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PA DEP Tank Installers Training > PEI RP200 – Aboveground Motor Vehicle Fueling > Flashcards

PEI RP200 – Aboveground Motor Vehicle Fueling Flashcards

1
Q

To which types of tanks do the recommended practices in this document apply? (PEI RP200-13, Section 1.3)

A

These recommended practices apply to aboveground, stationary, shop-fabricated tanks and associated piping and equipment intended to dispense gasoline, diesel and related fluids into motor vehicles at commercial and retail service stations and marinas.

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2
Q

What type of a plan may be required by federal regulations if a facility could reasonably be expected to discharge product to navigable waters? (PEI RP200-13, Section 1.8)

A

A Spill Prevention, Control, and Countermeasure (SPCC) Plan

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3
Q

From whom should approval of aboveground storage facilities be sought? What other agencies may be involved in granting approvals for aboveground tank installations? (PEI RP200-13, Section 1.9)

A

Approval of aboveground facilities needs to be obtained from the state and local jurisdictions.

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4
Q

How must aboveground tanks be positioned with regard to property lines and buildings? (PEI RP200-13, Section 2.3)

A

Aboveground tanks must be positioned to meet the setback and distance-from-buildings requirements of local jurisdictions.

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5
Q

How much space should be provided between tanks to allow for passage and inspection? (PEI RP200-13, Section 2.4)

A

1/6 of the sum of the adjacent tank diameters, but not less than 3 feet.

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6
Q

When aboveground tanks are installed at retail service stations, they are typically required to be separated by substantial distances from which parts of the facility? (PEI RP200-13, Section 2.6)

A

Tanks must typically be separated from dispenser islands, buildings, filling points, and property lines by substantial distances.

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7
Q

In general, how do requirements for commercial fleet facilities differ from requirements for retail service stations? (PEI RP200-13, Section 2.7)

A

Generally, no minimum separation is required between tanks and dispensers at commercial fleet facilities. Distances to property lines and buildings may also be less restrictive than those for retail facilities.

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8
Q

What traffic flow characteristics are desirable for the off-loading area for an aboveground tank? (PEI RP200-13, Section 2.10)

A

a) Except for below-grade, vaulted tanks, which can be filled by gravity, aboveground tanks are filled from pumping systems, located either on board the delivery transport or as a fixed component of the facility.
b) Locate the fill connection point so that tanks are clearly visible during delivery.
c) Ensure spill-containment equipment is installed at the fill connection point is capable of holding the maximum quantity of product contained in the delivery hose.
d) Minimize the maneuvering required to position delivery vehicles adjacent to fill pipes.
e) Protect aboveground tanks from vehicle collision damage by installing bollards, concrete wheel stops, fencing or other barriers.
f) Protect dispensing islands, platforms, and any associated piping, valves, or ancillary equipment from collision damage.

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9
Q

How shall aboveground tanks be protected from vandalism and accidental damage? (PEI RP200-13, Section 2.13)

A

By fencing and specify fence location, construction and height.

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10
Q

Where should aboveground tanks be located with regard to underground utilities or overhead power lines? (PEI RP200-13, Section 2.15)

A

Aboveground tanks should not be located above underground utilities or directly beneath overhead power lines.

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11
Q

When the ability of the soil beneath an aboveground tank to bear the weight of the fully loaded tank is questionable, what are three solutions that a storage system designer should consider? (PEI RP200-13, Section 3.3)

A

1) Replacing the subsoil;
2) Placing a reinforced concrete pad or slab on pilings or on grade; or
3) Stabilizing the soil with a geotextile or compacted mixture of hydrated lime or dry cement and pulverized soil

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12
Q

When constructing an aboveground tank foundation, what are appropriate materials to use for the base course? (PEI RP200-13, Section 3.5)

A

Crushed stone or a similar non-cohesive material that is free of organic matter and that will compact adequately.

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13
Q

How can a suitable foundation for vertical tanks be constructed? (PEI RP200-13, Section 3.6)

A

With a finished course of clean, compacted sand, gravel, or crushed rock that is placed over the base course.

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14
Q

Where is a sand cushion typically used when installing an aboveground tank? (PEI RP200-13, Figure 3.2)

A

Between a concrete foundation slab and the tank bottom.

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15
Q

How high above the surrounding ground surface should the surface on which a vertical tank bottom rests be located? (PEI RP200-13, Section 3.6)

A

At least 6 inches above the surrounding ground surface.

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16
Q

What materials may be used for constructing saddle supports for horizontal tanks? (PEI RP200-13, Section 3.7)

A

Steel or reinforced concrete and must be installed on a firm and stable foundation.

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17
Q

After setting a horizontal tank, how should any residual tilt be corrected? (PEI RP200-13, Section 3.7)

A

Full-width shims.

