It's Steamy Sunday here on the blog! It's also a double digit day! 😀 Today's image is a perfect one for today as it is very steamy. This is the Wagner locomotive being "blown down" to have some work performed on it. To "blow down" a locomotive means to let the pressure off fairly quickly, usually by opening a special valve on larger locomotives or boiler plugs on smaller ones. Under normal circumstances, you don't want temperatures to change quickly on a locomotive as it stresses the metal. However, blowing it down a bit at times can help clear and sediment or gunk that couple be in the boiler. Generally you want the pressure on the boiler to drop to 0 before you drain it. On this day we were wanting to do a quick repair so we could resume running for the visitors to the show.
Guess it is quite loud when blowing down
ReplyDeleteYes, very if at full strength.
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