Maintenance Guild 49th meeting minutes
/Meeting minutes of the November 6th, – 8th 2024 meeting in Orlando, Florida.
The members of the guild arrived on Monday November 6, 2024, for breakfast at 7:00am.
Mark Kropf reviewed the details of the week’s schedule. Mark then covered the status of the Maintenance Guild and ask what the future should look like. With our industry running lean in the skilled labor sector, the ability for attendees to get to meetings has become very difficult. The new president and vice-president elected from our last meeting were introduced Nate Hotson President from ArcelorMittal Dofasco, Mike Osteen as our first vice-president and Chris Long from Metallus (Timken Steel) as our Second vice President.
The following companies were represented; CMC Alabama, CMC Texas, ArcelorMittal Dofasco, Nucor Jewett, Metallus, Vallorec Star & IVACO.
Nate started the round table session at 8:15 by having the introduce themselves and then started with questions from the floor.
Is anyone using remote vibration monitoring? Similar to Daniele system, there was some of the members discuss the Allen Bradley system, Bentley Nevada system on there baghouse fans, Profix integration system, from waste Motion industries has a system as well. The group discussed the history of these systems and how it has changed to what we are using today. The group discussed companies that do onsite monitoring and generate reports for them.
What type of carbon injection hoses are other group use? Any experience with ceramic lined hoses?
Anyone using the INTECHO PTI Slag door? Do you have issues with it sticking and or being welded shut? Production loves them but maintenance wise it’s hard to maintain. The group discussed the issues they are facing and compared the other designs in the industry that are being used. Sarrallie upper shells will have there version of door pushers and they look like they will be a maintenance headache. Uni-gate, Tail gate were discussed as well.
The group moved to discuss tap hole sanding devises and the different issues they have.
The group discussed the slag hauler and slag pit cleaning services and the issues on the equipment safety with fire suppression system for the cabs and operator safety.
How many mills have fire departments on site only one did and most said it’s the maintenance department that acts as this group.
What are other shops doing to maintain and/or inspect the furnace foundations? Some mills do core sampling of the piers with mixed results.
Who is using slag pots under there furnace? And how do you kill the slag foam ups? There were a couple of mills and they all use water spays controlled by the operators. The group discussed the different types of slag handling styles and their pros and cons.
The group had a long discussion on the challenges the industry is facing in find and retaining skilled trades in their shop. They discussed some of the different programs and places they are using to get the skilled trades in their shop along with the economic challenges they are facing.
We took a break at 10:20 and started back at 10:35
What are other shops handling power failure on the crane magnets in the loading bays. Some shops utilize battery back ups to prevent sudden load drops? They discussed the different types of systems utilized in different shops as well as the problem of material band breakage from multiple material movements creating band stretching.
What are other shops doing for crane festoon change outs along the contacts and other controls systems. The group discussed different maintenance schedules as well as what cranes have more frequent inspections. Most inspections are based on time in use particularly on cable wear.
What are other shops doing with crane maintenance downturn schedules? The group discussed their different schedules utilized for different cranes.
What are other shops doing with the handling of baghouse dust? And where is it classified as KO61 hazardous waste? There was a large variability from state-to-state EPA and the group discussed the differences in those regulations.
Does anyone have a baghouse fan rotation lock system to prevent fan rotation during maintenance on the fans and motors? One mill mentioned their system supplied by Robinson Fan. The conversation continued with the problems with the baghouse fan maintenance plans from cleaning schedule and types of cleaning processes used. The group talked about bag styles and types that lead into a long conversation on baghouse operations, maintenance and design functionality.
Has anyone had issues with baghouse dust that fell on the ground spontaneously combust? No one had seen that type of scenario. The group then discussed duct temperature control and different gas cooling systems and there pros and cons. Temperature set points for the cooling systems was discussed as well.
The group broke for Lunch at 12:00
We started back at 1:00
Who does Duct work inspections for material build up and structural inspections? Some use drones, but nor able to do thickness. Geco?, has a magnetic robot that can crawl up a steel duct and scan the duct for thickness and surface defects.
How often are duct inspections made? Some shops are doing annual inspections and some use IR thermal scans to see build up. One shop found that if you vac part of the pile out the turbulence created caused it to self-clean. AUMA and Beck actuators were the two manufacturers that were referenced in the conversations on damper control, one shop used a hydraulic cylinder with tempo Sonic position measurement. The conversation continued for a while but ultimately, the group came to conclusion that a Process engineer should be reviewing all data points as a rule rather than one data point at a time AKA electrode consumption vs delta life, duct life, water-cooled panel life, shop environment emissions.
One mill ask if any shop would be willing to allow there young maintenance guys to be on site to observe day to day activity to better understand maintenance activity.