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18
Q

Under what circumstances should the saddle supports for horizontal tanks have two-hour fire protection? (PEI RP200-13, Section 3.7)

A

Saddles higher than 12 inches above the foundation have a minimum fire rating of 2 hours.

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19
Q

When tank saddles are not seal-welded to the tank shell, what materials should be used to isolate the tank shell from the saddle support? What materials are NOT acceptable? (PEI RP200-13, Section 3.7.1)

A

a) Dielectric material.

b) Roofing felt or concrete expansion-joint materials are not acceptable.

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20
Q

Aboveground tanks located in what type of area must be protected against flotation? (PEI RP200-13, Section 3.9)

A

Areas subject to flooding.

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21
Q

What is the purpose of constructing dikes around aboveground tanks and associated piping? (PEI RP200-13, Section 4.1)

A

To contain potential spills and releases from tanks, piping, and associated equipment within the dike.

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22
Q

What should be the minimum volumetric capacity of a diked area? Can local jurisdictions require additional capacity? (PEI RP200-13, Section 4.2)

A

a) The single largest tank plus 10 percent for rainwater allowances.
b) Local jurisdictions can potentially require an additional margin of safety.

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23
Q

Within the diked area, what should be the slope from the tank to the dike base? (PEI RP200-13, Section 4.7)

A

1 inch per 8 linear feet (1%).

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24
Q

What are appropriate materials for construction of dike walls? (PEI RP200-13, Section 4.3)

A

Earth, steel, concrete, or solid masonry.

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25
Q

What types of materials may be used to form an impervious barrier on the walls and bottom of a diked area? (PEI RP200-13, Section 4.4)

A

Specially formulated and well-compacted clay, solid pavement, coatings, or impervious-membrane liners.

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26
Q

How should piping and conduit be routed with respect to the dike walls and floor? (PEI RP200-13, Section 4.5)

A

Piping and conduit should pass over top of the dike.

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27
Q

What is the usual minimum distance between the outside base of the dike and any property line? (PEI RP200-13, Section 4.6)

A

To permit access for firefighting and protect adjacent buildings, ensure that the outside base of the dike is no closer than 10 feet from any property line that is, or can be, built upon.

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28
Q

Where should drainage control points for diked areas be located? (PEI RP200-13, Section 4.7)

A

Outside the diked area, protect them from physical damage, and be sure that they are accessible under fire condition.

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29
Q

What is the definition of “special enclosure” when referring to a flammable liquid storage tank? (PEI RP200-13, Section 5.10)

A

Special enclosures are liquid and vapor tight, not backfilled, and constructed of at least 6 inches of reinforced concrete.

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30
Q

What types of forces should tank vaults be designed to resist? (PEI RP200-13, Section 5.2)

A

Earthquakes, hurricane-force winds, and hydrostatic forces.

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31
Q

For vaults located aboveground, roofs should be constructed of materials weaker than materials used for construction of the walls and floor. Why is this? (PEI RP200-13, Section 5.2)

A

To ensure that in the event of an explosion, the thrust of the explosion will be directed upward.

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32
Q

What type of safety procedures must be followed when entering a tank vault? (PEI RP200-13, Section 5.3)

A

Confined space safety procedures

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33
Q

What are three requirements for normal tank vents for tanks installed inside of vaults? (PEI RP200-13, Section 5.4)

A

1) Extend outside the vault
2) Terminate not less than 12 feet above the general grade level
3) Located at least 5 feet from building openings

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34
Q

How should tank vaults be protected from vehicular collision? (PEI RP200-13, Section 5.8)

A

Bollards, posts, curbs, or berms.

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35
Q

Under what circumstance can a tank designed for use underground be used for aboveground storage? (PEI RP200-13, Section 6.1)

A

No circumstances

36
Q

Underwriters Laboratories standard 142 prescribes requirements for what type of tanks? (PEI RP200-13, Section 6.2.1)

A

UL 142 prescribes requirements for shop-fabricated horizontal and vertical, welded steel tanks not to exceed 50,000 gallon capacity for the aboveground storage of stable, noncorrosive liquids with a specific gravity not greater than water.

37
Q

What items should be checked for damage or imperfections prior to installation? (PEI RP200-13, Section 6.4)

A

Tanks and all other materials

38
Q

How should tanks be handled at the job site? (PEI RP200-13, Section 6.5 and WARNING)

A

On the job site, tanks should not be dropped, dragged, or handled with sharp objects. Any movement of the tank on the job site should be accomplished with lifting cable or chains attached to lifting lugs provided by the manufacturer. Do not lift with a chain around the tank shell or roll the tank. Use a spreader bar if the angle between the chain and the vertical exceeds 30 degrees. Attach guide lines to the tank ends to maintain control while the tank is suspended. When a tank is in a temporary position at the job site, chock it with tiers or wood to prevent rolling.

