Within the scope of SEVESO Directive;

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We work at your workplace with our expert staff for Quantitative Risk Assessment service.

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Your Major Accident Scenario Documents  we are preparing.

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If you wish, we can also draw the Layouts and P&IDs of the entire facility and deliver them to you for use in the quantitative risk assessment phase.

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Major accident scenario document

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ARTICLE 8 –  (1) Major accident scenario document is prepared or has it prepared by the operator of the lower and higher level establishments within the scope of this Regulation in order to determine the dangers of major industrial accidents and to evaluate the risks that may arise from these hazards.

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(2) Major accident scenario document, after the identification and classification of dangerous goods in accordance with the definition of dangerous goods in Article 5 of this Regulation, by using one or more of the methods in the national or international standards and generally accepted scientific literature, The major accident scenario document to be issued within the scope of the project is prepared in accordance with the criteria specified in the communiqué and by following the steps below:

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a) Identification of hazardous equipment.

b) Identification of internal hazards through identified hazardous equipment.

c) Identification of external hazards that may originate from outside the organization that may affect hazardous equipment.

ç) Establishing major accident scenarios on dangerous equipment with methods that can produce results suitable for comparison with the major industrial accident frequency value in Article 9 of this Regulation.

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(3) During the determination of internal and external hazards, past accidents, near misses and accessible records in accident data banks are also taken into account.

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(4) Major accident scenario is formed in a way to include all possible spread, fire or explosion events, starting from the root causes determined according to the hazards determined according to the second paragraph. However, in scenarios to be created using a single root cause and effect pair, each of the possible spread, fire and explosion events is taken into account.

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(5) The operator shall provide detailed information about the reliability data and probability data used in the major accident scenario document from which data banks or sources.

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(6) In case the operator becomes a lower or higher level organization due to the change in the type and/or amount of dangerous goods, this document shall be prepared within one year following the date it is included in the scope.

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(7) The operator keeps the prepared major accident scenario document in the establishment.

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(8) The Ministry of Family, Labor and Social Services publishes a communiqué containing the procedures and principles regarding the major accident scenario document.

 

ALARP value of major industrial accident frequency

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ARTICLE 9 –  (1) The operator reduces the frequency of occurrence of each major industrial accident scenario to 1x10-4/year or less, for dangerous equipment that may cause major accidents.

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Major accident scenario document, “ Regulation on Preventing Major Industrial Accidents and Reducing Their Effects ”  After the identification and classification of dangerous goods in accordance with the definition of dangerous goods in Article 5, one or more of the methods in the national or international standards and generally accepted scientific literature are used, and the major accident scenario document to be issued within the scope of the relevant regulation is specified in the communiqué. It is prepared in accordance with the criteria and following the steps below:

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a) Identification of hazardous equipment.
b) Identification of internal hazards through identified hazardous equipment.
c) Identification of external hazards that may originate from outside the organization that may affect hazardous equipment.
ç) Establishing major accident scenarios on dangerous equipment with methods that can produce results suitable for comparison with the major industrial accident frequency value in Article 9 of the Regulation.

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In order to have a detailed idea about Quantitative Risk Assessment and GYS, please review the Article and Blog section.

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