New York Codes, Rules and Regulations
Title 16 - DEPARTMENT OF PUBLIC SERVICE
Appendices
Appendix 14-E

Guidance on Determining High Consequence Areas and on Carrying out Requirements in the Integrity Management Rule

I. Guidance on Determining a High Consequence Area

To determine which segments of an operator's transmission pipeline system are covered for purposes of the integrity management program requirements, an operator must identify the high consequence areas. An operator must use the methods defined in paragraphs (1) or (2) of subdivision (f) of section 255.903 of this Part to identify a high consequence area. An operator may apply one method to its entire pipeline system, or an operator may apply one method to individual portions of the pipeline system. (Refer to Figure 1 below for a diagram of a high consequence area.)

FIGURE 1

II. Guidance on Assessment Methods and Additional Preventive and Mitigative Measures for Transmission Pipelines

(a) Table 1 below gives guidance to help an operator implement requirements on additional preventive and mitigative measures for addressing time dependent and independent threats for a transmission pipeline operating below 30 percent SMYS not in a High Consequence Area (i.e., outside of potential impact circle) but located within a Class 3 or Class 4 Location.

(b) Table 2 below gives guidance to help an operator implement requirements on assessment methods for addressing time dependent and independent threats for a transmission pipeline in a high consequence area.

(c) Table 3 below gives guidance on preventive and mitigative measures addressing time dependent and independent threats for transmission pipelines that operate below 30 percent SMYS, in high consequence areas.

Table 1

Preventive and Mitigative Measures for Transmission Pipelines Operating Below 30% SMYS not in HCAs but in Class 3 and 4 Locations

Table 2

Assessment Requirements for Transmission Pipelines in HCAs (Re-assessment intervals are the maximum allowed)

Operator may choose to utilize CDA at year 14, then utilize ILI, Pressure Test, or DA at year 15 as allowed under ASME B31.8S

Operator may choose to utilize CDA at year 7 and 14 in lieu of P&M

Operator may utilize "other technology that an operator demonstrates can provide an equivalent understanding of the condition of line pipe"

Table 3

Preventive and Mitigative Measures Addressing Time Dependent and Independent Threats for Transmission Pipelines that Operate Below 30% SMYS, in HCAs