Download Underground Storage Tank (UST) Tightness Testing: Multiple Choice Questions and Answers and more Quizzes Physics in PDF only on Docsity!
U3 ICC TANK TIGHTNESS TESTING WY
COMPLETE ACCURATE EXAM 170
QUESTIONS WITH DETAILED VERIFIED
ANSWERS 100% CORRECT ANSWERS
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"All of the following are considered part of the secondary containment system EXCEPT: a. Under dispenser containment b. Monitoring well c. Containment sensor
d. Double wall piping - CORRECT ANSWER=> b. Monitoring well"
"Recommended interstitial monitoring includes the following: a. Soil vapor monitoring b. Impervious liner with a well to measure any release c. Groundwater monitoring
d. Sensors installed in containment sumps - CORRECT ANSWER=> d. Sensors installed in containment
sumps" "A vapor collection tank (vapor pot) is located between the underground tanks and dispensers. It is designed to: a. collect and condense vapors so they can be measured and reported to the local air authority. b. allow collection of condensed vapors at a low point and a means to remove them. c. remove condensed vapors from the UST system to be disposed of when the tank reaches no more
than 95% full. - CORRECT ANSWER=> b. allow collection of condensed vapors at a low point and a
means to remove them." "When cool fuel is added to a tank with warmer fuel, the following is true: a. The fuel temperature will raise and the product will expand. b. The fuel temperature will lower and the product will contract
c. The fuel temperature will lower and the product will expand. - CORRECT ANSWER=> b. The fuel
temperature will lower and the product will contract" "All factors would cause inaccurate data collection during an overfill test on manifolded tanks, EXCEPT? a. different tank types; (steel / fiberglass) b. associated vapor pockets
c. difference in temperature
d. difference in diameters of tanks - CORRECT ANSWER=> d. difference in diameters of tanks"
"When manifolding tanks all are important, EXCEPT? a. same size of tanks (gallons) b. same diameter of tanks
c. same burial depth - CORRECT ANSWER=> a. same size of tanks (gallons)"
"What is the inherent error for calculating coefficient of expansion / contraction? a. 1-4% b. 5-9%
c. 10-15% - CORRECT ANSWER=> c. 10-15%"
"All factors affect a volumetric tank test except: a. Height and temperature of groundwater b. Waiting periods after deliveries c. Tank geometry
d. Evaporation - CORRECT ANSWER=> a. Height and temperature of groundwater"
"An UST system includes: - CORRECT ANSWER=> The tank & piping"
"According to the EPA, the drop tube should extend to within ___ inches of the bottom of the tank. -
CORRECT ANSWER=> 12""
"Data is collected and analyzed in terms of: - CORRECT ANSWER=> Sampling interval and test duration"
"Volumetric test results are more reliable when: - CORRECT ANSWER=> the leak is large"
"A fueling system is considered to be underground if ____% or more is below ground. - CORRECT
ANSWER=> 10%"
"While performing a tank test, an impressed current cathodic protection system: - CORRECT
ANSWER=> Should remain on at all times"
"A 10,000 gallon tank changes 4 degrees. How much of a volume change is that? - CORRECT
ANSWER=> 28 gallons"
"Inside a 4" pipe, the volume changes ½ gallon. How much does the level rise? - CORRECT ANSWER=>
".1 gallon is added to a 4" fill pipe. How much did the level rise? - CORRECT ANSWER=> 1.8""
b. Adversely affect product quality if compound to used to test tank is not inert c. Cause or enhance a leak during testing by exerting pressure higher than normal
d. Product evaporation - CORRECT ANSWER=> d. Product evaporation"
"With an acoustical non-volumetric test, all the following are true except: a. Does not provide a leak rate b. Potential increase in leak during the test period c. If the nitrogen pressure exceeds the tank's normal operating pressure there is a risk of rupture
d. The measured leak rate can be masked by a high water table. - CORRECT ANSWER=> d. The
