The Food Safety Authority of Ireland has authorised officers who have extensive powers to enter and inspect food premises, to secure these premises for later inspection, to inspect and, if necessary remove records. These officers may take samples of food or related materials and have these samples analysed and it is an offence for any person to obstruct/deny entry or confront an officer in carrying out this duty.
The authorised officers are the staff of the various agencies involved in food safety, including Environmental Health Officers from the Health Service Executive (HSE).
Food surveillance is conducted by the relevant Authorities to:

Surveillance involves the sampling and testing of foods. This can be done in many ways:
The food control laboratories work to rigorous standards and possess the latest analytical equipment. The results of these tests are communicated back to the enforcement officer, who takes appropriate action, and also to the FSAI who formulates a national picture of food controls and communicates this to the European Commission.
In certain circumstances the FSAI also organises specific surveillance projects. These are focused on specific foodstuffs, specific tests and specific contaminants. Samples are taken by the food law enforcement officers and at other times samples are taken by the FSAI itself. Where possible these samples are tested in the food control laboratories but where necessary the testing is conducted in accredited third-party laboratories.