From 0ee2c87a32236266c128d5448f6667cea947f0d6 Mon Sep 17 00:00:00 2001
From: Frode Helgetun Krogh <70878501+frodehk@users.noreply.github.com>
Date: Tue, 3 Feb 2026 13:57:29 +0100
Subject: [PATCH 1/6] refactor: add yaml process system top level

---
 .../yaml/yaml_types/components/yaml_asset.py     | 16 ++++++++++++++++
 .../yaml_types/components/yaml_installation.py   |  6 ++++++
 2 files changed, 22 insertions(+)

diff --git a/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py b/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
index 17ad730365..5f9dba1629 100644
--- a/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
+++ b/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
@@ -4,6 +4,11 @@
 from libecalc.common.string.string_utils import get_duplicates
 from libecalc.presentation.yaml.yaml_types import YamlBase
 from libecalc.presentation.yaml.yaml_types.components.yaml_installation import YamlInstallation
+from libecalc.presentation.yaml.yaml_types.components.yaml_process_system import (
+    YamlCompressorStageProcessSystem,
+    YamlParallelProcessSystem,
+    YamlSerialProcessSystem,
+)
 from libecalc.presentation.yaml.yaml_types.facility_model.yaml_facility_model import YamlFacilityModel
 from libecalc.presentation.yaml.yaml_types.fuel_type.yaml_fuel_type import YamlFuelType
 from libecalc.presentation.yaml.yaml_types.models import YamlConsumerModel, YamlFluidModel
@@ -61,6 +66,9 @@ class YamlAsset(YamlBase):
         description="Defines variables used in an energy usage model by means of expressions or constants."
         "\n\n$ECALC_DOCS_KEYWORDS_URL/VARIABLES",
     )
+    process_systems: YamlParallelProcessSystem | YamlSerialProcessSystem | YamlCompressorStageProcessSystem | None = (
+        Field(None, title="PROCESS_SYSTEMS", description="Defines process systems to use in process simulations.")
+    )
     installations: list[YamlInstallation] = Field(
         ...,
         title="INSTALLATIONS",
@@ -104,6 +112,10 @@ def validate_unique_component_names(self, info: ValidationInfo):
             for venting_emitter in installation.venting_emitters or []:
                 names.append(venting_emitter.name)
 
+            if installation.process_simulations is not None:
+                for process_simulation in installation.process_simulations:
+                    names.append(process_simulation.name)
+
         duplicated_names = get_duplicates(names)
 
         if len(duplicated_names) > 0:
@@ -147,6 +159,10 @@ def validate_unique_references(self):
             for fuel_type in self.fuel_types:
                 references.append(fuel_type.name)
 
+        if self.process_systems is not None:
+            for process_system in self.process_systems:
+                references.append(process_system.name)
+
         if self.fluid_models is not None:
             references.extend(self.fluid_models.keys())
 
diff --git a/src/libecalc/presentation/yaml/yaml_types/components/yaml_installation.py b/src/libecalc/presentation/yaml/yaml_types/components/yaml_installation.py
index fd20b2f06c..e88187575b 100644
--- a/src/libecalc/presentation/yaml/yaml_types/components/yaml_installation.py
+++ b/src/libecalc/presentation/yaml/yaml_types/components/yaml_installation.py
@@ -17,6 +17,7 @@
 from libecalc.presentation.yaml.yaml_types.components.yaml_generator_set import (
     YamlGeneratorSet,
 )
+from libecalc.presentation.yaml.yaml_types.components.yaml_process_system import YamlProcessSimulation
 from libecalc.presentation.yaml.yaml_types.emitters.yaml_venting_emitter import (
     YamlVentingEmitter,
 )
@@ -74,6 +75,11 @@ class YamlInstallation(YamlBase):
         title="VENTING_EMITTERS",
         description="Covers the direct emissions on the installation that are not consuming energy",
     )
+    process_simulations: list[YamlProcessSimulation] | None = Field(
+        None,
+        title="PROCESS_SIMULATIONS",
+        description="Defines one or more process simulations to be run for the installation.",
+    )
 
