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Now showing items 351-360 of 429
CFD Modeling of LNG Flammable Vapor Cloud Dispersion
(Mary Kay O'Connor Process Safety Center, 2017)
The simulation of LNG flammable vapor cloud dispersion plays a key role in the safe design of LNG terminals and other facilities. With large scale and often complex release scenarios, the scope for model testing is limited ...
A Strategy Based on Aspen Plus for Venting and Leaks from Vessels
(Mary Kay O'Connor Process Safety Center, 2017)
Severe accidents have occurred when vessels release their contained material either accidentally or intentionally to prevent further catastrophic accidents. Several models have been developed to deal with simulating these ...
Impact of the 70% Rule on Interlock Design
(Mary Kay O'Connor Process Safety Center, 2017)
The IEC 61511 standard requires a verification calculation that a proposed design for a safety instrumented function (SIF) achieves the desired safety integrity level (SIL). The evaluation of the safety integrity level of ...
Adapting cause and effects methodology to your Safety instrumented system (SIS) to reduce human errors from engineering, operations and beyond
(Mary Kay O'Connor Process Safety Center, 2017)
A safety instrumented system (SIS) is used to implement one or more Safety Instrumented Functions (SIFs) which are designed to reduce the likelihood of hazardous risk by decreasing the frequency of unwanted events (accidents). ...
Prediction of NH4NO3 thermal decomposition parameters in the presence of two additives using the single additive experimental values
(Mary Kay O'Connor Process Safety Center, 2017)
NH4NO3 thermal decomposition rate is significantly affected by the presence of additives such as Na2SO4 (an inhibitor) or KCl (a promoter). The presence of Na2SO4 increases substantially the decomposition “onset” temperature ...
The Gibson Winery Ammonia Fatality: September 21, 2012 The Result of "Let Them Die" Policies and PRofessionalization of Rescue
(Mary Kay O'Connor Process Safety Center, 2017)
On 2012, a young man was killed when he was trapped in a bathroom during an outdoor ammonia release at a winery in Sanger, California. What killed him was inhalation of anhydrous ammonia vapors. The vapor was released when ...
Erosive Life Calculator for Production Choke Valves on Offshore Platforms to Prevent Catastrophic Failure
(Mary Kay O'Connor Process Safety Center, 2017)
Production choke valves on offshore oil and gas production platforms are critical piece of equipment. If the choke valves are not operated and maintained properly, it can fail catastrophically due to erosion, posing high ...
The Challenges and Successes in Safety and Environmental Management System (SEMS) Approaches to Offshore Operations
(Mary Kay O'Connor Process Safety Center, 2015)
Using management systems to improve the quality of products and of operations has been a common practice for 30 years. While management systems started out as industry-led, voluntary efforts, they are now often required ...
Comparison of Methods to Determine Maritime Safety Zones for LNG Terminals
(Mary Kay O'Connor Process Safety Center, 2015)
A Maritime Safety Zone is defined by the U.S. Coast Guard as a water area, shore area, or water and shore area combined to which, for safety or environmental purposes, access is limited to authorized persons, vehicles, or ...
Effect of Moisture Content on Dust-Layer Dispersion Behind a Moving Shock Wave
(Mary Kay O'Connor Process Safety Center, 2015)
Secondary dust explosions in coal mines or industrial settings are known to cause greater catastrophic hazards than the coupled primary explosions themselves. The shock waves produced during a primary explosion, which are ...