Heath Consultants Optical Methane Detector (OM) - Manual (Page 50)

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HEATH CONSULTANTS INCORPORATED
OPERATING STANDARDS - MOBILE OMD
TM SURVEY
GENERAL SPECIFICATIONS
I. Purpose of Survey
The purpose of the survey is to inspect any portion of a gas
system, which can be driven over, or adjacent to, to detect,
classify and report leakage locations that are venting to the
atmosphere.
II. Scope
A. Portion of System to be Inspected
The mobile survey is used in any area where the
vehicle can be driven in such a manner as to place the
light path of the OMD within the plume of methane
that is venting from the ground.
B. What is Inspected
Mobile survey provides coverage of mains, associated
valves, regulators and drips, the service taps at the
main and that portion of the service line located in or
near the street, alley or area where the survey vehicle
can be driven.
III. Personnel Required
The survey is conducted by a one or two-person team.
IV. Equipment Required
A. A vehicle containing the following:
1. OMD
2. Plunger Bar
3. Combustible Gas Indicator
4. Report Forms