diff --git a/spec/requests/inspections/inspections_spec.rb b/spec/requests/inspections/inspections_spec.rb
index 0f3f52ef..a37466cc 100644
--- a/spec/requests/inspections/inspections_spec.rb
+++ b/spec/requests/inspections/inspections_spec.rb
@@ -116,6 +116,19 @@ def mock_failing_update(error_messages = ["Update error"])
     end
   end
 
+  describe "assessments disabled" do
+    before do
+      allow(ENV).to receive(:[]).and_call_original
+      allow(ENV).to receive(:[]).with("HAS_ASSESSMENTS").and_return("false")
+      login_as(user)
+    end
+
+    it "returns 404 when assessments are disabled" do
+      get "/inspections"
+      expect(response).to have_http_status(:not_found)
+    end
+  end
+
   describe "when logged in" do
     before { login_as(user) }
 
@@ -166,6 +179,22 @@ def mock_failing_update(error_messages = ["Update error"])
         # Verify that the Rails path helper generates the expected URL
         expect(inspection_path(inspection, format: :pdf)).to eq("/inspections/#{inspection.id}.pdf")
       end
+
+      context "JSON format" do
+        it "returns inspection data as JSON using InspectionBlueprint" do
+          # Don't mock - let InspectionBlueprint actually render
+          get "/inspections/#{inspection.id}.json"
+
+          expect(response).to have_http_status(:success)
+          expect(response.content_type).to include("application/json")
+
+          json = JSON.parse(response.body)
+          # id is excluded from public API, check other fields
+          expect(json["inspection_date"]).to be_present
+          expect(json["complete"]).to be false
+          expect(json["passed"]).to eq(inspection.passed)
+        end
+      end
     end
 
     describe "POST /create" do
@@ -273,6 +302,29 @@ def mock_failing_update(error_messages = ["Update error"])
         expect(flash[:alert]).to match(/invalid.*unit/i)
       end
 
+      context "with image processing error" do
+        before do
+          # Simulate image processing error by stubbing process_image_params
+          allow_any_instance_of(InspectionsController).to receive(:process_image_params) do |controller, params, *args|
+            controller.instance_variable_set(:@image_processing_error, StandardError.new("Image processing failed"))
+            params
+          end
+        end
+
+        it "handles image processing errors gracefully" do
+          patch "/inspections/#{inspection.id}", params: {
+            inspection: {
+              risk_assessment: "Test assessment",
+              photo_1: fixture_file_upload("spec/fixtures/files/test_image.jpg", "image/jpeg")
+            }
+          }
+
+          expect(response).to have_http_status(:unprocessable_content)
+          expect(flash[:alert]).to eq("Image processing failed")
+          expect(response).to render_template(:edit)
+        end
+      end
+
       %w[json turbo_stream].each do |format|
         context "#{format} format" do
           let(:headers) do
@@ -361,12 +413,18 @@ def mock_failing_update(error_messages = ["Update error"])
 
           inspection.reload
           expect(inspection.unit).to eq(unit1)
+          
+          # Verify event logging
+          event = Event.for_resource(inspection).last
+          expect(event.action).to eq("unit_changed")
+          expect(event.details).to include(unit1.name)
         end
 
         it "handles invalid unit_id" do
           patch "/inspections/#{inspection.id}/update_unit", params: {unit_id: "invalid"}
           expect_redirect_with_alert(select_unit_inspection_path(inspection), /invalid.*unit/i)
         end
+
       end
     end
 