What is other shops doing with AI? Are you getting staff to utilize these technologies? There have been some basic utilization of it in fire detection utilizing cameras, and some shops are starting to look at it for early warning systems. Some would like to see more utilization of the technology in the process side of steel making. Scrap mix, melt optimization, run out and roll optimization were some of those topics discussed. Water panel leak detection utilizing flow differential with wireless hubs will utilize the AI technologies. Another type of leak detection was based around sound variations, early testing as been promising
The group migrated into a detailed safety conversation on effective safety policies. They all had examples of safety procedures that have been followed and the workers are in a mindset that they are safe when there was outside influences that caused a near miss or accidents. The group feels that the safety training needs to include information to the worker and needs to aware that they are responsible for there safety and not rely on a procedure with verification. Bottom line is there is no reason not to follow LOTO procedures or circumvent those procedures.
We took a break at 3:30
We started back at 3:55
What do the other mills present think of starting a student chapter of the maintenance guild? The group discussed the potential of this but logistically getting students involved from multiple locations would be extremely difficult. There are a number of mills running high school co-op programs to develop a skilled labor base and there are a number of challenges with these programs set aside the cost to get them to a guild meeting on a ROI basis.
Has anyone seen clamp head water hose failures on the electrode arms? Some suggested that it may be an isolation issue, water quality potential with high acid content, or even a fatigue failure mode. The group discussed different styles of connections on the spray rings, also thinking there may be some impact on this hose.
Do any shop re-torque the bolts on a power cable change after the first heat change? Everyone said it was a one and done.
Is anyone using mobile maintenance apps on tablets or phones? Some of the shops in attendance are using various systems on tablets and it seems to be working out.
Are any shops testing dioximat? Levels? (by products of burnt plastics) no one knew about it. They discussed mercury and Nox levels monitoring coming.
Anyone using other caster materials in the caster spray chamber? Stainless steel is now becoming the standard for this application. The conversation moved to mold oscillators and some of the new designs coming out of Concast.
The hydraulic oscillator cylinder is experiencing corrosion, and we are now using a 316L sst to correct this issue.
The group discussed the recent event of the caster turret failure in Mexico and the little information that was released.
What are other shops using for roof swing positioning? Encoders and transducers were discussed.
What are other shops doing with heat stress for maintenance on cranes. The group discussed cooling vest but most have opted for cooling stations and more frequent breaks
The round table finished at 5:15 pm.
This meeting the members will be on their own for dinner and return to the hotel for the Hospitality room activities from 7 till 11 provided by the supplier sponsors.
The group started off Thursday with breakfast from 7:00 to 8:00. Mark opened the technical session with updates for the day and reminded everyone that was in attendance to provide their business cards for the attendee list. This will be emailed to the attendees later in the week.
Nate made the introduction for our first presentation at 8:05.
PRESENTATION:
BUCK STONE OF SYSTEMS SPRAY-COOLED
PRESENTING A PAPER TITLED “NO MAN ON THE FLOOR”
Buck finished the presentation at 8:35 and took questions from the floor.
After a short break Chris introduced our second paper at 9:00.
MARK KOENIG OF EXO PRESENTING A PAPER TITLED, “ELECTRODE ADDERS, UP ENDERS, & SAMPLING MACHINES, KEEPING TEAMMATES OFF THE FLOOR”
Mark finished the presentation at 9:30 and took questions from the floor.
After a short break Nate introduced our third paper at 9:50
GREG ODENTHAL OF INTERNATIONAL TECHNICAL CERAMICS PRESENTING A PAPER “TEST RESULTS OF ELECTRODE COATING TRIAL AT CLEVELAND CLIFF TO REDUCE CONSUMPTION”
Greg finished the presentation at 10:20 and took questions from the floor.
Chris made the introduction for our fourth presentation at 10:40
DYLAN McGILL OF KALINBORN ABRISIST PRESENTING A PAPER TITLED “WEAR SOLUTIONS FOR MELT SHOP APPLICATIONS”
Dylan finished the presentation at 11:10 and took questions from the floor.
After a short Break Nate introduced our fifth paper at 11:20
TIM FOX OF VEOLIA PRESENTING A PAPER TITLED “CAUSE AND EFFECTS OF BAD WATER QUALITY”
Tim finished the presentation at 11:50 and took questions from the floor
12:00 Members went to lunch
1:00 Members boarded bus and departed at 1:15 for the tour of the NUCOR FROSTPROOF facility.
5:30 The group returned to the hotel.
At 6:00 the members gathered in the Ballroom for a hospitality mixer.
At 7:00 dinner was served.
At 8:00 we were able to hear our guest speaker.
DJ OWENS AND LEE PERRY MAINTENANCE SUPERVISORS NUCOR FROSTPROOF
From 8:30 - 11:00 the group finished with a mixer to discuss the day’s events and information.
Friday November 8, 2024
MEMBERS ENJOYED A GOLF OUTING AT Celebration Golf Club
TEE OFF 9:54AM
MEMBERS ARE ON THERE OUN FOR THE REST OF THE WEEK