diff --git a/src/aeros_simulation/model.py b/src/aeros_simulation/model.py
index 0c3ecd0..c5d533b 100644
--- a/src/aeros_simulation/model.py
+++ b/src/aeros_simulation/model.py
@@ -12,7 +12,6 @@ class AerosSimulation(Base, DefaultMixin):
     started_at = Column(DateTime, nullable=True)
     completed_at = Column(DateTime, nullable=True)
     input = Column(JSON, nullable=True)
-    result = Column(JSON, nullable=True)
     error = Column(JSON, nullable=True)
     simulation_name = Column(String, nullable=False)
     schematic_name = Column(String, nullable=False)
diff --git a/src/aeros_simulation/utils.py b/src/aeros_simulation/utils.py
index 2f8dd62..11f14a0 100644
--- a/src/aeros_simulation/utils.py
+++ b/src/aeros_simulation/utils.py
@@ -1,10 +1,12 @@
+import json
+
+
 def calculate_eaf(
         available_hours: float,
         period_hours: float,
         actual_production: float,
         ideal_production: float,
         downtime_hours,
-        plot_data
     ):
         """
         Calculate EAF using the time-based method from PLN document
@@ -24,7 +26,7 @@ def calculate_eaf(
         try:
                 # Calculate lost production
                 lost_production = ideal_production - actual_production
-                max_capacity = plot_data.max_flow_rate
+                max_capacity = 660
                 # Calculate total equivalent derate and outage hours
                 total_equivalent_derate_and_outage_hours = lost_production / max_capacity if max_capacity > 0 else 0
                 total_equivalent_derate = total_equivalent_derate_and_outage_hours - downtime_hours
@@ -86,4 +88,44 @@ def calculate_derating(data_list, max_flow_rate: float = 660) -> float:
                         total_time_below_max += time_interval
                         print(f"Derating hours: {time_interval:.2f}")
 
-        return total_time_below_max
\ No newline at end of file
+        return total_time_below_max
+
+
+def stream_large_array(filepath, key):
+    with open(filepath, "r") as f:
+        buffer = ""
+        depth = 0
+        inside_string = False
+        in_target_array = False
+
+        while True:
+            chunk = f.read(8192)
+            if not chunk:
+                break
+
+            for char in chunk:
+                buffer += char
+
+                if not in_target_array and f'"{key}": [' in buffer:
+                    in_target_array = True
+                    buffer = ""
+                    continue
+
+                if in_target_array:
+                    if char == '"' and (len(buffer) < 2 or buffer[-2] != '\\'):
+                        inside_string = not inside_string
+                    if not inside_string:
+                        if char == '{':
+                            depth += 1
+                        elif char == '}':
+                            depth -= 1
+                            if depth == 0:
+                                try:
+                                    obj = json.loads(buffer)
+                                    yield obj
+                                except Exception:
+                                    pass
+                                buffer = ""
+
+                    if char == ']' and depth == 0:
+                        return
\ No newline at end of file