@@ -434,6 +492,240 @@ def mock_failing_update(error_messages = ["Update error"])
         expect(response).to have_http_status(:success)
       end
     end
+
+    describe "HEAD requests" do
+      let(:inspection) { create(:inspection, user: user, unit: unit) }
+      
+      it "returns 200 OK for HEAD request" do
+        head "/inspections/#{inspection.id}"
+        expect(response).to have_http_status(:ok)
+        expect(response.body).to be_empty
+      end
+    end
+
+    describe "GET /log" do
+      let(:inspection) { create(:inspection, user: user, unit: unit) }
+      
+      before do
+        # Create some events for the inspection
+        Event.log(
+          user: user,
+          action: "created",
+          resource: inspection,
+          details: "Inspection created"
+        )
+        Event.log(
+          user: user,
+          action: "updated",
+          resource: inspection,
+          details: "Inspection updated"
+        )
+      end
+
+      it "displays inspection event log" do
+        get "/inspections/#{inspection.id}/log"
+
+        expect(response).to have_http_status(:success)
+        expect(assigns(:events)).to be_present
+        expect(assigns(:events).count).to eq(2)
+        expect(assigns(:title)).to include(inspection.id)
+      end
+    end
+
+
+    describe "prefill functionality" do
+      let(:previous_inspection) do
+        create(:inspection, :completed,
+          user: user,
+          unit: unit,
+          risk_assessment: "Previous risk")
+      end
+
+      let(:new_inspection) do
+        create(:inspection, user: user, unit: unit)
+      end
+
+      before do
+        # Set up previous inspection on unit
+        allow_any_instance_of(Unit).to receive(:last_inspection).and_return(previous_inspection)
+      end
+
+      describe "translate_field_name" do
+        it "translates field names for prefill display" do
+          get "/inspections/#{new_inspection.id}/edit", params: { tab: "inspection" }
+          
+          expect(response).to have_http_status(:success)
+          # The prefilled_fields will be set if there are fields to prefill
+          expect(assigns(:prefilled_fields)).to be_an(Array)
+        end
+
+        it "handles pass/fail field translation for assessments" do
+          # Update previous inspection's assessment with data
+          previous_inspection.user_height_assessment.update(
+            containing_wall_height: 100,
+            containing_wall_height_comment: "Test comment"
+          )
+          
+          get "/inspections/#{new_inspection.id}/edit", params: { tab: "user_height" }
+          
+          expect(response).to have_http_status(:success)
+          expect(assigns(:previous_inspection)).to eq(previous_inspection)
+          # Prefilled fields would include the ground_clearance fields
+          expect(assigns(:prefilled_fields)).to be_an(Array)
+        end
+      end
+
+      describe "get_prefill_objects for results tab" do
+        it "handles results tab prefill correctly" do
+          previous_inspection.update(
+            passed: true,
+            risk_assessment: "Test risk"
+          )
+
+          get "/inspections/#{new_inspection.id}/edit", params: {tab: "results"}
+
+          expect(assigns(:previous_inspection)).to eq(previous_inspection)
+          # Results tab should only prefill specific fields
+          expect(response).to have_http_status(:success)
+        end
+      end
+    end
+
+    describe "validate_tab_parameter" do
+      let(:inspection) { create(:inspection, user: user, unit: unit) }
+      
+      it "redirects with invalid tab parameter" do
+        get "/inspections/#{inspection.id}/edit", params: {tab: "invalid_tab"}
+
+        expect(response).to redirect_to(edit_inspection_path(inspection))
+        expect(flash[:alert]).to be_present
+      end
+
+      it "allows valid tab parameter" do
+        get "/inspections/#{inspection.id}/edit", params: {tab: "user_height"}
+
+        expect(response).to have_http_status(:success)
+      end
+    end
+
+    describe "log_inspection_event error handling" do
+      it "handles logging errors gracefully" do
+        # Mock Event.log to raise an error
+        allow(Event).to receive(:log).and_raise(StandardError, "Database error")
+        allow(Rails.logger).to receive(:error)
+
+        # This should not raise an error
+        post "/inspections", params: {
+          inspection: {unit_id: unit.id}
+        }
+
+        expect(Rails.logger).to have_received(:error).with(/Failed to log inspection event/)
+        # Request should still succeed
+        expect(response).to have_http_status(:redirect)
+      end
+
+      it "logs system events without specific inspection" do
+        allow(Event).to receive(:log_system_event)
+
+        # CSV export logs a system event
+        get "/inspections.csv"
+
+        expect(Event).to have_received(:log_system_event).with(
+          hash_including(
+            user: user,
+            action: "exported",
+            metadata: hash_including(resource_type: "Inspection")
+          )
+        )
+      end
+    end
+
+    describe "calculate_changes" do
+      let(:inspection) { create(:inspection, user: user, unit: unit) }
+      
+      it "tracks changes correctly in update" do
+        # Store original values
+        original_passed = inspection.passed
+        original_risk = inspection.risk_assessment
+        
+        patch "/inspections/#{inspection.id}", params: {
+          inspection: {
+            passed: !original_passed,
+            risk_assessment: "New risk"
+          }
+        }
+
+        expect(response).to redirect_to(inspection_path(inspection))
+        
+        # Check the event was logged with changed data
+        event = Event.for_resource(inspection).last
+        expect(event.action).to eq("updated")
+        expect(event.changed_data).to be_present
+        expect(event.changed_data["risk_assessment"]).to be_present
+        expect(event.changed_data["risk_assessment"]["to"]).to eq("New risk")
+      end
+
+      it "ignores unchanged values" do
+        original_value = inspection.risk_assessment
+        
+        patch "/inspections/#{inspection.id}", params: {
+          inspection: {
+            risk_assessment: "New risk",
+            passed: inspection.passed  # Same value
+          }
+        }
+
+        expect(response).to redirect_to(inspection_path(inspection))
+        
+        # Check that only changed fields are in changed_data
+        event = Event.for_resource(inspection).last
+        expect(event.action).to eq("updated")
+        expect(event.changed_data.keys).to include("risk_assessment")
+        expect(event.changed_data.keys).not_to include("passed")
+      end
+    end
+
+    describe "validate_inspection_completability" do
+      context "with invalid complete inspection" do
+        let(:invalid_complete_inspection) do
+          # Create an inspection marked as complete but with missing data
+          inspection = create(:inspection, user: user, unit: unit)
+          inspection.update_column(:complete_date, Time.current) # Bypass validations
+          inspection
+        end
+
+        before do
+          allow_any_instance_of(Inspection).to receive(:can_mark_complete?).and_return(false)
+          allow_any_instance_of(Inspection).to receive(:completion_errors).and_return(
+            ["Missing inspection date", "Unit not specified"]
+          )
+        end
+
+        context "in development/test environment" do
+          before { allow(Rails.env).to receive(:local?).and_return(true) }
+
+          it "raises error for invalid completion state" do
+            expect {
+              get "/inspections/#{invalid_complete_inspection.id}"
+            }.to raise_error(StandardError, /DATA INTEGRITY ERROR/)
+          end
+        end
+
+        context "in production environment" do
+          before do 
+            allow(Rails.env).to receive(:local?).and_return(false)
+            allow(Rails.logger).to receive(:error)
+          end
+
+          it "logs error but continues" do
+            get "/inspections/#{invalid_complete_inspection.id}"
+            
+            expect(Rails.logger).to have_received(:error).with(/DATA INTEGRITY ERROR/)
+            expect(response).to have_http_status(:success)
+          end
+        end
+      end
+    end
   end
 
   describe "public routes (no authentication required)" do