October 28, 2021

Employee Location Monitoring in a Post-Pandemic World

Employee Location Monitoring in a Post-Pandemic World: The COVID-19 pandemic has unearthed a number of challenges for power plant managers. However, technology exists to keep workers safe. Through the use of Location Anchors and WirelessHART infrastructure

October 24, 2021

Improving Asset Inspections with Drones and AI

Improving Asset Inspections with Drones and AI: The U.S. bulk electric system has more than 360,000 miles of transmission lines, which means power companies have a lot to inspect. Drones and AI can help.

October 20, 2021

Flame-Resistant Clothing: Everything You Need to Know

Flame-Resistant Clothing: Everything You Need to Know: Flame-resistant (FR) garments are an important safety item for workers in the power industry. However, protection varies based on the arc rating of the clothing. Wearers must understand how the FR clothing

October 16, 2021

Protecting Battery Energy Storage Systems from Fire and Explosion Hazards

Protecting Battery Energy Storage Systems from Fire and Explosion Hazards: There are serious risks associated with lithium-ion battery energy storage systems. Thermal runaway can release toxic and explosive gases, and the problem can spread from one malfunctioning cell to neighboring cells, resulting in catastrophe.

October 12, 2021

Preventing and Mitigating Oil Fires in Power Plants

Preventing and Mitigating Oil Fires in Power Plants: It has been said that a picture is worth a thousand words. However, photos of the conflagrations that have resulted from ignition of minor lube oil leaks on a typical steam turbine room floor will leave you speechless. Full-scale physical simulations of oil fires by the insurance company FM Global leave no doubt that power plant fire prevention and mitigation is a judicious blend of art and science.

October 8, 2021

Does your safety observation system create victims, villains?

Does your safety observation system create victims, villains?: Chances are you have a behavior-based safety (BBS) process in place for all of your projects. And the reason you have that BBS process to begin with is to reduce accidents.

October 4, 2021

FATALITY DUE TO EXPLOSION IN NITRIC ACID TANK

 A small steel process tank was filled with multiple metal baskets of tantalum capacitors cooked overnight in hot nitric acid. The hot nitric acid was used to remove some of the epoxy resin encapsulant from a tantalum anode. The nitric acid was drained each morning after the capacitors were cooked. The baskets of cooked capacitors were removed and rinsed in water. Mostly tantalum anodes remained. Employee #1 was killed and five other employees were seriously injured as a residue, containing picric acid, exploded, when Employee #1 placed a basket back into the drained tank, presumably to remove more encapsulant. Picric acid (trinitrophenol), and possibly other unstable nitrated compounds, formed in a nitration reaction between nitric acid and the bisphenol moiety of the epoxy resin. These nitrated compounds precipitated out of the nitric acid solution. Over time, as the spent nitric acid was drained from the tank after each batch, the precipitated nitrated compounds would accumulate on the inside surface of the tank. The spent nitric acid was typically used for multiple batches further concentrating unstable nitrated compounds on the tank's surface. Placement of the basket was likely the source of ignition. The explosion was estimated to be of a magnitude similar to an explosion involving more than 5 pounds of trinitrotoluene. The five seriously injured employees were treated for burns and bruises at a local hospital. 

 Source:OSHA.gov

September 30, 2021

September 6, 2021

Employee Inhales Toxic Gas, Later Dies

At 6:15 a.m. on May 22, 2020, an employee and a coworker were in the process of transferring chemicals from totes on a delivery truck into tanks inside the facility. The employee was responsible for hooking up the hose to the fill line on the building and monitoring the transfer from inside the facility. The coworker was responsible for hooking up the hose to the pump and tote inside the truck. The employee accidentally hooked up the bleach hose to the fluoride fill line, causing a reaction when the chemicals mixed. A toxic gas, presumably chlorine, was given off and the employee inhaled the gas. The employee was hospitalized from t he inhalation of the toxic gas, and died from the injury.  

Source:OSHA.gov

September 2, 2021

Two Employees Receive Corrosive Burns From Sanitizing

 At 12:00 p.m. on April 19, 2019, Employee #1 and Employee #2 were observing a food establishment's sanitation and cleaning process during an investigation. During the observations of the employees and processes, they used a foaming cleanser, quaternary ammonium, and a spot acid clear for cleaning and sanitizing. A pun gent smell believed to be chlorine was being released into the air. Employees #1 and #2 noted that their eyes, skin, and mucosal linings of the mouth, throat, and nose were irritated and burning. Employee #2 measured the quaternary ammonium solution, and it was found to be in excess of 200 PPM, which is higher than recommended levels. Hospitalization was not required. 

 Source:OSHA.gov

August 28, 2021

Steam cap failure incident

 At 8:12 a.m. on November 13, 2020, Employee #1 and a coworker, employed by an HV AC company, were repairing a steam piping system leak in the mechanical room of a medical care campus building. The employees did not utilize a lockout and/or tagout device. Following the repair, as the steam line was being re-energized, a threaded drip cap at the bottom of the vertical steam pipe riser apparently failed. The room immediately filled with pressurized steam. The interior door was in the closed position, and the employees were unable to exit the room. Employee #1 was killed. 

Source:Osha.gov

August 16, 2021

 The employees were charging a furnace for an alloy melt. Employee #1 had just placed the final two pigs on the lip of the furnace door and had backed his lift truck at an angle to a distance of 15 feet from the furnace. Employee #3 had previously pushed seven pigs into the furnace. As he pushed the final two pigs into the furnace, there were two separate explosions inside the furnace. The first explosion caused a wave of molten metal to flow over the open furnace sill outward to a distance of 40 feet. The second explosion caused a fan shaped flame that extended out 80 feet from the furnace. The flame touched the left front of Employee #1's lift truck and completely engulfed Employee #3's lift truck (located 30 feet directly in front of the furnace). Employee #2 was standing behind Employee #1's lift truck. All three employees were burned. Employee #3 died of his injuries. Water pockets inside the pigs apparently caused the explosions.

 Source: osha.gov

August 12, 2021

 Top Ten Boiler and Combustion Safety Issues to Avoid

 John R. Puskar, P.E.
Principal and Owner of CEC Combustion Services Group

Category: Operations

Summary: This article was originally published in the Summer 2010 National Board BULLETIN.

 https://www.nationalboard.org/Index.aspx?pageID=164&ID=439