RE: Risk assessment
Stig, You may wish to take a look at SEMI S10. It is the basic tool used in the semiconductor equipment arena to quantify risk and hazard. It is available from www.semi.org. Regards, Alan Brewster Senior Systems Safety Engineer N Novellus Systems, Inc. (408) 570-6584 alan.brews...@novellus.com mailto:alan.brews...@novellus.com -- From: Stig Jorgensen [SMTP:jorgen...@skyskan.com] Sent: Thursday, December 07, 2000 12:25 PM To: emc-p...@ieee.org Subject: Risk assessment Hi Group, Dec 07,2000 I am in the process of establishing the potential for an injury from a hazard. I can get a reasonable 'expression' to describe the potential for a hazard to turn into an accident (event). I am looking for the words that classifies the degree of an injury. Can some one direct me to some standard definitions? Do we base it on the length of work stoppage? i.e. a minor burn on a finger tip smarts for an hour or two. A good shock working with vacuum tubes, 300V, slowed you down for the rest of the day and so on. Has some one worked out a practical scale for the degree of an injury. It can be numbers or words as long as they are defined. If it does not exist let us generate one that we all agree on.-- or most of us. When it comes to property damage I think that a monetary replacement cost would be expressed in 'small', 'medium', 'large' etc where each is defined in 'very' general monetary terms. Thank you for your assistance. Sincerely Stig W. Jorgensen jorgen...@skyskan.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Risk assessment
Hi Stig, One of my side jobs is in the Army National Guard Field Artillery. We perform a risk assessment at each firing point we pull into using an Army manual, FM 100-14 (Risk Management). I was surprised to see how closely their documentation parallels EN 1050 in many aspects. Here's a quick look at some of the terms and definitions used that relate to your inquiry: Hazard Severity: * Severity - The expected consequences of an event in terms of degree of injury, property damage or mission-impairing factors. *Catastrophic - Death or permanent total disability, system loss, major damage, significant property damage or mission failure. * Critical - Permanent partial disability, temporary total disability in excess of three months, major system damage, significant property damage or significant mission degradation. * Marginal - Minor injury, lost workday incident, minor system damage, minor property damage, or some mission degradation. * Negligible - First aid or minor medical treatment, minor system impairment, little or no impact on mission. Hazard Probability: * Probability - The likelihood an event will occur. * Frequent - Occurs often or continuously experienced. * Likely - Occurs several times. * Occasional - Occurs sporadically. * Seldom - Unlikely, but could occur at some time. * Unlikely - Can assume it will not occur Hope this is helpful. Sincerely, Robert Loop Engineering Supervisor Wyle Laboratories Product Safety ph - (256) 837-4411 x313 fax- (256) 721-0144 e-mail: rl...@hnt.wylelabs.com -- From: Stig Jorgensen[SMTP:jorgen...@skyskan.com] Reply To: Stig Jorgensen Sent: Thursday, December 07, 2000 2:24 PM To: emc-p...@ieee.org Subject: Risk assessment Hi Group, Dec 07,2000 I am in the process of establishing the potential for an injury from a hazard. I can get a reasonable 'expression' to describe the potential for a hazard to turn into an accident (event). I am looking for the words that classifies the degree of an injury. Can some one direct me to some standard definitions? Do we base it on the length of work stoppage? i.e. a minor burn on a finger tip smarts for an hour or two. A good shock working with vacuum tubes, 300V, slowed you down for the rest of the day and so on. Has some one worked out a practical scale for the degree of an injury. It can be numbers or words as long as they are defined. If it does not exist let us generate one that we all agree on.-- or most of us. When it comes to property damage I think that a monetary replacement cost would be expressed in 'small', 'medium', 'large' etc where each is defined in 'very' general monetary terms. Thank you for your assistance. Sincerely Stig W. Jorgensen jorgen...@skyskan.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Risk assessment
