Home
|
PROCESS SAFETY MANAGEMENT
_______________________________________________________________________________________ NST/Engineers, Inc. (NST) approaches Process Safety Management (PSM) as the logical extension of the elements of 29CFR1910.119 to include all workplaces. A major element of PSM is Process Hazard Analysis (PHA). Any industrial process has some level of hazard associated with its operation. Such hazards might include worker exposure to the following conditions:
High and Low Temperatures A thoroughly conducted and regularly updated PROCESS HAZARD ANALYSIS will discover the workplace hazards that personnel will potentially encounter while operating any process. __________________________________________________________________________________________ Maintain Process Safety During the Recession, CSB Cautions
__________________________________________________________________________________________ "Anatomy of a Disaster" tells the story of one of the worst industrial accidents in recent U.S. history--the March 23, 2005, explosion at the BP refinery in Texas City, Texas, which killed 15 workers, injured 180 others, and caused billions of dollars in economic losses. The U.S. Chemical Safety Board, an independent federal agency, investigated the accident. The CSB produced this video in March 2008 based on its comprehensive 341-page public report issued in 2007. The video includes a nine-minute animation detailing the events leading up to the blast. It features interviews with members of the CSB investigative team who spent two years studying the causes of the accident. Outside safety experts Prof. Trevor Kletz (Texas A&M University and Loughborough University, UK), Prof. Andrew Hopkins (Australian National University), and Mr. Glenn Erwin (United Steelworkers) provide insightful commentary on the significance of the accident to the world's petrochemical industry. The CSB believes that an understanding of the key findings, recommendations, and lessons from this investigation will help prevent future accidents. To learn more about this and other CSB investigations, please visit CSB.gov.
US Department of Labors OSHA issues record-breaking fines to BP-Oct. 30, 2009 WASHINGTON - The U.S. Department of Labor's Occupational Safety and Health Administration (OSHA) today announced it is issuing $87,430,000 in proposed penalties to BP Products North America Inc. for the company's failure to correct potential hazards faced by employees. The fine is the largest in OSHA's history. The prior largest total penalty, $21 million, was issued in 2005, also against BP. Safety violations at BP's Texas City, Texas, refinery resulted in a massive explosion with 15 deaths and 170 people injured in March of 2005. BP entered into a settlement agreement with OSHA in September of that year, under which the company agreed to corrective actions to eliminate potential hazards similar to those that caused the 2005 tragedy. Today's announcement comes at the conclusion of a six-month inspection by OSHA, designed to evaluate the extent to which BP has complied with its obligations under the 2005 agreement and OSHA standards. "When BP signed the OSHA settlement from the March 2005 explosion, it agreed to take comprehensive action to protect employees. Instead of living up to that commitment, BP has allowed hundreds of potential hazards to continue unabated," said Secretary of Labor Hilda L. Solis. "Fifteen people lost their lives as a result of the 2005 tragedy, and 170 others were injured. An $87 million fine won't restore those lives, but we can't let this happen again. Workplace safety is more than a slogan. It's the law. The U.S. Department of Labor will not tolerate the preventable exposure of workers to hazardous conditions." For noncompliance with the terms of the settlement agreement, the BP Texas City Refinery has been issued 270 "notifications of failure to abate" with fines totaling $56.7 million. Each notification represents a penalty of $7,000 times 30 days, the period that the conditions have remained unabated. OSHA also identified 439 new willful violations for failures to follow industry-accepted controls on the pressure relief safety systems and other process safety management violations with penalties totaling $30.7 million. "BP was given four years to correct the safety issues identified pursuant to the settlement agreement, yet OSHA has found hundreds of violations of the agreement and hundreds of new violations. BP still has a great deal of work to do to assure the safety and health of the employees who work at this refinery," said acting Assistant Secretary of Labor for OSHA Jordan Barab.
