API RP 1166-2010 pdf download.Excavation Monitoring and Observation.
1 Purpose and Scope To protect the public, excavation employees, and the environment by preventing damage to pipeline assets from excavation activ- ities. To provide a consistently applied decision making process for monitoring and observing of excavation and other activities on or near pipeline Rights-of -Way for “hazardous liquid” and “natural and other gas” transmission pipelines. Note: One call provisions and laws vary by state and it is the operator’s responsibility to be familiar with and comply with all applicable one-call laws 2 Definitions 2.1 originator: An individual or company who has identified and made notification of an excavation activity and / or initiated a one-call ticket 2.2 one-call center: An entity that administers a system through which a person can notify owners / operators of lines or facilities of proposed excavations 2.3 ticket: Documentation of the one-call request or the identified excavation activity – includes assigned number identifica- tion for tracking the ticket and all associated documentation 2.4 activity/request: Identified excavation activity or one-call ticket request. Examples include an activity notification from an aerial overflight, a one-call ticket issued from a one-call center, an internal notification made from pipeline maintenance employees during Right-of-Way patrol, or a notice from the general public 2.5 locate: To indicate the existence of a line or facility by establishing a mark through the use of stakes, paint or some other customary manner, that approximately determines the location of the line or facility. 2.6 excavation monitoring: Defined in Task Description Outline—Task E 2.7 excavation observation: Defined in Task Description Outline—Task G 3 Decision Node 1 Contact with Originator is not required if the exact work location is known and without question work or activity falls outside des- ignated company determined buffer zones.
4 Decision Node 2 Site visit is not required if contact with Originator has determined that, without question, work or activity falls outside company designated buffer zones. If any question exists, designated field personnel must conduct a site visit. 5 Decision Node 3 Locate is not required if site visit has determined that, without question, work or activity falls outside company designated buffer zones. If any question exists, designated field personnel must perform the locate. 6 Decision Nodes 4 & 5 Consideration should be given to the following when evaluating the proximity of work (or work impact) to pipeline, consider- ations include, but are not limited to: • Does the excavator have a proven record of following pipeline company procedures and requirements. • Has the excavation area been marked (well defined excavation area) • Has the pipeline operator or appointed representative confirmed the type of mechanized equipment to be used: – weight limit issues (See API RP 1102, Steel Pipelines Crossing Railroads and Highways) – reach/ extension capabilities • Are there equipment components (excavator treads or tracks) that may be within 5 or 25 feet (minimums), even though the excavation is not • Are effective isolation measures in place to protect pipeline from mechanized equipment (example would be a residential security fence) • Have pipeline bends been accounted for in marking the area Does the work plan indicate need for special considerations such as: (includes but is not limited to:) • Blasting* • Seismic testing* • Mining* • Quarry Operations* • Dredging* • Heavy Surface loading* • Multiple pipeline corridors* • Abandoned pipe segments* • Boring/directional drilling* • Pile drilling* * Note: the above may require special individual operator designated procedures 7 Decision Node 6 Pipeline representative should only close ticket when a review has been completed with excavator and confirmed all work activi- ties in the area of excavation have been completed.
11 Task D Perform Locate Conduct locate per company requirements and obtain appropriate safety and security documentation. 12 Task E Excavation Monitoring (includes but is not limited to:) • Meet with contractor to define scope of work • Determine if or when observation by Pipeline Operator’s designated representative is required • Determine frequency of pipeline operator monitoring based on: – Scope of work – Duration of expected excavator work – Type of equipment – Potential impact on pipeline – Complexity of work – Multiple contractors / excavators • Conduct site visits on pre-determined frequency w/ documentation of contact. Documentation may include: – Name of contact person – Status of work – Scope changes – Confirm one-call ticket is current • Exercise authorities as defined in Task G • Obtain safety and security documentation