CSA Z260:25 ✓ Most Recent

Preface 

This is the second edition of CSA Z260, Pipeline system safety metrics . It supersedes the previous edition published in 2019. This Standard provides requirements to establish a set of common safety metrics for pipeline systems along with an approach that can be used across the pipeline industry and regulatory jurisdictions for categorizing unintentional pipeline system releases and developing leading indicators. Mandatory reporting requirements are defined by regulatory agencies, and this Standard does not supersede incident reporting requirements set by these agencies. This Standard is intended for use in the process and performance improvement of pipeline system safety and communicating pipeline system safety performance where organizations have discretion in setting metric definitions. The major revisions to this edition include the following: a) addition of hydrogen and hydrogen blends to the scope (see Clause 1.1); b) addition of gas distribution systems to the scope (see Clause 1.2); c) exclusion of refuelling facilities and injection wells from the scope of this Standard (see Clause 1.3); d) revision of harm thresholds for Tier 1 and Tier 2 events, including injuries and medical aid, evacuations, a release of service fluid into water, a release that results in a death of wildlife, and direct cost threshold of fire of a Tier 2 release; Table 2– quantitative thresholds; and quantitative thresholds for oilfield water (see Clauses 5.4 and 5.5); e) updates to guidance for leading indicators (see Annex B); f) updates to classification examples (see Annex C); and g) updates to commentary (see Annex D). In developing this Standard, previous and existing standards were used to provide the basis and background as appropriate. These include, but are not limited to, legislation, best practices, policies, standards, and applicable codes. CSA Group and the Z260 Technical Committee acknowledge the contributions of the American Petroleum Institute (API) and its employees to provide input to this Standard and its industry-wide approach to pipeline system safety metrics. CSA Group acknowledges that the development of this Standard was made possible, in part, by the financial support of the Canadian Energy Pipeline Association (CEPA) and its member organizations. This Standard was prepared by the Technical Committee on Pipeline System Safety Metrics, under the jurisdiction of the Strategic Steering Committee on Petroleum and Natural Gas Industry Systems, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. 

Scope 

1.1 Service fluids 

This Standard applies to liquid and gaseous energy systems that convey a) liquid hydrocarbons, including crude oil, multiphase fluids, condensate, and liquid petroleum products; b) natural gas liquids and liquefied petroleum gas; c) oilfield water; d) oilfield steam; e) liquid or dense phase carbon dioxide; or f) gas, including but not limited to natural gas, fuel gas, hydrogen and hydrogen blends, compressed air, carbon dioxide, and nitrogen. See Figures 1 and 2. Notes: 1) Non-hydrocarbon products used as process fluids and transported by operating companies by pipeline or within pipeline facilities are considered within the scope of this Standard, provided that those products are used in facilities connected to the pipeline system. 2) Fluids used within equipment supporting the pipeline system operation, including consumables such as lubricating or hydraulic fluids, are considered within the scope of this Standard, provided that the equipment is connected to the pipeline system at the time of the pipeline system safety event (PSSE). 

1.2 Stations and equipment 

This Standard applies to a) piping and equipment in onshore liquids pipelines, tank farms, pump stations, pressure-regulating stations, and measuring stations; b) oil pump stations, pipeline tank farms, and pipeline terminals; c) pipe-type storage vessels; d) carbon dioxide pipelines; e) piping and equipment in onshore gas pipelines, compressor stations, measuring stations, and pressure-regulating stations; f) gas storage lines, and pipe-type and bottle-type gas storage vessels; g) loading and unloading facilities for tankers or barge, truck, and rail when connected to the process; and h) gas distribution systems. See Figures 1 and 2, and Annex A. Note: Refer to Annex D for more information. 

1.3 Exclusions from standard application 

This Standard does not apply to the following facilities and asset classes: a) gas piping beyond the outlet of the customer’s meter set assembly (e.g., piping covered by CSA B149.1); b) abandoned piping; c) in-plant piping for potable, make-up, boiler feed, or fire suppression water; d) vent piping for waste gases of any kind operating at or near atmospheric pressure; e) refuelling facilities; f) hydrocarbon storage in underground formations and associated equipment; g) piping in natural gas liquids extraction plants, gas processing plants, gas manufacturing plants, industrial plants, and mines; h) oil and gas production facilities; i) injection wells (e.g., CSA Z624 and CSA Z625); and j) liquefied natural gas (LNG) facilities, oil refineries, terminals other than pipeline terminals, and marketing bulk plants. Notes: 1) For Items f) and h), users of this Standard should refer to IOGP Report 456 for metrics and guidance specifically focused on wells, production facilities, and storage in underground formations. 2) For Items g) and j), users of this Standard should refer to ANSI/API RP 754 for metrics and guidance specifically focused on refineries, processing plants, and LNG facilities. 

1.4 Exclusions from PSSEs in metrics 

The following are not covered within this Standard as PSSEs or metrics: a) planned and controlled venting or purging; b) releases during transport of service fluids by means other than pipeline (e.g., road, rail, or ship) except when connected to the pipeline system for the purpose of loading and unloading; c) emissions that are permitted by a regulatory authority and are within the permitted limits; d) office, shop, and warehouse building events (e.g., office fires, spills, personnel illness, etc.); e) personal safety events (e.g., slips, trips, falls) that are not directly associated with on-site response or exposure to a PSSE; f) loss of primary containment from ancillary equipment not connected to the pipeline system (e.g., small sample containers); g) activities associated with oil and gas pipeline system construction quality assurance, quality control, and research and development and laboratories; h) releases during new oil and gas pipeline system construction that are positively isolated (e.g., blinded or air gapped) from a pipeline or process prior to commissioning and prior to the introduction of any service fluids. This includes trenchless methods such as horizontal directional drilling and boring (i.e., drilling mud releases); i) releases during onsite fuelling operations of mobile and stationary equipment (e.g., pick-up trucks, diesel generators, heavy equipment); j) releases of hydraulic fluids from vehicles used onsite; k) releases of water used for hydrostatically testing a pipeline (except where voluntarily included by the operating company as a leading indicator); l) metrics used for greenhouse gas and carbon footprint emissions and accounting; or m) metrics used for environmental management not related to spills and unintentional releases. 

1.5 Terminology 

In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.