LOTO - Lockout Tagout

LOTO - lockout tagout

LOTO is a common method used by European and American countries in machinery and electrical maintenance to prevent the wrong operation of personnel. It is usually used in the chemical and oil industries at the same time with the license system to avoid safety accidents.


In China, there are few companies that can provide integrated tagout and lockout services, including tagout and lockout procedures, on-site training, lock selection and guidance.


The consulting company needs to have a deep understanding of how the hang-label locking and energy isolation are connected with the existing license system. The engineer should have practical operation and maintenance experience in chemical, mechanical and electrical engineering, and be able to assist the customer in selecting appropriate locks and lock boxes according to the customer's field conditions, and provide on-site guidance for their use.


QRA - quantitative risk analysis

Quantitative risk analysis is the process of quantitative analysis of the impact of identified risks on the company.


The object of quantitative risk analysis is the risk that is considered to have a potentially significant impact on the company in the process of qualitative risk analysis. The process of implementing quantitative risk analysis is a quantitative method to analyze the impact of these risk events and make decisions under uncertain conditions. Through repeated quantitative risk analysis, we can understand the development trend of risk and reveal the necessity of risk management measures.


Comprehensive analysis software includes two-dimensional Leak consequence analysis software Phast, three-dimensional CFD calculation and analysis software FLACS and AutoReaGas, Leak frequency calculation software Leak, personal risk and social risk assessment software Safeti, etc. The database includes equipment failure frequency database, hydrocarbon leakage history failure database (HCRD) and equipment reliability database (OREDA), and based on the actual experience and domestic environment data correction to form a more localized characteristics of equipment failure frequency database.


QRA engineers should have practical experience, including the application in calculating personal risk contour lines and social risk curves, to provide data support for the enterprise to determine the safety protection distance between the hazard source and the external protection target of the plant, so as to determine the safety, compliance, scientific and rationality of the site selection; Verify and optimize plant equipment layout to ensure the safety, compliance, scientificity and rationality of plant planning and equipment layout; Carry out 2d and 3d calculation and analysis on typical leakage and fire accidents of equipment and facilities, determine the quantified risk data, provide risk analysis values, determine the impact scope and region of the accident, and provide data support for the preparation of emergency plan and accident investigation.