Details on types of water intake structures and equipment. Visit us at www.waterscreen.com for more information.

1. www.waterscreen.com
Cook Legacy College
Training Module P3000:
Intake Structures and
Equipment

2. www.waterscreen.com
Goals of This 15-Minute Module

Understand the general types of
intake structures

Understand physical and
hydrodynamic exclusion principles
for intake structures, and associated
intake structure design

Identify technology based solutions
to common intake structure
problems

Apply principles to intake structure
size

3. Intake Structures and Equipment
Fundamentals
IS 101:
Fundamentals
IS 102: New
Knowledge/
Skills &
application
3
IS 103:
Review and
Quiz

4. Typical Intake Structure Layouts
4

5. Hydrodynamic Zone of Influence
HZI - The area around the intake through
which intake flow is impacted.
5

6. Minto Fish Collection Facility Case Study
The Minto Fish Collection facility
used flat panels and a gallery of air
burst manifolds to maintain clean
screens to aid in fish passage.
6

7. Intake Structure Sizing
The Starting Point for Sizing is the Same
as Any Other Process Technology
1.
2.
Volume of flow
3.
Approach & sweeping velocity
4.
7
How much filtration
Head loss

8. “IN”
Water Need
Current Demand
Growth Projections
Redundancy
“OUT”
Basic Screen
To interface with water body
Reliability, Availability
8
Detailed Design:
Geometry
Mechanical
Features
Controls

9. Intake Structure Design
Intake Structures are Designed by
the Right Application of:
• Site
• Location
• Screening Technology
9

10. Catch & Separate and
Velocity Reduction
10

11. Cost Drivers
11

12. Technologies and Equipment
12

13. Wedgewire Screens
Wedgewire Screens:
•Screens that don’t clog or kill fish.
•Cook Legacy flow modifier
•Several install options
•No moving parts
13

14. Traveling Screens
Traveling Screens:
•Low Maintenance
•Fish Friendly
•Debris Handling
14

15. Traveling Screens
Carbon or
Stainless Steel
Outer Frame
Stainless
Steel
Carry-way
Take-up
System
15

16. Hydrolox Drive Mechanism and
Fish Delivery
• Positive drive system distributes load across the
Low
Pressure
Spray
Header
entire screen width; eliminates mis-tracking,
uneven wear and transmits consistent torque
•
Identical split stainless steel 13.5” diameter
drive sprocket for both screen types.
•
Light weight polymer material (40% less) and
full width engagement enables faster
response times and instantaneous screen
speed changes during debris episodes.
•
Hydrolox screens are designed to run 24/7.
16
Fish
Trough
Debris
Trough
High
Pressure
Spray
Header

17. Beaudrey WIP
Designed to fit into existing channels
Rotating screen removes debris
No carry over
Can integrate a FPS
17

18. Behavioral Options

Acoustic Avoidance

Electric Guidance

Gunderboom AFB
18

19. Jacquelyn™ Coating: Features and
Benefits
Jacquelyn coated screen sample on right
stays free of biofouling, while the screen on
the left is covered.
(Florida Marine Institute Salt Water Test)
19

20. IceBreak™ Systems
IceBreak™ Systems
•Eliminates Frazil Ice – Explanation…
•Control algorithm delivers the right volume
for the temperature
•Seamlessly integrated into AirBurst™
Frazil Ice
20

21. Sizing a Tee Screen
Design Inputs
Detailed Drawings
21

22. Coanda Screens
Coanda Screens
• Water carries over fish and debris
as clean water falls through
•Tough screens with low
maintenance
22

23. Coanda Effect and Sizing Variables
23

24. Review Questions
• Define approach velocity.
• Based on testing performed
by Alden, what is the ratio of
sweeping to slot velocity at
which fish are able to sense
and avoid a screen flow field.
• When sizing a Coanda
accelerator, what are the
interrelated variables one
must account for?
24
www.waterscreen.com