diff --git a/tailbone/app.py b/tailbone/app.py
index ab96fa7f..99f3d8cc 100644
--- a/tailbone/app.py
+++ b/tailbone/app.py
@@ -89,6 +89,8 @@ def make_rattail_config(settings):
     tailbone.db.Session.configure(bind=rattail_engines['default'])
     if hasattr(rattail_config, 'tempmon_engine'):
         tailbone.db.TempmonSession.configure(bind=rattail_config.tempmon_engine)
+    if hasattr(rattail_config, 'trainwreck_engine'):
+        tailbone.db.TrainwreckSession.configure(bind=rattail_config.trainwreck_engine)
 
     # Make sure rattail config object uses our scoped session, to avoid
     # unnecessary connections (and pooling limits).
diff --git a/tailbone/db.py b/tailbone/db.py
index 27579da3..667f5ebe 100644
--- a/tailbone/db.py
+++ b/tailbone/db.py
@@ -39,6 +39,7 @@ Session = scoped_session(sessionmaker(class_=SessionBase, rattail_config=None, r
 
 # not necessarily used, but here if you need it
 TempmonSession = scoped_session(sessionmaker())
+TrainwreckSession = scoped_session(sessionmaker())
 
 
 class TailboneSessionDataManager(datamanager.SessionDataManager):
@@ -148,6 +149,8 @@ def register(session, initial_state=datamanager.STATUS_ACTIVE,
 if tuple(int(x) for x in sa.__version__.split('.')) >= (0, 7):
     register(Session)
     register(TempmonSession)
+    register(TrainwreckSession)
 else:
     Session.configure(extension=ZopeTransactionExtension())
     TempmonSession.configure(extension=ZopeTransactionExtension())
+    TrainwreckSession.configure(extension=ZopeTransactionExtension())