This is also the Risk Assessment matrix that all military services and several other government agencies used in program/product development. It is included in Mil-Std-882D, DOD Standard Practice for System Safety - released February 2000. System Safety is generally the equivalent to Product Safety. This standard is not a specification standard but a management standard. It provides a list of different tasks that can be imposed on a contractor to investigate for hazards, assign value to the hazard risk, and evaluate corrective action for elimination or mitigation of the risk. It is a good tool. Another tool that complements this for risk assessment and is well worth the cost is the System Safety Analysis Handbook - A Source Book for Safety Practictioners published by the System Safety Society. You can get a copy of MIL-STD-882D at the following site: http://www.system-safety.org/ They also have a copy of MIL-STD-1472F - DOD Design Criteria Standard Human Engineering - released August 1999 You can also purchase either a paper copy or CD of the Handbook from here. The site provides a table of contents and an matrix of the methods and practices included in the handbook. Here is a excerpt from the handbook description: The Handbook is a stand-alone document. The 2nd Edition of the Handbook has 626 pages and contains a compilation of 101 analysis techniques and methodologies, plus other related information for every safety practitioner. It addresses system safety planning, Process Safety Management (including OSHA and EPA requirements), software system safety, and a section on the application of fuzzy and hybrid mathematics to safety analysis. A glossary is included. The reference section includes a recommended readings list. rloop%hnt.wylelabs@interlock.lexmark.com on 12/08/2000 10:34:51 AM Please respond to rloop%hnt.wylelabs@interlock.lexmark.com To: jorgensen%skyskan@interlock.lexmark.com cc: emc-pstc%majordomo.ieee@interlock.lexmark.com (bcc: Oscar Overton/Lex/Lexmark) Subject: RE: Risk assessment Hi Stig, One of my side jobs is in the Army National Guard Field Artillery. We perform a risk assessment at each firing point we pull into using an Army manual, FM 100-14 (Risk Management). I was surprised to see how closely their documentation parallels EN 1050 in many aspects. Here's a quick look at some of the terms and definitions used that relate to your inquiry: Hazard Severity: *Severity - The expected consequences of an event in terms of degree of injury, property damage or mission-impairing factors. * Catastrophic - Death or permanent total disability, system loss, major damage, significant property damage or mission failure. *Critical - Permanent partial disability, temporary total disability in excess of three months, major system damage, significant property damage or significant mission degradation. *Marginal - Minor injury, lost workday incident, minor system damage, minor property damage, or some mission degradation. *Negligible - First aid or minor medical treatment, minor system impairment, little or no impact on mission. Hazard Probability: *Probability - The likelihood an event will occur. *Frequent - Occurs often or continuously experienced. *Likely - Occurs several times. *Occasional - Occurs sporadically. *Seldom - Unlikely, but could occur at some time. *Unlikely - Can assume it will not occur Hope this is helpful. Sincerely, Robert Loop Engineering Supervisor Wyle Laboratories Product Safety ph - (256) 837-4411 x313 fax- (256) 721-0144 e-mail: rl...@hnt.wylelabs.com -- From: Stig Jorgensen[SMTP:jorgen...@skyskan.com] Reply To:Stig Jorgensen Sent: Thursday, December 07, 2000 2:24 PM To: emc-p...@ieee.org Subject: Risk assessment Hi Group,Dec 07,2000 I am in the process of establishing the potential for an injury from a hazard. I can get a reasonable 'expression' to describe the potential for a hazard to turn into an accident (event). I am looking for the words that classifies the degree of an injury. Can some one direct me to some standard definitions? Do we base it on the length of work stoppage? i.e. a minor burn on a finger tip smarts for an hour or two. A good shock working with vacuum tubes, 300V, slowed you down for the rest of the day and so on. Has some one worked out a practical scale for the degree of an injury. It can be numbers or words as long as they are defined. If it does not exist let us generate one that we all agree on.-- or most of us. When it comes to property damage I think that a monetary replacement cost would be expressed in 'small', 'medium', 'large' etc where each is defined in 'very' general monetary terms. Thank you for your assistance. Sincerely Stig W. Jorgensen jorgen...@skyskan.com --- This message is from the IEEE EMC Society
