# 255.490 Direct assessment.

**Citation:** 16 NYCRR 255.490  
**Type / status:** regulation / current  
**Agency:** New York State Public Service Commission  
**Effective:** Not stated  
**Published:** Not stated

Transmission and Distribution of Gas. Each operator that uses direct assessment as defined in section 255.903 of this Part on an onshore transmission line made primarily of steel or iron to evaluate the effects of a threat in the first column must carry out the direct assessment according to the standard listed in the second column. These standards do not apply to methods associated with direct 

## Document text

Each operator that uses direct assessment as defined in section 255.903 of this Part on an onshore transmission line made primarily of steel or iron to evaluate the effects of a threat in the first column must carry out the direct assessment according to the standard listed in the second column. These standards do not apply to methods associated with direct assessment, such as close interval surveys, voltage gradient surveys, or examination of exposed pipelines, when used separately from the direct assessment process.

Threat | Standard
External corrosion | 255.925
Internal corrosion in pipelines that transport dry gas | 255.927
Stress corrosion cracking | 255.929

(a) For lines not subject to the pipeline integrity management requirements of this Part, the terms covered segment and covered pipeline segment in sections 255.925, 255.927, and 255.929 of this Part refer to the pipeline segment on which direct assessment is performed.

(b) In section 255.925(b) of this Part, the provision regarding detection of coating damage applies only to pipelines subject to the pipeline integrity management requirements of this Part.

## Provenance

- Official: Yes
- Source: <https://govt.westlaw.com/nycrr/Document/I505d3318cd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)>
- Source ID: `ny-dps-nycrr`
- SHA-256: `1eec4d3d2b104287cae5483dff0a889b002c6841c8909ff57741eb490855a30e`
- Retrieved: 2026-08-12T06:20:40.894Z
- Exported: 2026-08-25T03:59:18.923Z
- Document slug: `ny-nycrr-255-490`

### Source metadata

```json
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  "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 255.490",
  "identityAnomaly": null,
  "references": [
    {
      "citation": "16 NYCRR 255.903",
      "referenceType": "new-york-administrative-code",
      "url": "https://govt.westlaw.com/nycrr/Document/I505da872cd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)"
    },
    {
      "citation": "16 NYCRR 255.925",
      "referenceType": "new-york-administrative-code",
      "url": "https://govt.westlaw.com/nycrr/Document/I505dcf5bcd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)"
    }
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  "region": "NY"
}
```