     @model_validator(mode="after")
     def check_some_consumer_or_emitter(self):

From 2542fbe8eca993b29893e5e11602fb47a5cca732 Mon Sep 17 00:00:00 2001
From: Frode Helgetun Krogh <70878501+frodehk@users.noreply.github.com>
Date: Wed, 4 Feb 2026 10:02:35 +0100
Subject: [PATCH 2/6] refactor: update yaml model

---
 .../presentation/yaml/yaml_keywords.py        |  3 +++
 .../yaml/yaml_models/pyyaml_yaml_model.py     | 26 +++++++++++++++++++
 .../yaml/yaml_types/components/yaml_asset.py  | 23 +++++++++-------
 .../components/yaml_process_system.py         | 11 ++++++++
 4 files changed, 54 insertions(+), 9 deletions(-)

diff --git a/src/libecalc/presentation/yaml/yaml_keywords.py b/src/libecalc/presentation/yaml/yaml_keywords.py
index 1981acb1b6..f39ff44757 100644
--- a/src/libecalc/presentation/yaml/yaml_keywords.py
+++ b/src/libecalc/presentation/yaml/yaml_keywords.py
@@ -188,6 +188,9 @@ class EcalcYamlKeywords:
     time_series_extrapolate_outside_defined = "EXTRAPOLATION"
     time_series_interpolation_type = "INTERPOLATION_TYPE"
 
+    process_systems = "PROCESS_SYSTEMS"
+    process_units = "PROCESS_UNITS"
+
     start = "START"
     end = "END"
     date = "DATE"
diff --git a/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py b/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
index 749a9794d9..604cb5080d 100644
--- a/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
+++ b/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
@@ -28,6 +28,7 @@
 from libecalc.presentation.yaml.yaml_node import YamlDict, YamlList
 from libecalc.presentation.yaml.yaml_types.components.yaml_asset import YamlAsset
 from libecalc.presentation.yaml.yaml_types.components.yaml_installation import YamlInstallation
+from libecalc.presentation.yaml.yaml_types.components.yaml_process_system import YamlProcessSystem, YamlProcessUnit
 from libecalc.presentation.yaml.yaml_types.facility_model.yaml_facility_model import YamlFacilityModel
 from libecalc.presentation.yaml.yaml_types.fuel_type.yaml_fuel_type import YamlFuelType
 from libecalc.presentation.yaml.yaml_types.models import YamlConsumerModel
@@ -397,6 +398,31 @@ def installations(self) -> Iterable[YamlInstallation]:
                 pass
         return installations
 
