# Upratings and Upgradings

**Citation:** RCSA § 16-280b-B21  
**Type / status:** regulation / current  
**Agency:** Connecticut Public Utilities Regulatory Authority  
**Effective:** 2025-06-11  
**Published:** 2025-06-11

(a) Prior to any Uprating or Upgrading: (1) each Operator shall ensure, through system modeling, that adequate pressure will be maintained in each adjacent Pipeline after isolation of the Pipeline or Pipelines undergoing Uprating or Upgrading; (2) all customers served by the Pipeline or Pipelines undergoing the Upratin

## Document text

(a) Prior to any Uprating or Upgrading: (1) each Operator shall ensure, through system modeling, that adequate pressure will be maintained in each adjacent Pipeline after isolation of the Pipeline or Pipelines undergoing Uprating or Upgrading; (2) all customers served by the Pipeline or Pipelines undergoing the Uprating or Upgrading shall be provided notification; (3) a leakage survey shall be performed on the Pipeline or Pipelines undergoing Uprating or Upgrading not later than 30 calendar days after the first incremental pressure increase; and (4) all leaks on the Pipeline or Pipelines undergoing the Uprating or Upgrading shall be repaired; (b) Upratings and Upgradings shall meet the following requirements: (1) only be performed on polyethylene or coated and cathodically protected steel Pipelines; (2) not be permitted where the pressure is increased from Low Pressure to High Pressure, unless approved by the Authority in writing; (3) not be permitted where Service Lines are located inside a building, unless approved by the Authority in writing; (4) any Service Regulator found functioning improperly pursuant to 49 CFR 192.557(b)(6), as amended from time to time, shall be remediated prior to providing service to the customer; (5) pressure shall be monitored in each adjacent Pipeline to ensure that adequate pressure is maintained; (6) the MAOP in the Pipeline or Pipelines undergoing the Uprating shall be the highest pressure obtained at the approximate system endpoint or endpoints or Gas flow null point or points. The approximate system endpoint or endpoints or Gas flow null point or points shall be determined by system modeling. For Upgradings, the highest pressure obtained shall be not more than three pounds per square inch gauge less than the MAOP; (7) leakage surveys shall begin immediately and be completed not later than 8 hours after each incremental pressure increase; 31 (8) all Grade 1 Leaks and Grade 2 Leaks on the Pipeline or Pipelines undergoing the Uprating or Upgrading shall be repaired prior to the next incremental pressure increase. All leaks on the Pipeline or Pipelines undergoing the Uprating or Upgrading shall be repaired not later than 72 hours after completion of the leakage survey associated with the final pressure increase; and (9) an additional leakage survey of the Pipeline or Pipelines undergoing the Uprating or Upgrading shall be performed not sooner than 24 hours and not later than 7 calendar days after completion of the leakage survey associated with the final pressure increase. (c) Upgradings shall follow the Uprating requirements of 49 CFR 192, Subpart K, as amended from time to time, unless approved by the Authority in writing.

## Provenance

- Official: Yes
- Source: <https://eregulations.ct.gov/eRegsPortal/Search/getDocument?guid=%7BE04F6097-0000-CC1C-9D68-25A0BA411C82%7D>
- Source ID: `ct-sots-rcsa-16-280b`
- SHA-256: `112d74cdfe3bd7d50d3ec15f2ecfe832b8633668ebdbf9b3269da25f82881008`
- Retrieved: 2026-08-12T07:07:58.041Z
- Exported: 2026-08-22T03:24:26.536Z
- Document slug: `ct-rcsa-16-280b-b21`

### Source metadata

```json
{
  "jurisdiction": "US-CT",
  "subtitle": "16-280b",
  "series": "B",
  "sectionNumber": 21,
  "secretaryFileNumber": 6446,
  "trackingNumber": "PR2023-019",
  "effectiveDateEvidence": "Secretary of the State confirmation states that the regulation became effective June 11, 2025.",
  "scopeCaveat": "This corpus contains all 117 dedicated pipeline-safety sections newly codified as RCSA 16-280b-A1 through A75, B1 through B32, and C1 through C10 by Connecticut Secretary of the State File Number 6446. The filing also amends four adjacent legacy utility provisions and repeals eleven obsolete 16-11 provisions; those actions are retained as provenance and inventory rather than mixed into the dedicated searchable corpus.",
  "applicabilityCaveat": "Applicability varies by natural-gas or petroleum-gas operator, public-service-company status, pipeline facility, master-meter or petroleum-gas distribution system, activity, waiver, and federal jurisdiction. PURA states that Connecticut has no intrastate transmission or gathering lines and that hazardous-liquid pipelines remain under PHMSA jurisdiction.",
  "incorporationCaveat": "The rules supplement and repeatedly incorporate federal pipeline requirements, generally as amended from time to time, and rely on Connecticut statutes and external standards. References are recorded without reproducing incorporated material or deciding federal preemption or facility-specific legal effect.",
  "publicationCaveat": "The authenticated final filing was posted to the Connecticut eRegulations System and became effective June 11, 2025. It is used instead of the older browse pages, some of which still display pre-2025 text and stale update labels.",
  "rights": "Official Connecticut legal and agency materials are retained with attribution and cryptographic provenance. State marks, site presentation, forms, annotations, and incorporated federal or privately authored material require separate review.",
  "rightsReviewRequired": true,
  "region": "CT"
}
```