Boiler explosions are rarely caused by a faulty safety valve. Boilers are statically tested to pressures 25% above normal operating pressure.
Boiler explosions are typically caused by low water conditions which cause the crown sheet to fail.
Rick, you have attached a lot of good images to this thread. But you did not set them to DISPLAY within your posts. When you add attachments, be sure to click the button where it says “Include all images into post (large size).” That will place the image directly into the post. I did this for you in the post above this one.
