Hareesh,
If, for starters, you follow the manufacturers recommendations in the manual you cannot be wrong, you do not need an outside body to accredit you.
There then comes the issue that has been often discussed here as to whether one carries on doing this or modifies it. I do not intend to start that debate up again you can read it for yourself in various topics on this forum.
But in essence what people do is to modify the manufacturers procedures in light of the own knowledge and experience, gained from similar devices or from the devices in question over time. They then document the changes they are making and most importantly the reasons behind them. This process needs to be under constant review and preferably reviewed by others in the same field. i.e. get together a team from several hospitals and discuss this and come to a consensus of opinion.
An example:
The manual says change a part every three months, if you see no wear on it you decide to change it every six months, if you still see no increase in the rate of failure you might consider increasing this time scale some more. If however the failure rate goes up you decrease the time between replacements. This results in the minimum of work for no increase in failure or compromise in safety.
This holds true for routine testing as well, if you are testing something and find no faults and need to do no alterations you can increase the time between tests. But as soon as you see things out of tolerance and you need to do remedial work you have gone too far and have to do more frequent testing. Again you are increasing time to the maximum before you start seeing an effect on the equipment and then backing off.
There is no body that will tell you that you are absolutely right or wrong in what you are doing for each item of equipment, only the manufacturers provide service recommendations. Some people say they tell you to do too much testing and replace parts too frequently so they can sell them to you. I am not going to get in to the areguement whether these people are right or unsafe.
Whether you follow the manufacturers or decide to start from their recommendations and modify them using risk analysis is a decission only you can make. Do you need an outside body to do this? I think not.
I do not know the situation in your country and whether insurance and legal liability will have some effect on what you are doing and how you modify it. You will have to take this in to account as well. This is the debate that has been argued many times on this forum. Whether we have the right to modify the manufacturers procedures. But which ever view one takes it all starts from the manufacturers procedures. And if you take that as your starting point you have your external accreditation. "I am doing what this company says needs to be done to its product."
I hope this helps
Regards
Robert
