Andrade Safe Blog
Technical knowledge for safer decisions.
Applied content on prevention, occupational health, engineering and leadership.
Fatal fall at BYD's Camaçari construction site: why working at height requires more than a safety harness
A harness, anchors and rescue arrangements must work as a system. What the Camaçari case can teach while causes remain under investigation.
Read article
Structural collapse in Taiwan: why a safety harness may not prevent a fall
During erection, a failure may affect both the working member and its fall-protection reference.
Read article
Nuclear power and artificial intelligence: how can retired reactors return to service safely?
How do Palisades, Crane and Duane Arnold plan to restart? Explore NRC licensing, aging, inspections, safety systems and electricity demand from AI.
Read article
Steel heat treatment: why does quenching harden steel and tempering change its performance?
Explore steel quenching, tempering, austenite and martensite through TTT/CCT diagrams, Jominy testing, cooling examples and applications.
Read article
Tribology — Why do bearings fail before their calculated life?
Learn why bearings fail before their rated life: friction, wear, lubrication, contamination, mounting, contact fatigue and L10 life.
Read article
Marine corrosion: why does sea spray damage steel and how can metal structures be protected?
Learn how salt spray and moisture promote steel corrosion, how thickness loss is assessed, and what controls protect coastal metal structures.
Read article
Combustible dust explosions: how can sugar, flour and metal powders cause catastrophic industrial accidents?
Learn how combustible dust explosions occur, why the Imperial Sugar disaster escalated, and which engineering barriers can prevent similar industrial accidents.
Read article
Hydrogen embrittlement: why can high-strength metals develop cracks?
Learn how hydrogen embrittlement affects ductility and cracking, with diffusion models and a 2026 study on nickel alloy 725.
Read article
Brazil's proposed end to the six-day workweek: what occupational safety science says about fatigue and rest
Brazil's Senate approved a shorter workweek proposal. Learn what remains pending and how fatigue, rest and shift design affect occupational safety.
Read article
Industrial batteries in Brazil: Statkraft's Bahia project, BESS engineering and thermal runaway explained
Explore Statkraft's BESS project in Bahia, the difference between MW and MWh, battery energy storage engineering and thermal runaway safeguards.
Read article
How do you verify that corrective actions really work after a workplace accident?
Learn how to verify corrective action effectiveness after workplace incidents, with evidence, clear acceptance criteria, a practical example and a tracking template.
Read article
Chemical plant fire in South Korea: what does the Ulsan toluene incident teach us about process safety?
A fire during toluene transfer in Ulsan affected seven tanks and prompted thousands of workers to evacuate. Examine the facts, the October 15 forensic update and the role of process-safety barriers.
Read article
Cooling towers: how does evaporation remove heat and what is the cost in water, energy and sanitary safety?
If evaporating a small fraction of water can cool the remainder, why are cooling towers so important to factories, buildings and power plants? They provide a route for rejecting heat to the atmosphere. The served process keeps producing thermal energy, which must travel through equipment and piping before crossing a final boundary with the environment.
Read article
Amazonas wildfires: how smoke turns forest fires into a public-health and environmental emergency
A wildfire does not need to reach a city street to disrupt everyday life. Smoke carries part of the problem beyond the flames, affects outdoor work and demands decisions about schools, transport and public services. In the Brazilian state of Amazonas, October 2026 brings these environmental and public-health challenges together.
Read article
Metal creep: how can steel deform and fail under a constant load?
How can a steel tube keep deforming for thousands of hours and eventually fail without an obvious increase in load? In a steam line, a superheater or a turbine, creep may be part of the answer: time-dependent deformation promoted by temperature and governed by stress and the material's evolving microstructure.
Read article
Google’s planned 702 MW fuel-cell power project: how do SOFCs generate electricity without conventional combustion?
A planned $4 billion project opens a lesson in electrochemistry and thermodynamics: generating electricity, managing heat, and interpreting emissions while keeping assumptions separate from results.
Read article
Fatal Accident at CSN's Volta Redonda Steel Plant: What Should Engineers and Safety Professionals Investigate?
