1. Fiberglass Tank & Pipe Institute Presentation
Double-Wall Tank Sump Session
2017 ASTSWMO May Meeting
(May 23-25, 2017)

2. Round DW Collars 42” and 48” round collars
Accepts round base of sumps for rotation and precise alignment

3. Polygon Sump Base Bottom of polygon sump base transitions to round
Allows for precise adjustment of base so flat panels align with entry fittings and pipe runs

4. 8-Sided Polygon Sump Bases
Both the 42” and 48” diameter sumps are 8-sided
Allows for proper alignment of pipe and entry fitting for 90 and 45 degree couplings

5. Drain/Test Fitting Threaded fitting and plug
Designed for annual testing and demonstrating communication between tank collar and sump

6. 2-Piece Design Bottom section of polygon base is 2’ high
Avoids confined
space entry
Makes installing pipe penetrations easier
Permits immediate pre-testing of entry penetrations

7. Joint Options Adhesive Channels
Sumps are connected through factory installed adhesive channels with supplied adhesive kit
Layup Joint
Sumps are connected through field installed layup with supplied kit

8. Watertight Lid Manufactured out of fiberglass No mechanical fasteners
Optional inspection port
Watertight gasket design

9. Reservoir
Integral fiberglass reservoir that cannot be easily damaged during routine maintenance
PVC threaded opening
Convenient access to sensor

10. Palletized Sumps
Sumps may be palletized for transportation and jobsite storage
Prevents damage in transit or on-site

11. Double-Wall Tank Sumps
Installation Material & Training

13. Assembly Instructions

14. Assembly Instructions
Adhesive Joints – Sand the surface that will contact the adhesive
Layup Joints – Sand a minimum of 4” onto each part where the layup will be applied
Ensure mating surfaces are free of contaminants and dry
Wipe with clean cloth
Do not use oil-based solvents, soap, or water to clean surfaces
Dry fit all sump components
Determine any length changes to insure minimum required clearance between sump top and concrete
Confirm enclosure top and reservoir are level
Confirm sump reservoir and drain fitting are located on the same side to facilitate communication testing
If required, trim sump body extension using a carbide tipped blade or a masonry blade
The sump body extension is only component that can be trimmed
When using Adhesive Channel:
Insert channel mesh material provided with adhesive kit 360° around each joint
If the drain plug in the collar is removed, be sure the reducer fitting remains intact in the collar bushing. Remove only the ¼” drain plug.
Contractor must re-sand the mating surfaces before adhesive or layup application
Remove any rocks, and/or debris from adhesive channel
Sand and clean mating surfaces until white in color
Field cuts must be within ±¼” of square
Gaps between two joints greater than ¼” must be covered with a maximum width ½” tape
Maintain minimum of 4” on the sump body extension to complete interior joint

15. Adhesive & layup instructions

16. Adhesive & Layup Instructions
Check date on adhesive/layup container
Note the following dates on the Double-Wall Tank Sump Installation Checklist:
Date the kit was assembled
Date the kit was used
Temperature Considerations:
After mixing adhesive and hardener, you will have no more than 20 minutes to complete the application before the resin begins to harden
Recommended method for supplemental heat is to transform air to the tank sump while keeping ignition sources away

17. Adhesive Joint
With the tank sump components in place, make two consecutive 360° passes around the tank sump filling the adhesive channel evenly using all adhesive

18. Layup Joints
Gaps between two joints greater than ¼” must be covered with maximum width ½” tape to prevent resin from running into joint
Apply 3 layers of fiberglass layup, saturated with resin, 360° around tank sump, centered on joint

19. Assembled tank sumps

20. Assembled Tank Sumps
All piping and electrical penetrations (supplied by others) must seal the tank sump annular space
Do not connect the tank sump annular space to any other annular space

21. Post assembly test

22. Post Assembly Test Prior to backfilling:
The annular space may be pressure tested to a maximum of 3 psig during the installation
After pressurizing, apply a soap and water solution to the entire surface area on the inside and outside of the tank sump
Carefully inspect for leaks as indicated by continuous formation of bubbles
Maintain test pressure and continue inspection for 30 minutes. Then release pressure
Prior to backfilling:
The annular space may be pressure tested to a maximum of 3 psig during the installation.
Prior to pressurizing the tank sump, install a 15 psi air gauge with ¼ or ½ lb. increments.
After pressurizing, apply a soap and water solution to the entire surface area on the inside and outside of the tank sump.
Carefully inspect for leaks as indicated by continuous formation of bubbles.

23. Annular Space Monitoring

24. Annular Space Monitoring
Hydrostatically Monitored Annular Space
Monitoring solutions available
Brine – Calcium Chloride Solution
Propylene Glycol Solution
Vacuum Monitored Annular Space
Vacuum monitoring may be used utilizing the factory installed fitting
Maximum continuous vacuum level shall not exceed 5 psig (10.2”Hg)

25. Annular Space Monitoring
Fill the tank sump with the required number of gallons of monitoring fluid

26. Thank you
Questions ?

27. Agenda
Fiberglass Tank & Pipe Institute Overview

28. Member Companies Xerxes Corporation Containment Solutions
7901 Xerxes Avenue South
333 N Rivershire Dr., Ste 190
Minneapolis, MN 55431
Conroe, TX 77304
Phone:
Phone:
Fax:
Fax:
NOV Fiber Glass Systems
17115 San Pedro Ave., Ste 200 San Antonio, TX
L. F. Manufacturing
Hobas Pipe USA 1413 E. Richey Road Houston, TX Phone: Fax:
PO Box 578
Giddings, Texas 78942
Phone:
Fax:

29. Associate Member Companies
Interplastic Corporation 421 West 67th Street Kansas City, MO Olin Corporation 1510 Eldridge Parkway Houston, TX PPG Industries 400 Guys Run Rd. Cheswick, PA Composite Polymers, Ashland Inc Blazer Parkway Dublin, OH AOC LLC 955 Highway 57 Collierville, TN 38017