My script for some reason this script is repeating over and over?

What I want it to do is when the gate gets destroyed it blows up and puts some of its parts down then destroys the parts and the gate is broken until someone repairs it however its repeating.Thanks for the help ahead of time

local wall = script.Parent.Humanoid
local model = script.Parent.Model
script.Parent.Humanoid.Value.Changed:Connect(function()
    if script.Parent.Humanoid.Value.Value <= 0 then
        for num, child in pairs(model:GetChildren()) do
            print("1")
            child.Transparency = 1
            script.Parent.Head.Transparency = 1
        local boom = Instance.new("Explosion")
            boom.Parent = game.Workspace.Gate
            boom.Position = game.Workspace.Gate.Gate.Head.Position
            local part1 = game.ReplicatedStorage.ExplosiveParts.cone:clone()
            local part2 = game.ReplicatedStorage.ExplosiveParts.Explosive1:clone()
            local part3 = game.ReplicatedStorage.ExplosiveParts.Explosive2:clone()
            local part4 = game.ReplicatedStorage.ExplosiveParts.Explosive3:clone()
            local part5 = game.ReplicatedStorage.ExplosiveParts.Explosive4:clone()
            part1.Parent = game.Workspace.ExplosivePartWorkspace
            part2.Parent = game.Workspace.ExplosivePartWorkspace
            part3.Parent = game.Workspace.ExplosivePartWorkspace
            part4.Parent = game.Workspace.ExplosivePartWorkspace
            part5.Parent = game.Workspace.ExplosivePartWorkspace
            part1.Position = game.Workspace.Gate.Gate.Head.Position
            part2.Position = game.Workspace.Gate.Gate.Head.Position
            part3.Position = game.Workspace.Gate.Gate.Head.Position
            part4.Position = game.Workspace.Gate.Gate.Head.Position
            part5.Position = game.Workspace.Gate.Gate.Head.Position
                script.Parent.Head.CanCollide = false
                wait(5)
            part1:Destroy()
            part2:Destroy()
            part3:Destroy()
            part4:Destroy()
            part5:Destroy()

            end
    end
    end)