Riskanalys av Gävle rangerbangårds verksamhet
Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
The purpose of this report was to conduct a risk analysis of the confined accidents that can cause serious damage to people on the marshalling yard in Gävle. The risks are assessed for the staff at the marshalling yard and the population in the marshalling yards environment. The marshalling yard in Gävle is classified as a hazardous activity according to the Law (SFS 2003:778) of protection against accidents, because of the handling of hazardous substances in the area. On the marshalling yard train arrives and departs and wagons is shunted, which means that they are sorted. Eight percent of the wagons handled on the marshalling yard contains hazardous substances. The most frequent substance is flammable liquid which represents almost 80 percent of the hazardous substances. Other frequent substances on the marshalling yard included in this analysis are flammable gas, toxic gas and oxidizing substances. Managers on a hazardous activity are required to make a risk analysis of accidents that can cause serious damage to people and environment. The analysis needs to be updated every five years. The report conducts on an analysis of a number of incidents identified though a What-if analysis with help from expert staff. The risk is based on an appraisal of the incidents frequency and consequence. The calculation of the incidents frequency is based on statistics of accidents from Trafikverket and values from literature. The estimate of the consequences of ignition of flammable liquid is made after calculations of incident radiation. Simulations in a computer program have been the basis to estimate the consequences of a release of toxic gas. For the remaining incidents estimates have been made based on results from previous risk analyses and the literature study. The risk has then been evaluated, for the population in the environment based on an F/N chart with recommended criteria developed by SRV and for the staff based on a risk matrix developed by Kemikontoret. The analysis shows that unauthorized persons in the railroad on the marshalling yard are an unacceptably high risk and collision and derailment an unacceptably high risk to staff based on the selected risk criteria. Risks that is medium high to staff and populations in the environment and inadequate procedures in Trafikverket´s risk management process is also identified in the analysis. To decrease the risks in the marshalling yard a number of actions have been developed as a recommendation. Some of the recommended actions are that the perimeter protection around the marshalling yard should be improved, a review of the possibility to change the placement of the allotment is made and the signaling to one turnout are developed. The analysis shows that consequences of a collision or derailment on the marshalling yard in Gävle are lower than what has been described in the literature study. If the recommended actions are implemented and the risk is reduced is it considered that the marshalling yard in Gävle constitutes an acceptable level of risk.
Place, publisher, year, edition, pages
2013. , 83 p.
Social Behaviour Law
Samhälls-, beteendevetenskap, juridik, Riskanalys, Gävle, rangerbangård, transport av farlig gods, farligt gods
IdentifiersURN: urn:nbn:se:ltu:diva-57246Local ID: deed61ea-b25c-402d-97ff-8d1ce2d4e8e8OAI: oai:DiVA.org:ltu-57246DiVA: diva2:1030633
Subject / course
Student thesis, at least 15 credits
Fire Protection Engineer, bachelor's level
Validerat; 20130424 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved