Connect with us

San Francisco, CA

5.25-inch floppy disks expected to help run San Francisco trains until 2030

Published

on

5.25-inch floppy disks expected to help run San Francisco trains until 2030


The San Francisco Municipal Transportation Agency (SFMTA), which runs the city’s Muni Metro light rail, claims to be the first US agency to adopt floppy disks. But today, the SFMTA is eager to abandon its reliance on 5¼-inch floppy disks—just give it about six more years and a few hundred more million dollars.

Members of the SFMTA recently spoke with the ABC7 Bay Area News and detailed the agency’s use of three 5¼-inch floppy disks every morning. The floppies have been part of Muni Metro’s Automatic Train Control System (ATCS) since its installation in the Market Street subway stop in 1998. The ATCS has multiple components, “including computers onboard the trains that are tied into propulsion and brake systems, central and local servers, and communications infrastructure, like loop cable signal wires,” Michael Roccaforte, an SFMTA spokesperson, told Ars Technica.

The floppy disks are for loading the software running the central servers, Roccaforte said:

Advertisement

When a train enters the subway, its onboard computer connects to the train control system to run the train in automatic mode, where the trains drive themselves while the operators supervise. When they exit the subway, they disconnect from the ATCS and return to manual operation on the street.

Roccaforte said initial planning for an overhaul of the ATCS, including moving off floppy disks, started in 2018 and was expected to take a decade from initial planning to completion. Because of an 18-month-long COVID-19-related hiatus, completion is expected in 2029 to 2030. SFMTA expects to settle on a contractor by early 2025 and will release a detailed project timeline then.

“Ultimately, our goal is to have a single train control system for the entire rail system,” Jeffrey Tumlin, SFMTA’s director of transportation, told ABC7.

Floppy flaws

“If it ain’t broke don’t fix it,” some say. But while the floppy disk-reliant train control system is currently working, there are challenges to relying on the dated technology, which SFMTA has highlighted for years.

The transportation body says the train control system was built to last for just 20 to 25 years, meaning it surpassed its expected lifetime in 2023. In 2020, the Muni Reliability Working Group, said to be composed of local and national transit experts, recommended replacing the transit control system within five to seven years.

Advertisement

When asked how “dire” it is to upgrade off of floppy disks, Tumlin told ABC7 that it’s all about risk.

“The system is currently working just fine, but we know that with each increasing year, risk of data degradation on the floppy disks increases and that at some point there will be a catastrophic failure,” Tumlin told ABC7.

Previously, the transportation agency claimed that the ATCS had become harder and more expensive to maintain over time. It has also discussed the challenges it has in finding workers who know how to use the dated system.

“We have to maintain programmers who are experts in the programming languages of the ’90s in order to keep running our current system, so we have a technical debt that stretches back many decades,” Tumlin told San Francisco’s KQED in February 2023.

In 2020, a company spokesperson told the San Francisco Chronicle that the SFMTA’s transportation controller graduation rate at the time was 40 to 50 percent.

Advertisement

When asked if moving off floppies would result in job losses, Roccaforte told Ars:

With the new train control system, there will still be plenty of work for [current] staff, and they will be trained in the new technology. A key part of our project strategy is to develop in-house skill sets and training for existing staff. In addition, we’ll [need] to hire more skilled positions, such as signaling engineers, to help support the new train control system.



Source link

San Francisco, CA

3-alarm fire burns San Francisco Tenderloin residential building

Published

on

3-alarm fire burns San Francisco Tenderloin residential building



A large fire burned at a six-story residential building in San Francisco’s Tenderloin District early Friday morning, leaving dozens displaced, officials said.

The fire started at around 3 a.m. at a building on Golden Gate Avenue near Taylor and Market streets, adjacent to the Golden Gate Theatre. The San Francisco Fire Department said the fire started on the top floor and reached three alarms, spreading to the attic and roof of the building. Over 100 firefighters at the scene were able to prevent it from spreading to lower floors and nearby buildings, the department said.

Multiple people were rescued and self-evacuated, and a total of 45 residents were displaced, but there were no injuries, the department said. Two cats were also rescued, one that was treated by medics at the scene and another cared for by Animal Control.

Evacuated residents were provided temporary shelter at the corner of Golden Gate and Jones Street aboard a Muni bus. The Red Cross and other city agencies were called in to assist the displaced residents, the department said.

The fire was contained by 5:30 a.m., and firefighters remained on the scene for several hours. The cause of the fire was not immediately known.

Advertisement





Source link

Continue Reading

San Francisco, CA

San Francisco firefighters to retire uniforms linked to cancer

Published

on

San Francisco firefighters to retire uniforms linked to cancer


San Francisco firefighters are finally getting the protective gear they were promised after years’ long research revealed certain chemicals used in traditional firefighter uniforms can cause cancer.

“What none of us could have known is that some of the very gear designed to protect us was quietly harming us,” said San Francisco Fire Chief Dean Crispen, who spoke alongside dozens of first responders on Thursday as he announced the city’s $3.6 million plan to provide protective equipment to all frontline firefighters by the end of the year.  “This is a joyous occasion for our city.”

