Hi

is this kind of damage repairable by someone competent or have the doors had it 

thank you ?

The decision would depend on the following factors:

1) How critical are the fire doors to life safety?

2) How critical are the fire doors to asset protection, where this is an important requirement?

3) Are the doors of historical importance or can they be replaced? 

4) What level of competence is available in terms of the knowledge and skills of the maintainer/repairer?

It is important to understand that repairs to fire doors can sometimes void the product certification for the fire performance of the door. However, the door should be maintained in accordance with the requirements of Article 17 of the Regulatory Reform (Fire Safety) Order 2005 so the maintainer/repairer should justify the decisions they make in terms of any repairs they undertake.  Where the decision is made to replace rather than repair, a suitable fire door should be selected to avoid replacement with an inferior door.

If the core of the door is damaged, its time for a new one.