+    @property
+    def process_units(self) -> dict[str, YamlProcessUnit]:
+        process_units: dict[str, YamlProcessUnit] = {}
+        raw = self._get_yaml_dict_or_empty(EcalcYamlKeywords.process_units)
+
+        for name, unit_data in raw.items():
+            try:
+                process_units[name] = TypeAdapter(YamlProcessUnit).validate_python(unit_data)
+            except PydanticValidationError:
+                pass
+        return process_units
+
+    @property
+    def process_systems(self) -> dict[str, YamlProcessSystem]:
+        process_systems: dict[str, YamlProcessSystem] = {}
+        raw = self._get_yaml_dict_or_empty(EcalcYamlKeywords.process_systems)
+
+        for name, system_data in raw.items():
+            try:
+                process_systems[name] = TypeAdapter(YamlProcessSystem).validate_python(system_data)
+            except PydanticValidationError:
+                pass
+
+        return process_systems
+
     @property
     def start(self) -> datetime.datetime | None:
         start_value = self._internal_datamodel.get(EcalcYamlKeywords.start)
diff --git a/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py b/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
index 5f9dba1629..1ab6a1e179 100644
--- a/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
+++ b/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
@@ -5,9 +5,8 @@
 from libecalc.presentation.yaml.yaml_types import YamlBase
 from libecalc.presentation.yaml.yaml_types.components.yaml_installation import YamlInstallation
 from libecalc.presentation.yaml.yaml_types.components.yaml_process_system import (
-    YamlCompressorStageProcessSystem,
-    YamlParallelProcessSystem,
-    YamlSerialProcessSystem,
+    YamlProcessSystem,
+    YamlProcessUnit,
 )
 from libecalc.presentation.yaml.yaml_types.facility_model.yaml_facility_model import YamlFacilityModel
 from libecalc.presentation.yaml.yaml_types.fuel_type.yaml_fuel_type import YamlFuelType
@@ -66,8 +65,15 @@ class YamlAsset(YamlBase):
         description="Defines variables used in an energy usage model by means of expressions or constants."
         "\n\n$ECALC_DOCS_KEYWORDS_URL/VARIABLES",
     )
-    process_systems: YamlParallelProcessSystem | YamlSerialProcessSystem | YamlCompressorStageProcessSystem | None = (
-        Field(None, title="PROCESS_SYSTEMS", description="Defines process systems to use in process simulations.")
+    process_units: dict[str, YamlProcessUnit] = Field(
+        default_factory=dict,
+        title="PROCESS_UNITS",
+        description="Defines process units used in PROCESS_SYSTEMS.",
+    )
+    process_systems: dict[str, YamlProcessSystem] = Field(
+        default_factory=dict,
+        title="PROCESS_SYSTEMS",
+        description="Defines process systems to use in process simulations.",
     )
     installations: list[YamlInstallation] = Field(
         ...,
@@ -113,8 +119,8 @@ def validate_unique_component_names(self, info: ValidationInfo):
                 names.append(venting_emitter.name)
 
             if installation.process_simulations is not None:
-                for process_simulation in installation.process_simulations:
-                    names.append(process_simulation.name)
+                if installation.process_simulations is not None:
+                    names.extend(installation.process_simulations.keys())
 
         duplicated_names = get_duplicates(names)
 
@@ -160,8 +166,7 @@ def validate_unique_references(self):
                 references.append(fuel_type.name)
 
         if self.process_systems is not None:
-            for process_system in self.process_systems:
-                references.append(process_system.name)
+            references.extend(self.process_systems.keys())
 
         if self.fluid_models is not None:
             references.extend(self.fluid_models.keys())
diff --git a/src/libecalc/presentation/yaml/yaml_types/components/yaml_process_system.py b/src/libecalc/presentation/yaml/yaml_types/components/yaml_process_system.py
index 268e7f3c62..10b7a86268 100644
--- a/src/libecalc/presentation/yaml/yaml_types/components/yaml_process_system.py
+++ b/src/libecalc/presentation/yaml/yaml_types/components/yaml_process_system.py
@@ -119,3 +119,14 @@ class YamlProcessSimulation(YamlBase):
     name: str
     target: YamlParallelProcessSystem | YamlSerialProcessSystem | ProcessSystemReference
     stream_distribution: YamlStreamDistribution
+
+
+YamlProcessUnit = Annotated[
+    YamlCompressor,
+    Field(discriminator="type"),
+]
+
+YamlProcessSystem = Annotated[
+    YamlParallelProcessSystem | YamlSerialProcessSystem | YamlCompressorStageProcessSystem,
+    Field(discriminator="type"),
+]

From f691dd9d99a5e092caf0613a6014466aff0c1d11 Mon Sep 17 00:00:00 2001
From: Frode Helgetun Krogh <70878501+frodehk@users.noreply.github.com>
Date: Wed, 4 Feb 2026 10:38:28 +0100
Subject: [PATCH 3/6] refactor: process simulations to separate section