measured leak rate can be masked by a high water table." "When a tracer chemical, such as helium, is used to pressurize an empty tank which test variable is most likely to mask a leak? a. Water table b. Vapor pocket c. Atmospheric pressure changes
d. Temperature change - CORRECT ANSWER=> a. Water table"
"A tank shipped with an interstice on which a vacuum is drawn: a. Must still have a soap water test of the entire exterior surface to check for potential leaks before it is installed b. Need not be subjected to the pre installation air/soap test provided the tank arrives within limits designed by the manufacturer c. Must be hydrostatically tested before installation d. Must have the vacuum increased to 15 Hg of vacuum for a period no less than 1 hour and not decay
beyond manufacturers allowable pressure loss. - CORRECT ANSWER=> b. Need not be subjected to the
pre installation air/soap test provided the tank arrives within limits designed by the manufacturer" "Prior to installing a 8' diameter double wall tank, the inner tank must be pressurized to a maximum of _____ psig for a period of ____ hour(s). a. 3, 1 b, 3, 24 c. 5, 1
d. 5, 24 - CORRECT ANSWER=> c. 5, 1"
"The proper procedure for pressurizing a double walled tank includes: a. Pressurizing the interstice before pressurizing the primary tank to conduct a soap water test first. b. Pressurizing the primary tank and the interstice immediately afterwards c. Pressurizing the primary tank and the interstice following the recommended test duration d. Pressurizing the primary tank and interstice simultaneously to avoid causing damage to either tank
wall. - CORRECT ANSWER=> c. Pressurizing the primary tank and the interstice following the
recommended test duration"
"The P.E.L. for benzene exposure is ___ ppm in an 8hour period or ___ ppm in 15 minutes max. -
CORRECT ANSWER=> 1 & 5"
"At what exposure level does benzene cause molecular change to the blood? - CORRECT ANSWER=> d.
25 ppm"
"An eductor is used to vapor free a tank. How tall does the exhaust need to be? - CORRECT ANSWER=>
12 feet"
"While pressure washing a tank, the wand should be: - CORRECT ANSWER=> Electrically bonded to the
tank" "Flammable liquids (class 1) are defined as having: a. A flash point of less than 100 degrees Celsius b. A flash point of 100 degrees Fahrenheit or more
c. A flash point of less than 100 degrees Fahrenheit - CORRECT ANSWER=> c. A flash point of less than
100 degrees Fahrenheit" "Gasoline vapors are: a. Lighter than air
b. Heavier than air - CORRECT ANSWER=> b. Heavier than air"
"Gasoline vapors are defined as having: a. Low vapor pressure and high flash point b. High vapor pressure and high flash point c. High vapor pressure and low flash point
d. Low vapor pressure and low flash point - CORRECT ANSWER=> c. High vapor pressure and low flash
point" "All of the following are included in the fire triangle, except: a. Ignition source b. Fuel c. Inert gas
d. Oxygen - CORRECT ANSWER=> c. Inert gas"
"The European suction system has air in it. What do you check first? a. The pump b. The check valve c. The tank
d. The suction line to the tank - CORRECT ANSWER=> b. The check valve"
"In a European style suction system, what are the release detection requirements? a. Monthly monitoring & line test annually
"Observation period of Vacuum level 10 Inches Hg if capacity is greater than 20,000. a. 2 hours b. 1 hour c. 10 minutes
d. 5 minutes - CORRECT ANSWER=> a. 2 hours"
"Observation period of Vacuum level 10 Inches Hg if capacity is less than 20,000. a. 2 hours b. 1 hour c. 10 minutes
d. 5 minutes - CORRECT ANSWER=> b. 1 hour"
"Tightness Testing should be capable of detecting a leak of as little as ______________ With a probability of detection of 0.95 and a probability of false alarm of ________. a. 760 mL/hr (0.20 gal/hr)/. b. 380 mL/hr (0.10 gal/hr), 0. c. 380 mL/hr (0.10 gal/hr), 0.
d.760 mL/hr (0.20 gal/hr)/ .9 - CORRECT ANSWER=> c. 380 mL/hr (0.10 gal/hr), 0.05"
"Area between primary and secondary containment of a double-walled tank. a. Interstitial Space b. Innerspace
c. Interspace - CORRECT ANSWER=> a. Interstitial Space"
"Hydro-static Pressure - CORRECT ANSWER=> Inward pressure on the outer wall of a UST from high
water table."