Reports describe a worker struck by a dump truck at UPV. Examine questions about routes, segregation, contractors and evidence without prejudging causes.
Read article
Explosion at a Plant in Tapiratiba, Brazil: What Should Engineers Investigate About Pressure, Maintenance and Safety?
Two deaths and three injuries in initial reports. Understand the boiler/turbine discrepancy and the evidence an investigation must examine.
Read article
Vibration and resonance: when a machine amplifies its own motion
From natural frequency to signal interpretation: a narrative review with real test photographs, a pump–motor example and an interactive SDOF lab.
Read article
Metal fatigue: why can a component fail below its yield strength?
A component can withstand a load and fail after thousands of repetitions. Explore cycles, cracks and four educational models, with real photographs and the Aloha 243 case.
Read article
Centrifugal pumps: why can a pump be running and still fail to deliver flow properly?
A turning motor does not guarantee flow. Explore the interaction between pump and installation, solve the operating point and examine NPSH in an interactive lab.
Read article
How to Size a Heat Exchanger: LMTD and Effectiveness–NTU Explained
Can cold water leave hotter than the hot outlet? Understand counterflow, solve two examples and compare LMTD with NTU in an interactive lab.
Read article
Liquid Cooling for AI Data Centers: How Engineers Keep Chips from Overheating
From cold plate to facility: a Mumbai announcement introduces liquid circuits, flow rates, pumping and reliability, with a 100 kW learning lab.
Read article
How Does a Safety Light Curtain Work? OSSD Signals and Separation Distance
Detection is not stopping. Follow the beams, OSSD outputs and response chain, then explore milliseconds and millimetres in an educational laboratory.
Read article
Hydraulic Safety Valve Blocks: Why Redundancy and Monitoring Matter
A stop request must travel from the electrical signal to the hydraulic system. Explore redundancy, diagnostics, load holding, and force, speed and power calculations.
Read article
How Does a Safety PLC Work? Two-Hand Controls, Fault Detection and Safe Outputs
Two pressed buttons do not tell the whole story. Explore the safety chain, simultaneity, anti-repeat and feedback from final elements.
Read article
How much heat does a hot pipe lose? A practical guide to pipe insulation calculations
From a pipe at 90 °C to its surface balance: explore thermal resistances, critical radius, graphs, a simulator and calculation files.
Read article
The air-conditioning paradox: how can 1 kW of electricity remove 3.5 kW of heat?
The appliance does not create cold: it transports heat. Explore vapor compression, solve the energy balance and try the COP calculator.
Read article
Amelia Earhart: How Technology Is Searching for Her Missing Plane
A new expedition searches for Amelia Earhart’s missing plane. Explore the evidence, radio navigation, sonar, satellites and key uncertainties.
Read article
Pipe head loss: why can 5 mm of diameter make such a difference?
Calculate how a 5 mm increase in internal pipe diameter affects friction head loss. See Reynolds, Darcy–Weisbach, worked values and charts.
Read article
Panama 7.7 Earthquake: How Earthquake-Resistant Engineering Protects Buildings
Learn what Panama's magnitude 7.7 earthquake reveals about seismic design, ductility, ground motion, and post-earthquake safety.
Read article
Champlain Towers South: How Punching Shear Can Trigger Progressive Collapse
Explore NIST’s Champlain Towers South findings: punching shear, reinforcement details, corrosion, load paths and progressive collapse.
Read article
Nuclear fusion explained: how stellarators work and what stands between plasma and power
How stellarator fusion works, what Type One Energy plans for Infinity Two, and why plasma gain is not yet commercial electricity.
Read article
Humanoid robots in manufacturing: why traditional industrial robots still dominate
A technical look at humanoid robots on factory floors: BMW pilots, embodied AI, reliability, productivity and industrial robot safety.
Read article
Hurricane Isaias: how offshore platforms prepare with evacuation and well shut-in
Understand offshore hurricane preparation through Isaias: evacuation, well shut-in, DP rigs, ESD, safety barriers and controlled restart.