---
 .../yaml/yaml_types/components/yaml_asset.py    | 17 +++++++++++++----
 .../yaml_types/components/yaml_installation.py  |  6 ------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py b/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
index 1ab6a1e179..bb8dd68701 100644
--- a/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
+++ b/src/libecalc/presentation/yaml/yaml_types/components/yaml_asset.py
@@ -5,6 +5,7 @@
 from libecalc.presentation.yaml.yaml_types import YamlBase
 from libecalc.presentation.yaml.yaml_types.components.yaml_installation import YamlInstallation
 from libecalc.presentation.yaml.yaml_types.components.yaml_process_system import (
+    YamlProcessSimulation,
     YamlProcessSystem,
     YamlProcessUnit,
 )
@@ -75,6 +76,11 @@ class YamlAsset(YamlBase):
         title="PROCESS_SYSTEMS",
         description="Defines process systems to use in process simulations.",
     )
+    process_simulations: list[YamlProcessSimulation] = Field(
+        default_factory=list,
+        title="PROCESS_SIMULATIONS",
+        description="Defines one or more process simulations to be run.",
+    )
     installations: list[YamlInstallation] = Field(
         ...,
         title="INSTALLATIONS",
@@ -118,10 +124,6 @@ def validate_unique_component_names(self, info: ValidationInfo):
             for venting_emitter in installation.venting_emitters or []:
                 names.append(venting_emitter.name)
 
-            if installation.process_simulations is not None:
-                if installation.process_simulations is not None:
-                    names.extend(installation.process_simulations.keys())
-
         duplicated_names = get_duplicates(names)
 
         if len(duplicated_names) > 0:
@@ -168,6 +170,13 @@ def validate_unique_references(self):
         if self.process_systems is not None:
             references.extend(self.process_systems.keys())
 
+        if self.process_units is not None:
+            references.extend(self.process_units.keys())
+
+        if self.process_simulations is not None:
+            for process_simulation in self.process_simulations:
+                references.append(process_simulation.name)
+
         if self.fluid_models is not None:
             references.extend(self.fluid_models.keys())
 
diff --git a/src/libecalc/presentation/yaml/yaml_types/components/yaml_installation.py b/src/libecalc/presentation/yaml/yaml_types/components/yaml_installation.py
index e88187575b..fd20b2f06c 100644
--- a/src/libecalc/presentation/yaml/yaml_types/components/yaml_installation.py
+++ b/src/libecalc/presentation/yaml/yaml_types/components/yaml_installation.py
@@ -17,7 +17,6 @@
 from libecalc.presentation.yaml.yaml_types.components.yaml_generator_set import (
     YamlGeneratorSet,
 )
-from libecalc.presentation.yaml.yaml_types.components.yaml_process_system import YamlProcessSimulation
 from libecalc.presentation.yaml.yaml_types.emitters.yaml_venting_emitter import (
     YamlVentingEmitter,
 )
@@ -75,11 +74,6 @@ class YamlInstallation(YamlBase):
         title="VENTING_EMITTERS",
         description="Covers the direct emissions on the installation that are not consuming energy",
     )
-    process_simulations: list[YamlProcessSimulation] | None = Field(
-        None,
-        title="PROCESS_SIMULATIONS",
-        description="Defines one or more process simulations to be run for the installation.",
-    )
 
     @model_validator(mode="after")
     def check_some_consumer_or_emitter(self):

From 7a3ee378f8700a8091a67778ffe7f9a876ee1c97 Mon Sep 17 00:00:00 2001
From: Frode Helgetun Krogh <70878501+frodehk@users.noreply.github.com>
Date: Wed, 4 Feb 2026 13:18:31 +0100
Subject: [PATCH 4/6] refactor: remove yaml process yaml keywords

---
 .../presentation/yaml/yaml_keywords.py        |  3 -
 .../yaml/yaml_models/pyyaml_yaml_model.py     | 58 +++++++++++++++++--
 2 files changed, 52 insertions(+), 9 deletions(-)

diff --git a/src/libecalc/presentation/yaml/yaml_keywords.py b/src/libecalc/presentation/yaml/yaml_keywords.py
index f39ff44757..1981acb1b6 100644
--- a/src/libecalc/presentation/yaml/yaml_keywords.py
+++ b/src/libecalc/presentation/yaml/yaml_keywords.py
@@ -188,9 +188,6 @@ class EcalcYamlKeywords:
     time_series_extrapolate_outside_defined = "EXTRAPOLATION"
     time_series_interpolation_type = "INTERPOLATION_TYPE"
 
