diff --git a/Trigger/TrigConfiguration/TrigConfigSvc/src/ConfigSvcBase.cxx b/Trigger/TrigConfiguration/TrigConfigSvc/src/ConfigSvcBase.cxx
index c572425756c040f7426303f5a445517a27299ff8..964563b2b71e9b69076ae09ab511a4c10f5518a5 100644
--- a/Trigger/TrigConfiguration/TrigConfigSvc/src/ConfigSvcBase.cxx
+++ b/Trigger/TrigConfiguration/TrigConfigSvc/src/ConfigSvcBase.cxx
@@ -27,7 +27,7 @@ ConfigSvcBase::~ConfigSvcBase()
 void
 ConfigSvcBase::declareCommonProperties() {
    declareProperty( "ConfigSource",     m_configSourceString,
-                    "Source of trigger configuration; can be \"XML\", \"MySQL\", \"Oracle\", or \"DBLookup\" ");
+                    "Source of trigger configuration; can be \"XML\", \"MySQL\", \"Oracle\", \"DBLookup\" or \"RUN3_DUMMY\" ");
    declareProperty( "XMLMenuFile",      m_xmlFile,
                     "XML file containing the trigger configuration.");
    declareProperty( "DBServer",         m_dbServer,
@@ -59,7 +59,10 @@ ConfigSvcBase::initialize() {
    ATH_MSG_INFO("=================================");
 
    string s(boost::to_lower_copy(m_configSourceString)); // lower case
-   if(s != "xml") {
+
+  if (s == "run3_dummy") {
+      ATH_MSG_WARNING("Configured to use Run-3 Dummy menu. This should never be seen in production");
+   } else if(s != "xml") {
       TrigDBConnectionConfig::DBType dbtype(TrigDBConnectionConfig::DBLookup);
       if (s == "oracle") { dbtype = TrigDBConnectionConfig::Oracle; }
       else if (s == "mysql")  { dbtype = TrigDBConnectionConfig::MySQL; }
diff --git a/Trigger/TrigConfiguration/TrigConfigSvc/src/HLTConfigSvc.cxx b/Trigger/TrigConfiguration/TrigConfigSvc/src/HLTConfigSvc.cxx
index c49c176827df57fcd9909c1fd798496de795d0b3..c0d1df055e33ba265b69eaa2ef76988bdbfa0330 100644
--- a/Trigger/TrigConfiguration/TrigConfigSvc/src/HLTConfigSvc.cxx
+++ b/Trigger/TrigConfiguration/TrigConfigSvc/src/HLTConfigSvc.cxx
@@ -117,7 +117,42 @@ HLTConfigSvc::initialize() {
 
    CHECK(ConfigSvcBase::initialize());
 
-   if( !fromDB() and m_xmlFile=="NONE" ) {
+   //////////////////////////////////////////////////////////////
+   // BEGIN RUN-3 TESTING BLOCK - THIS SHOULD BE TEMPORARY
+   ////////////////////////////////////////////////////////////// 
+   string s(boost::to_lower_copy(m_configSourceString)); // lower case
+   if (s == "run3_dummy") {
+
+      std::map<std::string, std::string> dummyChains;
+      dummyChains["HLT_e3_etcut1step"] = "L1_EM3";
+      dummyChains["HLT_e3_etcut"] = "L1_EM3";
+      dummyChains["HLT_e5_etcut"] = "L1_EM3";
+      dummyChains["HLT_e7_etcut"] = "L1_EM3";
+      dummyChains["HLT_g5_etcut"] = "L1_EM3";
+      dummyChains["HLT_mu6"] = "L1_MU6";
+      dummyChains["HLT_2mu6"] = "L1_MU6";
+      dummyChains["HLT_mu6Comb"] = "L1_MU6";
+      dummyChains["HLT_2mu6Comb"] = "L1_MU6";
+      dummyChains["HLT_j85"] = "L1_J20";
+      dummyChains["HLT_j100"] = "L1_J20";
+      dummyChains["HLT_e3_etcut_mu6"] = "L1_EM8I_MU10";
+      m_HLTFrame.setMergedHLT( m_setMergedHLT );
+      for (const auto& mapPair : dummyChains) {
+         const std::string& chainName = mapPair.first;
+         const std::string& chainSeed = mapPair.second;
+         const int chainCounter = std::distance(dummyChains.begin(), dummyChains.find(chainName));
+         HLTChain* chain = new HLTChain( chainName, chainCounter, 1, "HLT", chainSeed, 0, vector<HLTSignature*>() );
+         // Note: the ownership of chain is transfered to the frame, the frame will delete it on deconstruct.
+         m_HLTFrame.theHLTChainList().addHLTChain( chain );
+         ATH_MSG_INFO(" RUN 3 TESTING MODE! Adding dummy chain " << chainName << " [" << chainCounter << "] <- " << chainSeed);
+      }
+
+      return StatusCode::SUCCESS;
+
+   //////////////////////////////////////////////////////////////
+   // END RUN-3 TESTING BLOCK - THIS SHOULD BE TEMPORARY
+   //////////////////////////////////////////////////////////////
+   } else if( !fromDB() and m_xmlFile=="NONE" ) {
       ATH_MSG_INFO("xml file set to NONE, will not load HLT Menu");
       return StatusCode::SUCCESS;
    }