Pipes Decommissioning and Abandonment

Q: What happens when a pipeline is left unfinished?

A: When a pipeline is permanently taken out of service, its product supply to end users stops. This is called pipeline abandonment. The pipeline stops operating and may either be removed from the ground or left in place, a method known as abandonment in place.

Q: What steps ensure safe pipeline abandonment?

A: To safely abandon a pipeline, you must disconnect it from the active network, remove all hazardous liquids, and securely seal every end. These steps prevent leaks, reduce hazards, and avoid future structural issues.

Q: What legal requirements apply to pipeline abandonment?

A: Federal and state regulations increasingly focus on pipeline abandonment. For instance, a proposed amendment to the Pipeline Safety Act would require inspections and certifications whenever pipelines are abandoned or transferred. Regulations also require disconnection, purging, and sealing for pipelines left in place.

Q: What risks do abandoned pipelines pose?

A: Abandoned pipelines can create underground voids, which may destabilize soil, cause subsidence, and allow water intrusion. Leftover fluids could seep into public spaces, creating hazards for people, property, and the environment.

Q: How does lightweight cellular concrete grout help?

A: Using low-density, flowable lightweight cellular concrete grout allows municipalities and asset owners to decommission pipelines safely and efficiently. Mixed with the Stable-Air system, this grout can fill pipe voids of all sizes, delivering fast, precise, and reliable results.