Re: Risk assessment
Deep within a very interesting paper on EMC and Functional Safety by the IEE at http://www.iee.org.uk/PAB/EMC/core.htm in section 13.5 (page 49 on my copy) are pretty classic descriptions of probability and severity. These probably are descendents of MILSTD1442, and are probably also treated in EN1050. By the way, I ran across this when it was mentioned at www.conformity.com, a quite useful site, and one at which you can sign up for a weekly email of conformity issues. Mike Sherman FSI International --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Risk assessment
Hi Stig, I have a copy of Croner's Industrial Equipment Safety which has a risk calculator which is based on a nomogram introduced in British Standard BS 5304:1988. The calculator has three input parameters, Probability level, Exposure Frequency and Consequences. The output of the calculator gives you a risk level. The consequences are categorised as follows, Category 1, Insignificant : Bruising, light abrasions etc Category 2, Minor : Cuts etc requiring first aid. Category 3, Major : Loss of consciousness, burns, (3 days off work)(Normally reversible) Category 4, Severe : Permanent disability, loss of sight, amputation, respiratory damage, (Normally irreversible) Category 5, Fatality : Including delayed effects. Category 6, Multiple Fatalities : Including delayed effects. The input parameters are arranged as three vertical scales with a tie line such that when you draw lines to link up your input assessments, the last line will point to the associated risk level. It's a bit difficult to describe verbally. Let me know if you would like more details. Regards, Cameron O'Phee. EMC Safety Precompliance. Aristocrat Technologies Australia. Telephone : +61 2 9697 4420 Facsimile : +61 2 9663 1412 Mobile : 0418 464 016 -Original Message- From: Stig Jorgensen [mailto:jorgen...@skyskan.com] Sent: 8 December 2000 7:25 To: emc-p...@ieee.org Subject:Risk assessment Hi Group, Dec 07,2000 I am in the process of establishing the potential for an injury from a hazard. I can get a reasonable 'expression' to describe the potential for a hazard to turn into an accident (event). I am looking for the words that classifies the degree of an injury. Can some one direct me to some standard definitions? Do we base it on the length of work stoppage? i.e. a minor burn on a finger tip smarts for an hour or two. A good shock working with vacuum tubes, 300V, slowed you down for the rest of the day and so on. Has some one worked out a practical scale for the degree of an injury. It can be numbers or words as long as they are defined. If it does not exist let us generate one that we all agree on.-- or most of us. When it comes to property damage I think that a monetary replacement cost would be expressed in 'small', 'medium', 'large' etc where each is defined in 'very' general monetary terms. Thank you for your assistance. Sincerely Stig W. Jorgensen jorgen...@skyskan.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org -- CONFIDENTIALITY NOTICE -- This email is intended only to be read or used by the addressee. The information contained in this e-mail message may be confidential information. If you are not the intended recipient, any use, interference with, distribution, disclosure or copying of this material is unauthorised and prohibited. Confidentiality attached to this communication is not waived or lost by reason of the mistaken delivery to you. If you have received this message in error, please delete it and notify us by return e-mail or telephone Aristocrat Technologies Australia Pty Limited on +61 2 9413 6300. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Risk assessment
Hi Stig: I believe you are interested in severity of injury, not potential for injury, or risk of injury. Here is a numerical assignment for severity of injury that I found in my files. I have no idea of its source. 10 Death 9 Long-term or permanent coma 8 Full body paralysis (permanent) 7 Loss of more than one organ or limb 6 Loss of one organ or limb 5 Loss of a function (permanent) 4 Broken bone or tendon 3 Heals with scar 2 Heals with no scare 1 No injury While I can't cite any references, I believe that there ought to be some literature that thoroughly discusses both risk of injury and severity of injury. This isn't a new topic. Best regards, Rich --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