Read article
ASML and ZEISS: how Hyper-NA EUV could make the next generation of AI chips
Explore ASML and ZEISS Hyper-NA EUV: 13.5 nm light, ultra-precise mirrors, numerical aperture and manufacturing challenges for future AI chips.
Read article
When multiple barriers fail at once: what the Black Hawk-American 5342 collision teaches about system safety
Understand route design, ATC, TCAS, ADS-B, communication and risk management in the American 5342 accident, with lessons for occupational safety.
Read article
Tesla FSD in Europe: autonomous driving or advanced driver assistance?
Is Tesla FSD autonomous? Understand SAE Level 2, driver supervision, European approval, safety validation and automation limits.
Read article
Google and nuclear power: how 11 existing reactors could add 890 MW for the AI era
Explore Google and Constellation’s 890 MW uprate plan: reactor limits, turbines, licensing and the grid supplying AI data centers.
Read article
Data centers run on diesel too: what the Equinix spill reveals about the physical infrastructure behind the cloud
The Equinix NY2 spill reveals the physical cloud. Explore generators, diesel, valves, containment, drainage and environmental response.
Read article
Can lithium-ion batteries catch fire months later? Lessons from Moss Landing
Grid-disconnected batteries burned again at Moss Landing. The case explains why recovery needs engineering and control of stranded energy.
Read article
3,712 alarms in 12 hours: what the BP-Husky fire teaches about alarm flooding and process safety
When information becomes noise: alarms, abnormal situations, shift handover and the safeguards operations need.
Read article
Radomiro Tomic accident: what conveyor maintenance teaches about hazardous energy control
Confirmed facts and a practical review of isolation, lockout, stored energy and the line of fire in mine maintenance.
Read article
MRPL refinery fire in India: what a high-pressure separator rupture teaches about process safety
What the official filings establish, what remains unknown, and how to protect pressurized process systems.
Read article
Lito Sousa: the aviation educator who made safety knowledge accessible
From the hangar to millions of learners: remembering the communicator who made curiosity a path towards safer practice.
Read article
GOL Flight 1907: what its investigation teaches about human error and safety barriers
Twenty years on, CENIPA's report shows how active failures, latent conditions and defences interact, and why finding the last human action is not enough.
Read article
Oil off Amapá: what the Morpho well discovery tells us about ultradeepwater engineering
A second oil-bearing interval informs exploration; it does not establish reserves or production. Follow the drilling system, well barriers and unresolved questions.
Read article
Breast Cancer Awareness Month 2026: from pink ribbons to action
Global and Brazilian figures, warning signs, screening choices and practical support at work.
Read article
AI Data Centers Are Driving a Gas Turbine Boom: Why On-Site Power Is Back
Grid queues have made time to power a design variable. Modular aeroderivative turbines can speed deployment, with trade-offs in efficiency, cost and emissions.
Read article
Project Suncatcher: AI in Space and the Thermodynamics of Cooling Orbital Data Centers
Vacuum does not cool a chip by convection. Google's orbital research makes radiator area, heat transport and reliability central engineering questions.
Read article
Bio-Lab Conyers: how a corroded sprinkler leak triggered chemical decomposition and a toxic plume
The CSB final report connects sprinkler corrosion, chemical reactivity, inventory growth, storage layout and organizational learning.
Read article
Incident investigation methods: ISO, ILO, CSB, ICAM, RCA and more
Compare public guides, management standards, causal tools and proprietary methods. Choose an investigation approach according to risk, complexity and evidence.
Read article
Steam pipe maintenance: why closing a valve does not prove safe isolation
Two workers were scalded while replacing a gasket. The HSE case raises a broader question: what evidence makes a steam line safe to open?
Read article
A 1.2-tonne crate fell from a forklift: why rated capacity is not enough
A 1.2-tonne crate fell from a two-tonne forklift. The HSE case shows why the two figures alone cannot validate an unloading operation.
Read article
Conveyors still cause serious injuries: why do such well-known hazards persist in factories?
