310 CMR, § 80.19 - Leak Detection
(1) Owners and
Operators shall equip UST systems with leak detection equipment.
(2) The Owner or Operator shall install,
calibrate, operate and maintain all leak detection equipment in accordance with
310 CMR 80.19 and
80.26,
and the manufacturer's specifications.
(3)
Requirements for
Tanks.
(a) Tanks (except tanks
used to supply regulated substance to emergency engines) installed on or after
January 1, 1989, and tanks used to supply regulated substance to emergency
engines installed on or after January 2, 2015, shall be equipped with a system
that continuously monitors interstitial space.
1. The interstitial monitors shall be
installed and operated in accordance with the manufacturers'
specifications.
2. The system shall
comply with
310 CMR
80.26(3).
3. The interstitial monitoring shall detect
leakage through the inner wall of any tank.
4. For UST systems using continuous vacuum,
pressure, or hydrostatic methods (including brine systems) of interstitial
monitoring, the method shall be capable of detecting a breach in the inner and
outer walls of the tank.
(b) Tanks, except tanks used to supply
regulated substance to emergency engines, installed before January 1, 1989,
shall be equipped with at least one of the leak detection methods listed 310
CMR 80.19(3)(b)1. through 4. No later than October 13, 2022, tanks used to
supply regulated substance to emergency engines that were installed before
January 2, 2015, shall be equipped with at least one of the leak detection
methods listed at 310 CMR 80.19(3)(b)1. through 4.
1. A system that continuously monitors
interstitial space.
a. The sensors shall be
installed in accordance with the manufacturers' specifications.
b. The system shall comply with
310 CMR
80.26(3).
c. The interstitial monitoring shall detect
leakage through the inner wall of any tank.
2. An in-tank monitoring system that is used
to test the tank at least once a month over the continuous period of time
prescribed by the manufacturer's specifications to determine if there is a
release or leakage. If the manufacturer's specifications do not prescribe a
continuous period of time, the continuous period of time shall be six hours.
The system shall be capable of detecting a release or leakage of 0.20 gallons
per hour with the probability of detection of 0.95 and a probability of false
alarm of 0.05 as determined by an independent testing laboratory using the U.S.
Environmental Protection Agency Standard Test Procedures for Evaluating Leak
Detection Methods (EPA-510-B-19-002, May 2019) or other equivalent test
procedures and complies with
310 CMR
80.26(4).
3. A continuous in-tank monitoring system
installed and operated in accordance with the manufacturers' specifications
that is capable of detecting a release or leakage of 0.20 gallons per hour with
the probability of detection of 0.95 and a probability of false alarm of 0.05
as determined by an independent testing laboratory using the U.S. Environmental
Protection Agency Standard Test Procedures for Evaluating Leak Detection
Methods (EPA-510-B-19-002, May 2019) or other equivalent test procedures and
complies with
310 CMR
80.26(5).
4. An in-tank monitoring system installed,
operated and maintained by a qualified person with inventory data analysis
conducted by a trained statistical inventory reconciliation (SIR) vendor. The
SIR testing or monitoring methods shall meet the following requirements:
a. Report a quantitative result with a
calculated leak rate;
b. Be capable
of detecting a release or leakage of 0.20 gallons per hour with the probability
of detection of 0.95 and a probability of false alarm of 0.05 as determined by
an independent testing laboratory using the U.S. Environmental Protection
Agency Standard Test Procedures for Evaluating Leak Detection Methods
(EPA/530/UST-90/006 510-B-19-002, May 2019) or other equivalent test
procedures;
c. Use a threshold that
does not exceed 1/2 the minimum detectible leak rate; and
d. Comply with U.S. Environmental Protection
Agency Standard Test Procedures for Evaluating Leak Detection Methods (EPA
510-B-19-004, May 2019) or other equivalent test procedures and with
310 CMR
80.26(6).
(c) Until
October 13, 2022, tanks used to supply fuel to emergency engines installed
before January 2, 2015 shall comply with at least one of the following leak
detection methods:
1. Leak detection
requirements at 310 CMR 80.19(3)(b)1., 2. 3. or 4.;
2. If the tank has a capacity of 1000 gallons
or less, weekly tank gauging in accordance with
310 CMR
80.26(7); or
(d) Owners and Operators of field-constructed
tanks with a capacity greater than 50,000 gallons capacity may use one of the
following methods of leak detection for each tank to satisfy the requirements
of 310 CMR 80.19(1):
1. Conduct an annual
bulk tank tightness test that can detect a release or leakage at 0.5 gallon per
hour;
2. Use an in-tank monitor to
perform leak detection at least every 30 days that can detect a release or
leakage of less than or equal to one gallon per hour. This method shall be
combined with a bulk tank tightness test that can detect a release or leakage
of 0.2 gallon per hour and be performed at least every three years;
or
3. Use an in-tank monitor to
perform leak detection at least every 30 days that can detect a release or
leakage of less than or equal to two gallons per hour. This method shall be
combined with a bulk tank tightness test that can detect a release or leakage
of 0.2 gallon per hour and be performed at least every two years.
4. Perform inventory control (conducted in
accordance with Department of Defense Directive 4140.25; ATA Airport Fuel
Facility Operations and Maintenance Guidance Manual; or equivalent procedures)
at least every 30 days that can detect a release or leakage equal to or less
than 0.5% of flow-through; and perform a tank tightness test that can detect a
release or leakage of 0.5 gallon per hour at least every two years.
(4)
Requirements for
Piping.
