diff --git a/src/utils/openmc/cmfd.py b/src/utils/openmc/cmfd.py
index 443867284a..5d10ba5383 100644
--- a/src/utils/openmc/cmfd.py
+++ b/src/utils/openmc/cmfd.py
@@ -1,7 +1,9 @@
+from xml.etree import ElementTree as ET
+
+import numpy as np
+
 from openmc.checkvalue import *
 from openmc.clean_xml import *
-from xml.etree import ElementTree as ET
-import numpy as np
 
 
 class CMFDMesh(object):
diff --git a/src/utils/openmc/executor.py b/src/utils/openmc/executor.py
index abc2e9e49e..446111c3d9 100644
--- a/src/utils/openmc/executor.py
+++ b/src/utils/openmc/executor.py
@@ -1,7 +1,8 @@
-from openmc.checkvalue import *
 import subprocess
 import os
 
+from openmc.checkvalue import *
+
 
 class Executor(object):
 
diff --git a/src/utils/openmc/geometry.py b/src/utils/openmc/geometry.py
index 17d0f5fa87..db2227ba5a 100644
--- a/src/utils/openmc/geometry.py
+++ b/src/utils/openmc/geometry.py
@@ -1,6 +1,8 @@
+from xml.etree import ElementTree as ET
+
 import openmc
 from openmc.clean_xml import *
-from xml.etree import ElementTree as ET
+
 
 def reset_auto_ids():
     openmc.reset_auto_material_id()
diff --git a/src/utils/openmc/material.py b/src/utils/openmc/material.py
index 0d6e39b992..99402ef75e 100644
--- a/src/utils/openmc/material.py
+++ b/src/utils/openmc/material.py
@@ -1,12 +1,13 @@
+from collections import MappingView
+from copy import deepcopy
 import warnings
+from xml.etree import ElementTree as ET
+
+import numpy as np
 
 import openmc
 from openmc.checkvalue import *
 from openmc.clean_xml import *
-from xml.etree import ElementTree as ET
-from collections import MappingView
-from copy import deepcopy
-import numpy as np
 
 
 # A list of all IDs for all Materials created
@@ -70,14 +71,13 @@ class Material(object):
 
     def set_id(self, material_id=None):
 
-        global MATERIAL_IDS
+        global AUTO_MATERIAL_ID, MATERIAL_IDS
 
         # If the Material already has an ID, remove it from global list
         if not self._id is None:
             MATERIAL_IDS.remove(self._id)
 
         if material_id is None:
-            global AUTO_MATERIAL_ID
             self._id = AUTO_MATERIAL_ID
             MATERIAL_IDS.append(AUTO_MATERIAL_ID)
             AUTO_MATERIAL_ID += 1
@@ -260,13 +260,13 @@ class Material(object):
         string += '{0: <16}{1}{2}'.format('\tDensity', '=\t', self._density)
         string += ' [{0}]\n'.format(self._density_units)
 
-        string += '{0: <16}'.format('\tS(a,b) Tables') + '\n'
+        string += '{0: <16}\n'.format('\tS(a,b) Tables')
 
         for sab in self._sab:
             string += '{0: <16}{1}[{2}{3}]\n'.format('\tS(a,b)', '=\t',
                                                      sab[0], sab[1])
 
-        string += '{0: <16}'.format('\tNuclides') + '\n'
+        string += '{0: <16}\n'.format('\tNuclides')
 
         for nuclide in self._nuclides:
             percent = self._nuclides[nuclide][1]
diff --git a/src/utils/openmc/nuclide.py b/src/utils/openmc/nuclide.py
index e100d6d74e..5281eacd4c 100644
--- a/src/utils/openmc/nuclide.py
+++ b/src/utils/openmc/nuclide.py
@@ -36,10 +36,7 @@ class Nuclide(object):
 
 
     def __hash__(self):
-        hashable = []
-        hashable.append(self._name)
-        hashable.append(self._xs)
-        return hash(tuple(hashable))
+        return hash((self._name, self._xs))
 
 
     def set_name(self, name):
diff --git a/src/utils/openmc/opencg_compatible.py b/src/utils/openmc/opencg_compatible.py
index f80eb2c2c7..b7644aa48c 100644
--- a/src/utils/openmc/opencg_compatible.py
+++ b/src/utils/openmc/opencg_compatible.py
@@ -1,7 +1,9 @@
-import openmc
-import opencg
 import copy
+
 import numpy as np
+import opencg
+
+import openmc
 