-    process_systems = "PROCESS_SYSTEMS"
-    process_units = "PROCESS_UNITS"
-
     start = "START"
     end = "END"
     date = "DATE"
diff --git a/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py b/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
index 604cb5080d..b4f3d0bff2 100644
--- a/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
+++ b/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
@@ -28,15 +28,27 @@
 from libecalc.presentation.yaml.yaml_node import YamlDict, YamlList
 from libecalc.presentation.yaml.yaml_types.components.yaml_asset import YamlAsset
 from libecalc.presentation.yaml.yaml_types.components.yaml_installation import YamlInstallation
-from libecalc.presentation.yaml.yaml_types.components.yaml_process_system import YamlProcessSystem, YamlProcessUnit
+from libecalc.presentation.yaml.yaml_types.components.yaml_process_system import (
+    YamlProcessSimulation,
+    YamlProcessSystem,
+    YamlProcessUnit,
+)
 from libecalc.presentation.yaml.yaml_types.facility_model.yaml_facility_model import YamlFacilityModel
 from libecalc.presentation.yaml.yaml_types.fuel_type.yaml_fuel_type import YamlFuelType
-from libecalc.presentation.yaml.yaml_types.models import YamlConsumerModel
+from libecalc.presentation.yaml.yaml_types.models import YamlConsumerModel, YamlFluidModel
+from libecalc.presentation.yaml.yaml_types.streams.yaml_inlet_stream import YamlInletStream
 from libecalc.presentation.yaml.yaml_types.time_series.yaml_time_series import YamlTimeSeriesCollection
 from libecalc.presentation.yaml.yaml_types.yaml_default_datetime import YamlDefaultDatetime
 from libecalc.presentation.yaml.yaml_types.yaml_variable import YamlVariable, YamlVariableReferenceId, YamlVariables
 from libecalc.presentation.yaml.yaml_validation_context import YamlModelValidationContext
 
+# Top-level YAML keywords used only by experimental/new sections
+_PROCESS_UNITS_KEY = "PROCESS_UNITS"
+_PROCESS_SYSTEMS_KEY = "PROCESS_SYSTEMS"
+_INLET_STREAMS_KEY = "INLET_STREAMS"
+_FLUID_MODELS_KEY = "FLUID_MODELS"
+_PROCESS_SIMULATIONS_KEY = "PROCESS_SIMULATIONS"
+
 dt_adapter = TypeAdapter(datetime.datetime)
 
 
@@ -398,10 +410,34 @@ def installations(self) -> Iterable[YamlInstallation]:
                 pass
         return installations
 
+    @property
+    def inlet_streams(self) -> dict[str, YamlInletStream]:
+        inlet_streams: dict[str, YamlInletStream] = {}
+        raw = self._get_yaml_dict_or_empty(_INLET_STREAMS_KEY)
+
+        for name, stream in raw.items():
+            try:
+                inlet_streams[name] = TypeAdapter(YamlInletStream).validate_python(stream)
+            except PydanticValidationError:
+                pass
+        return inlet_streams
+
+    @property
+    def fluid_models(self) -> dict[str, YamlFluidModel]:
+        fluid_models: dict[str, YamlFluidModel] = {}
+        raw = self._get_yaml_dict_or_empty(_FLUID_MODELS_KEY)
+
+        for name, fluid_model in raw.items():
+            try:
+                fluid_models[name] = TypeAdapter(YamlFluidModel).validate_python(fluid_model)
+            except PydanticValidationError:
+                pass
+        return fluid_models
+
     @property
     def process_units(self) -> dict[str, YamlProcessUnit]:
         process_units: dict[str, YamlProcessUnit] = {}
-        raw = self._get_yaml_dict_or_empty(EcalcYamlKeywords.process_units)
+        raw = self._get_yaml_dict_or_empty(_PROCESS_UNITS_KEY)
 
         for name, unit_data in raw.items():
             try:
@@ -413,16 +449,26 @@ def process_units(self) -> dict[str, YamlProcessUnit]:
     @property
     def process_systems(self) -> dict[str, YamlProcessSystem]:
         process_systems: dict[str, YamlProcessSystem] = {}
-        raw = self._get_yaml_dict_or_empty(EcalcYamlKeywords.process_systems)
+        raw = self._get_yaml_dict_or_empty(_PROCESS_SYSTEMS_KEY)
 
