Safety information, accumulation

Another immediate safety culture gauge is the safety notice board. Are safety notices, posters, and other information on the notice board dirty, dog-eared, yellowed, and tattered This shows that they have not received attention for a long time and is an indicator of poor attention to safety information. If they are neat and tidy, updated, and neatly arranged on the board, this means they are kept current and indicates that there is awareness concerning safety information. Accumulation of dust on workshop shelves and on the tops of cabinets could indicate a potential respiratory risk. Why is dust present in the work area Are damping or extraction systems functioning correctly Are employees exposed to potential risks ... 

Setting up a safety information system for a single project or product may be easier. The effort starts in the development process and then is passed on for use in operations. The information accumulated during the safety-driven design process provides the baseline for operations, as described in chapter 12. For example, the identification of critical items in the hazard analysis can be used as input to the maintenance process for prioritization. Another example is the use of the assumptions underlying the hazard analysis to guide the audit and performance assessment process. But first the information needs to be recorded and easily located and used by operations personnel. 

On a project of this scale, which is multi-disciplinary in nature and involves contractors from many different companies, a great deal of information accumulates that is relevant to safety. It is vital that this is managed in an efficient manner. 

Information is collected, and presented in a hopefully easy to understand form more information is collected and merged with already processed information, accumulated knowledge is manipulated, and the arguments in support of derivation of a safety case are generated. 

If solids are allowed to accumulate on the underside of a bursting disc or safety valve, then it is likely that the relief device will not operate when required, at least not at. the required set pressure. Safety valves may be more vulnerable in this respect than bursting discs, and it is common practice to fit a bursting disc upstream of the safety valve to protect it. Further information is given in 10.2.1 and reference 1. 

It often requires 4-6 years of clinical testing to accumulate all required data. Testing in humans is begun after sufficient acute and subacute animal toxicity studies have been completed. Chronic safety testing in animals is usually done concurrently with clinical trials. In each of the three formal phases of clinical trials, volunteers or patients must be informed of the investigational status of the... 

Most supercritical fluid equipment use CO2 non toxic, non flammable, it is particularly safe. However, CO2 build-up in closed rooms could lead to people asphyxia. It is the reason why all possible CO2 emissions (exit valves, safety valves, rupture disks,...) must be collected in a "over-dimensioned" vent line ensuring a good dispersion of the gas in the outside atmosphere. Moreover, it is highly recommended to install CO2 detectors in the equipment room but also in any connex room, for action on high power fans and operators information. Anyway, it is preferable not to operate an equipment in rooms located over other rooms, especially underground cellars, where CO2 that is heavier than air may accumulate. 

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