 
 # A dictionary of all OpenMC Materials created
diff --git a/src/utils/openmc/plots.py b/src/utils/openmc/plots.py
index dbea64b09e..a69fb1abc1 100644
--- a/src/utils/openmc/plots.py
+++ b/src/utils/openmc/plots.py
@@ -1,7 +1,9 @@
+from xml.etree import ElementTree as ET
+
+import numpy as np
+
 from openmc.checkvalue import *
 from openmc.clean_xml import *
-from xml.etree import ElementTree as ET
-import numpy as np
 
 
 # A static variable for auto-generated Plot IDs
diff --git a/src/utils/openmc/settings.py b/src/utils/openmc/settings.py
index 0e314545a2..240892e420 100644
--- a/src/utils/openmc/settings.py
+++ b/src/utils/openmc/settings.py
@@ -1,10 +1,11 @@
+import collections
 import warnings
+from xml.etree import ElementTree as ET
+
+import numpy as np
 
 from openmc.checkvalue import *
 from openmc.clean_xml import *
-from xml.etree import ElementTree as ET
-import numpy as np
-import multiprocessing
 
 
 class SettingsFile(object):
@@ -152,16 +153,16 @@ class SettingsFile(object):
         self._source_file = source_file
 
 
-    def set_source_space(self, type, params):
+    def set_source_space(self, stype, params):
 
-        if not is_string(type):
+        if not is_string(stype):
             msg = 'Unable to set source space type to a non-string ' \
-                  'value {0}'.format(type)
+                  'value {0}'.format(stype)
             raise ValueError(msg)
 
-        elif not type in ['box', 'point']:
+        elif not stype in ['box', 'point']:
             msg = 'Unable to set source space type to {0} since it is not ' \
-                  'box or point'.format(type)
+                  'box or point'.format(stype)
             raise ValueError(msg)
 
         elif not isinstance(params, (tuple, list, np.ndarray)):
@@ -181,20 +182,20 @@ class SettingsFile(object):
                       'is not an integer or floating point value'.format(param)
                 raise ValueError(msg)
 
-        self._source_space_type = type
+        self._source_space_type = stype
         self._source_space_params = params
 
 
-    def set_source_angle(self, type, params=[]):
+    def set_source_angle(self, stype, params=[]):
 
-        if not is_string(type):
+        if not is_string(stype):
             msg = 'Unable to set source angle type to a non-string ' \
-                  'value {0}'.format(type)
+                  'value {0}'.format(stype)
             raise ValueError(msg)
 
-        elif not type in ['isotropic', 'monodirectional']:
+        elif not stype in ['isotropic', 'monodirectional']:
             msg = 'Unable to set source angle type to {0} since it is not ' \
-                  'isotropic or monodirectional'.format(type)
+                  'isotropic or monodirectional'.format(stype)
             raise ValueError(msg)
 
         elif not isinstance(params, (tuple, list, np.ndarray)):
@@ -202,12 +203,12 @@ class SettingsFile(object):
                   'not a Python list/tuple or NumPy array'.format(params)
             raise ValueError(msg)
 
-        elif type is 'isotropic' and not params is None:
+        elif stype == 'isotropic' and not params is None:
             msg = 'Unable to set source angle parameters since they are not ' \
                   'it is not supported for isotropic type sources'
             raise ValueError(msg)
 
-        elif type is 'monodirectional' and len(params) != 3:
+        elif stype == 'monodirectional' and len(params) != 3:
             msg = 'Unable to set source angle parameters to {0} ' \
                   'since 3 parameters are required for monodirectional ' \
                   'sources'.format(params)
@@ -220,20 +221,20 @@ class SettingsFile(object):
                       'is not an integer or floating point value'.format(param)
                 raise ValueError(msg)
 
-        self._source_angle_type = type
+        self._source_angle_type = stype
         self._source_angle_params = params
 
 
-    def set_source_energy(self, type, params=[]):
+    def set_source_energy(self, stype, params=[]):
 
-        if not is_string(type):
+        if not is_string(stype):
             msg = 'Unable to set source energy type to a non-string ' \
-                   'value {0}'.format(type)
+                   'value {0}'.format(stype)
             raise ValueError(msg)
 
-        elif not type in ['monoenergetic', 'watt', 'maxwell']:
+        elif not stype in ['monoenergetic', 'watt', 'maxwell']:
             msg = 'Unable to set source energy type to {0} since it is not ' \
-                  'monoenergetic, watt or maxwell'.format(type)
+                  'monoenergetic, watt or maxwell'.format(stype)
             raise ValueError(msg)
 
         elif not isinstance(params, (tuple, list, np.ndarray)):
@@ -241,19 +242,19 @@ class SettingsFile(object):
                   'is not a Python list/tuple or NumPy array'.format(params)
             raise ValueError(msg)
 
