In spark test, AC or DC apparatus is linked that has a broom. The area of the reactor that has a glass lining is brushed using a broom. If a defect or destroyed aspect comes in connection with the broom, it generates a spark since the destroyed portion exposes MS https://dallasceeca.activablog.com/28489084/how-much-you-need-to-expect-you-ll-pay-for-a-good-glass-lined-reactor-pressure-vessel