Intellectual Property Security Agreement Supplement

Recorded: 2010-10-07 Received: 2010-10-07 Pages: 8

Assignors

AQUILEX CORPORATION

Executed: 2010-09-28

AQUILEX HYDROCHECM, INC.

Executed: 2010-09-28

AQUILEX WSI, INC.

Executed: 2010-09-28

Assignee

ROYAL BANK OF CANADA

200 BAY STREET, SOUTH TOWER, 12TH FLOOR, TORONTO, ONTARIO, CAX, M5J 2W7, CANADA

Covered Properties (10)

Semi-Automated Heat Exchanger Tube Cleaning Assembly and Method

Application: 61/383,965 →

Bladder System with Carbon Scrubber for Storage Tank

Application: 61/370,748 →

Diagnostic Tools and Methods Thereof

Application: 12/784,269 →

Driving Apparatus for One or More Heat Exchanger Tube Cleaning Lances

Application: 61/304,618 →

Alloy, Overlay, and Methods Thereof

Application: 12/689,637 →

Bladder System for Storage Tank

Application: 61/267,333 →

Driving Apparatus for Heat Exchanger Tube Cleaning Lance

Application: 61/251,985 →

Equipment and Process for Applying an External Structural Weld to Piping and Similarly Shaped Pressure Boundary Components

Application: 12/474,246 →

Apparatus for Butt-Welding Tube Joints

Application: 12/419,134 →

Automated Heat Exchanger Tube Cleaning Assembly and System

Application: 12/383,183 →