Containment Solutions Fiberglass Storage Tank Installation Instructions and Operating Guidlines

Question 1

Can the truck driver delivering a Containment Solutions tank manually unload the tank by himself? (Containment Solutions, Section 2.1)

Answer 1

no

Question 2

How many of the lifting lugs on a tank must be used when the tank is lifted? (Containment
Solutions, Section 2.3)

Answer 2

The number of lugs listed on label adjacent to the lifting lugs

Question 3

Under what circumstances can a tank be rolled? (Containment Solutions, Section 2.1)

Answer 3

For air and soap testing roll only on shipping pads, smooth surface free from thing that could harm tank like rocks or hard objects

Question 4

What are the only materials that can be used to replace all the native soil that has been excavated? (Containment Solutions, Section 3)

Answer 4

Specified backfill

Question 5

Who should certify that backfill meets all required specifications? (Containment Solutions, Section 3)

Answer 5

the suplier should supply written cerification and analysis to installer

Question 6

What is the range of particle sizes allowed when gravel is used for a backfill material? When crushed stone is used? (Containment Solutions, Section 3)

Answer 6

Pea gravel 3/4 in with no more than 5% passing through a #8 sieve and crushed stone or gravel 1/2 inch with no more than 5% passing through a #8 sieve

Question 7

What is the minimum dry gravel density permitted for Containment Solutions tank backfill? (Containment Solutions, Section 3)

Answer 7

a mininum of 95lb per cubic foot

Question 8

What is the suggested recipe for a soapy water solution to use when soaping the tank in warm weather? (Containment Solutions, Section 4)

Answer 8

5 gallons of water 8ozs of household dish soap

Question 9

When conducting a pre-installation air/soap test in freezing conditions, what is the
suggested recipe for the soap solution? (Containment Solutions, Section 4)

Answer 9

4 gallons of wate
8oz househould dish soap
1 gallon window washer fluid

Question 10

What parts of the tank should be covered with the soap solution? (Containment Solutions, Section 4)

Answer 10

For single wall or dry annular tanks entire tank
for tanks with liquid filled annular space cover only accesories and fittings

Question 11

What must be done if pre-installation testing uncovers a leak in a Containment Solutions tank? (Containment Solutions, Sections 4)

Answer 11

Discontinue installation and call field service for repair

Question 12

What must be done to fitting plugs prior to pressurizing the tank for the pre-installation air test? (Containment Solutions, Section 4)

Answer 12

They must be replaced with plugs compatible with the product stored in the tank

Question 13

What is the maximum test pressure allowed for four foot through 10 foot diameter tanks?
For 12 foot diameter tanks? (Containment Solutions, Section 4)

Answer 13

4 -10ft 5psig
12ft 3psig

Question 14

What device is recommended to prevent over-pressurizing the tank? (Containment
Solutions, Section 4)

Answer 14

Pressure relief device

Question 15

How long should the test pressure be maintained? (Containment Solutions, Section 5)

Answer 15

30 minutes

Question 16

How large should the increments be on the air gauge used to monitor the pressure on the
tank? (Containment Solutions, Section 4)

Answer 16

Maximum full scale of 15 psig with 1/2 psig or smaller increments

Question 17

What parts of the tank should you keep your distance from while the tank is under pressure?
(Containment Solutions, Section 4)

Answer 17

endcaps, manways, or fittings

Question 18

Should a tank be lifted while it is pressurized? (Containment Solutions, Section 4)

Answer 18

No lifting or hoisting while pressurized can cause death or serious injury

Question 19

Fittings, plugs, and gaskets should be tightened and retested when what are observed?
(Containment Solutions, Section 4.8)

Answer 19

Bubbles

Question 20

How many air pressure gauges should be installed to monitor the pressure when testing a double-walled tank with a dry interstitial space? (Containment Solutions, Section 5.3)

Answer 20

2 to test manifold
and one to annular space gauge and valve

Question 21

When pressurizing a double-walled tank with a dry annular space for the pre-installation air/soap test, to which type of tank fitting (primary tank fitting or monitoring fitting) should the hose from the air supply (compressor) be connected? (Containment Solutions,
Section 5.3)

Answer 21

Tank testing mainfold connected to the primary tank fitting

Question 22

What is the procedure for pressurizing the interstitial space of a double-walled tank with a dry annular space? (Containment Solutions, Section 5.3)

Answer 22

with the primary tank pressurized, disconect air supply then open valve between primary tank and annular space to pressurize the annular space using existing pressure, while under pressure soap fittings and manways and inspect, they close valve to annular and open valve to vent primary tank. Maintain pressure on annular space for 30 min for any loss of pressure.soap and watch for bubbles, after testing release pressure

Question 23

What is the procedure for detecting leaks in the outer wall of a double-wall tank with a dry annular space? (Containment Solutions, Section 5.3)

Answer 23

Soaping and watching for bubbles and watching pressure gauge for drops in pressure

Question 24

Why should you not connect the air supply directly to the annular space monitoring fitting?
(Containment Solutions, Section 5.4)

Answer 24

Tank damage will result

Question 25

What should an individual look for when the plug from the reservoir fitting in a hydrostatically monitored tank is removed? (Containment Solutions, Section 5.5)

Answer 25

green monitoring fluid

Question 26

How can a person tell if there is a leak in the outer wall of a hydrostatically monitored tank before it is installed? (Containment Solutions, Section 5.5)

