28
INTERNAL-DIAMETER MEASUREMENTS
Initial Internal Diameter (before backfilling)
________
Final Internal Diameter (after backfilling)
________
Initial Internal Diameter minus
Final Internal Diameter = Deflection
________
Verified by:
_________________________________
1. PREINSTALLATION
A.
Visual Inspection:
No evidence of damage (holes, cracks, gouges) in tank. (Document any damage found.) .....................................
B.
Monitoring-Fluid Tanks:
1. Check and record monitoring-fluid level in reservoir. ..............................................................................
2. Check for monitoring fluid inside and outside of tank...............................................................................
C.
Physical Test:
Preinstallation air/soap test completed in accordance with installation instructions.......................................................
D.
Backfill Material:
(Indicate which type.)1. Pea gravel or crushed stone as specified by XERXES. ........................................
2. Other (Requires specific approval by XERXES – describe.).................................
E.
Excavation:
Hole dimensions are correct per installation instructions for appropriate conditions .........................................................
F.
Internal Diameter Measurement:
The internal diameter of the tank is measured and documented (Initial Internal Diameter in Section 4 below)..
G.
Geotextile Utilized:
(Indicate one.)1. Yes
2. No ..........................................................................................................................
H.
Hole Condition:
(Indicate one.)1. Dry hole (Water is not anticipated to reach tank – area is not subject to flooding.)
................
2. Wet hole (Excavation may trap water – area is subject to flooding.)......................................
I.
Traffic Loads:
(Indicate one.)1. Traffic loads anticipated ..........................................................................................................
2. No traffic loads anticipated .....................................................................................................
J.
Anchoring:
Performed in accordance with installation instructions.
1. Deadmen 2. Full slab...................................................
K.
Fittings and Other Metal Components:
Coated to protect against corrosion. .....................................................................................
2. DURING INSTALLATION
A.
Backfill-material bed is level and is a minimum of 12 inches deep, over native soil or slab, before setting tank.
......................
B.
Tank Spacing:
Tanks are spaced correctly from each other and from excavation according to instructions.........................................
C.
Visual Inspection:
No evidence of damage is found after setting in hole..............................................................................................
D.
Hold-down Straps:
Positioned and secured according to installation instructions.
(See SECTION 6.4. of Installation Manual.) .........
E.
Backfill compacted:
Material has been tamped and/or compacted to fill all voids around tank............................................................
F.
Tank is properly ballasted during backfilling:
(wet-hole installation only).........................................................................................
G.
Tank(s) are buried at proper depth to conform to appropriate conditions:
(wet, dry, traffic or no traffic).......................................
3. POSTINSTALLATION
A.
Physical Test:
Air/soap test is completed according to installation instructions. ...................................................................................
B.
Internal Diameter Measurement:
The internal diameter of the tank is measured and documented (Final Internal Diameter in Section 4 below).............
C.
Monitoring-Fluid Tanks:
1. Check and record monitoring-fluid level in the reservoir _________ (inches). ........................................
2. Check for monitoring fluid inside tank. .....................................................................................................
D.
Installation Manual:
Deliver Installation Manual and Operating Guidelines to owner. .........................................................................
1.
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Complete this checklist, and keep it with copies of any written authorizations for variations and/or deviations received from Xerxes.
• Date of Installation
_____________________________________
Tank Size and Capacity
___________________________________
• Tank Type
SWT
DWT
MONITORING-FLUID DRY
MCT
OWS (Circle those that apply.)
UL Number __________
• Site Owner___________________________________________________________________________________________________
• Site Address _________________________________________________________________________________________________
• Installing Contractor __________________________________________________________________________________________
• On-Site Supervisor ____________________________________________________________________________________________
TANK INSTALLATION CHECKLIST
Fiberglass Underground Storage Tanks
Single-Wall (SWT), Double-Wall (DWT), Multicompartment (MCT) and Oil/Water Separators (OWS)
STREET
CITY
STATE
ZIP
CONTRACTOR NAME
STREET
CITY
STATE
ZIP
Verified by:
Verified by:
Verified by:
XERXES
CORPORATION
4. DEFLECTION MEASUREMENT
All tanks must be measured to determine vertical deflection.
Follow deflection-measurement instructions (Section 14) in the Installation Manual. An
initial internal-diameter measurement is taken and recorded as a point of reference. Subsequent internal-diameter measurements show tank deflection and
can be compared to the table below. Take each measurement from the same fitting using the same procedure.
END
CENTER
END
Mark the location where internal-diameter
measurements were taken.
External Tank
Diameter
(Ft.)
Allowable
Deflection
(In.)
4
1/2
6
3/4
8
1-1/4
10
1-1/2
12
1-3/4
®
