On the Powerlink Home page - there will be a Quick Service Request Search field on the right side of the page.

Also, you can search the Service request by navigating through -

Home > Support > Request Support > View Service Requests

and provide the search criteria.

However, you must be listed as a contact for the site and allowed to see the service requests for your site. Or else, you will not be able to see the service request.

Hope this helps.
Thanks,
Sandip