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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.
This report provides an in-depth analysis of the safety instrumented systems (SIS) market in China outlining total sales of safety systems, market shares, end-user habits, and analysis of key market trends.
It is widely accepted as the design standard for critical safety instrumented systems in the global oil and gas industry.
Among the topics are compositional analysis for weak stubborn sets, run-time programming through model-preserving scalable run-time patches, towards supervisory control of interactive Markov chains, an improved parallel composition of labeled Petri nets, and modeling for the symbolic analysis of safety instrumented systems with clocks.
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).
According to a new market research " Safety Instrumented Systems Market by Component (Switches, Sensors, and Programmable Safety Devices)by Product (ESD, F&G, and HIPPS), by Application (Chemical, Oil & Gas, and Power Generation), and by Geography - Global Trends & Forecasts to 2014 - 2020 " , Published by MarketsandMarkets, the total Safety Instrumented Systems Market was valued at $2.
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.
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
WG Mustang Automation and Control s multi-million dollar project scope includes procurement, integration and packaging of the distributed control systems, safety instrumented systems, analyzers, information and telecommunications systems, and other associated equipment that will help the expanded plants to run safely, efficiently and within environment regulations.
Our report reveals forecasts for the 5 leading key product types as follows: -- Distributed Control Systems (DCSs) forecast 2015-2025 -- Programmable Logic Controllers (PLCs) forecast 2015-2025 -- Safety Instrumented Systems (SISs) forecast 2015-2025 -- Supervisory Control and Data Acquisition (SCADA) systems forecast 2015-2025 -- Manufacturing Execution Systems (MESs) forecast 2015-2025 -- Plus other aggregated oil & gas automation & control technologies forecast 2015-2025