__________________________________________________________________________________________ Investigators from the U.S. Chemical Safety Board (CSB) have concluded that an explosion and fire at Catalyst Systems Inc. in Gnadenhutten, Ohio, in January 2003 most likely occurred when 200 pounds of benzoyl peroxide in a vacuum dryer rapidly decomposed. The runaway chemical reaction produced large volumes of gas under high pressure. Investigators have been unable to determine the specific initiating event. The force of the explosion propelled the heavy vacuum dryer like a rocket across the room and through a wall, causing extensive damage to the building, but missing workers eating lunch just 35 feet away in the same room. The operators described thick black smoke with rolling flames and a loud boom. They quickly exited the building. One worker received a puncture wound in his shoulder, most likely from flying debris. CSB Board Chairman Carolyn Merritt said: "The workers were fortunate they were not standing by the vacuum dryer at the time of the explosion. This is another example of the dangers of not recognizing the inherent hazards of materials being handled, not using properly designed equipment, and not performing hazard identification studies." The purpose of the process was to concentrate benzoyl peroxide, or BPO, to 98 percent by drying it. In this form BPO is the consistency of beach sand, and can decompose explosively when overheated. BPO is used to make a number of products, including plastics, silicone rubber, and automobile body putty. The process, involving a highly reactive material, was not sufficiently evaluated by management, the study said, adding that Catalyst Systems had no program to formally take the hazards, generally well known in the industry, into account in the design of the dryer. The study found the dryer had been purchased second-hand, with no wiring diagram or engineering drawings. No written operating procedures were developed for drying the chemical. Only verbal instructions were provided operators. The case study says, "Catalyst Systems did not have a process safety management program in place, nor were employees trained in use of these systems." While not determining the specific initiating event of the explosion, the study listed several probable sources. These included failure of a temperature probe, a hot spot in the dryer, failure of the vacuum pump, and leaving the chemical in the dryer too long. The U.S. Chemical Safety Board (CSB) has released detailed information on the 167 serious chemical incidents analyzed in the agency’s landmark 2002 study on REACTIVE HAZARDS. The incidents covered are fires, explosions, toxic gas releases or other events where uncontrolled chemical reactions resulted in deaths, injuries, or damage, or had the potential to do so. All the incidents occurred in the U.S. between 1980 and 2001; together they were responsible for 108 deaths and numerous injuries. CSB has approved 18 safety recommendations intended to reduce the number and severity of reactive incidents. Among the 18 recommendations, the Board called on the U.S. Occupational Safety and Health Administration (OSHA) and the U.S. Environmental Protection Agency (EPA) to extend their process safety regulations -- known as the Process Safety Management standard and the Risk Management Program, rule -- to better control hazards associated with chemical reactivity. __________________________________________________________________________________________
The January 2003 deadly fire at an oilfield
waste disposal facility south of Houston could have been avoided if the
companies involved had safer procedures for handling flammable wastes,
investigators from the U.S. Chemical Safety and Hazard Investigation Board (CSB)
have reported.
The January 13 accident in Rosharon, Texas, occurred as two tank trucks unloaded
waste liquids into an open collection pit at the BLSR Operating Ltd. disposal
facility. Unknown to either the drivers or BLSR personnel, the waste material
was highly volatile, and a flammable vapor cloud formed in the unloading area.
Vapor was drawn into the air intakes of the trucks’ running diesel engines --
causing them to race and backfire. The flammable cloud ignited.
Two BLSR employees standing near the trucks were killed in the fire, and three others
suffered serious burns. The two drivers, who were employed by T and L
Environmental Services Inc., were also burned after rushing back to their trucks
when they heard the engines accelerate. One of the drivers died several weeks
later from his injuries.
CSB said two root causes that led to the tragedy. First, the producer of the waste,
Noble Energy, did not recognize
its potential flammability nor did it provide appropriate safety information to
either T and L or BLSR. This liquid waste, referred to as basic sediment and
water, or BS and W, settles to the bottom of storage tanks that contain either
crude oil or the liquid hydrocarbons that condense from natural gas (gas
condensate).
BS and W is commonly sent to deep-well injection sites for
disposal. But the material can contain significant quantities of flammable
hydrocarbons. When tested, most samples of BS and W obtained by Board
investigators were found to be highly flammable, including material from the
Noble Energy storage tanks involved in the incident.
Material Safety Data Sheets (MSDS) -- documents required by OSHA, that describe
materials and hazards in
detail -- should have been prepared by the waste producer and provided to the
truck drivers and the disposal facility operators.
The second root cause of the accident was that BLSR management did not have safe
unloading and handling practices for potentially flammable BS and W wastes. Not
recognizing the hazards of the material, the company did not control potential
ignition sources or use unloading techniques designed to minimize vapor
formation.
__________________________________________________________________________________________
CSB Investigators Cite Lack of Effective Management Systems in December 2002 Hydrogen Sulfide
Incident at Cincinnati Waste Disposal Plant.
A release of potentially deadly hydrogen
sulfide (H2S) at the Environmental Enterprises Inc. (EEI) waste treatment
facility in Cincinnati, Ohio, resulted from treating chemical wastes in an
inappropriate vessel, according to investigators from U.S. Chemical Safety and
Hazard Investigation Board (CSB).
A maintenance worker collapsed after he walked near the waste vessel
and inhaled toxic hydrogen sulfide, which carries a signature rotten egg odor.
Inhaling the gas can cause accumulation of fluid in the lungs and respiratory
arrest. The victim, who was initially unable to breathe, was treated at a local
hospital and released.
Environmental Enterprises had not adequately trained its employees on the
hazards of hydrogen sulfide, according to CSB investigator Johnnie Banks.
Therefore the employees did not recognize the rotten egg odor as a sign of
imminent danger.