-        for name, system_data in raw.items():
+        for name, process_system in raw.items():
             try:
-                process_systems[name] = TypeAdapter(YamlProcessSystem).validate_python(system_data)
+                process_systems[name] = TypeAdapter(YamlProcessSystem).validate_python(process_system)
             except PydanticValidationError:
                 pass
 
         return process_systems
 
+    @property
+    def process_simulations(self) -> list[YamlProcessSimulation]:
+        process_simulations: list[YamlProcessSimulation] = []
+        for process_simulation in self._get_yaml_list_or_empty(_PROCESS_SIMULATIONS_KEY):
+            try:
+                process_simulations.append(TypeAdapter(YamlProcessSimulation).validate_python(process_simulation))
+            except PydanticValidationError:
+                pass
+        return process_simulations
+
     @property
     def start(self) -> datetime.datetime | None:
         start_value = self._internal_datamodel.get(EcalcYamlKeywords.start)

From 4d7adcf7fb9b753be77e78eeb11e0b77a1a8660f Mon Sep 17 00:00:00 2001
From: Frode Helgetun Krogh <70878501+frodehk@users.noreply.github.com>
Date: Wed, 4 Feb 2026 13:20:58 +0100
Subject: [PATCH 5/6] chore: type adapter

---
 .../presentation/yaml/yaml_models/pyyaml_yaml_model.py        | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py b/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
index b4f3d0bff2..8c3d6dc096 100644
--- a/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
+++ b/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
@@ -414,10 +414,10 @@ def installations(self) -> Iterable[YamlInstallation]:
     def inlet_streams(self) -> dict[str, YamlInletStream]:
         inlet_streams: dict[str, YamlInletStream] = {}
         raw = self._get_yaml_dict_or_empty(_INLET_STREAMS_KEY)
-
+        adapter = TypeAdapter(YamlInletStream)
         for name, stream in raw.items():
             try:
-                inlet_streams[name] = TypeAdapter(YamlInletStream).validate_python(stream)
+                inlet_streams[name] = adapter.validate_python(stream)
             except PydanticValidationError:
                 pass
         return inlet_streams

From a107376d3474824486cf1344e88030406a6a72df Mon Sep 17 00:00:00 2001
From: Frode Helgetun Krogh <70878501+frodehk@users.noreply.github.com>
Date: Wed, 4 Feb 2026 13:23:23 +0100
Subject: [PATCH 6/6] chore: type adapter

---
 .../presentation/yaml/yaml_models/pyyaml_yaml_model.py        | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py b/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
index 8c3d6dc096..c2ba675fed 100644
--- a/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
+++ b/src/libecalc/presentation/yaml/yaml_models/pyyaml_yaml_model.py
@@ -415,6 +415,7 @@ def inlet_streams(self) -> dict[str, YamlInletStream]:
         inlet_streams: dict[str, YamlInletStream] = {}
         raw = self._get_yaml_dict_or_empty(_INLET_STREAMS_KEY)
         adapter = TypeAdapter(YamlInletStream)
+
         for name, stream in raw.items():
             try:
                 inlet_streams[name] = adapter.validate_python(stream)
@@ -462,9 +463,10 @@ def process_systems(self) -> dict[str, YamlProcessSystem]:
     @property
     def process_simulations(self) -> list[YamlProcessSimulation]:
         process_simulations: list[YamlProcessSimulation] = []
+        adapter = TypeAdapter(YamlProcessSimulation)
         for process_simulation in self._get_yaml_list_or_empty(_PROCESS_SIMULATIONS_KEY):
             try:
-                process_simulations.append(TypeAdapter(YamlProcessSimulation).validate_python(process_simulation))
+                process_simulations.append(adapter.validate_python(process_simulation))
             except PydanticValidationError:
                 pass
         return process_simulations