39
Q

What are two methods that should NOT be used to dispense product from aboveground tanks? (PEI RP200-13, Section 7.2)

A

1) Pressurizing the tank

2) Gravity flow

40
Q

In remote pumping systems, does the supply piping operate under pressure, suction or gravity? (PEI RP200-13, Section 7.2)

A

Under pressure

41
Q

At which tank openings should fire valves be installed? (PEI RP200-13, Section 7.3)

A

Any tank opening where stored product could flow by gravity.

42
Q

How many block valves should a piping system contain? (PEI RP200-13, Section 7.4)

A

Each connection to an aboveground tank, through which product normally flows, should be provided with a block valve that is located as close as practical to the shell of the tank.

43
Q

Under what condition will a pressure regulating valve installed underneath a suction pump allow product to flow? (PEI RP200-13, Section 7.2.1, Figure 7.2)

A

Only when the suction pump is operating, and a vacuum is present on the pump side of the valve.

44
Q

If a pressure regulating valve is installed in a suction pumping system, what is the maximum dispensing hose length allowed? Why is this? (PEI RP200-13, Section 7.2.1)

A

14 feet

45
Q

External fire valves should be constructed of what material? (PEI RP200-13, Section 7.3)

A

Steel or nodular iron

46
Q

What does an anti-siphon valve prevent? Where should it be located? (PEI RP200-13, Section 7.5)

A

Where liquid level in a tank is at a higher elevation that the supply piping or dispensing unit, a leak in the piping or dispenser can create a siphon and result in continuous release. For both suction and remote pumping systems, install a valve to prevent gravity discharge flow into the supply piping when the dispenser is not in use. Locate the valve adjacent to and downstream of the block valve at the tank outlet.

47
Q

Which portions of aboveground piping should be equipped with a pressure relief device? (PEI RP200-13, Section 7.7)

A

Any segment of piping that could be subjected to thermal expansion.

48
Q

How close to the tank bottom should an internal fill tube be installed? (PEI RP200-13, Section 8.2.1)

A

To within 6 inches of the tank bottom and that they be installed to minimize vibration

49
Q

Should gasoline and diesel tanks share the same fill piping? (PEI RP200-13, Section 8.2.1)

A

No

50
Q

What should be installed on the fill pipe if deliveries are to be made directly into the top of the tank? (PEI RP200-13, Section 8.2.2)

A

A quick connect adapter

51
Q

What is the leading cause of product release from aboveground tanks? (PEI RP200-13, Section 8.2.3)

A

Overfilling

52
Q

At what liquid level in an aboveground tank should an overfill alarm sound? (PEI RP200-13, Section 8.2.3)

A

When the liquid level of the tank approaches the maximum allowable fill level.

53
Q

When gauging systems are installed in aboveground tanks, what type of cover should be provided for the tank opening? (PEI RP200-13, Section 8.4)

A

Lockable, vapor tight, non sparking cover

54
Q

What is the maximum normal operating pressure for an aboveground tank? (PEI RP200-13, Section 8.5)

A

1.0 psig

55
Q

Why is normal venting necessary? (PEI RP200-13, Section 8.5.1, Figure 8-3)

A

To prevent tank distortion due to excess internal pressure or vacuum resulting from filling, emptying, or ambient temperature changes.

56
Q

What do emergency vents provide for? (PEI RP200-13, Section 8.5.2)

A

Vapor release in the event of excessive pressure build up resulting from exposure of the tank to fire.

57
Q

What are acceptable materials for aboveground piping? (PEI RP200-13, Section 9.2)

A

Threaded, flanged, or welded schedule 40 galvanized or painted/coated black steel pipe.

58
Q

What piping material should not be used for diesel fuel? (PEI RP200-13, Section 9.2)

A

Galvanized pipe

59
Q

How should underground piping associated with an aboveground tank be sloped? (PEI RP200-13, Section 10.4)

A

1/8 inch per foot (1%)

60
Q

In traffic areas, piping trenches for underground piping should be deep enough to allow for what thickness of bedding material? What thickness of compacted backfill material and paving? (PEI RP200-13, Section 10.4)

A

a) 6 inches of bedding

b) At least 18 inches of compacted backfill material and pavement over the piping

61
Q

When galvanic cathodic protection is applied to underground steel piping, what must be done to submerged pumps, dispensers, tanks and other metallic components that are NOT intended to be protected by the galvanic cathodic protection system? (PEI RP200-13, Section 11.5)

A

Electrically isolate structures that are protected with galvanic anodes from all other unprotected storage system components through the use of isolation bushings or flanges.

