I am certified by the American Petroleum Institute under their API 570 program.

"A well-regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms shall not be infringed."
- James Madison of Virginia, et al

"... and if you don't have a sword, sell your cloak and buy one"
- Jesus of Nazareth

Welcome to Corish Engineering Online

I am the proprietor, William P. Corish, P.E.  We provide mechanical engineering services. Our work is concentrated in two areas; industrial-grade piping systems and small, specialized building mechanical systems (i.e., HVAC, plumbing and fire protection).  We offer piping inspection, engineering and construction surveillance services to the following industries and clients:

- petroleum

- chemical

- power

- pulp and paper

- military and government.

Our building systems clients range from multinational corporations to private homeowners.

Professional engineering

I am licensed to practice engineering in the following jurisdictions:

The Commonwealth of Virginia

The State of Maryland

The State of West Virginia

The District of Columbia

If you have a project outside of these jurisdictions, it is still possible we can serve you. Many states offer temporary licensure while an application for permanent licensure is processed.  I maintain an NCEES Record to facilitate this process.