Action Priority (AP) Levels

IF Severity >= 9
   THEN AP = High
ELSE IF Severity >= 5 AND Occurrence >= 4
   THEN AP = High
ELSE IF Severity >= 5 OR Occurrence >= 4 OR Detection >= 6
   THEN AP = Medium
ELSE
   AP = Low

Scenario 1: High-severity, low-occurrence failure
  Severity = 4 (Critical)
  Occurrence = 1 (Remote)
  Detection = 2 (High probability of detection)
  
  Result: AP = HIGH
  Reason: Severity >= 5? No. But Severity=4 < 5, so check Medium rule.
          Severity < 5 OR Occurrence < 4 OR Detection < 6? Yes to all.
          → Wait: 4 < 5, so not HIGH by first rule.
          → Severity >= 5? No. So not HIGH.
          → Check Medium: Severity >= 5? No. Occurrence >= 4? No. Detection >= 6? No.
          → Result: AP = LOW
          
  NOTE: This example shows AP's severity-first design: a critical failure 
        with low probability might be LOW if occurrence is rare enough.

Scenario 2: Moderate-severity, frequent failure
  Severity = 3 (Major)
  Occurrence = 5 (Frequent)
  Detection = 1 (Certain detection)
  
  Result: AP = MEDIUM
  Reason: Severity >= 9? No. Severity >= 5 AND Occurrence >= 4? No (3 < 5).
          Severity >= 5? No. Occurrence >= 4? Yes (5 >= 4).
          → AP = MEDIUM (triggered by Occurrence >= 4 rule)

Scenario 3: Very high severity with any occurrence
  Severity = 5 (Catastrophic)
  Occurrence = 2 (Low)
  Detection = 5 (Difficult to detect)
  
  Result: AP = HIGH
  Reason: Severity >= 9? No (5 < 9, but this is max FMEA scale).
          Severity >= 5 AND Occurrence >= 4? No (Occurrence = 2).
          → Still check if Severity >= 5? Yes.
          → But the Medium rule is Severity >= 5 OR Occurrence >= 4...
          → Since Severity = 5 (catastrophic), AP = HIGH via first rule
          
  NOTE: Aerospace safety culture treats catastrophic failures as HIGH 
        regardless of occurrence or detection likelihood.

| Item | Process Step | Failure Mode | Severity | Occurrence | Detection | AP | Risk Control |
|------|--------------|-------------|----------|-----------|-----------|----|----|
| 1    | Assembly     | Fastener missing | 4 | 2 | 1 | M | Visual Inspection Protocol |
| 2    | Welding      | Weld porosity | 5 | 3 | 2 | H | Ultrasonic Test Review |
| 3    | Testing      | Test failure | 2 | 1 | 1 | L | Routine QA |

| Failure Mode | Sev | Occ | Det | RPN | AP |
|--------------|-----|-----|-----|-----|-------|
| Loss of power | 5 | 2 | 1 | 10 | M |
| Data corruption | 4 | 4 | 2 | 32 | M |

## Macro: nxAPBuckets
Counts failure modes by Action Priority level
Parameters: 
  - High: Count of failure modes with AP = H
  - Medium: Count of failure modes with AP = M
  - Low: Count of failure modes with AP = L
  - N/A: Count of unanalyzed or invalid AP values

Example output:
  High:   12 failure modes (15%)
  Medium: 52 failure modes (65%)
  Low:    16 failure modes (20%)
  N/A:     0 failure modes

{
  "columns": [
    {
      "id": "ap",
      "title": "Action Priority",
      "formula": {
        "type": "ap",
        "severity_field": "severity",
        "occurrence_field": "occurrence",
        "detection_field": "detection",
        "high_threshold_sev": 9,
        "high_threshold_sev_occ": [5, 4],
        "medium_threshold_sev": 5,
        "medium_threshold_occ": 4,
        "medium_threshold_det": 6
      },
      "formatter": {
        "type": "ap_color"
      }
    }
  ]
}

{
  "document_type": "ProcessFMEA",
  "columns": [
    {
      "title": "Process Step",
      "field": "processStep"
    },
    {
      "title": "Failure Mode",
      "field": "failureMode"
    },
    {
      "title": "Severity",
      "field": "severity"
    },
    {
      "title": "Occurrence",
      "field": "occurrence"
    },
    {
      "title": "Detection",
      "field": "detection"
    },
    {
      "title": "Action Priority",
      "formula": "ap"
    }
  ]
}

#set( $apHigh = $velocityMacros.nxAPBuckets( "High" ) )
#set( $apMedium = $velocityMacros.nxAPBuckets( "Medium" ) )
#set( $apLow = $velocityMacros.nxAPBuckets( "Low" ) )

<h3>Process FMEA Risk Posture</h3>
<p>
  High Priority: <strong>$apHigh</strong> (red — requires immediate action)<br>
  Medium Priority: <strong>$apMedium</strong> (amber — schedule mitigation)<br>
  Low Priority: <strong>$apLow</strong> (green — acceptable)
</p>