Safety during maintenance

Lockout/Tagout—A safe work practice in which energy sources are positively blocked away from a segment of a process with a locking mechanism and visibly tagged as such to help ensure worker safety during maintenance and some operations tasks. 

Low preventative maintenance and operating requirements together with reliable safety during operation. 

The Safety Lifecycle (SLC) is an engineering process that contains all the steps needed to achieve high levels of functional safety during conception, design, operation, and maintenance of instrumentation systems. Its objective is clear An automation system designed according to SLC requirements will predictably reduce risk in an industrial process. A simple version of the SLC is shown in Figure 1-3. 

Ease and safety during operation and maintenance, proper supports and staircases, work platforms, shadowless lighting, railings around the reactors, and process vessels to prevent accidental fall inside the vessel—all such steps improve the confidence and motivate the working persons for paying more attention to the operations. 

The focus of this research is to examine risks associated with the construction, maintenance and demolition process rather than the risks to the users resulting Ifom the permanent works during the use of the structure. However, the research has identified some useful backgroimd information which may enable designers to better consider health and safety during the use of the coastal structure and these issues which is presented here. 

If safety specialists are not part of a design team, at least there should be a thorough safety review of a design by a safety specialist. The review should cover safety features built into the facility and safety during use of the facility. The review should consider operation, maintenance, repair, and servicing of the facility and its subsystems and equipment. The design must cover routine use of a facility and activities of facility caretakers. It must cover special activities important for emergencies and rescue. 

Maintenance operations in industry include a variety of risks, which may endanger the maintenance worker during the maintenance task and/or weaken the post-maintenance system s safety and reliability (Lind 2(X)9). For the worker, maintenance operations may be riskier than many other tasks in industry, because in addition to the acmal maintenance operation itself, maintenance operations also include system disassembly and reassembly with the related risks. 

Ensuring safety during maintenance and adjustment of machinery. 

SIS operation and maintenance Maintenance of functional safety during operation and maintenance. 16... 

A limited search for literature that addresses designing for safety during maintenance came up short. There is a relevant paragraph or... 

The isolation of an electrical circuit involves more than switching off the current in that the circuit is made dead and cannot be accidentally re-energized. It, therefore, creates a barrier between the equipment and the electrical supply which only an authorized person should be able to remove. When it is intended to carry out work, such as mechanical maintenance or a cleaning operation on plant or machinery, isolation of electrical equipment will be required to ensure safety during the work process. Isolators should always be locked off when work is to be done on electrical equipment. 

The duty regarding maintenance is currently limited to structural matters, but it is important that designers also consider safety during routine maintenance that is affected by their designs - e.g. how are high-level lights and ventilation systems to be maintained ... 

The Westinghouse APIOOO design employs construction methods and a plant layout that are conducive to safe operations during construction. Much ofthe design is modular which allows the build and test of sub assemblies to be undertaken in a factory environment. The size of the plant and the number of components is also significantly less than previous generations of PWRs. These approaches reduce site construction work and the risks from those activities. Modular constmction in a factory environment also has a positive effect on product quality, which improves safety and facilitates reduced maintenance requirements during the operation of the plant. 

The HSE/EA guidance also introduces the concept of a radioactive waste management case (RWMC). Guidance on the production, content, maintenance, and review of a RWMC has been issued by the HSE/EA (Reference 15.3). The RWMC needs to address longer-term safety (e.g., safety during on-site storage pending final oflf-site disposal) and environmental issues associated with a particular waste stream. 

In an attempt to cut costs and increase profits BP had been cutting maintenance budgets during the previous few years. This led to inefficient maintenance programmes and a backlog of deferred corrective work, especially on critical safety items. 

Without grounding, human safety during maintenance work, for example, cannot be guaranteed, and the voltage of a circuit to be tested or to be simulated cannot be measured. 

Decision gate four (DG4) involves the go-ahead for start-up of production of oil and gas. Norskoil s operations organisation is responsible for this decision. All essential processes, drilling, utility and safety systems must be ready, as well as the organisation and the procedures for the operation of the platform. Production also involves maintenance and modifications of the installation. Again, Norskoil as the operator has the main responsibility for safety during all these activities. 

The CertPack of the COTS component will provide a source of evidence for the system s safety case. Figure 1 illustrates part of a proposed update to the BAE SYSTEMS Hawk T.Mk2 mission computer software safety case (Despotou et al. 2009), to incorporate COTS components. This safety case contains the arguments about the contribution of the COTS component to safety. The architecture of this modular safety case is intended to mitrimise the maintenance overhead during... 

The maintenance practice of removal and buffering of electrodes is costly and often counterproductive because it reduces measurement accuracy due to damage of the gel surface of the glass electrode, and the upset to the thermal and ionic equilibrium of the reference electrode. It is possible to improve the performance of pH electrodes and safety during pH maintenance and reduce the cost of pH maintenance by an order of magnitude through more realistic expectation, and the use of a better calibration policy that uses process standardization and relaxed tolerances, described in section 4-9. 

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