Liquefied natural gas facilities contain enormous quantities of combustible material, complex processing equipment, pressurized piping, electrical systems, and potential ignition sources. When natural gas escapes containment and reaches the right conditions, a relatively localized equipment problem can develop into a major fire or explosion.
Workers may be exposed to blast forces, extreme heat, burning gases, flying debris, collapsing structures, smoke, and secondary fires. An LNG plant explosion can injure employees working directly with the failed equipment as well as contractors and other workers performing unrelated jobs elsewhere in the facility.
An LNG plant explosion lawyer investigating a serious incident may need to determine where the release originated, why the gas escaped, how long the dangerous condition existed, what ignited the gas, and whether safety systems operated as intended.
Explosions are only one of the hazards that can cause an LNG plant accident. However, because LNG facilities process large volumes of natural gas and rely on interconnected equipment, failures involving containment and ignition can have catastrophic consequences.
How Can an LNG Plant Explosion Occur?
An explosion generally requires more than the mere presence of LNG or natural gas.
The material must first escape from the equipment or system intended to contain it. The released gas must then reach conditions capable of supporting combustion, and an ignition source must be present.
A serious LNG fire or explosion can therefore begin with something that initially appears to be an equipment or maintenance problem.
Potential causes may include:
- leaking valves, flanges, seals, or piping;
- failures involving compressors, pumps, or pressure vessels;
- corrosion or deterioration of process equipment;
- defective components;
- improper installation or repair work;
- inadequate inspection or maintenance;
- overpressurization;
- failures of instrumentation or control systems;
- errors during startup, shutdown, or commissioning;
- improper isolation during maintenance;
- welding, cutting, grinding, or other ignition sources near flammable gas; and
- failures to detect or respond to an ongoing release.
A complete investigation should not stop at identifying the component that failed. It should also examine why the failure occurred and whether earlier action could have prevented the release.
Natural Gas Releases and Vapor Clouds
Natural gas does not necessarily ignite immediately after it escapes.
Depending on the circumstances, released gas may disperse through the surrounding area before reaching an ignition source. That can create an especially dangerous situation because workers may be exposed to a flammable atmosphere extending beyond the location of the original leak.
If the gas later ignites, flames can move rapidly through the combustible mixture.
A flash fire can expose workers throughout the affected area to intense thermal energy even when the fire itself lasts only a short period.
Other incidents may involve pressure effects or secondary explosions depending on where the gas accumulates and what structures or equipment surround it.
An LNG plant explosion attorney investigating a vapor-cloud incident may need to examine gas-detection systems, alarm histories, wind and ventilation conditions, process data, emergency shutdown functions, and the location of potential ignition sources.
Why Loss of Containment Matters
Preventing natural gas from escaping process equipment is one of the most important protections against LNG plant fires and explosions.
Pipes, valves, pumps, compressors, flanges, seals, vessels, and related equipment are intended to keep hazardous materials contained. When those systems fail, workers may suddenly be exposed to conditions that did not exist moments earlier.
Loss of containment can result from equipment deterioration over time, but it can also occur because of improper assembly, defective parts, poor maintenance, operational errors, or damage during other work.
A leaking flange may seem minor until the released gas reaches an ignition source. A valve that does not fully isolate a line can become dangerous when workers begin opening equipment that they believe is depressurized. For that reason, an investigation into an LNG explosion should often examine the entire history of the failed system rather than only its condition after the incident.
Maintenance records, inspection documents, prior leaks, repair history, alarm data, and previous reports of equipment problems may all become important.
Pressure and Equipment Failures
LNG facilities contain numerous systems operating under pressure.
Compressors, pipelines, valves, pressure vessels, pumps, and process equipment can contain significant stored energy. A sudden rupture may violently release gas, liquids, or equipment components.
Workers near the failure may suffer impact injuries before any fire occurs. If the released material then ignites, the same incident can produce both mechanical trauma and severe burns.
Pressure-related accidents can also involve testing and commissioning. New piping and equipment may undergo pneumatic or hydrostatic testing before entering service. Improperly secured fittings, plugs, caps, hoses, or other components can fail under pressure.
An LNG plant explosion lawyer may need assistance from engineers and other technical specialists to determine whether equipment was properly designed, installed, inspected, maintained, and operated.
Ignition Sources Inside an LNG Facility
A natural gas release becomes considerably more dangerous when an ignition source is nearby.
Industrial facilities contain many potential sources of heat, sparks, or electrical energy. Depending on the circumstances, ignition could potentially involve electrical equipment, vehicles, machinery, hot surfaces, static electricity, or construction and maintenance activities.
Hot work presents a particularly recognizable risk.
Welding, cutting, brazing, and grinding can generate heat and sparks capable of igniting combustible materials. Before this type of work begins, the surrounding area should be evaluated and appropriate safeguards implemented.
A hot work permit can help identify the work being performed, the surrounding hazards, required atmospheric testing, fire protection measures, and other precautions.
The existence of paperwork alone, however, does not make an operation safe. Conditions can change. A nearby process can begin leaking. Equipment can be opened. Gas can migrate from another location.
Effective hot-work safety requires continued attention to the actual conditions where the work is taking place.
Electrical Equipment Can Become an Ignition Hazard
LNG plants depend on substantial electrical infrastructure.
Motors, pumps, instrumentation, switchgear, lighting, transformers, temporary power systems, and other electrical equipment may operate throughout the facility.
Electrical failures can cause fires directly. Electrical arcs or sparks can also ignite flammable gas released from another source.
This becomes particularly important during construction, expansion, maintenance, and commissioning, when temporary electrical systems may coexist with permanent equipment and work conditions can change quickly.
