# Joining of materials other than by welding

**Citation:** RCSA § 16-280b-A29  
**Type / status:** regulation / current  
**Agency:** Connecticut Public Utilities Regulatory Authority  
**Effective:** 2025-06-11  
**Published:** 2025-06-11

(a) For purposes of this section, "Mechanical Fitting" means a stab type fitting, nut follower type fitting, bolted type fitting, not including a flange, or other compression type fitting. (b) All Mechanical Fittings shall provide a seal and additional Pipe restraint on all sides of the fitting. (c) Mechanical Fittings

## Document text

(a) For purposes of this section, "Mechanical Fitting" means a stab type fitting, nut follower type fitting, bolted type fitting, not including a flange, or other compression type fitting. (b) All Mechanical Fittings shall provide a seal and additional Pipe restraint on all sides of the fitting. (c) Mechanical Fittings shall not be located inside a building. (d) Procedures for each joining method shall include: (1) instructions to review the manufacturer's markings on Pipe, valves and fittings to ensure they are correctly sized and meet all requirements for use in the Transportation Of Gas; (2) preparation requirements such as cleaning, heating, scraping, and marking of the Pipe that have an impact on the integrity of the joint; (3) assembly instructions, such as sequence of operations, positioning of parts, clearances and tools required; and (4) joining specifications such as torque, hydraulic pressure, engagement, cooling and rough handle times, stab depths, and temperatures. (e) Procedures for threaded joints shall include: (1) threaded surfaces shall be cleaned and inspected for any condition that would affect the integrity of the joint; (2) threads exhibiting any condition that would affect the integrity of the joint shall not be used; (3) the two ends to be joined shall be properly aligned; (4) the joint shall be tightened using appropriate tools to produce a gastight joint; and 13 (5) care shall be used to protect the adjacent Piping from damage that impairs the serviceability of the Piping while tightening or loosening a threaded joint. (f) Any joint found not in compliance during the inspection required by 49 CFR 192.273(c), as amended from time to time, shall be repaired or removed prior to being Placed In Service, unless such joint is already in service, at which time it shall be repaired or removed as soon as practicable.

## 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: `c258777e195ec52295f2da2aa4263e951e356f0504cafd08a77e053e371788c7`
- Retrieved: 2026-08-12T07:07:58.041Z
- Exported: 2026-08-22T09:52:37.506Z
- Document slug: `ct-rcsa-16-280b-a29`

### Source metadata

```json
{
  "jurisdiction": "US-CT",
  "subtitle": "16-280b",
  "series": "A",
  "sectionNumber": 29,
  "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"
}
```