The procedure required isolation, yet a hole allowed blockages to be cleared while the conveyor ran. HSE cases reveal the gap between written rules and physical safeguards.
Read article
Boeing 767 overruns runway in Miami: what the CVR and FDR show — and what they still cannot prove
The recorders captured speed comments, alerts, commands and values consistent with go-around thrust. A recorded sequence, however, is not a cause.
Read article
AI Data Centers Are Pressuring Power Grids: The New Bottleneck Behind Computing
The race for computing capacity has met a physical constraint: connecting very large loads without compromising generation, transmission, equipment or dynamic reliability.
Read article
Meta’s Muse: How the New AI Agent Is Moving Stocks, E-Commerce and the Digital Ecosystem
Muse has turned the AI debate into a contest over who controls intent, execution and transactions. Here is what changed—and what remains a hypothesis.
Read article
Occupational safety in renewable energy: risks in solar and wind farms
Clean generation does not mean risk-free work. Safety must be designed into construction, commissioning and operations.
Read article
What is the U.S. Chemical Safety Board? How to use its free accident reports and safety videos
The CSB turns real chemical incidents into public reports, videos and recommendations. Learn how safety and engineering professionals can use the archive rigorously, wherever they work.
Read article
When 11 controls fail: what the Shell Monaca explosion teaches about engineered safeguards and HMI
At Shell Monaca, 11 administrative controls did not prevent cracked gas from flowing back into a furnace with lit pilots. The CSB report shows why safeguard quality, HMI and operating modes must be treated as one system.
Read article
When an informal workaround becomes routine: process safety lessons from Clairton
A water-washing practice had been known and repeated for years, yet remained outside a task-specific procedure and hazard analysis. Clairton shows why repetition does not make a workaround safe.
Read article
Air compressor and receiver tank: what must be inspected and which standards apply
A compressor package is not one regulatory object. Separate the compressor, receiver, separator, dryer and distribution system before selecting construction, certification or in-service requirements.
Read article
When a foundation drill rig loses stability: engineering questions after the Miami collapse
The Brickell collapse raises a question larger than the site boundary: how do support, configuration, task and surroundings form a drill rig's stability system?
Read article
Refinery power loss: shutdown, flaring and the path to a safe restart
Joliet shows why restoring electricity is not the same as restoring a continuous process—and why flaring, stabilization and readiness are distinct barriers.
Read article
Ammonia leak in Aqaba: why idle equipment can still hold hazardous inventory
The release during removal of an old compressor shows why stopping machinery does not prove the absence of product, pressure or connections capable of returning hazardous inventory.
Read article
Engineering data integrity: what the Hamaoka case teaches about safety decisions
The withdrawal of applications concerning Hamaoka units 3 and 4 shows why mathematical precision cannot replace traceable data, pre-defined criteria and independent challenge.
Read article
Saudi East-West Pipeline: when redundancy becomes critical infrastructure
The precautionary shutdown shows why an alternative route needs independence, integrity, buffers and a recovery plan — not only installed capacity.
Read article
Ocean Melody fire in Qingdao: what ship repair teaches about hot work and emergency response
The cause remains under investigation. The case shows why maintenance changes a vessel's systems, access, energy states, barriers and emergency strategy.
Read article
Two workers survived nine days in a Nepal tunnel: what the rescue teaches about emergency engineering
When normal evacuation becomes impossible, alternative access, technical information, personnel location, communication and rescuer safety determine what can still be done.
Read article
Ritom hydropower plant explosion: two deaths and the engineering questions around commissioning and electrical energy
What has been confirmed in Switzerland, what remains hypothesis, and why energization and brownfield interfaces demand exceptional control.
Read article
A shut-down plant is not automatically safe: the Catalyst Refiners H2S fatalities
Two fatalities during chemical disposal show why ending production does not end process hazards.
Read article
Brazil rescues 479 workers from conditions analogous to slavery: why OSH and decent work cannot be separated
A nationwide enforcement operation found slave-like working conditions in agriculture, construction and domestic work. The cases show why OSH paperwork cannot replace dignity, freedom and real working conditions.
