copied from template, "Next Due Calc. On" controls will be updated with the values as given in the above table, without the prefix ‘PBS’.