Instrumentation for Hazmat Dredging Projects

Category:

Operating Procedures

Description:

Advances in instrumentation can improve efficiency of hazmat dredging projects. Typical criteria

and objectives for hazmat dredging projects :

1. Monitoring/Controlling Total Suspended Solids (TSS)

- OBD (optical backscatter device)

2. Monitoring Excavator Position

- GPS

- Laser positioning

3. Maximizing Concentrations of Solids

- Laser Line Scan System (LLSS), instrumentation used to provide visual information to

maintain optimal contact between the excavator and the hazardous material. Conceived in the

1960's. Oceaneering Technologies has been working with WES to acquire funding through

CPAR for dredging related demonstrations of the LLSS's capabilities. LLSS's are manufactured

by Westinghouse. The LLSS consists of two major components:

a) Underwater pressure vessel - contains the illumination source and scanning mechanism.

b) Topside console - Contains the signal processing equipment required to create the visual

image.

Reviewer:

C. Woolley

Company / Organization(s):

Information Sources:

Literature:

Title:

"Advances in Instrumentation for Hazmat Dredging Projects"

Author:

Keith Lipford

Month:

May

Year:

1994

LitType:

Report/Proceedings

Publisher:

WEDA XV

Page:

174

Chapter 5 Other Technologies Reviewed