diff --git a/package/structure_assignment/api.py b/package/structure_assignment/api.py
index 17c4ea3..5fe6381 100644
--- a/package/structure_assignment/api.py
+++ b/package/structure_assignment/api.py
@@ -10,8 +10,7 @@ import structure_assignment.pipeline as pipeline
 app = Flask(__name__)
 api_prefix = os.environ['API_PREFIX']
 resource_directory = os.environ['API_RESOURCE_DIR']
-tmp_directory = os.environ['API_TMP']
-pipeline.initialise(temp_dir=tmp_directory, resource_dir=resource_directory)
+pipeline.initialise(resource_dir=resource_directory)
 pipeline.load_classla_models()
 
 @app.route(api_prefix + '/test/<string:string>', methods=['GET'])
@@ -30,6 +29,7 @@ def test(string):
         pipeline.do_translate_jos()
         pipeline.do_conllu_to_tei()
         pipeline.export_file(parse_file_name, 'tei-initial')
+        # pipeline.cleanup()
         tei = lxml.parse(parse_file_name).getroot()
         message = lxml.tostring(tei, encoding='UTF-8', pretty_print=True).decode()
         ok = True
@@ -38,4 +38,4 @@ def test(string):
         ok = False
 
     results = {'ok':ok, 'message':message}
-    return Response(message, mimetype='text/xml')
\ No newline at end of file
+    return Response(message, mimetype='text/xml')
diff --git a/package/structure_assignment/constants.py b/package/structure_assignment/constants.py
index 4a4bd8f..247a52d 100644
--- a/package/structure_assignment/constants.py
+++ b/package/structure_assignment/constants.py
@@ -1,8 +1,5 @@
 # scripts
 TEI_SPLIT_SCRIPT_NAME = 'split_tei.py'
-CONLLU_TWEAK_SCRIPT_NAME = 'tweak_conllu.py'
-TRANSLATION_SCRIPT_NAME = 'translate_jos.py'
-CONLLU_TEI_SCRIPT_NAME = 'conllu_to_xml.py'
 MWE_EXTRACTION_SCRIPT_NAME = 'wani.py'
 STRUCTURE_SINGLE_ASSIGNMENT_SCRIPT_NAME = 'assign_single_structures.py'
 STRUCTURE_ASSIGNMENT_SCRIPT_NAME = 'assign_structures.py'
@@ -36,22 +33,3 @@ FILE_NAME_MAP = {'strings-list': 'strings.txt',
                  'dictionary-multiple': 'dictionary_multiple.xml',
                  'dictionary': 'dictionary.xml'
 }
-
-# STRING_LIST_FILE_NAME = 'strings.txt'
-# OBELIKS_RAW_FILE_NAME = 'obeliks_raw.conllu'
-# OBELIKS_TWEAKED_FILE_NAME = 'obeliks_tweaked.conllu'
-# CLASSLA_OUTPUT_FILE_NAME = 'classla_raw.conllu'
-# CLASSLA_TRANSLATED_FILE_NAME = 'classla_translated.conllu'
-# TEI_INIT_FILE_NAME = 'tei_initial.xml'
-# TEI_SINGLE_FILE_NAME = 'tei_single.xml'
-# TEI_SINGLE_STRUCTURE_FILE_NAME = 'tei_single_with_ids.xml'
-# TEI_MULTIPLE_FILE_NAME = 'tei_multiple.xml'
-# TEI_MULTIPLE_STRUCTURE_1_FILE_NAME = 'tei_multiple_with_ids1.xml'
-# TEI_MULTIPLE_STRUCTURE_2_FILE_NAME = 'tei_multiple_with_ids2.xml'
-# MWE_CSV_1_FILE_NAME = 'mwes1.csv'
-# MWE_CSV_2_FILE_NAME = 'mwes2.csv'
-# STRUCTURE_OLD_FILE_NAME = 'structures_old.xml'
-# STRUCTURE_NEW_FILE_NAME = 'structures_new.xml'
-# DICTIONARY_SINGLE_FILE_NAME = 'dictionary_single.xml'
-# DICTIONARY_MULTIPLE_FILE_NAME = 'dictionary_multiple.xml'
-# DICTIONARY_FILE_NAME = 'dictionary.xml'
diff --git a/package/structure_assignment/pipeline.py b/package/structure_assignment/pipeline.py
index 7caed7c..b111b14 100644
--- a/package/structure_assignment/pipeline.py
+++ b/package/structure_assignment/pipeline.py
@@ -1,6 +1,7 @@
 import codecs
 import shutil
 import os
+import tempfile
 
 import obeliks
 
@@ -22,19 +23,16 @@ NLP_CONFIG_MAP = {
 
 XML_ID_PREFIX = 's'
 
+tmp_directory = tempfile.mkdtemp()
 resource_directory = None
-tmp_directory = None
 nlp = None
 
 def __get_tmp_file_name(file_key):
     return tmp_directory + '/' + FILE_NAME_MAP[file_key]
 
 def initialise(**argument_map):
-    global tmp_directory, resource_directory
-    tmp_directory = argument_map['temp_dir']
+    global resource_directory
     resource_directory = argument_map['resource_dir']
-    shutil.rmtree(tmp_directory, True)
-    os.makedirs(tmp_directory, exist_ok=True)
     NLP_CONFIG_MAP['models_dir'] = resource_directory + '/classla'
 
 def import_file(file_name, file_key):
@@ -76,3 +74,6 @@ def do_conllu_to_tei():
 
 def export_file(file_name, file_key):
     shutil.copyfile(__get_tmp_file_name(file_key), file_name)
+
+def cleanup():
+    shutil.rmtree(tmp_directory, True)