Hours after a 28-car Norfolk Southern prepare derailed Saturday in Springfield, Ohio — the third incident for the freight railroad in simply over a month, together with the poisonous catastrophe in East Palestine, Ohio — inside emails present railroad officers making broad security changes for rail vehicles.

An inside Norfolk Southern electronic mail despatched Sunday and obtained by CNBC with a time stamp roughly 11 hours after the most recent derailment indicated that Norfolk Southern was planning to cut back prepare size in an effort to stop future incidents. Sources inform CNBC the e-mail was given to Norfolk Southern yard managers, who’re union staff accountable for stacking the trains.

A Norfolk Southern spokesman informed CNBC that steering has since been up to date and the prepare service is now mandating that any trains over 10,000 ft use distributed energy, which means the trains can be powered from a number of places throughout the size of the prepare, not simply from the entrance. Distributed locomotives are wirelessly managed from the main locomotive in each energy and braking as wanted.

Norfolk Southern informed CNBC different railroad carriers presently have this security apply in place.

“At Norfolk Southern, the security of our crews and the communities we serve comes first,” Connor Spielmaker, spokesman for Norfolk Southern, wrote through electronic mail. “A part of enhancing security is constantly evaluating how we function our community, and we’ve got been analyzing speedy methods to maneuver that purpose ahead. In the present day, as an interim step, we’re guaranteeing all trains longer than 10,000 ft are operated with distributive energy. We are going to construct on this interim change to drive remaining insurance policies which are applicable for every section of our railroad.”

Norfolk Southern informed CNBC it’s actively reviewing all security protocols to verify trains are working appropriately throughout the community.

Nonetheless, Jeremy Ferguson, president of SMART-Transportation Division, the nation’s largest rail union, stated his staff are being informed the railroad will restrict prepare size.

“I’ve seen Norfolk Southern paperwork to yardmasters [Monday] morning from the sphere that’s telling us trains now not than 10,000 ft no matter distributed energy,” stated Ferguson. “The prepare that derailed on Saturday already had distributed energy, so their remark to CNBC doesn’t make sense. I’ll say it’s a good transfer by Norfolk Southern to take the suitable steps in lowering the prepare lengths, as a result of the trains are too lengthy.”

Practice lengths have been a contentious concern for railroads and labor unions in negotiations. Railroads presently run on what’s referred to as precision scheduled railroading, or PSR, which has led to for much longer trains — so long as three miles.

Trains are stacked primarily based on the vacation spot, not weight distribution, with stacking of the primary vacation spot on the head of the prepare and in sequence till the final drop-off.

Railroads have redesigned prepare size in an effort to make use of fewer folks and to maneuver extra vehicles with fewer locomotives, lowering prices and producing increased income. However railroad unions and clients have raised security and repair considerations.

The derailment in Springfield marks the third derailment because the Feb. 3 East Palestine prepare catastrophe, by which hazardous supplies spilled.

On Feb. 16, a 135-car Norfolk Southern prepare touring from Detroit to Peru, Indiana, derailed roughly 14 miles exterior the yard in Romulus, Michigan. Based on the investigative report for that incident, the tonnage profile exhibits heavy vehicles on the head of the prepare, within the center and within the rear, with empty vehicles scattered all through.

The derailment continues to be below investigation, however in line with one on-site investigation report, human error is prone to be a big issue: An “engineer panicked and utilized heavy dynamic braking which resulted in an emergency brake software and derailment.”

The Nationwide Transportation Security Board introduced it’s sending investigators to the Springfield website.