"What is Tank Secondary Containment Integrity Testing? - CORRECT ANSWER=> Test to check the
integrity of the liquid-filled secondary containment." "Federal UST Rules require overfill prevention alarm to automatically alert the transfer operator when the tank is no more than _____ percent full. a. 90% b. 95% c. 75%
D. 100% - CORRECT ANSWER=> a. 90%"
"Overfill Prevention Devices Commonly Used: a.Alarms b. Flow Shutoff Devices c. Vent restriction Devices.
d. All of the Above. - CORRECT ANSWER=> d. All of the Above"
"Secondary-Containment Systems Components: - CORRECT ANSWER=> Double-walled tanks
Double-walled piping Tank-top sumps Under-dispenser sumps Sensing devices"
"Leak Detection Method for Tanks - CORRECT ANSWER=> Automatic tank gauging
Groundwater monitoring Inventory control combined with periodic tightness testing Manual tank testing Interstitial monitoring Soil-vapor monitoring Statistical inventory reconciliation" "Clearly mark wells with a _______ equilateral triangle on a _____ background and a durable label, Warning against the accidental or intentional introduction of petroleum products into the well. a. black, white b. white, black c. red, white
d. Orange, White - CORRECT ANSWER=> a. black, white"
"Leak-Detection Methods for Piping - CORRECT ANSWER=> Automatic line-leak detector (pressurized-
piping systems only) Groundwater monitoring Periodic piping tightness testing Interstitial monitoring Soil-vapor monitoring Statistical inventory reconciliation Under-pump check valve (suction systems only)" "An automatic line-leak detector is a device that can detect a leak of ______ gallons per hour at a line pressure of __________ pounds per square inch within a period of one hour. a. 3, 10 b. 5, 10
c. 3, 5 - CORRECT ANSWER=> a. 3, 10"
"Under-Pump Check Valve - CORRECT ANSWER=> Check valve to detect leaks in suction piping
systems" "Cut suction stubs to allow at least ________ inches clearance from the tank bottom. a. 1 to 2 b. 3 to 5 c. 4 to 6
d. 6 to 12 - CORRECT ANSWER=> c. 4 to 6"
Vibration Noise Equipment accuracy Operator error Type of product Power variation Instrumentation limitation Atmospheric pressure Tank inclination"
"Volumetric Leak Detection Tests - CORRECT ANSWER=> Tests to identify leaks or determine leak rate
based on volume changes"
"Nonvolumetric Leak Tests - CORRECT ANSWER=> Tests to determine presence of leaks using
qualitative analysis" "Factors affecting accuracy or Leak Detection Methods a. water level b. power variations c.atmospheric pressure
d. all of the above - CORRECT ANSWER=> d. all of the above"
"Water Intrusion may indicate of a leak, especially in high groundwater situations. a. True
b. False - CORRECT ANSWER=> a. True"
"Interstitial space volume, temperature, water table, and product level in the primary tank affect Secondary Containment Integrity Testing. a. True
b. False - CORRECT ANSWER=> a. True"
"Steps for Secondary Containment Integrity Test - CORRECT ANSWER=> Liquid is added to the
interstitial space of the tank and the level is brought up into the interstitial riser The liquid level is monitored for a specified period of time If the liquid level is maintained, then the containment system has passed the test" "Federal UST Rules require overfill prevention Devices must be set to shut off flow when the tank is no more than _____ percent full a. 90% b. 95% c. 75%
D. 100% - CORRECT ANSWER=> b. 95%"
"When installing a foot valve or angle-check valve to hold prime in the suction line, use an ______________ at the tank/suction line connection to facilitate future testing a. angled fitting b. suction fitting
c. extractor fitting - CORRECT ANSWER=> c. extractor fitting"
"Under-Pump Check Valve Criteria - CORRECT ANSWER=> below-grade piping operating at less than
atmospheric pressure, below-grade piping sloped to drain back into the storage tank if suction is released, and the only check valve located directly below and as close as practical to the suction pump" "If the results of a test indicate the probability of a leak, either corrective action or additional testing to confirm the leak should be performed. a. True
b. False - CORRECT ANSWER=> a. True"
"Any liquid with a flashpoint greater than 100 degrees Fahrenheit is considered ____________. a. Combustible b. Retardant
c. Flammable - CORRECT ANSWER=> a. Combustible"
"The availability of _______________, not the ignition temperature, is the key indicator of a hazard. a. Vapor b. Fuel
c. Leaks - CORRECT ANSWER=> a. Vapor"
