diff --git a/src/specificClass.js b/src/specificClass.js
index 43c27fc..50fedc8 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -101,11 +101,11 @@ class Reactor {
     switch (softwareType) {
       case "measurement":
         this.logger.debug(`Registering measurement child.`);
-        this.connectMeasurement(child);
+        this._connectMeasurement(child);
         break;
       case "reactor":
         this.logger.debug(`Registering reactor child.`);
-        this.connectReactor(child);
+        this._connectReactor(child);
         break;
 
       default:
@@ -113,7 +113,7 @@ class Reactor {
     }
   }
 
-  connectMeasurement(measurement) {
+  _connectMeasurement(measurement) {
     if (!measurement) {
       this.logger.warn("Invalid measurement provided.");
       return;
@@ -140,7 +140,7 @@ class Reactor {
   }
 
 
-  connectReactor(reactor) {
+  _connectReactor(reactor) {
     if (!reactor) {
       this.logger.warn("Invalid reactor provided.");
       return;
@@ -318,7 +318,7 @@ class Reactor_PFR extends Reactor {
       case "oxygen":
         grid_pos = Math.round(position * this.n_x);
         this.state[grid_pos][S_O_INDEX] = value; // naive approach for reconciling measurements and simulation
-        return;
+        break;
     }
     super._updateMeasurement(measurementType, value, position, context);
   }