The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 15, 2021

Filed:

Nov. 13, 2018
Applicant:

Novinium, Inc., Kent, WA (US);

Inventors:

Glen John Bertini, Fox Island, WA (US);

Weston Philips Chapin Ford, Seattle, WA (US);

Assignee:

NOVINIUM, INC., Kent, WA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N 11/02 (2006.01); G01N 33/00 (2006.01);
U.S. Cl.
CPC ...
G01N 11/02 (2013.01); G01N 33/004 (2013.01); G01N 33/0044 (2013.01); G01N 33/0047 (2013.01); G01N 33/0057 (2013.01);
Abstract

A method performed by a system controller and estimating a size of a manhole event occurring in a network of manhole vaults interconnected by connections. The method includes obtaining first, second, and third mass flow rates for each of a plurality of gaseous components present in exhaust, fresh air, and event flows, respectively, and estimating the size based on the third mass flow rate obtained for at least one of the gaseous components. The exhaust flow exits a selected vault of the manhole vaults, the fresh air flow enters the selected vault from an external atmosphere, and the event flow originates from the manhole event. The third mass flow rate for each of a portion of the gaseous components is determined by subtracting the second mass flow rate obtained for the gaseous component from the first mass flow rate obtained for the gaseous component.


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