rnrnThe answer is: You will need to maintain your management system, by completing internal audits to check the system remains effective, and by reviewing its performance against objectives and targets. I can assist you with this if you wish. Your certifying organisation will visit you annually, or sometimes more often, to check by auditing that the management system is still complying with the standards. Your certificate is usually reissued after three years, depending on the results of these audits.