Proposals are due to go to Government soon on the location and number of Urgent Care Centres in Dublin that will be needed to treat sick children, in addition to the new National Children's Hospital.
The centres will mostly deal with less serious cases, to ensure the new emergency department at the new hospital is not swamped with minor cases.
A review report due to be completed soon is expected to recommend two centres, most likely one on each side of the capital.
The Urgent Care Centres will not be so large as to undermine the effective working of the new hospital.
They are to be built and established well in advance of the main hospital opening around 2019 or 2020.
The centres will share a common information technology system, including electronic records, for ease of information and patient transfer.
The review of Urgent Care Centre needs is well advanced and the Department of Health has held detailed discussions with the National Paediatric Hospital Development Board, the CEO of the Children's Hospital Group Board, the HSE National Paediatric Programme and the National Neonatal Programme Leeds.
The danger of a "magnet effect" caused by the new hospital was debated today at a symposium to mark 140 years of care at Temple Street Children's University Hospital.
It is a year since the Government made the decision that the €650m hospital should be built on the campus of St James's Hospital in Dublin.
Minister for Health James Reilly has said the aim is to have planning permission secured by December 2014 and construction begin by spring 2015.
The National Paediatric Hospital Development Board that has been put in place is responsible for building the hospital.
The Children's Hospital Group, involving all three hospitals, has also been established with CEO Eilish Hardiman, to make sure Our Lady's Children's Hospital in Crumlin, Temple Street and the paediatric service at Tallaght move as one entity, before the doors of the new facility open.
The Government has committed €450m to the project, with an extra €200m coming from the sale of the National Lottery.
A new design team will be selected, which will deliver the project from start to completion.