Albert74 & oldgit

The minimum withdrawals from a RRIF start at age 55 if you have set up a RRIF that young. 

http://www.taxtips.ca/rrsp/rrif-minimum-withdrawal-factors.htm

I also want to mention to Albert that there is a 'pension' credit of $2000 annually from pension income that kicks in at age 55. So if you are trying to wind down a RRSP in the most tax efficient manner it can make sense to create a RRIF at retirement that is large enough to allow you to withdraw this amount and take advantage of the credit until you are forced to create a RRIF with any remaining RRSP money at age 71. 

I will also point out that when setting up a RRIF (it HAS to be done when creating the RRIF) that you can use the younger spouse's age to calculate the minimum withdrawals. Example, I am younger than my wife so when setting up her RRIF we will use MY age to determine minimum RRIF withdrawal rates.