API 1615 Installation of Underground Petroleum Storage Systems Flashcards
What is an extractor fitting? (API 1615, Section 2.29)
A fitting that threads into the bung which can have a riser on top along with a vent attached to the side of the extractor fitting.
Commonly has threads within the fitting for testing purposes
What is an interstice? (API 1615, Section 2.42)
The area outside the primary tank but still within the outer tank wall. Can be liquid filled or be empty space
What are some of the functions of a sump? (API 1615, Section 2.87)
Give technicians access to tank top without digging, give space for motors and pumps, be a leak detection basin for piping transitions.
What things should be included in a preconstruction site-specific plan? (API 1615,
Section 6.1.1)
pre-construction site-specific plan should include project details, site analysis, safety protocols, risk management, and communication strategies, ensuring a well-organized and safe construction process
Why is it important to install a property designed corrosion protection system when installing new steel tanks next to an existing steel UST system? (API 1615, Section 7.2.2)
If not installed correctly then the new system will cause the existing tank to corrode faster then it should
Where should underground tanks being stored temporarily at a construction site be located?
(API 1615, Section 9.1.4)
What type of chock should be used to prevent a tank from moving during storage?
(API 1615, Section 9.1.5)
Non-metallic or sharp, non abrasive and sturdy
What measurement should be taken prior to installation of an underground tank? (API
1615, Section 9.2.4)
Tank diameter to a marked bung in order to measure deflection when installed
Prior to pressurization in a preinstallation tank test the tank should be .
(API 1615, Section 9.5(b))
Factory plugs should be removed and steel plugs should be doped and tightened
What does the term “interstitial space” or “annular space” refer to? (API 1615,
Section 9.6.1)
secondary con-
tainment in which a storage tank is constructed with two
shells, or walls, with an interstice between to contain a
release from the primary tank.
When should piping be isolated and tested? (API 1615, Section 9.7.1)
After install but before the system is put into use. Before backfilling the trench
What are the API recommendations for depth of cover over tanks that are located in traffic
areas? (API 1615, Section 11.4)
For tanks in traffic areas, a minimum depth of cover is required to protect them from damage. This typically involves 3 feet of earth cover, or 18 inches of well-tamped earth plus 6 inches of reinforced concrete or 8 inches of asphaltic concrete.
What conditions can cause a tank to float? (API 1615, Section 10.2.1)
High water table, bathtub effect, not being ballasted correctly, no proper hold down force( hold down pad, deadmen, backfill force)
If _______can be expected, tanks should be anchored. (API 1615, Section 10.3.1)
High water table
How should anchor straps used with concrete anchor pads or deadmen be installed?
(API 1615, Section 10.3.3)
On the tank where the manufacturer recommends or has it marked.
How should tanks of different diameters be aligned? (API 1615, Figure 11)
Who can provide professional assistance in determining anchoring requirements?
(API 1615, Section 10.3.1)
The manufacturer of the tank
What should occur prior to installation of submersible pumps? (API 1615, Section 10.4.3)
Take a measurement of riser pipe to bottom of tank top ensure 4” off bottom.
What are the Environmental Protection Agency’s corrosion protection requirements for new tanks and product piping? (API 1615, Section 15.1)
How should metallic anchor straps be isolated from a steel tank? (API 1615, Section 10.3.5)
With dielectric material
How should underground piping be sloped? (API 1615, Section 13.2.2)
1/8” per foot
What should be avoided in order to decrease problems when tightness testing? (API 1615,
Section 13.2.4)
Loose fitting without thread sealant, bellies in piping.
What material should be used to assemble the aboveground portion of vent piping? What materials should not be used? (API 1615, Section 13.3.3)
Schedule 40 steel pipe.
Should not use pvc, plastic, rubber, fiberglass
What should be the minimum height of vent outlets above the adjacent ground surface? In what direction should vapors be discharged? (API 1615, Section 13.3.3)
12’ above ground dispersed vertically into the air