You are clearly not in one of the mainstream PS schemes if you have a compulsory retirement age of 60 and you can get full pension after 30 years of service. As I am not familiar with this scheme I will not comment further, other than to note that, post "integration" in 1995, all retirement benefits were integrated with Social Welfare. Perhaps this was not circulated in your sector but it seems surprising that incorrect information would have been in circulation for all of this time.
I am in one of the mainstream PS schemes, I have a compulsory retirement age of 60, some of us do, our pre 1995 colleagues retired at 60 with their full pensions, we will not. Our pension is integrated with Social Welfare entitlements but our benefits remain the same as the pre 1995, something had gone amiss, we actually paid much more in contributions than our pre 1995 counterparts, yet we are being treated differently. We are being made to jump through hoops, sign on the dole, apply for a "supplementary" pension, despite the fact that we have paid all our contributions and worked the required service to be eligible for the very same pension.