# 255.461 External corrosion control: protective coating.

**Citation:** 16 NYCRR 255.461  
**Type / status:** regulation / current  
**Agency:** New York State Public Service Commission  
**Effective:** Not stated  
**Published:** Not stated

Transmission and Distribution of Gas. (a) Each external protective coating, whether conductive or insulating, applied for the purpose of external corrosion control must:

(1) be applied on a properly prepared surface;

(2) have sufficient adhesion to the metal surface to effectively resist underfilm migration of moisture;

(3) be sufficiently ductile to resist cracking;

(4) have sufficient stre

## Document text

(a) Each external protective coating, whether conductive or insulating, applied for the purpose of external corrosion control must:

(1) be applied on a properly prepared surface;

(2) have sufficient adhesion to the metal surface to effectively resist underfilm migration of moisture;

(3) be sufficiently ductile to resist cracking;

(4) have sufficient strength to resist damage due to handling and soil stress; and

(5) have properties compatible with any supplemental cathodic protection.

(b) Each external protective coating which is an electrically insulating type must also have low moisture absorption and high electrical resistance.

(c) Each external protective coating must be inspected just prior to lowering the pipe into the ditch and backfilling, and any damage detrimental to effective corrosion control must be repaired.

(d) Electrical tests appropriate for the type of coating shall be used on pipelines to operate at 125 psig (862 kPa) or more to detect defects in the coating which may not be revealed by a visual inspection. Where such tests are not practical, electrical tests, after installation, shall be conducted.

(e) Electrical tests of pipe coating on distribution mains, other than those covered by subdivision (d) of this section, shall be conducted where practical.

(f) Each external protective coating must be protected from damage resulting from adverse ditch conditions or damage from supporting blocks.

(g) If coated pipe is installed by boring, driving or other similar method, precautions must be taken to minimize damage to the coating during installation.

## Provenance

- Official: Yes
- Source: <https://govt.westlaw.com/nycrr/Document/I505d0c23cd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)>
- Source ID: `ny-dps-nycrr`
- SHA-256: `86bee92257594faecc5043889c395d1230bb85219d26d764d47f0f4604669523`
- Retrieved: 2026-08-12T06:20:40.894Z
- Exported: 2026-08-24T03:25:43.436Z
- Document slug: `ny-nycrr-255-461`

### Source metadata

```json
{
  "jurisdiction": "US-NY",
  "title": 16,
  "part": "255",
  "partTitle": "Transmission and Distribution of Gas",
  "scopeKind": "gas-pipeline-safety",
  "tocPath": [
    "Part 255 Transmission and Distribution of Gas",
    "Requirements for Corrosion Control"
  ],
  "legalScope": "Complete current terminal legal unit exposed by the DPS-designated Title 16 NYCRR pipeline-safety part inventory.",
  "applicabilityCaveat": "Applicability depends on the part and section, Commission jurisdiction, commodity and facility type, intrastate or interstate status, operator and activity, exemptions, waivers, federal preemption, Commission orders, and incorporated law. DPS inspects portions of interstate systems for PHMSA, but PHMSA retains federal enforcement authority. DPS states that all jurisdictional Part 256 gas-holder and Part 257 LPG-plant facilities have been decommissioned even though those regulations remain unrepealed.",
  "incorporationCaveat": "These parts incorporate or rely on federal pipeline regulations, federal and New York statutes, Commission rules and orders, and privately authored technical standards. Part 10 supplies incorporation details. References metadata preserves explicit citations but does not reproduce external material, determine licensing rights, or decide whether a particular incorporation is static or dynamic.",
  "publicationCaveat": "The New York Department of Public Service identifies these eleven Title 16 NYCRR parts as its state pipeline-safety regulations and links to the public DOS/Westlaw NYCRR reading copy. That site labels the online text unofficial and directs users needing evidentiary accuracy to the Official NYCRR maintained by the Department of State Division of Administrative Rules. Each section's 'Current through' date is the most recent official NYCRR supplement covering that section, not a uniform corpus-wide amendment date.",
  "rights": "New York government-edict text is preserved with DPS, Department of State, and publisher attribution. The public reading site's presentation and enhancements, agency marks, forms, annotations, and incorporated federal or privately authored standards require separate rights review; this connector does not claim rights in those materials.",
  "rightsReviewRequired": true,
  "currentThrough": "2024-05-31",
  "historyEvents": "No event is emitted because the section reading copy does not supply an explicit adoption, filing, or effective-date history.",
  "publisherCitation": "16 CRR-NY 255.461",
  "identityAnomaly": null,
  "references": [],
  "region": "NY"
}
```