Typically, other libraries will allow us 1 renewal. However, some libraries may allow more or fewer renewals.
If you still need the item after the allotted number of renewals, you may submit another renewal request, but it may not be approved by the lending library. If that happens, you can submit a new request for the item, but you will need to return the copy you have.
Remember, you do not need to renew articles. They are available in the system for 30 days, so as long as you download the file during that time, then you will have it indefinitely. If you need to re-download the article again after that time, you'll need to submit another request for it.