Sequence of Operations (SOO)

Pilot Pre-Flight Checklist

ఒక pilot టేకాఫ్ చేయడానికి ముందు — వారు కేవలం throttleను నెట్టరు:

Engine check
Flaps to position
Runway clearance confirmed
Speed check at V1
Rotate at V2
Gear up at safe altitude

ప్రతి step క్రమంగా ఉండాలి. ఒకదాన్ని miss అయితే — safety compromised అవుతుంది.

AHU Sequence of Operations:

START SEQUENCE:
  Step 1: Confirm no fire alarm active
  Step 2: Open outside air damper → wait 30 seconds
  Step 3: Start supply air fan → confirm run feedback within 5 seconds
           If no feedback in 5 seconds → raise fault alarm, do not proceed
  Step 4: Enable chilled water valve PID control
  Step 5: Enable heating valve PID control
  Step 6: Start return air fan
RUNNING:
  Control supply air temperature at 16°C via CHW valve PID
  Control space temperature at 24°C
  Monitor CO2 → adjust fresh air damper via DCV logic
  Monitor filter DP → alarm if above limit
STOP SEQUENCE:
  Step 1: Close chilled water valve fully
  Step 2: Stop supply air fan
  Step 3: Stop return air fan
  Step 4: Close outside air damper after 60 seconds
FIRE MODE:
  Immediate stop on fire alarm signal
  All dampers close
  Manual restart required — no auto restart on fire

SOO అనేది English language description.
FBD అనేది అదే logic యొక్క visual drawing.
Controller అనేది దానిని run చేసే machine.

SOOను BMS design engineer వ్రాస్తారు. FBDని SOO నుండి program చేస్తారు. Commissioning రెండూ realityకి match అవుతాయని verify చేస్తుంది.