It's possible, but much more likely there is a leak somewhere.
A pressure vessel that is not in direct contact with a heating flame
there are many factors to be considered to achieve desired temps. when using steam as a heating source. pressure and temp. are very critical due to expansion of the vessel and the piping.
Certified Pressure Vessel
The answer depends on the pressure vessel.
Boiler is basically a pressure vessel in which this boiler aims to heat the surroundings which is a pressure vessel.
A heating vessel connected to a condensing loop. The condensing loop drips into a catch vessel.
The main purpose of a pressure vessel is to hold gases or liquids at a pressure inside a container different to the pressure outside of the pressure vessel. Usually pressure vessels are made from steel.
As blood enters the capillary bed on the arteriole end, the blood pressure in the capillary vessel is greater than the osmotic pressure of the blood in the vessel. The net result is that fluid moves from the vessel to the body tissue.At the middle of the capillary bed, blood pressure in the vessel equals the osmotic pressure of the blood in the vessel. The net result is that fluid passes equally between the capillary vessel and the body tissue. Gasses, nutrients, and wastes are also exchanged at this point.On the venue end of the capillary bed, blood pressure in the vessel is less than the osmotic pressure of the blood in the vessel. The net result is that fluid, carbon dioxide and wastes are drawn from the body tissue into the capillary vessel.
Systolic.
To absorb the expansion volume of the water in the circuit after it is heated. This in turn stops the pressure rising to excessive levels which could cause system damage.An expansion vessel is a small tank that is used to protect water heating systems from excessive amounts of pressure. They can also be used to protect the cooling systems of internal combustion engines.
The ASME Boiler and Pressure Vessel Code details all the various calculations necessary to determine the MAWP of any pressure vessel.
It depends on which Directive the vessel has to be compliant with. For instance, to comply with CE/PED, the test pressure shoud be 1.43 times the maximum operating pressure.