"Death will occur with oxygen concentration less than ____________ a. 6% b. 21%
c. 19.5% - CORRECT ANSWER=> a. 6%"
"Changes in temperature cause _________ in the product and in tank dimensions - CORRECT
ANSWER=> expansion or contraction"
"The rate of temperature change in the first day or two after addition of liquid is ________ degrees
Fahrenheit per hour - CORRECT ANSWER=> 0.02 to 0.25"
"Gasoline has an expansion coefficient of ________ gallons per degree Fahrenheit - CORRECT
ANSWER=> 0.00068"
"A change of __________ degrees Fahrenheit per hour in a 10,000 gallon tank may cause a 0.068 gallon
change in the product volume per hour. - CORRECT ANSWER=> 0.01"
"Water may enhance _________
c. 30 days - CORRECT ANSWER=> a. 6 months"
"Tanks must be monitored every ___________ days a. 180 b. 30 c. 60
d. 90 - CORRECT ANSWER=> b. 30"
"Cathodic protection. - CORRECT ANSWER=> Technique to prevent corrosion of a metal surface by
making that surface the cathode of an electrochemical cell." "UST systems that meet the performance standards in § 280.20 or § 280.21, and the monthly inventory control requirements in § 280.43 (a) or (b), may use tank tightness testing (conducted in accordance with § 280.43 (c)) at least every _________ until December 22, 1998, or until _____________ after the tank is installed or upgraded under § 280.21 (b), whichever is later; a. 5 years, 10 years b. 15 years, 20 years
c. 7 years, 13 years - CORRECT ANSWER=> a. 5 years, 10 years"
"__________ must Be equipped with an automatic line leak detector conducted in accordance with § 280.44 (a); and Have an annual line tightness test conducted in accordance with § 280.44 (b) or have monthly monitoring conducted in accordance with § 280.44 (c) a. Pressurized piping b. Suction piping c. Slanted piping
d. Irregular Piping - CORRECT ANSWER=> a Pressurized piping"
"Underground piping that conveys regulated substances under suction. a. Pressurized piping b. Suction piping c. Slanted piping
d. Irregular Piping - CORRECT ANSWER=> b. Suction piping"
"Suction piping Must either have a line tightness test conducted at least every __________ and in accordance with § 280.44 (b), or use a ________ monitoring method conducted in accordance with § 280.44 (c). a. 3 years, monthly b. year, annual
c. 60 days, liquid - CORRECT ANSWER=> a. 3 years, monthly"
"No release detection is required for suction piping that is designed and constructed to meet the
following standards: - CORRECT ANSWER=> The below-grade piping operates at less than atmospheric
pressure; The below-grade piping is sloped so that the contents of the pipe will drain back into the
storage tank if the suction is released; Only one check valve is included in each suction line; The check valve is located directly below and as close as practical to the suction pump." "___________ test of piping may be conducted only if it can detect a 0.1 gallon per hour leak rate at one and one-half times the operating pressure. a. Line Tightness b. ATG c. PLLD
d. MLLD - CORRECT ANSWER=> a. Line Tightness"
"Written documentation of all calibration, maintenance, and repair of release detection equipment permanently located on-site must be maintained for at least _________________ after the servicing work is completed, or for another reasonable time period determined by the implementing agency. a. Until next test b. 1 year c. Life of tanks
d. 6 years - CORRECT ANSWER=> b. 1 year"
"Any schedules of required calibration and maintenance provided by the release detection equipment manufacturer must be retained for _______________ from the date of installation a. Until next test b. 1 year c. Life of tanks
d. 5 years - CORRECT ANSWER=> d. 5 years"
"Upon confirmation of a release in accordance with § 280.52 or after a release from the UST system is identified in any other manner, owners and operators must perform the following initial response actions within 24 hours of a release or within another reasonable period of time determined by the implementing agency except: a. Report the release to the implementing agency (e.g., by telephone or electronic mail); b. Take immediate action to prevent any further release of the regulated substance into the environment; c. Identify and mitigate fire, explosion, and vapor hazards.
d. Perform an Inventory Reconciliation Report - CORRECT ANSWER=> d. Perform an Inventory
Reconciliation Report"
"Automatic Tank Gauge - CORRECT ANSWER=> Electronic Device that consists of a probe that
measures liquid level and a console that calculates the liquid volume in the UST."
