What is Sciatica? Sciatica is not so much a condition but actually a symptom. It refers to pain that begins in the hip and buttocks and continues all the way down the leg. This symptom is often accompanied by low back pain, which can be more or less severe than the leg pain.
21. How often is a security clearance renewed? An individual is normally subject to periodic reinvestigation at a minimum of every five years for a TOP SECRET level clearance, every 10 years for a SECRET level clearance and every 15 years for a CONFIDENTIAL level clearance. 22. What can cause a delay in the security clearance process?
The expiry date for SC clearance will be shown on the certificate you get from the Defence Vetting Agency. Last time I had it done, it lasted for 5 years. However, if you stop working in a job for which SC clearance is required, it expires after one year, regardless of what your certificate says. Jan 24, 2010.