(a) UST systems
installed on or after May 28, 1999 shall have the following requirements for
regulated substance piping, except European suction systems and single-walled
siphon lines between tanks:
1. All regulated
substance piping shall have a system that continuously monitors interstitial
space as follows:
a. Sensors shall be
installed in the sump in accordance with the manufacturers' specification. If
there is no manufacturer's specification, the sensors shall be placed at the
lowest point in the sump.
b. The
system shall comply with
310 CMR
80.26(3).
c. The system shall detect regulated
substance in a sump that leaked through the inner wall in any portion of the
piping that routinely contains regulated substance.
2. In addition to complying with 310 CMR
80.19(4)(a)1., pressurized piping systems shall be equipped with an automatic
line leak detector that accurately detects a release or leakage of three
gallons per hour at ten p.s.i. in line pressure within one hour with the
probability of detection of 0.95 and probability of false alarm of 0.05. At UST
facilities that are staffed 24 hours per day, seven days per week, 365 days per
year, an automatic line leak detector may also be a continuous alarm that
alerts staff when there is regulated substance or pressure loss in a
pressurized product line of a pressurized pumping system.
3. European suction systems and siphon lines
between tanks are not required to have leak detection.
(b) UST Systems installed between January 1,
1989 and May 28, 1999 shall have the following requirements for regulated
substance piping, except European suction systems and single-walled siphon
lines between tanks:
1. Owners or Operators of
all regulated substance piping shall implement one of the following methods of
leak detection:
a. A system that continuously
monitors interstitial space in accordance with 310 CMR 80.19(4)(a)1.;
or
b. Quarterly visual inspections
of secondary containment ports and conduct of an annual tightness test of the
product piping line in accordance with
310 CMR
80.32; or
c. An in-tank monitoring system that is
maintained by a qualified person with inventory data analysis conducted by a
qualified statistical inventory reconciliation (SIR) vendor. The SIR testing or
monitoring methods shall:
i. Report a
quantitative result with a calculated leak rate;
ii. Be capable of detecting a release or
leakage of 0.20 gallons per hour with the probability of detection of 0.95 and
a probability of false alarm of 0.05 as determined by an independent testing
laboratory using the U.S. Environmental Protection Agency Standard Test
Procedures for Evaluating Leak Detection Methods (EPA 510-B-19-0002, May 2019)
or other equivalent test procedures;
iii. Use a threshold that does not exceed
1/2 the minimum detectible leak rate; and
iii. Use a threshold that does not exceed
1/2 the minimum detectible leak rate; and
iv. Comply with U.S. Environmental Protection
Agency Standard Test Procedures for Evaluating Leak Detection Methods (EPA
510-B-19-004, May 2019) or other equivalent test procedures and with
310 CMR
80.26(6).
2. In addition to
complying with 310 CMR 80.19(4)(b)1., pressurized piping systems shall be
equipped with an automatic line leak detector that accurately detects a release
or leakage of three gallons per hour at ten p.s.i. in line pressure within one
hour with the probability of detection of 0.95 and probability of false alarm
of 0.05. At UST facilities that are staffed 24 hours per day, seven days per
week, 365 days per year, an automatic line leak detector may also be a
continuous alarm that alerts staff when there is regulated substance or
pressure loss in a pressurized product line of a pressurized pumping
system.
3. European suction systems
are not required to have leak detection.
(c) UST Systems installed before January 1,
1989 shall have the following requirements for regulated substance piping,
except European suction systems and single-walled siphon lines between tanks:
1. Owners or Operators of all regulated
substance piping shall implement one of the following methods of leak
detection:
a. A system that continuously
monitors interstitial space in accordance with 310 CMR 80.19(4)(a)1.;
or
b. Quarterly visual inspections
of secondary containment ports and conduct an annual tightness test of the
product piping line in accordance with
310 CMR
80.32; or
c. An in-tank monitoring system that is
maintained by a qualified person with inventory data analysis conducted by a
trained statistical inventory reconciliation (SIR) vendor. The SIR testing or
monitoring methods shall:
i. Report a
quantitative result with a calculated leak rate;
ii. Be capable of detecting a release or
leakage of 0.20 gallons per hour with the probability of detection of 0.95 and
a probability of false alarm of 0.05 as determined by an independent testing
laboratory using the U.S. Environmental Protection Agency Standard Test
Procedures for Evaluating Leak Detection Methods (EPA 510-B-19-002, May 2019)
or other equivalent test procedures;
iii. Use a threshold that does not exceed
1/2 the minimum detectible leak rate; and
iv. Comply with U.S. Environmental Protection
Agency Standard Test Procedures for Evaluating Leak Detection Methods (EPA
510-B-19-004, May 2019) or other equivalent test procedures and with
310 CMR
80.26(6).
d. For single-walled pressurized
piping systems and single-walled gravity piping systems, conduct an annual
tightness test in accordance with
310 CMR
80.32; or
e. For Non-European suction systems that do
not have secondary containment, conduct an annual tightness test in accordance
with
310 CMR
80.32.
2. In addition to complying with 310 CMR
80.19(4)(c)1., pressurized piping systems shall be equipped with an automatic
line leak detector that accurately detects a release or leakage of three
gallons per hour at ten p.s.i. in line pressure within one hour with the
probability of detection of 0.95 and probability of false alarm of 0.05. At UST
facilities that are staffed 24 hours per day, seven days per week, 365 days per
year, an automatic line leak detector may also be a continuous alarm that
alerts staff when there is regulated substance or pressure loss in a
pressurized product line of a pressurized pumping system.
3. European suction systems are not required
to have leak detection.
Notes
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