SAFETY OF MACHINERY
Safety of machinery services
Machine safety is a key aspect of protecting workers and minimizing the risk of accidents in the workplace, especially in industries where machines are an integral part of daily operations. Services related to machine safety include a range of activities aimed at meeting legal requirements, improving work efficiency, and safeguarding employees’ health.
We offer:
- stopping time measurement
- conducting risk assessment
- selection and design of safety systems
- design support, preparation of executive documentation
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SAFETY OF MACHINERY
Stopping time measurement
Stopping time measurement according to PN-EN ISO 13855 consists in determining the overall efficiency of the system stop, i.e. the time that passes from the moment a part of the human body enters the zone secured by the safety device to the moment the dangerous function of the machine is terminated. The obtained results allow for proper selection and placement of the safety device.
Measurements are performed on newly built machines as well as on machines in operation. Periodic measurements of the overall stopping performance of the system are required and necessary due to: damage, wear and aging of the system components that ensure the stopping of dangerous machine functions.
Protective devices for which we perform measurements:
- safety curtains
- two-hand control switches
- laser safety scanners
- pressure mats
Measurements are carried out using measuring equipment Stop Time Meter Safetyman DT2 manufactured by „hhb ELECTRONIC”.
SAFETY OF MACHINERY
Risk assessment
Risk assessment is a process including risk analysis and evaluation, which is carried out on the basis of PN-EN-ISO 12100 standard. The purpose of risk analysis is to collect information about all possible threats that may occur in various phases of a machine life cycle. Identification of hazards already at the design stage is very important for proper risk assessment.
Risk assessment is carried out for identified hazards, which is the determination of the severity of a probable damage and the probability of its occurrence. In the next step an evaluation is carried out, which is a risk assessment based on the results of the analysis.
If the risk is not acceptable, it is necessary to reduce the risk and reassess whether the goal has been achieved. Risk reduction can be achieved through protective measures, and any risk remaining, despite undertaking protective measures, is a residual risk.
When conducting risk assessment, risk assessment documentation is created for you.
This includes information such as a description of the machine, the assumptions made, the hazards identified, the objectives of risk reduction, the result of the risk assessment, a description of any residual risk and all relevant information used in the risk assessment.
SAFETY OF MACHINERY
Selection and design of safety systems
The design of a safety system is based on risk assessment performed beforehand. Our goal is to choose a solution that provides the right level of safety. Determination of Performance Level according to PN-EN ISO 13849-1 standard..
What is Performance Level (PL)?
Performance Level is a measure used in the EN ISO 13849-1 standard for machine safety. It is expressed in five levels, indicated by the letters a through e, where:
PL a – represents the lowest level of reliability for the safety function,
PL e – represents the highest level of reliability and safety.
PL defines the probability of failure of the safety function and its effectiveness in preventing accidents.
Performance Level depends on three main factors:
- Severity (S) – The severity of potential injuries in case of failure:
S1: minor injuries (e.g., light cuts),
S2: serious injuries or death. - Frequency (F) – The frequency and duration of exposure to the hazard:
F1: rare or short exposure,
F2: frequent or prolonged exposure. - Possibility (P) – The possibility of avoiding the hazard:
P1: avoidable,
P2: difficult to avoid.
Based on these parameters, after a risk assessment, the required PL category is determined, which the safety system must meet.
SAFETY OF MACHINERY
Design support, preparation of executive documentation
- We provide technical consultations, offering support in the implementation of projects – this applies to both new investments and the modernization of machines.
- We assist in adapting machines and production lines to comply with current regulations.
- In the process of ensuring machine safety, it is important to prepare technical documentation, user information, and define necessary procedures related to machine operation and maintenance.
- We inspect completed installation work, create technical-operational documentation and instructions, ensuring the machine’s continued use is safe and reliable.