"Ball Float valve - CORRECT ANSWER=> Overfill prevention device that operates by retricting the vent
opening in a UST, limiting the flow of fuel into the tank."
"Containment Sump - CORRECT ANSWER=> Liquid tight container that protects environment by
containing leaks and spills from piping, dispensers, pumps and related components."
"In a coaxial dispenser hose, the _________ flows through the inner hose and the ______ flow through
the outer hose. - CORRECT ANSWER=> product, vapor"
"To pass a secondary containment integrity test on underground product piping the pressure change in the piping must___ a. not drop below 3 psig b. not drop more than 1 psig c. maintain 5 psig for 5 minutes
d. Not change at all during test period - CORRECT ANSWER=> d. Not change at all during test period"
"For ball floats to operate properly _____ a. the ball must move freely in the droptube b. all tank-top fittings must be leak free and vapor tight c. the product level must be kept below 90% tank capacity
d. the drop-tube opening must be within 6 inches of the bottom of the tank - CORRECT ANSWER=> b.
all tank-top fittings must be leak free and vapor tight" "If an automatic vacuum shutoff valve is used in the line between the vacuum source and fitting on the plumbers plug when performing the dry test method for secondary containment integrity, it should be located____ a. anywhere in the line that is convenient b. on the outlet of the vacuum generating source c. at the inlet of the vacuum producing device
d. between the vacuum gauge and the plumbers plug - CORRECT ANSWER=> c. at the inlet of the
vacuum producing device" "If before starting the ATG functionality test the console shows an active or recurring history of leak detection related warnings ______ a. notify appropriate person before continuing test b. contact equipment manufacturer before continuing c. cancel all the warnings on the console and proceed with test procedure
d. note the warnings on the test data sheet and proceed with test procedure. - CORRECT ANSWER=> a.
notify appropriate person before continuing test" "Which condition does not effect the liquid filled test method for testing secondary containment integrity? a. Water table height b. Product level height c. Atmospheric Pressure
d. Interstitial Space Volume - CORRECT ANSWER=> c. Atmospheric Pressure"
"When performing the liquid filled test method for testing tank secondary containment integrity on double wall steel tanks ______ a. use a brine solution to top off the interstitial space
b. the volume of the interstitial will effect the accuracy of the test c. us the same fluid during the test as the monitoring fluid
d. It is necessary to remove all fluid in the interstitial space after the test is finished. - CORRECT
ANSWER=> c. us the same fluid during the test as the monitoring fluid"
"Before performing the liquid filled test method for tank secondary containment integrity ______ a. the primary tank must be emptied b. any bulk deliveries in progress must be completed before starting the test c. no bulk deliveries to the primary tank may occur less than 24 hours before the test d. no bulk deliveries to the primary tank may occur during the test or less than 8 hours before the test. -
CORRECT ANSWER=> d. no bulk deliveries to the primary tank may occur during the test or less than 8
hours before the test." "The vacuum generating device for the dry test method for secondary containment integrity ____ a. must be powered by compressed air b. must meet class 1, division 2 safety standards c. must be able to pull 10 inches of mercury vacuum d. Must meet class 1, division 1 safety standards and be capable of pulling 15 inches mercury vacuum -
CORRECT ANSWER=> d. Must meet class 1, division 1 safety standards and be capable of pulling 15
inches mercury vacuum" "To perform a secondary containment integrity test on underground piping ____. a. all dispensing activities must be stopped b. the primary pipe must be drained of product c. the primary product tank and any piping must be drained
d. The primary pipe may contain product and dispensing activities may continue - CORRECT
ANSWER=> d. The primary pipe may contain product and dispensing activities may continue"
"When performing a dry test method for secondary containment integrity, the automatic vacuum shutoff valve should be set at ____ a. the test vacuum level b. a max of 20 percent above est vacuum c. a minimum of 20 percent an no more than 4 inches Hg above test vacuum
d. a minimum of 10 percent and no more than 2 inches hG above the test vacuum - CORRECT
ANSWER=> d. a minimum of 10 percent and no more than 2 inches hG above the test vacuum"
"When performing a dry test method for secondary containment integrity, after connecting the line from the vacuum generating device to the plumber's plug and reaching the specified vacuum level ___ a. proceed with the test immediately b. allow the vacuum to stabilize for a minimum of 1 minute before proceeding with the test c. release the vacuum, pull the vacuum again to specified level and then proceed with the test
d. compensate for any evaporation that may occur before starting the test. - CORRECT ANSWER=> a.