San Francisco Fire Chief Dean Crispen was flanked by the mayor, state and local lawmakers, and dozens of first responders on Thursday when detailing the city’s plans to provide new, non-PFAS uniforms to frontline firefighters across San Francisco.

Advertisement

The San Francisco fire department, the tenth largest in the nation, has already distributed the redesigned gear to about 80 of its firefighters and hopes to have all 1,100 of its new uniforms in use within the next three weeks – that’s enough protective equipment to provide one uniform to each of the city’s frontline firefighters.  While city leaders hope to eventually purchase a second set of gear, San Francisco firefighters will, for now, need to wash their new gear before returning to work or continue to rely on their old uniform as a backup.

“Public safety relies on the people who stand between danger and our residents,” Mayor Lurie told the crowd during Thursday’s announcement.  “Firefighter health must always be at the center of our decisions.”

San Francisco’s efforts stem from a first-in-the-nation ban that local lawmakers passed last year, which requires the city to outfit firefighters with new uniforms by July 2026. Over the years, studies have shown the jackets and pants firefighters across America have long relied on to keep safe during emergencies are made with materials proven to cause cancer. 

These so-called “PFAS” materials, often referred to as ‘forever chemicals’ because of their reluctance to breakdown, have long been used to bolster the reliability of firefighter clothing by helping to repel flammable liquids and reduce temperatures, even in extreme heat.  Researchers, however, have found the compounds to be harmful when absorbed through skin. While the precise level of PFAS exposure for firefighters and the associated health risks are still being studied, the compounds have been linked to cancer and other negative health effects impacting cholesterol levels and the immune system, according to the Centers for Disease Control and Prevention (CDC).

PFAS aside, the inherit health risks of firefighting, including prolonged exposure to smoke and ash, led the World Health Organization to deem the occupation a “carcinogen.”  Yet, some fear the very safety uniforms firefighters have come to rely on for protection could also be making them sick. 

Advertisement
Female firefighters in San Francisco are six times more likely to develop cancer compared to the national average, according to the San Francisco Firefighters Cancer Prevention Foundation.

Female firefighters in San Francisco are six times more likely to develop cancer compared to the national average, according to the San Francisco Firefighters Cancer Prevention Foundation.

In San Francisco, female firefighters have a six times higher rate of breast cancer than the national average, according to the San Francisco Firefighters Cancer Prevention Foundation. More than 400 firefighters in San Francisco have been lost to cancer over the past 20 years, according to the city’s fire department.

“The cost of inaction is measured in funerals,” said Stephen Gilman, who represents the local chapter of the International Association of Fire Fighters (IAFF). “The reward of action is measured in lives saved.”


The cost of inaction is measured in funerals.

Stephen Gilman, International Assoc. of Fire Fighters (IAFF)


While materials laced with PFAS have been shown to pose safety risks, so has fire gear that has been manufactured without it.  Last year, the NBC Bay Area Investigative Unit reported on research from North Carolina State University that found non-PFAS fire equipment to be less breathable and more flammable than traditional uniforms made with PFAS.

Advertisement

“We don’t want to just trade one hazard for another,” Dr. Bryan Ormand told the Investigative Unit back in May 2024.  “We’re introducing a potential hazard for flammability on the fire scene where firefighters didn’t have that before.”

The San Francisco Board of Supervisors is scheduled to vote Tuesday on a city-wide ban of what are known as ‘PFAS’ or ‘forever chemicals,’ but replacement options still aren’t widely available and those that are seem be raising new safety concerns. Senior Investigator Bigad Shaban reports.

Milliken & Company, the textile firm that made the material for San Francisco’s latest uniforms, said the new type of gear “meets or exceeds” all industry standards for “breathability and thermal protection.” 

“We refused to trade one hazard for another,” Marcio Manique, senior vice president and managing director of Milliken’s apparel business, noted in a written statement.

“It meets the strictest performance standards without adding weight or compromising breathability – giving firefighters exactly what they asked for.”

Advertisement

We refused to trade one hazard for another

Marcio Manique, senior vice president and managing director of Milliken’s apparel business


In San Francisco, the new gear underwent a 90-day test trial with 50 of the city’s own firefighters.

“What we did was we actually went through a really comprehensive testing process,” Chief Crispen told the Investigative Unit.  “It went to the lab and received testing and everything came back great, so we feel strongly about this product.”


Contact The Investigative Unit

submit tips | 1-888-996-TIPS | e-mail Bigad

Advertisement



Source link

Continue Reading

San Francisco, CA

Gas explosion in San Francisco Bay Area damages homes, sends heavy smoke into air

Published

on

Gas explosion in San Francisco Bay Area damages homes, sends heavy smoke into air


SAN FRANCISCO — A gas explosion started a major fire in a San Francisco Bay Area neighborhood on Thursday, damaging several homes and sending heavy smoke into the air.

Local outlets said there are possible injuries from the Hayward explosion.

A spokesperson with Pacific Gas & Electric Co. said a construction crew damaged an underground gas line around 7:35 a.m. The company said it was not their workers.

Utility workers isolated the damaged line and stopped the flow of gas at 9:25 a.m., PG&E said. The explosion occurred shortly afterward.

Advertisement



Source link

Continue Reading

Trending