# 420.8 Periodic inspections.

**Citation:** 16 NYCRR 420.8  
**Type / status:** regulation / current  
**Agency:** New York State Public Service Commission  
**Effective:** Not stated  
**Published:** Not stated

Distribution of Steam. (a) Steam traps and trap piping assemblies shall be inspected for general condition and proper operation at least six times each calendar year at intervals not exceeding ten weeks.

(b) Blow-off valves and by-pass valves shall be checked for operability immediately prior to closing each associated main valve during a scheduled shut down of a section of the s

## Document text

(a) Steam traps and trap piping assemblies shall be inspected for general condition and proper operation at least six times each calendar year at intervals not exceeding ten weeks.

(b) Blow-off valves and by-pass valves shall be checked for operability immediately prior to closing each associated main valve during a scheduled shut down of a section of the steam distribution pipeline system. Removal of condensate from a shut down section of pipeline must be accomplished prior to re-opening main valves.

(c) Accessible expansion slip joints shall be inspected at least twice each calendar year at intervals not exceeding 30 weeks. The inspection shall include checks for leakage, proper alignment, and traverse measurement.

(d) Inside service line valves shall be inspected at the time of periodic meter reading. Valve seals, and warning tags stating that the opening of the service valve must be made only by authorized steam corporation personnel, shall be affixed to each inside service valve. Missing or illegible tags and broken seals must be replaced as soon as possible, but no later than one week, after the condition was discovered. Broken seals, indicating possible unauthorized operation of the valve, shall be investigated to determine cause.

(e) Manholes containing steam facilities shall be inspected for general conditions and adequacy of insulation at least once each calendar year at intervals not exceeding 15 months and shall be inspected for structural integrity at least once each ten calendar years.

(f) System pressure telemetering recording devices shall be inspected and tested for accuracy at least twice each calendar year at intervals not exceeding 30 weeks. At a minimum, pressure recording gauges shall be installed at the interface between portions of the system which are designed for different operating pressures.

## Provenance

- Official: Yes
- Source: <https://govt.westlaw.com/nycrr/Document/I5064ad2ecd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)>
- Source ID: `ny-dps-nycrr`
- SHA-256: `7491d1be752afb1a63f725ac10469e4bbe09d80e90b132fd9ec09744603bce08`
- Retrieved: 2026-08-12T06:20:40.894Z
- Exported: 2026-08-25T10:25:48.160Z
- Document slug: `ny-nycrr-420-8`

### Source metadata

```json
{
  "jurisdiction": "US-NY",
  "title": 16,
  "part": "420",
  "partTitle": "Distribution of Steam",
  "scopeKind": "steam-pipeline-safety",
  "tocPath": [
    "Part 420 Distribution of Steam"
  ],
  "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 420.8",
  "identityAnomaly": null,
  "references": [],
  "region": "NY"
}
```