compensate for any sump deflection that may occur" "Tank liquid level measurements are taken at the beginning and ending of a period of atleast ___________________ during which no liquid is added to or removed from the tank. a. 36 hours b. 12 hours
c, 24 hours - CORRECT ANSWER=> a. 36 hours"
"Only tanks 550 gallons or less may use _______ as sole method of release detection. Tanks 551- may use this in place of _________. Tanks 2000 gallons or greater ______ use this method to meet requirements of subpart 280.43 (a). a. Manual Tank gauging, manual inventory control, may not
b. Inventory Reconciliation, Automatic gauging, may - CORRECT ANSWER=> a. Manual Tank gauging,
manual inventory control, may not" "Main exposure route for Gasoline is a. eyes b. skin c. respiratory tract
d. digestive tract - CORRECT ANSWER=> b. skin"
"The vapor space of UST storing materials such as JP-4 and Jet B (and other liquids of similar vapor pressure between 2 and 4 psi) presents a hazard because the vapors are _____ a. normally in the flammable range b. Higher than the flammable range
c. Lower than the flammable range - CORRECT ANSWER=> a. normally in the flammable range"
"Kerosene grade aviation fuel is relatively _______ but the wide cut blends represent a significantly _______ fire hazard a. non- flammable, higher b. flammable, higher c. flammable, lower
d. non- flammable, lower - CORRECT ANSWER=> a. non- flammable, higher"
"A 4 inch fill pipe with a volume change of 0.05 gallons will cause a level change of about _______ a. 4 inches b. 1 inch c. .05 inch
d.5 inches - CORRECT ANSWER=> b. 1 inch"
"Drop tubes interfere with product circulation for those tightness test methods that try to achieve even temperature distribution using a circulating pump. Whenever possible they should ____ a. be replaced prior to testing
b. be removed prior to testing c. make no difference
d. be securely fastened to testing equipment. - CORRECT ANSWER=> b. be removed prior to testing"
"The best results are obtained with water level _____the level of the tank. a. above b. equal to c. below
d. in the middle of - CORRECT ANSWER=> c. below"
"The height to volume factor should be determined ________ a. by the regulating agency for standard tank dimensions b. specifically for each site because the geometry of each UST system is slightly different
c. per manufacturers recommendations - CORRECT ANSWER=> b. specifically for each site because the
geometry of each UST system is slightly different" "For manual tightness test methods, a sampling frequency on the order of ____ minutes is generally adequate. a. 6 b. 10 c. 15
d. 5 - CORRECT ANSWER=> d. 5"
"Generally conduits should have an internal diameter of _____ a. 2 inches b. 1 inch
c atleast 3/4 inch - CORRECT ANSWER=> c atleast 3/4 inch"
"Any time product is delivered to an UST, atleast _____ should elapse between delivery and testing. a. 6 hours b.5 hours c. 24 hours
d. 36 hours - CORRECT ANSWER=> a. 6 hours"
"For approximately every _____ degree Fahrenheit increase in temperature, Gasoline volatilization rate increases by about ____ a. 1, double b. 20, 1/ c. 25, double
d.30, 1/3 - CORRECT ANSWER=> b. 20, 1/3"
"How often should stage 2 Vapor recovery be tested? a. Daily b. Weekly.