-        elif type is 'monoenergetic' and not len(params) != 1:
+        elif stype == 'monoenergetic' and not len(params) != 1:
             msg = 'Unable to set source energy parameters to {0} ' \
                   'since 1 paramater is required for monenergetic ' \
                   'sources'.format(params)
             raise ValueError(msg)
 
-        elif type is 'watt' and len(params) != 2:
+        elif stype == 'watt' and len(params) != 2:
             msg = 'Unable to set source energy parameters to {0} ' \
                   'since 2 parameters are required for monoenergetic ' \
                   'sources'.format(params)
             raise ValueError(msg)
 
-        elif type is 'maxwell' and len(params) != 2:
+        elif stype == 'maxwell' and len(params) != 2:
             msg = 'Unable to set source energy parameters to {0} since 1 ' \
                   'parameter is required for maxwell sources'.format(params)
             raise ValueError(msg)
@@ -266,7 +267,7 @@ class SettingsFile(object):
                       'value'.format(param)
                 raise ValueError(msg)
 
-        self._source_energy_type = type
+        self._source_energy_type = stype
         self._source_energy_params = params
 
 
@@ -806,7 +807,7 @@ class SettingsFile(object):
         warnings.warn('This feature is not yet implemented in a release ' \
                       'version of openmc')
 
-        if not type(allow) == bool:
+        if not isinstance(allow, bool):
             msg = 'Unable to set DD allow_leakage {0} which is ' \
                   'not a Python bool'.format(dimension)
             raise ValueError(msg)
@@ -820,7 +821,7 @@ class SettingsFile(object):
         warnings.warn('This feature is not yet implemented in a release ' \
                       'version of openmc')
 
-        if not type(interactions) == bool:
+        if not isinstance(interactions, bool):
             msg = 'Unable to set DD count_interactions {0} which is ' \
                   'not a Python bool'.format(dimension)
             raise ValueError(msg)
diff --git a/src/utils/openmc/statepoint.py b/src/utils/openmc/statepoint.py
index 4ded8d1b65..eadfcc4c1f 100644
--- a/src/utils/openmc/statepoint.py
+++ b/src/utils/openmc/statepoint.py
@@ -1,11 +1,13 @@
-import struct, copy
+import copy
+import struct
+
 import numpy as np
 import scipy.stats
+
 import openmc
 from openmc.constants import *
 
 
-
 class SourceSite(object):
 
     def __init__(self):
diff --git a/src/utils/openmc/summary.py b/src/utils/openmc/summary.py
index fe179a971e..caddc99a98 100644
--- a/src/utils/openmc/summary.py
+++ b/src/utils/openmc/summary.py
@@ -1,6 +1,7 @@
+import numpy as np
+
 import openmc
 from openmc.opencg_compatible import get_opencg_geometry
-import numpy as np
 
 try:
     import h5py
diff --git a/src/utils/openmc/surface.py b/src/utils/openmc/surface.py
index 9e4660eced..2ed28e3835 100644
--- a/src/utils/openmc/surface.py
+++ b/src/utils/openmc/surface.py
@@ -1,6 +1,7 @@
+from xml.etree import ElementTree as ET
+
 from openmc.checkvalue import *
 from openmc.constants import BC_TYPES
-from xml.etree import ElementTree as ET
 
 
 # A static variable for auto-generated Surface IDs
diff --git a/src/utils/openmc/tallies.py b/src/utils/openmc/tallies.py
index 4250aa4635..9d9f8acaf2 100644
--- a/src/utils/openmc/tallies.py
+++ b/src/utils/openmc/tallies.py
@@ -1,10 +1,12 @@
+from xml.etree import ElementTree as ET
+import os, copy
+
+import numpy as np
+
 from openmc import Nuclide
 from openmc.clean_xml import *
 from openmc.checkvalue import *
 from openmc.constants import *
-from xml.etree import ElementTree as ET
-import numpy as np
-import os, copy
 
 
 # "Static" variables for auto-generated Tally and Mesh IDs
diff --git a/src/utils/openmc/universe.py b/src/utils/openmc/universe.py
index 676c94587f..5bb9c29304 100644
--- a/src/utils/openmc/universe.py
+++ b/src/utils/openmc/universe.py
@@ -1,9 +1,11 @@
+import abc
+from collections import OrderedDict
+from xml.etree import ElementTree as ET
+
+import numpy as np
+
 import openmc
 from openmc.checkvalue import *
-from xml.etree import ElementTree as ET
-from collections import OrderedDict
-import numpy as np
-import abc
 
 
 ################################################################################