Curious this thread popped up just when I had a problem.
I generally jam fill my 2400 psi LP Worthington 121s to 3200 PSI. Last summer, I was rushing and left one of them partially uncovered in my car parked in a Hatteras parking lot. Direct sun exposure to the metal tank body in a closed car with the windows cracked about 1".
That evening when I returned, I discovered that the burst disc had failed. I have them disced for 5000psi. I marked the tank so I knew which one it was.
Last week, I took 10 of my tanks in for hydro, the burst disc failed tank as well, all Worthington LP steels with identical fill histories. Guess which one failed? Not only failed, but REALLY failed. 29% overall expansion rating. Worst the tester had ever seen. Clean as a whistle on the inside. All the others were 2-3% for comparison.
Clearly, the tank in question got hot enough to fail the disc. The event lasted long enough to stress the steel.
It can happen...
I generally jam fill my 2400 psi LP Worthington 121s to 3200 PSI. Last summer, I was rushing and left one of them partially uncovered in my car parked in a Hatteras parking lot. Direct sun exposure to the metal tank body in a closed car with the windows cracked about 1".
That evening when I returned, I discovered that the burst disc had failed. I have them disced for 5000psi. I marked the tank so I knew which one it was.
Last week, I took 10 of my tanks in for hydro, the burst disc failed tank as well, all Worthington LP steels with identical fill histories. Guess which one failed? Not only failed, but REALLY failed. 29% overall expansion rating. Worst the tester had ever seen. Clean as a whistle on the inside. All the others were 2-3% for comparison.
Clearly, the tank in question got hot enough to fail the disc. The event lasted long enough to stress the steel.
It can happen...