DEVELOPMENT OF THE MONITORING (CONTROL) PROGRAM OF THE SAFETY OF NUCLEAR POWER PLANTS

Nuclear power plants (NPP), being complex technological systems, represent a source of increased risk, in particular, a specific risk of radiation exposure. Obtaining quantitative assessments of radiation risk is critical for risk reduction and accident prevention. Existing methods for assessing radiation risk do not take into account the influence of external factors, such as population composition, geographical features, anthropogenic environmental changes, etc.[1]. Since 1997, in connection with changes in the norms and rules in the field of the use of atomic energy, it became necessary to perform a probabilistic safety analysis (PSA) at all nuclear power plants in Russia. Subsequently, a standard safety data sheet for a hazardous facility was developed. To fill out the second section of the safety data sheet, it is necessary to carry out a risk assessment of the objects in question. From this moment on, risk assessments were performed for all power units of all operating nuclear power plants in Russia. Today, in our country there are 14 nuclear power plants. On average, there are 3 power units per nuclear power plant. In order to systematize and centralize data on NPP risk assessments, it became necessary to develop a program for monitoring NPP safety. The aim of the work is to develop a monitoring (control) program for ensuring the safety of nuclear power plants, using modern technologies to systematize and group data on nuclear safety data sheets, as well as organize quick access to information.

A decision model for selecting a safety data sheet management system using fuzzy TOPSIS

Purpose Safety data sheets are documents developed by chemical manufacturers to identify and label hazardous materials. The occupational safety and health administration regulations state that employers must make safety data sheets available for employees. When firms use hundreds of chemicals, tracking their safety data sheets becomes difficult. Safety Data Sheet Management Systems are developed to track safety data sheets. This paper aims to propose a multi-attribute decision-making framework for selecting a Safety Data Sheet Management System. Design/methodology/approach A total of 12 attributes are proposed based on a real-life project conducted at a firm in New York and the software selection models existed in the literature. Fuzzy technique for order of preference by similarity to ideal solution is used to assess the proposed attributes and alternatives. A case study and sensitivity analysis are conducted to show the robustness of the proposed model. Fuzzy analytical hierarchy process is used for validation. Findings Safety Data Sheet Management System is important for firms to track and manage safety data sheets. The proposed framework is practical and easy to implement. Practical implications The proposed decision model is useful for firms to select a proper Safety Data Sheet Management System. The system developers can use the model to update their systems. Originality/value This paper develops a new multi-attribute decision-making model for selecting a Safety Data Sheet Management System. To the best of the authors’ knowledge, no previous study has developed such a model.

Assessing respiratory exposure to harmful evaporations in a manufacturing company

Introduction: Using Hypochlorite Sodium in producing bleaches in order to disinfect and shine surfaces has been an ordinary method since 200 years ago. 10-15% solutions with PH=13 have been used for industrial purposes and 5% solutions with PH=11 have been used for domestic use. AIHA (American Industrial Hygienists Association) has announced the maximum standard exposure to this substance equal to 2mg/m3 in a period of 15 minutes. It should be noted that, based on material safety data sheet and NFPA rating explanation guide, the mentioned substance is mildly unstable (code 1), carries oxidation hazard (ox), and serious respiratory hazard (code 3). Methods: This survey has been conducted with statistical society of 39, average age of 29.82±3.66 and work experience of 2.46±6.02 who were exposed to Hypochlorite Sodium in 2019. The reference of analyzing the data include medical check-up inventory, spirometry FEV1, FVC, and FEV1/FVC relativity, using SPSS ver16, and T-test. Results: The statistical society (39 participants) had a normal distribution, with a very pleasant correlation amounts in (FEV1/FVC, FVC, FEV1) considering sig=0.13, andless possibility than (P≤0.05). therefore, the amounts before and after FEV1, and FEV1/FVC, had a meaningful difference statistically, however, taking the amount of sig=0.68 into account which was P≤0.05, no meaningful difference was observed for FVC amounts before and after respiratory exposure to Hypochlorite Sodium. Conclusion: Considering the reduction in amount of FEV1, and FEV1/FVC among the workers of the manufacturing site who were exposed to Hypochlorite Sodium, they are likely to have pulmonary obstruction, and therefore they are required to be changed in position and location of their jobs, and also appropriate ventilation system must be installed in the location of Hypochlorite Sodium evaporations. Keeping in mind the instability and corrosiveness of Hypochlorite Sodium, all employees had better use respiratory masks (preferably FFP3 in case of dusty materials), proper face shields, anti-acid gloves, anti-acid overalls, and chemical resistant boots. Keywords: Respiratory exposure assessment, Occupational Asthma, Hypochlorite Sodium, Bleach, FEV1, FVC, FEV1/FVC, CANCER.

ANALISIS SENYAWA BERBAHAYA PARFUM ISI ULANG YANG DIJUAL DI KOTA PADANG MENGGUNAKAN METODE KROMATROGRAFI GAS-SPEKTROMETRI MASSA

Perfume is widely used by most of people in this world. The increasing demand of perfume has caused many producers cheating by adding dangerous compounds and also unregistered by the National Agency of Drug and Food Control Indonesia. The aim of this study is to analyze the dangerous compounds in unregistered perfumes sold in Pasar Raya Padang City by using gas chromatography-mass spectrometry (GC-MS) method. In this Study, samples (A, B, C, D and E) were collected and the value of specific weight and refractive index of the samples were analyzed. The results showed that five samples contained relatively similar chemical compounds. Twelve compounds were detected and seven of them were harmful to health in refill perfumes which were dipropylene glycol, linalool, lily aldehyde, benzenepentanol, dimethylbenzyl carbinyl acetate, dihydro methyl jasmonate, alpha hexyl cinnamic aldehyde, based on Material Safety Data Sheet (MSDS). Regular monitoring of chemicals used in the manufacture of perfumes which may cause health risks to users should be controlled by National Agency of Drug and Food Control Indonesia.