PTS PTS - Personal Track Safety Sentinel Scheme and Fitness 2 — Questions and Answers
Question 1: What information is held on the Sentinel smartcard and how is it verified on site?
- The worker's National Insurance number and employment history
- The worker's name, photograph, Sentinel number, competencies, and their validity periods — verified by scanning the card with a Sentinel reader or the Sentinel app (Correct answer)
- The worker's medical records and fitness to work certificate
- The worker's emergency contact details and blood group
Correct answer: The worker's name, photograph, Sentinel number, competencies, and their validity periods — verified by scanning the card with a Sentinel reader or the Sentinel app
The Sentinel smartcard holds the worker's identity, competencies, and validity dates. It is verified on site by scanning with a Sentinel reader or the smartphone Sentinel app.
The Sentinel smartcard contains encrypted data including the worker's name, photograph, Sentinel reference number, and details of all current and expired competencies with their validity dates. On site, supervisors and COSSes scan the card using a dedicated Sentinel card reader or the Network Rail Sentinel smartphone app to verify that competencies are current and the worker is authorised to perform specific tasks. Unverified or expired cards must not be accepted. The Sentinel database is the central authority for competency records — physical cards are the interface to that database. All workers must carry their Sentinel card whenever working on Network Rail infrastructure.
Question 2: What happens to a worker's Sentinel status if they have not worked on the railway for a prolonged period?
- Their Sentinel card remains valid indefinitely regardless of time away from the railway
- Certain competencies have activity requirements — extended absence may require a return-to-work process, safety briefing, or competency revalidation before the worker can return to work on the network (Correct answer)
- Prolonged absence automatically upgrades their competency due to rest
- The Sentinel scheme only records competencies completed in the previous year
Correct answer: Certain competencies have activity requirements — extended absence may require a return-to-work process, safety briefing, or competency revalidation before the worker can return to work on the network
Some Sentinel competencies have activity requirements. Workers absent for extended periods may need to complete a return-to-work assessment or revalidation before returning to railway work.
The Sentinel scheme recognises that competency requires both formal training and regular practice. Some competencies have minimum activity requirements (e.g. a certain number of shifts or activities per year). Workers who have been absent for extended periods (illness, career break, secondment) may have lost currency in their competencies through inactivity. Employers are responsible for managing return-to-work processes which may include: a refresher briefing; accompanied working with a supervisor; a formal competency reassessment; or completion of updated training modules. The COSS and employer must not simply allow a long-absent worker to return to independent work without appropriate reinduction.
Question 3: Under the Sentinel scheme, what is a 'fitness to work' requirement and who assesses it?
- All workers are deemed fit unless they self-certify as unwell on the day
- Workers must meet defined occupational health standards assessed by an approved occupational health provider before being issued a Sentinel card and at regular intervals thereafter (Correct answer)
- Fitness is assessed only at initial employment, not reviewed thereafter
- Only COSS and ES roles require formal fitness assessments
Correct answer: Workers must meet defined occupational health standards assessed by an approved occupational health provider before being issued a Sentinel card and at regular intervals thereafter
All Sentinel cardholders must meet defined occupational health standards, assessed by an approved occupational health provider at initial certification and periodically thereafter.
The Sentinel scheme requires all registered workers to meet occupational health (OH) standards appropriate to their role. Initial OH assessment covers: vision (including colour vision for certain roles); hearing; general fitness and mobility; absence of conditions that could cause sudden incapacity on track (e.g. epilepsy, uncontrolled diabetes, cardiac conditions). Assessments are repeated at defined intervals (typically every 5 years for most workers, more frequently as workers age). The assessment must be carried out by an approved OH provider registered with Network Rail. A failed or lapsed OH assessment results in suspension of Sentinel card access until the issue is resolved.
Question 4: What must a worker do if they take medication that could impair their ability to work safely on the railway?
- Take the medication and work normally, informing the COSS at the end of the shift
- Declare the medication to their employer and occupational health provider, and not work on the railway if the medication could impair concentration, reaction time, or physical ability (Correct answer)
- Halve the dose on working days to reduce impairment
- Inform the COSS verbally on site and let them decide
Correct answer: Declare the medication to their employer and occupational health provider, and not work on the railway if the medication could impair concentration, reaction time, or physical ability
Any medication that could impair concentration, reaction time, or physical ability must be declared to the employer and OH provider. Workers must not work on the railway if impairment is possible.
The fitness to work requirements of the Sentinel scheme require workers to be free from any condition or substance that impairs their ability to work safely. Many common medications (antihistamines, sedatives, strong painkillers, certain antibiotics) can cause drowsiness, impaired concentration, or slowed reaction times. Workers must declare such medication to their employer and occupational health provider. If the medication is essential and causes impairment, the worker must not work on the railway until the medication course is complete or the OH provider confirms fitness. Failing to declare impairing medication is a serious breach of safety duty and could lead to a fatal accident.
Question 5: What does the Sentinel 'yellow card' (formal safety warning) represent, and what are its consequences?
- A reward given to workers with excellent safety records
- A formal record of a significant safety breach, remaining on the worker's Sentinel record and potentially affecting their ability to work on the network (Correct answer)
- A temporary authorisation to work in a specific area
- An annual performance review document
Correct answer: A formal record of a significant safety breach, remaining on the worker's Sentinel record and potentially affecting their ability to work on the network
A yellow card is a formal record of a significant safety breach. It remains on the worker's Sentinel record and may result in additional training requirements, restrictions, or dismissal for repeat offences.
The Sentinel yellow card is a formal sanction issued for significant safety violations (unsafe behaviour, failure to comply with rules, or contributing to a near miss). Yellow cards are recorded on the Sentinel system and visible to all employers who check the worker's record. Receiving a yellow card typically triggers: a formal investigation; mandatory retraining; a return-to-work assessment; and may affect the worker's ability to be assigned to certain roles. Multiple yellow cards can result in suspension of Sentinel registration, which effectively bars the worker from all Network Rail infrastructure. Yellow cards are part of the accountability framework that reinforces safety compliance.
Question 6: What is the purpose of the 'drugs and alcohol' testing regime under the Sentinel scheme?
- To deter workers from socialising outside work hours
- To detect and deter the use of drugs and alcohol that could impair a worker's ability to make safe decisions on the railway (Correct answer)
- To comply with occupational health insurance requirements only
- To identify workers who may be medically dependent on alcohol
Correct answer: To detect and deter the use of drugs and alcohol that could impair a worker's ability to make safe decisions on the railway
Drugs and alcohol testing under the Sentinel scheme aims to detect and deter impairment from substances that could affect a worker's judgement, reaction time, and ability to work safely near trains.
Network Rail and its contractors operate a zero-tolerance drugs and alcohol policy on railway infrastructure. Workers are subject to pre-access screening, random unannounced testing, and post-incident testing. Limits are defined for legal and illegal substances (including prescription medication that causes impairment). A positive test results in immediate removal from the site and may lead to suspension of Sentinel registration. The testing regime is a key deterrent and detection mechanism within the Sentinel safety culture. Workers must declare any prescription medication that might cause a positive test result (e.g. codeine, benzodiazepines) to their employer in advance.
PTS PTS - Personal Track Safety Sentinel Scheme and Fitness 2
What information is held on the Sentinel smartcard and how is it verified on site?