A tuyere sits at the point where cool copper meets the hottest zone in the entire blast furnace, blasting hot air into the raceway while a thin water jacket keeps the metal from melting. When a tuyere burns through, it isn't a minor fix, it's an emergency shutdown of that section with furnace gas and hot material pushing back the wrong way. This checklist covers what to verify on the tuyere body, its cooling water, and the blowpipe connection feeding it. Sign up to turn this checklist into a guided digital procedure your crew follows on every shift.
20-40 Tuyeres
Typical number of tuyeres ringing a large blast furnace, each needing its own check
Daily Watch
How often return water temperature per tuyere should be reviewed
Zero Tolerance
Room for ignoring a cooling water flow drop or a rising return temperature
Why Tuyeres Fail Fast Once They Start
Unlike thicker refractory sections, a tuyere is a thin copper shell working right at the raceway, so once cooling water flow drops or the nose erodes past a safe point, failure can happen in minutes rather than weeks. That's why per-tuyere checks matter more here than on almost any other furnace component.
Tuyere Body & Wear Inspection
Nose Erosion & Wear Check
Check tuyere nose profile where accessible for erosion that signals it's approaching end of life
Tuyere Cooler Condition Check
Inspect the copper cooler body for discoloration or deformation that points to internal overheating
Tuyere Stock Alignment Check
Verify the tuyere sits square in its stock with no gap that would let furnace gas leak past the seal
Watch Every Tuyere, Not Just The Furnace As A Whole
Oxmaint guides your crew through per-tuyere flow, temperature, and wear checks, with readings logged against each position on the furnace. Sign up for a free trial to build your tuyere checklist, or book a demo to see it in action.
Cooling Water & Leak Checks
Tuyere Cooling Water Flow Check
Confirm flow rate to each individual tuyere is steady, since one blocked line can fail fast
Return Water Temperature Check
Track return water temperature per tuyere and flag any one running noticeably hotter than the rest
Leak Detection At Tuyere Breaks
Check for hissing, moisture, or steam at tuyere break points that would indicate a developing leak
Blowpipe & Bustle Pipe Checks
Blowpipe Gasket & Seal Check
Inspect the blowpipe gasket and swivel seal for wear that could let hot blast air leak out
Bustle Pipe Pressure Check
Confirm bustle pipe pressure is even across all tuyere positions to keep blast distribution balanced
Tuyere Stock Refractory Check
Check refractory condition around the tuyere stock, since erosion here undermines the tuyere seal too
What A Skipped Check Can Cost You
| Check Skipped |
Likely Consequence |
| Cooling water flow check |
The tuyere burns through, forcing an emergency stop at that position |
| Nose erosion check |
Uneven air distribution across the raceway, hurting furnace performance |
| Leak detection check |
Water enters the furnace through a burnt tuyere, a serious safety event |
| Blowpipe gasket check |
A hot blast leak reduces efficiency and can burn nearby components |
Where A CMMS Fits Into Tuyere Checks
Oxmaint ties this checklist to each tuyere position as a tracked asset, logging flow, return temperature, and replacement history so a single hot-running tuyere is flagged before it becomes a burn-through.
Frequently Asked Questions
Q
How often should tuyeres be inspected for wear?
Cooling water flow and return temperature should be reviewed daily for every tuyere, with a closer visual and physical inspection done whenever a tuyere is pulled for any reason.
Q
What causes a tuyere to burn through?
A tuyere typically burns through when its cooling water flow drops below what's needed to carry away heat from the raceway, letting the thin copper nose overheat and fail.
Q
Can a CMMS track tuyere replacement history?
Yes, a CMMS can log every tuyere replacement by position, making it possible to see which positions fail more often and plan proactive changeouts instead of reacting to burn-throughs.
Keep Every Tuyere Cool, Sealed, And Watched
Oxmaint guides your crew through tuyere flow, temperature, and leak checks and logs every reading against the exact position automatically. Sign up for a free trial to build your tuyere inspection checklist, or book a demo to see it in action.