EEI treats water-based hazardous waste containing various contaminants,
including heavy metals, for disposal. CSB investigators said the hydrogen
sulfide release occurred after an operator added solid sodium sulfide to a batch
of waste in an effort to remove mercury. Later the same operator added an
acidic chemical (polyaluminum chloride) to adjust the pH of the waste.
Unknown to the operator, excess sodium sulfide reacted with the acidic chemical
to form hydrogen sulfide gas, which was released from the open-top clarifier
vessel where the treatment was attempted. Later the maintenance worker entered
the treatment area, which was then unattended, to retrieve a tool when he was
overcome by the gas. The clarifier was not designed to handle the possibility
of toxic gas formation and had no equipment to collect and treat such gases.
"This is the second serious incident we have investigated recently where the
reaction of a sulfide salt with acid produced a dangerous gas release,"
according to CSB Chairman Carolyn W. Merritt. In November 2002 the Board
completed its investigation of an incident at an Alabama paper mill where two
workers were killed and eight others injured when a similar reaction in a
process sewer caused a release of hydrogen sulfide gas. “Clearly there is a
strong need for greater awareness of the hazards of reactive sulfides,” Merritt
said.
A hydrogen sulfide warning device, installed under provisions of a
city order, was not working at the time of the December 11 incident.
__________________________________________________________________________________________
U.S. Chemical Safety Board Approves Findings and Recommendations in Aftermath of July 2001 Motiva Refinery Sulfuric Acid Tank Farm Disaster, Fatal Fire and HAZMAT Leak!
Contractor employee Jeffrey Davis, 50, was killed in the explosion. His body was never
recovered. Eight other workers were injured when a spark from carbon-arc welding equipment
ignited flammable vapors in a 415,000-gallon sulfuric acid storage tank at the refinery.
The surrounding sulfuric acid tank farm was heavily damaged in the blast, and an estimated
1.1 million gallons of the powerful corrosive were ultimately released to the environment,
including nearly 100,000 gallons that flowed into the nearby Delaware River.
A significant fish kill occurred there.
The CSB investigation found significant deficiencies in Motiva's mechanical integrity
program. If effective, this program should have prevented the extensive corrosion damage
that was evident in several tanks at the farm. Some of the tanks contained thousands of
pounds of flammable hydrocarbons in addition to the corrosive sulfuric acid.
According to CSB lead investigator David Heller, "Motiva did not act to prevent hot work
- high-temperature cutting that could generate molten metal and sparks - from being
performed directly above a corroded hazardous storage tank that had holes in its roof
and shell and was known to contain flammable vapors."
The Board found that the incident likely would have been prevented if good safety management
processes had been adequately implemented at the refinery. Investigators found Motiva did
not consider the tank farm to be covered by the requirements of the OSHA Process Safety
Management Standard, which sets safety standards for various chemical operations.
The refinery's sulfuric acid tanks had a history of leaks. But Motiva took no effective
action, even when its own tank inspectors recommended full internal inspections
"as soon as possible" in three successive annual reports prior to the explosion.
Three weeks before the explosion, an operator submitted a formal Unsafe Condition Report
noting holes in two tanks and pointing out that the hose used to blanket the tank with
nonflammable carbon dioxide was improperly installed.
The Board found Motiva investigated the Unsafe Condition Report but took no action to
correct the deficiencies.
Motiva Enterprises is a joint venture of Saudi Refining Co. and Shell Oil.
Elias was convicted of sending workers to clean out mining waste in a tank that contained cyanide compounds. This was after the workers had complained of health problems from being in the tank. Elias had also been frequently warned by OSHA about the dangers of cyanide in the waste tank.
__________________________________________________________________________________________
The Mary Kay O'Connor Process Safety Center at Texas A&M University
This process safety resource, located at College Station, Texas is named in the memory of
a chemical engineer who died in the line of duty. She was killed, along with 22 others
in the October 1989 explosion at a Phillips 66 chemical plant near Houston. Also, there
were 130 injuries in the incident. Ethylene and isobutane leaked from a pipeline and
ignited. Mrs. O'Connor was operations superintendent with responsibility for the plant's
day-to-day operations.
The O'Connor family received a settlement from Phillips and her husband directed that
the proceeds from a $4 million portion of the settlement be used to support a process
safety research and teaching program at Texas A&M. Texas A&M's R&D funding is second
only to that of MIT in the U.S. Michael O'Connor, Mary Kay's husband, also a chemical
engineer, serves on the center's Steering, Technical, and Executive Committees.
For a fee-based consultation call with a Licensed Professional Engineer between 3:00pm and 5:00pm Eastern Daylight Time, call (302) 239-2700.
For information at any time on our Hazardous Waste Operations and Emergency Response
(HAZWOPER) and other safety training, click here.
|