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Related to Safety instrumented system: Safety Integrity Level


n. pl. safe·ties
1. The condition of being safe; freedom from danger, risk, or injury.
2. A device designed to prevent accidents, as a lock on a firearm preventing accidental firing.


Relative freedom from harm, a term which, in clinical trials, refers to an absence of harmful side effects resulting from use of the product under investigation; it may be assessed by laboratory testing of biological samples, special tests and procedures, psychiatric evaluation, and/or physical examination of subjects/patients.


Public health The state of being secure or safe from injury, harm, or loss; a judgment of the acceptability of risk–a measure of the probability of an adverse outcome and its severity associated with using a technology in a given situation–eg, for a Pt with a particular health problem, by a clinician with certain training, or in a specified treatment setting. See Injury, Injury prevention, Negotiated safety, On-line safety.


n the condition of possessing freedom from being exposed to risk, danger, or harm.


avoidance of occupational, iatrogenic or personal injury.

drug safety
freedom from undesirable side-effects; increases with specificity and selectivity of a drug. See also safety index (below).
safety index
maximum tolerated dose/recommended dose, the doses being expressed in similar terms, e.g. mg/lb, mg/kg.
radiological safety routine
the specific routine to be followed in an x-ray room to ensure minimal risk to all parties.
restraint safety
proper use of appropriate restraint procedure when dealing with any animal.
safety specifications
specifications laid down by a local government authority about the construction and equipment to be used in a radiological facility.

Patient discussion about safety

Q. what measures are in place to ensure the safety of vaccines. Hello there, I read the previous question which was asked by Edmund. This question made me to think, what measures are in place to ensure the safety of vaccines.

A. Not only related to Autism, we have to be very cautious when we vaccine for other diseases too. As with all medical products, vaccines undergo extensive testing to document their efficacy and to explore potential harms. Before a potential vaccine is licensed for use, FDA scientists conduct a thorough and independent review of the testing data and often employ the help of an FDA public advisory review committee. In addition, FDA rigorously oversees the manufacturing process for vaccines used in this country - including approval of each step in the process and on site inspection. Following licensure, vaccines continue to be monitored through information shared by parents, doctors, and other public health officials.

Q. Contact lenses I’m 17 years old girl, and I have glasses since third grade. I never had any real problems with wearing them,. my best friend always encourage me to try contact lenses, but it seems so strange to put something on directly on your eyes- is it safe? How difficult is it to do?

A. Consult your ophthalmologist (eye doctor) before you decide.

More discussions about safety
References in periodicals archive ?
There is a growing demand in the oil, natural gas, petrochemical, iron and steel, and other energy and basic materials industries for safety instrumented systems that can help to ensure the safety of plant operations.
The Rosemount 5400 Series of non-contacting radar level transmitters are approved for safety instrumented systems.
The second edition adds sections on serial communication links, safety instrumented systems, and level meter examples.
Third party validated metrics are available per JEC 61508 for use of the Rosemount 3144P in Safety Instrumented Systems (SIS).
Honeywell is responsible for designing, delivering and installing the distributed control systems (DCS), safety instrumented systems, fire and gas systems, and operator training simulator (OTS) for the project.
These measures can be addressed to different layers of protection: one can make the plant inherently safer by redesigning processes or implement safety instrumented systems (SIS) which are capable of bringing the process back to a safe state, for example, by an automatic shutdown.
The project scope includes Foxboro-brand I/A Series process control systems, Triconex TMR safety instrumented systems and fire and gas protection systems, plus associated project engineering services.
Forecasts for the Safety Instrumented Systems Market Analysis: Application Analysis
The cooperation would join the market-leading strengths of the two companies to transform Safety Instrumented Systems (SIS) Lifecycle Management and Process Safety Management (PSM) for the European Oil & Gas and Petrochemical industries.
What is interesting to note and something most manufacturers should keep a vigilant eye on is just about 66 per cent of safety instrumented systems in use today predate these standards.
Emerson Process Management has announced the availability of its Rosemount 5300 Guided Wave Radar (GWR) level transmitters for SIL 2 safety instrumented systems.