98.—(1) Where an authorised person or a member of the Garda Síochána is of the opinion—

(a) that a safety critical worker, who is performing a safety critical task or who has made himself or herself available to perform a safety critical task by attending at work,

(i) has consumed intoxicating liquor, or

(ii) is committing or has committed an offence under section 97,

or

(b) where a railway accident or incident occurs, that—

(i) a safety critical worker was performing or had performed a safety critical task on the railway infrastructure, or on the train, involved with the accident or incident, or

(ii) a safety critical worker failed to perform a safety critical task expected of him or her, on the railway infrastructure, or on a train, involved with the accident or incident,

or at the request of an inspector who is of such opinion, he or she may make a requirement of the safety critical worker under subsection (3)(.

(2) Without prejudice to subsection (1), a member of the Garda Síochána or an authorised person may, for the safe operation of a F125[railway organisation], at random and in circumstances that are reasonable, make a requirement under subsection (3) of a safety critical worker who is performing a safety critical task or who has made himself or herself available to perform a safety critical task by attending at work.

(3) A member of the Garda Síochána or an authorised person, may, in the circumstances referred to in subsection (1) or (2), require a safety critical worker—

(a) to provide, or to accompany him or her to a place (including a vehicle) at or in the vicinity of the railway infrastructure concerned and there require the worker to provide, by exhaling into an apparatus for indicating the presence of alcohol in the breath, a specimen of his or her breath, or

(b) where the authorised person or member does not have such apparatus with him or her, to remain (for not more than one hour), at an appropriate place on the railway infrastructure concerned or at the scene of the accident or incident, in his or her presence or in the presence of another authorised person or member of the Garda Síochána until such an apparatus becomes available to him or her and the authorised person or member may then require the worker, to provide by exhaling into such an apparatus, a specimen of his or her breath.

(4) Where an authorised person is of the opinion that a safety critical worker, who is performing a safety critical task or who has made himself or herself available to perform a safety critical task by attending at work, has consumed intoxicating liquor, or is committing or has committed an offence under section 97, and where a member of the Garda Síochána is not present, the authorised person shall require the safety critical worker concerned to remain (for not more than one hour), as the case may be, at an appropriate place on the railway infrastructure concerned or at the scene of the accident or incident, in his or her presence or in the presence of another authorised person, pending the arrival of a member.

(5) A member of the Garda Síochána or an authorised person making a requirement under subsection (3) may indicate the manner in which the safety critical worker is to comply with the requirement.

(6) A safety critical worker who refuses or fails, to comply immediately with a requirement under this section, or to comply immediately with such a requirement in a manner indicated by a member of the Garda Síochána or an authorised person, is guilty of an offence.

(7) In a prosecution for an offence under this Chapter, it shall be presumed, until the contrary is shown, that an apparatus provided by a member of the Garda Síochána or an authorised person for the purpose of enabling a person to provide a specimen of breath under this section is an apparatus for indicating the presence of alcohol in the breath.