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  1. Wolfram

    refineries' plant inspection

    Some usefull inspection standards are 1. API 580 Risk-based inspection 2. API 581 Risk-based inspection Base Resource Document and not a standard but excellent report about this issue 3. HSE Contract Research Report 363/2001 Best Practice for Risk Based Inspection ... Have fun.
  2. Wolfram

    HAZOP & gross negilgence

    John since 2 decades I work as a risk consultant for the oil&gas industry and never ever a client or authority requested to include acts of gross negligence into a HAZOP. I agree fully with the arguments of Guidoo that the inclusion of negligence and terrorism is another topic and should be...
  3. Wolfram

    Consideration of Human Error in Risk Assessment

    azertyuiop we already delivered a QRA for a Belgium offshore windpark project. The Belgium authorities are very pragmatic and professional. There is no problem with the consideration of human errors in risk assessment. Regards Wolfram
  4. Wolfram

    Consideration of Human Error in Risk Assessment

    Hamish Hamish you are right my remark about owg's pointer was uncalled and I am sorry about that. I agree with you that it is time now to come to an end. Looking back to all the tips I have received during the last days I say thank you very much to all the one's who tried to help me. Nearly...
  5. Wolfram

    Consideration of Human Error in Risk Assessment

    curryhydrocarbons I am not sure whether your tip with a more or less vague statement about the list of reference is a help or a burden.
  6. Wolfram

    Consideration of Human Error in Risk Assessment

    Hamish thank you for the given reference of UK MCGA but the requirements/recommendations of this authority are very similar to the one already published by the Dutch and German authorities. I have never said that it is my responsibility or task to perform a HF assessment for all ships passing...
  7. Wolfram

    Consideration of Human Error in Risk Assessment

    Hamish if you are dealing with risk assessments for offshore installations it is worldwide common practice to consider the shipping traffic around the offshore installation (please look at www.standard.no/standard/NORSOK_standards/2169/Z-013.pdf which is one of the best standards for marine...
  8. Wolfram

    Consideration of Human Error in Risk Assessment

    Hamish all the time fascinating how you get the references. The publication from Mr. Koester (Danish Maritime Institute) is an excellent publication about categorization of human error in marine industry. Furthermore it describes quite plain the problems of understanding and analysing human...
  9. Wolfram

    Consideration of Human Error in Risk Assessment

    owg if you reed the first publications about human error reliability or human error analysis (e.g. NUREG handbook about Human Error Analysis or the publications from Hunns and Daniels) you may find the indication that all human error rates were collected and analysed by the participation of...
  10. Wolfram

    Consideration of Human Error in Risk Assessment

    JOM it is planned that for each offshore windpark the owner has to provide a permanently manned vessel traffic control and monitoring centre which is equipped with radar, AIS and VHF/UHF radio. The control centre will also be able to control and monitor remotely each turbine of the windpark...
  11. Wolfram

    Consideration of Human Error in Risk Assessment

    Hamish I assess the risk of an offshore windfarm (German Bight, area approx. 200 square kilometer, 214 wind turbines, each wind turbine is approx. 120 m high and the diameter of the pylon is approx. 10-15 m) which is more or less close to a lot of shipping lanes (approx 35000 passing ships per...
  12. Wolfram

    Consideration of Human Error in Risk Assessment

    Hamish your remarks are superb and I will follow your recommendations as much as possible. But how to apply HEART or THERP for all the ships (ships with individual bridge design, equipment standard, crew standard etc) passing the offshore windpark and how to get reliable data (probability or...
  13. Wolfram

    Consideration of Human Error in Risk Assessment

    Hamish O.K. let's talk about violations instead of negligence. Your statements how this issue is handled in a UK safety case are very helpful for me. Also I will try to get the briefing notes of IP and the thesis of Williams for further evaluation. The requirements of the German authorities are...
  14. Wolfram

    Consideration of Human Error in Risk Assessment

    owg it is well known in marine industry that the primary cause for marine accidents is human error. International literature and data base allocate 60 - 80 % to this type of failure. Still the question remains, how is human error handled in QRA within chemical and petrochemical industry and is...
  15. Wolfram

    Consideration of Human Error in Risk Assessment

    John ATSB has an excellent website about the investigation of shipping accidents and some of them reveal negligent or gross negligent actions of the ship management(as mentioned in your response). But I could not find statistics on their website in which they indicate the share of negligent or...
  16. Wolfram

    Consideration of Human Error in Risk Assessment

    IRstuff could be difficult to apply human error data of truckers to the management of ships or operators of vessel traffic control centres. But the figures given in the US crash profile are better than nothing and a first approach to get a feeling about the share of negligence and gross...
  17. Wolfram

    Consideration of Human Error in Risk Assessment

    25362 I asked JBF Associates about the article from Wm. Bridges. They will send me the article but they also informed me that the contents of this article will not be helpful for my problem.
  18. Wolfram

    Consideration of Human Error in Risk Assessment

    MarkkraM your probability figures are very similar to the ones we already use in our QRA for offshore windparks. But they are only applicable for "normal" operator error. My problem still remains because German authorities require the quantification of human errors caused by negligence...
  19. Wolfram

    Consideration of Human Error in Risk Assessment

    OlumideAdeoye, how is possible to quantify (frequency of event or probability figure) intentional sabotage? 25362 is the given reference accessible in the internet? Or do you know how to get it in Germany. Please do not recommend to subscribe the magazin.
  20. Wolfram

    Consideration of Human Error in Risk Assessment

    Hamish excellent help the publication from HSE. By the way I agree in total with your remarks about human error in risk assessment. Regards Wolfram

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