An LNG plant explosion attorney investigating an incident may need to determine whether electrical equipment was appropriate for the environment, whether it was properly maintained, and whether a known gas release should have caused equipment or operations to be shut down.
Maintenance Work Can Increase Explosion Risks
Maintenance requires workers to interact directly with equipment that normally contains hazardous material.
A crew may need to open piping, remove a valve, replace a pump, disconnect a flange, clean equipment, or perform repairs inside a process area.
Before that occurs, equipment must be properly isolated and placed into a condition where workers can safely perform the job.
Failures in lockout/tagout procedures can allow equipment to become energized or process material to enter an area where employees are working.
Workers may also encounter residual gas or pressure even after a system has supposedly been isolated.
An explosion occurring during maintenance should therefore prompt questions about how the equipment was shut down, who verified isolation, whether lines were properly cleared, and whether atmospheric testing was performed before work began.
Startup, Shutdown, and Commissioning Can Create Changing Conditions
LNG facilities are not always in steady-state operation.
New equipment must be commissioned. Processing trains may be started or shut down. Systems can be brought back online after maintenance. Existing facilities may continue operating while expansion projects occur nearby.
Those transitions can create rapidly changing conditions.
Valves may be repositioned. Equipment may be pressurized or depressurized. Temporary configurations may be used. Alarms and control systems may be tested. Contractors may continue working in areas that are becoming operational.
Communication is critical during these periods.
A worker who believes a system is inactive may face a completely different hazard if another group has begun energizing or introducing gas into that equipment.
An LNG plant explosion lawyer investigating a commissioning accident may therefore examine startup procedures, shift communications, permits, control-room logs, contractor coordination, and who authorized each step of the process.
Gas Detection, Alarms, and Emergency Shutdown Systems
Industrial facilities use layers of protection to identify dangerous conditions and prevent them from developing into disasters.
Gas detection systems may alert personnel to a release. Alarms may warn workers to evacuate or take protective action. Emergency shutdown systems may isolate equipment or stop portions of the process.
When an explosion occurs, the performance of these systems can become a major part of the investigation.
Important questions may include whether detectors were positioned appropriately, whether they were functioning and calibrated, when the first alarm occurred, who received the alarm, and what actions followed.
Investigators may also examine whether an automatic or manual shutdown occurred and whether the shutdown successfully isolated the source of the release.
A malfunctioning safety system may raise additional questions regarding product liability if defective equipment contributed to the failure.
Contractor Work and Responsibility for LNG Explosions
LNG facilities frequently rely on outside contractors for construction, maintenance, inspection, electrical work, welding, mechanical repairs, and specialized industrial services.
That can make responsibility for an explosion more complicated.
One company may own the facility. Another may operate it. A contractor may control the equipment being repaired. A different subcontractor may be performing hot work nearby.
An injured worker’s own employer may therefore have had little or no responsibility for the condition that caused the explosion.
Depending on the circumstances, third-party liability may arise when another contractor, facility operator, equipment manufacturer, or other company created or failed to correct the hazard.
An LNG plant accident attorney handling an explosion case may need to examine contracts and actual jobsite practices to determine who controlled the work, equipment, process area, and safety decisions involved.
Evidence After an LNG Plant Explosion
The physical scene of an explosion can change almost immediately.
Emergency response may require equipment to be moved, systems to be shut down, damaged components to be removed, and debris to be cleared. Repairs may begin quickly because the facility needs to restore safe operations.
That makes preservation of evidence particularly important.
Relevant information may include control-room data, alarms, gas-detector readings, process historian data, photographs, video, inspection records, maintenance documents, permits, equipment records, electronic communications, witness statements, and the damaged equipment itself.
A serious LNG explosion may also require one or more expert witnesses to analyze process conditions, mechanical failures, ignition sources, metallurgical issues, electrical systems, or other technical questions.
Prompt preservation can become especially important when electronic data is automatically overwritten or damaged equipment is scheduled for repair or disposal.
Catastrophic Injuries From LNG Explosions
An explosion can expose workers to several different injury mechanisms simultaneously.
Blast pressure may throw a worker against equipment or structures. Flying debris can cause penetrating injuries. Flames and radiant heat can result in devastating burn injuries. Smoke or released chemicals may cause chemical inhalation injuries.
Workers may also suffer traumatic brain injury, fractures, internal bleeding, spinal injuries, amputations, hearing damage, or psychological trauma.
Victims of serious and catastrophic injuries may require repeated surgeries, rehabilitation, treatment for scarring, and substantial future medical care.
Some injured workers may be physically unable to return to industrial employment. Others may require assistance for the remainder of their lives.
When an LNG plant explosion results in a fatality, surviving family members may also have the right to pursue a wrongful death claim against responsible parties.
Speak With an LNG Plant Explosion Lawyer After a Serious Accident
LNG explosions can arise from leaking equipment, pressurized systems, inadequate maintenance, failed safety systems, improper hot work, electrical ignition sources, or breakdowns during startup and shutdown operations. Determining exactly what occurred may require a detailed examination of both the failed equipment and the decisions made before the incident.
An LNG plant explosion lawyer can investigate the source of a release, identify potential ignition mechanisms, preserve electronic and physical evidence, examine contractor responsibilities, and determine which companies may be legally responsible.
Spagnoletti Law Firm represents workers and families affected by catastrophic industrial fires and explosions. Our LNG plant explosion attorneys can investigate the circumstances surrounding an incident and evaluate potential personal injury claims against responsible companies.
If you or a loved one has been impacted by an LNG plant explosion, call us. Contact Spagnoletti Law Firm at 713-804-9306 or contact us online for a free consultation.
We handle injury cases on a contingency fee basis, meaning our clients do not owe attorney’s fees unless we recover compensation for them.