62
Q

What three items should tank coatings be inspected for prior to installing the tank? (PEI RP200-13, Section 11.3)

A

1) Thickness;
2) Pinholes (holidays); and
3) Hardness

63
Q

What type of leak detection should be installed on underground pressurized piping? (PEI RP200-13, Section 12.2.3)

A

For maximum environmental protection, secondary containment of the below grade piping with continuous monitoring in addition to a line leak detector is recommended.

64
Q

Why is it important to control vapor emissions during fuel transfer operations? (PEI RP200-13, Section 12.3)

A

For reducing air pollution

65
Q

Why should sensing devices used in interstitial spaces be easily accessible? (PEI RP200-13, Section 12.2.1)

A

For testing and maintenance

66
Q

What are four ways of performing volumetric methods of release detection? (PEI RP200-13, Section 12.2)

A

1) Tightness testing;
2) Automatic gauging;
3) Statistical inventory reconciliation; and
4) Inventory reconciliation

67
Q

In addition to state and local electrical codes, aboveground tank installations should conform to national electrical codes as well. What abbreviation is commonly used to refer to the national electrical code? (PEI RP200-13, Section 13.1)

A

NEC

68
Q

In the national electrical code, what is the distinction between Division 1 and Division 2 locations? (PEI RP200-13, Section 13.2)

A

a) Division 1: Flammable vapors are usually present in ignitable concentrations.
b) Division 2: Flammable vapors can be expected to be present infrequently and only under abnormal conditions.

69
Q

What is an “emergency shut-off?” Where is it located? What does it do? (PEI RP200-13, Section 13.4)

A

a) Switch that will cut off the power to all dispensing devices in the event of an emergency.
b) Locate the switch between 20 and 100 feet from the dispensers.

70
Q

What should be used to protect vertical tank bottoms that rest directly on soil or concrete? (PEI RP200-13, Section 11.3.1)

A

Coatings and/or cathodic protection systems.

71
Q

What should be done to electrical conduits entering or leaving classified areas to prevent the migration of fumes or vapors? (PEI RP200-13, Section 13.5)

A

Seal off conduits entering and leaving classified areas, as well as switches and other potential sources of ignition, to prevent the migration of fumes and vapors through the conduit.

72
Q

What is an “intrinsically safe” device? (PEI RP200-13, Section 13.6)

A

Intrinsically safe devices and wiring are incapable of producing a spark or sufficient heat to ignite flammable or combustible material.

73
Q

What should be done to protect aboveground tanks from lightning and static discharge? (PEI RP200-13, Section 13.7)

A

Grounding and bonding

74
Q

What type of gauge is recommended when conducting an air-and-soap test? What should be the maximum limit of the gauge? What should be used to prevent over-pressurization of the tank? (PEI RP200-13, Section 6.6.2)

A

a) Pressure gauges must have a scale that will permit detection of small pressure changes that might go undented on gauges with a broader range.
b) A maximum limit of 10 to 15 psig is recommended.
c) Use two gauges to reduce the chance of over pressurizing the tank due to gauge failure.

75
Q

When conducting an air-and-soap test, what is it that indicates the presence of a leak? (PEI RP200-13, Section 6.6.3)

A

The appearance of a leak is indicated by the appearance of soap bubbles.

76
Q

What is the maximum recommended pressure for testing vertical aboveground tanks? (PEI RP200-13, Section 6.6.3)

A

Pressurize vertical tanks to 2.5 psig.

77
Q

What is the maximum recommended pressure for testing horizontal aboveground tanks? (PEI RP200-13, Section 6.6.3)

A

Pressurize horizontal tanks to 5 psig.

78
Q

What organization publishes the national electrical code? (PEI RP200-13, Section 13.1)

A

National Fire Protection Association (NFPA)

79
Q

Where are emergency vents required? (PEI RP200-13, Section 8.5.2)

A

For both the tank and the interstice of secondarily constructed tanks.

80
Q

What features may normal tank vents also include? (PEI RP200-13, Section 8.5.1, Figure 8-3)

A

In addition to allowing the tanks to “breathe” normal tank vents may include features to exclude precipitation, prevent flame propagation, or remain closed until certain pressure or vacuum conditions are met.

81
Q

What is the maximum pressure allowed under emergency venting conditions? (PEI RP200-13, Section 8.5)

A

2.5 psig

82
Q

At what liquid level should flow into the tank be stopped? (PEI RP200-13, Section 8.2.3)

A

When the maximum allowable fill level is reached.

83
Q

What should be done if penetration through the dike wall is absolutely unavoidable? (PEI RP200-13, Section 4.5)

A

The penetration should be sleeved and sealed so that it is liquid tight.

84
Q

At what storage capacity must a SPCC plan be prepared?

A

1,320 gallons

85
Q

What’s the definition of a primary tank?

A

Liquid capacity exceeding 60 gallons

PA DEP Tank Installers Training (22 decks)

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