High Temperature Water Boiler Definition

[rstofer]

We have electrically heated devices that produce hot water with a temperature on the order of 500F and pressure on the order of 1000 psig.

The State Of California doesn't give a great definition of "boiler" but some states specifically include hot water in the definition. Creating steam is not a requirement.

The questions are these: from the operating conditions are these devices "High Temperature Water Boilers"? Second: does ASME Section I apply? FWIW, the "boilers" are 1" nominal 316 SS tubing with cal rod heaters. Under ASME Section VIII they might be exempt based on pipe size.

My unqualified opinion is that these are Section I boilers but I am looking for more qualified information.

Thanks!

 

[deanc]

Looks like a Sec I boiler to me. See PG-2.3 and PEB.

 

[ExAI]

It walks like a duck and talks like a duck, however, there are many possiblities. The true definition of a section I boiler is in the stamping. Find the original manufacturers stamping, manufacturers Data report, or obtain this information using the boilers National Board registration number (if available) to determine original Code of construction. An "S" stamp within the ASME "clover" would describe it as ASME I. Lane Baker
Baker Quality Services
LaneBQS@att.net

 

[rstofer]

The problem is that the boiler exists, it is not stamped, code stamping was not included in the original design (although it was an option), the unit is 25+ years old and I am concerned about whether it should have been stamped.

It can only be exempt from annual inspection if it was built to ASME specifications - if any apply.

 

[deanc]

Suggest you contact the Jurisdiction where the boiler is located. Also contact the Insurance carrier. They may permit
a "S" stamp holder to rate this boiler and the state may issue a "State Special". You might also have to remove it from service. But maybe not if you approach this properly.

Contact the National Board at

http://www.nationalboard.org

for
details.