(redirected from Safety Integrity Level)
Also found in: Dictionary, Thesaurus, Legal, Acronyms, Encyclopedia, Wikipedia.
Related to Safety Integrity Level: Hazop


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 ?
It is suitable for use for all automotive safety integrity levels (ASIL), up to and including the most stringent level, ASIL D.
IEC 61508 establishes the level of safety risk for a system or system component using four levels (1-4) Safety Integrity Levels (SIL) where Level 4 represents the highest risk with the most stringent safety requirements.
Freescale's new SafeAssure solutions - the Qorivva MPC574xP 32-bit microcontroller (MCU) and system basis chip (SBC) MC33906/7/8 families - help automotive systems meet all Automotive Safety Integrity Levels (ASIL) up to and including the most stringent one, ASIL D.
Meyer continued: "Our ESC provides a powerful execution platform for third party software components and algorithms with the most demanding safety integrity levels (ASIL-D) combined with the very latest industry software standard (Autosar).
The IEC61508 guidelines define three safety integrity levels (SIL) for evaluating product and safety functions with SIL3 the highest level for factory automation systems.
The ISO/DIS 26262 standard establishes the level of safety risk for a system or system component using four levels (A-D) of Automotive Safety Integrity Levels (ASIL) where Level D represents the highest risk with the most stringent safety requirements.
The level of risk reduction with SIS is rated in different levels -- the so called safety integrity levels (SIL).
0 will also be of particular use to those C/C++ developers for whom standards compliance is a prime concern, as it can be used for on target verification against the highest Safety Integrity Levels such as IEC 61508 including all industry specific variants (SIL 4), IEC 62304 (Class C) and DO-178B (Level A), and comes with a full tool qualification / certification package that is provided free of charge.
The Nucleus SafetyCert RTOS has been designed, validated and documented to be used in the development of safety-related software for the highest safety integrity levels of the International Electrotechnical Commission (IEC) standards 61508 and 62304 for industrial and medical devices, and for avionics devices requiring the highest levels of DO-178C certification.
Security monitoring equipment will be at the required safety integrity levels (SIL) according to EN 61511, addition of the ATEX Directive 94/9/EC is to carry invoice.
The SPC56EL70 32-bit microcontroller is the newest member in ST s product line designed to cover a wide range of automotive applications that need to respect the automotive safety integrity levels (ASIL) that are now required, up to and including the most stringent ASIL D level.