Upon request, an authorized representative of the board shall have the power to inspect and copy or make extracts from the records of any fire department or volunteer fire department concerning any member of the fund or applicant for membership. It shall be the duty of the custodian of such records for the fire department or volunteer fire department to make such records available to an authorized representative of the board at the location at which such records are normally kept. Information so obtained by the board shall not be disclosed by the board except in connection with a matter involving the member or applicant for membership to whom the records relate.