Question 27

For a 12 foot diameter tank, what is the minimum clearance required between tank sides and ends and the banks of the excavation? (Containment Solutions, Section 6.1)

Answer 27

the monitoring fluid will leave a green trace on the tank

Question 28

What types of soil are considered to be unstable? How are unstable soils technically defined? (Containment Solutions, Section 6.2)

Answer 28

muck, bog ,peat, quick sand, area with flowing water or landfill Soil less tahn 750lbs /sq ft cohesion per ASTM D2116, they have a beating capacity of less than 3500lbs/sq ft

Question 29

What is the minimum depth of the backfill bed for a tank in a dry hole? (Containment Solutions, Section 8)

Answer 29

12-24inches

Question 30

When a concrete or asphalt pad is used at grade as part of the tank cover material, how far beyond the tank outline in all directions must the pad extend? (Containment Solutions, Section 8)

Answer 30

At least 12inches beyond tank perimeter in all directions

Question 31

What is the maximum burial depth (measured from the tank top to grade) allowed for a fiberglass tank in both traffic and non-traffic conditions? (Containment Solutions, Section 8)

Answer 31

7 ft

Question 32

What are two options for meeting the cover requirements of four through 10 foot diameter O/C tanks that do not have mechanical anchoring in non-traffic conditions? (Containment Solutions, Section 8)

Answer 32

24 inches of backfill or 12inches backfill and 4inches reinforced concrete

Question 33

What does filter fabric do? (Containment Solutions, Section 7)

Answer 33

Allows for passage of water but prevents migration between backfill and native soil

Question 34

What are four soil conditions where Containment Solutions requires the use of filter fabric? (Containment Solutions, Section 7)

Answer 34

Areas subject to tidal conditions, frequently changing ground water conditons, water conditions with Silty soil, Muck bog peat swap landfill type areas where soil is unstable

Question 35

Why is plastic not considered to be an effective filter fabric material? (Containment Solutions, Section 7)

Answer 35

It may tear or degrade over time

Question 36

What is the purpose of anchoring a tank? (Containment Solutions, Section 9)

Answer 36

to prevent property damage and tank failures due to bouyant conditions ( flooding, water tables, and trapped water) and other weather hazards

Question 37

What are two common methods of mechanically anchoring a tank? (Containment Solutions, Section 9)

Answer 37

Deadmen anchors and concrete anchor pad

Question 38

If water is likely to enter the tank hole, but you do not wish to mechanically anchor the tank, what alternative procedure can you use to keep four through 10 foot diameter Containment Solutions tanks from floating? (Containment Solutions, Section 10)

Answer 38

Ballasting

Question 39

What type of anchor straps are required for use with Containment Solutions tanks? (Containment Solutions, Section 9.7)

Answer 39

Containment Solutions anchor straps

Question 40

What is the proper distance between anchor points when deadmen are used? When a concrete anchor pad is used? (Containment Solutions, Section 9.7)

Answer 40

For deadmen place inside edge of deadmen at tank shadow For anchor pad position anchor points 6inches from tank shadow

Question 41

How closely must anchor points in concrete pads or deadmen line up with the anchor strap locations on the fiberglass tank? (Containment Solutions, Section 9.7)

Question 42

At what locations on a fiberglass tank must the anchor straps be placed? (Containment Solutions, Section 9.7)

Answer 42

at the designated anchor ribs

Question 43

What dimension of the tank should be measured before and after tightening anchor straps to see if anchor straps have been over tightened? (Containment Solutions, Section 9.7)

Question 44

What should be the dimensions (length and width) of a concrete anchor pad for an Containment Solutions tank that is 25 feet long and eight feet in diameter? (Containment Solutions, Section 9.14)

Question 45

What should be the height and width dimensions of deadmen used to anchor six through eight foot diameter tanks with a minimum burial depth as specified by the manufacturer? (Containment Solutions, Section 9.13)

Question 46

What must be done to the first and second 12-inch lifts of backfill placed around a fiberglass tank? What is the recommended tool for doing this? (Containment Solutions, Section 11.3)

Question 47

At what point in the backfilling process should a tank be filled (ballasted) with water or product? (Containment Solutions, Section 11.3)

Question 48

What is the minimum bedding thickness for a fiberglass tank installation in a wet hole? (Containment Solutions, Figure 11-3)

Question 49

Fiberglass tanks must be vented so that the maximum pressure or vacuum in the tank does not exceed _______ psig. (Containment Solutions, Section 14)

Question 50

What must be independent of tank vents? (Containment Solutions, Section 14)

Question 51

If the monitoring cavity (interstitial space) of a double-walled tank is vented, how must this be accomplished? (Containment Solutions, Section 14)

Question 52

What should be installed on the tank and delivery truck if deliveries are to be pumped intoan underground fiberglass tank? (Containment Solutions, Section 15)

Question 53

What will happen to a fiberglass tank if it is overfilled during a pressurized delivery? (Containment Solutions, Section 15)

Question 54

Is it necessary to vent the interstitial space (monitoring cavity) of a fiberglass tank with a hydrostatic (liquid filled interstitial space) monitoring system? (Containment Solutions, Section 17)

Question 55

How can the joint between the containment collar and the sump be tested to see if it is liquid tight? (Containment Solutions, Section 18)