R 324.1130 Requirements for certain gathering lines, flow lines, and facility piping.

Rule 1130. (1) A gathering line, installed after the effective date of these amendatory rules carrying gas with more than 300 ppm hydrogen sulfide shall be subject to the provisions for design, construction, testing, maintenance, and operation as specified in administrative rules promulgated under Act No. 165 of the Public Acts of 1969, as amended, being §483.151 et seq. of the Michigan Compiled Laws. (2) A flow line or facility piping, carrying gas from a class I H2S well and which is subject to a maximum working pressure in excess of 125 psig shall be subject to the provisions for design, construction, testing, maintenance, and operation as specified in administrative rules promulgated under Act No. 165 of the Public Acts of 1969, as amended, being §483.151 et seq. of the Michigan Compiled Laws. (3) A person or a permittee shall not install a flow line or gathering line, carrying gas from a class I H2S or class II H2S well, or modify an existing flow line or gathering line to serve additional class I H2S or class II H2S wells, unless all of the following provisions are met: (a) The person or permittee shall calculate the 100 ppm radius of exposure, using either the equation set forth in R 324.1102(c) or another dispersion model accepted by the supervisor. The calculation shall be based upon the reasonably expected concentration of hydrogen sulfide to be transported in the flow line or gathering line, the maximum actual operating pressure, and the volume of gas that could be released from the flow line or gathering line, accounting for any automatic shut-in systems and blocking valves that will be utilized. (b) If an existing structure used for public or private occupancy, an existing area maintained for public recreation or the edge of the traveled portion of an existing interstate, united states, or state highway falls within the 100 ppm radius of exposure, the person or permittee shall prepare a construction and operation plan that incorporates reasonable measures to reduce the potential for public exposure to hydrogen sulfide from a release that might occur. The construction and operation plan shall consider appropriate construction standards, routing alternatives, monitoring equipment, automatic controls for source shut- in, or other available engineering methods. The person or permittee shall submit the construction and operation plan to, and receive the approval of the supervisor or authorized representative of the supervisor. The supervisor or authorized representative of the supervisor shall have 30 days to approve the plan or to require modifications or additional information. (c) Repair and maintenance of an existing flow line or gathering line are exempt from the provisions of this subrule. (4) Gathering lines, flow lines, or facility piping are not subject to this rule if they are subject to the issuance of a certificate of public convenience and necessity by the Michigan public service commission under the provisions of Act 9 of the Public Acts of 1929, as amended, being §483.101 et seq. of the Michigan Compiled Laws or are subject to regulation by the Michigan public service commission under the provisions of Act No. 165 of the Public Acts of 1969, as amended, being §483.151 et seq. of the Michigan Compiled Laws.