N.J. Admin. Code § 7:27B-3.15

Current through Register Vol. 56, No. 21, November 4, 2024

Section 7:27B-3.15 - Procedures for the direct detection of fugitive volatile organic compound leaks from gasoline tank trucks and vapor collection systems using a combustible gas detector

(a) The method in this section is applicable for the detection of fugitive VOC leaks from gasoline tank trucks and vapor collection systems. For the same circumstances as described above, any alternative test method shall be submitted to the Department for review pursuant to 7:27B-3.2(c), (d) and (e).

(b) This method is based upon the detection of VOC leaks from individual sources by a portable instrument. The instrument detector type is not specified but must meet the performance criteria of 7:27B-3.14(d) 4. This procedure is intended to locate and classify leaks only and shall not be used as a measure of mass emission rates from individual sources.

(c) The following is a summary of this method:

1. The detector is calibrated with a standard gas mixture to establish the response of the instrument. A representative sample of the fugitive emissions is drawn into the instrument. The response is read directly from the instrument meter.

2. For purposes of this procedure a single test shall be sufficient to establish the presence of a leak.

(d) The following is a list of equipment used in this method:

1. Probe: glass, stainless steel, or Teflon tubing as required by source gas conditions and equipped with a 1.0 inch (2.54 centimeter) tip spacer;

2. Pump: a leakless Teflon-coated diaphragm pump or other suitable pump capable of maintaining an appropriate flow to the detector;

3. Monitoring instrument as set forth below:

i. The monitoring instrument shall be certified as safe for operation in explosive atmosphere;

ii. The monitoring instrument detector shall be capable of measuring the leak concentration specified in the appropriate section of N.J.A.C. 7:27-16. Detector types meeting this requirement include but are not limited to catalytic oxidation, flame ionization, infra-red absorption, and photoionization; and

iii. The instrument shall be readable to within five percent of the specified leak concentration and shall have a response time of 30 seconds or less;

4. Standard calibration gas--at least 50 percent but less than 100 percent LEL of propane in air.

(e) The procedure for this section shall be as follows:

1. A presampling survey shall be conducted to locate components where potential leaks could occur;

2. Calibration shall be conducted as follows:

i. The instrument shall be operated according to the manufacturer's directions;

ii. Adjust the analyzer to zero according to the manufacturer's instructions; and

iii. Introduce the standard calibration gas into the instrument sample probe. Adjust the instrument meter readout to obtain the correct response. If unable to obtain the correct response within +/- five percent the instrument is unacceptable for use.

3. Sampling and Analysis shall be conducted as follows:

i. All leak testing shall be done during a loading operation;

ii. Place the instrument probe with the 1.0 inch (2.54 centimeters) spacer at the surface of the component interface where leakage could occur. Move the probe along the interface periphery while observing the instrument readout. If an increased meter reading is observed, slowly probe the interface where leakage is indicated until the maximum reading is obtained. Leave the probe at the maximum reading location for approximately two times the instrument response time. If the concentration reading is in excess of the range of the instrument, add the dilution assembly and sample as above using a correction factor to convert the measurements to the undiluted basis. Record the date, time, amount, and identity of the leaking components. See Appendix F for the required reporting form. (Any alternative reporting form shall be submitted to the Department for review pursuant to 7:27B-3.2(c) and (e).)

N.J. Admin. Code § 7:27B-3.15

Amended by R.1992 d.102, effective 3/2/1992 (operative March 28, 1992).
See: 23 New Jersey Register 1858(b), 24 New Jersey Register 792(a).
"Substances" replaced by "compounds".