Read article
Critical minerals in Brazil: why reserves alone are not enough to lead the new economy
Brazilian lawmakers approved a national critical-minerals policy, but the bill still awaits presidential assent. The deeper challenge is to connect geology with processing, technology, safe operations and manufacturing.
Read article
OpenAI says it solved Navier-Stokes: what would that mean for engineering?
An AI system produced a public, Lean-formalised proof for a Millennium Prize Problem. Clay still marks it Unsolved — and that distinction is where the real story begins.
Read article
Mariana dam disaster: when technical risk information reaches the decision table
The TRF6 ruling brings back a defining question for high-hazard operations: how can technical signals become alerts, authority, decisions and verified action before consequences become irreversible?
Read article
Codelco suspends Andes Norte over emerging seismic risk: when stopping becomes an engineering decision
Six months of data indicated seismic behaviour that no longer fitted historical assumptions with the same confidence. The case shows why monitoring protects only when evidence can change a decision.
Read article
Engineered stone and silicosis: why an old occupational disease is affecting young countertop workers
A 2026 study identified hundreds of silicosis cases among engineered-stone countertop workers. The real lesson is how to stop respirable crystalline silica before it reaches the breathing zone.
Read article
Brazil’s ANM proposes new safety rules for mining piles: what could change
Brazil is debating a dedicated, risk-informed framework for mining piles. Learn what already applies, what remains a draft and why water, consequence, monitoring and emergency planning matter.
Read article
CEAGESP fire: why extinguishing the flames does not mean the structure is safe
The fire was controlled, but safe re-entry requires more than the absence of flames. Learn what heat can change in steel, concrete, connections and workplace conditions.
Read article
Yellow September 2026 in Brazil: What Workplaces Can Do to Prevent Suicide Beyond Awareness Campaigns
Brazil's 2026 campaign says that listening means being present. Lasting prevention also requires access to care and healthier work organization.
Read article
Brazil Regulates Underground CO₂ Storage: How CCS Works and Its Engineering Risks
Brazilian Decree 13,095/2026 sets out the country’s carbon capture, transport and geological-storage chain. Here is what changed and why integrity, wells, pipelines and emergency planning matter.
Read article
Green Hydrogen in Brazil: New Market, New Engineering and Safety Risks
Brazil’s new hydrogen framework is accelerating low-emissions projects. Yet electrolysis does not remove flammability, pressure, material compatibility, electrical or emergency-response risks.
Read article
Brazil’s AI Data Center Boom: Engineering and Safety Risks Behind the Cloud
The race for artificial intelligence has also become a race for megawatts. Behind the cloud are substations, UPS systems, batteries, generators, cooling, water and people maintaining critical infrastructure around the clock.
Read article
El Niño 2026–27 in Brazil: Heat, Flooding, Wildfires and Workplace Risks
El Niño is strengthening, but a forecast is not destiny. Companies operating in Brazil can use the lead time to review heat, smoke, rainfall and continuity controls.
Read article
BESS in Brazil: Grid-Scale Batteries, Fire Risk and Safety in the Energy Storage Expansion
Brazil is preparing its first large battery-storage auctions. Learn how a BESS works, why thermal runaway and stored energy require engineered safeguards, and what must be managed throughout the asset life cycle.
Read article
Backhoe Blind Spots: Why Distance Rules Alone Do Not Control the Risk
A worker was killed inside a trench in Brazil. The case shows why visibility, exclusion zones and positive communication must be controlled by the system of work.
Read article
11 Workers Died After a Tank Deemed ‘Not Fit for Continued Service’ Remained in Operation
The hazard had been measured, documented and classified as critical. The Nippon Dynawave case shows why inspection without a decision does not protect workers.
Read articleNepal Glacier Collapse: 7 Emergency Preparedness Lessons
The August 2026 glacier collapse shows why early warning, evacuation, redundancy and responder safety must be designed before a disaster.
Read article