The assessment identifies health issues, determines their impact on rail safety work including through investigation or specialist assessment, applies the fitness for duty criteria and manages the worker by directing treatment, monitoring and review, emphasising function in relation to the job rather than diagnosis or impairment as such; the Authorised Health Professional should understand the job requirements, and a generic approach applies to conditions the Standard does not cover and to multiple minor conditions. The history is taken from the completed Health Questionnaire, without which the assessment should not proceed (the Category 3 questionnaire is shorter but still seeks serious conditions affecting track safety); the Authorised Health Professional reviews the responses, elicits and records detailed history for every declared condition and any changes or incidents since the previous assessment, and has the worker sign the declaration that the information is accurate and truthful, countersigning and dating it, with refusal handled as for the disclosure. The clinical examination addresses the body systems relevant to the category as Parts 4 and 5 set out, ordering additional tests or specialist referral where potentially significant problems emerge, contacting the treating doctor only with consent recorded on the Record for Health Professional, and recording any abnormalities, their interpretation against the Standard and the action taken on that form, which may be audited. Periodic assessments are informed by previous outcomes and operator information; triggered assessments focus on the triggering factors and may be targeted or more comprehensive. Category 1 and 2 criteria differ because of the emphasis on collapse risk, and Category 3 criteria address the worker's own safety. Temporary conditions such as major surgery, limb fractures or acute infections need case-by-case judgement. A Safety Critical Worker with potentially serious undifferentiated symptoms such as chest pain, impaired consciousness, confusion, memory loss or dizziness is assessed Temporarily Unfit for Duty until adequately assessed, though possibly fit for non-safety-critical alternative duties, while Fit for Duty Subject to Review may be used for workers needing prompt investigation whose condition is unlikely to pose a safety risk. Where multiple conditions or systemic disorders combine, the Authorised Health Professional considers whether together with medication they could affect sensory processes, cognition, the risk of sudden collapse or musculoskeletal performance and so network safety, and considers task or environment modification or a functional or practical assessment.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.