# 8003 Natural Gas Service Reliability and System Planning Standards - 9.0 Major Reliability Event Report

**Citation:** 26 Del. Admin. C. § 8003-9.0  
**Type / status:** regulation / current  
**Agency:** Delaware Public Service Commission  
**Effective:** 2020-10-11  
**Published:** 2020-10-01

Major Reliability Event Report. 9.1 Each GDC shall notify the Commission of Major Reliability Events as soon as practical, but not more than 36 hours after the onset of a Major Reliability Event. Initial notification is required when more than 1000 of a GDC's customers experience a Sustained Outage during a 24-hour period.

9.2 Each GDC is expected to restore service to customers as quickl

## Document text

9.1 Each GDC shall notify the Commission of Major Reliability Events as soon as practical, but not more than 36 hours after the onset of a Major Reliability Event. Initial notification is required when more than 1000 of a GDC's customers experience a Sustained Outage during a 24-hour period.

9.2 Each GDC is expected to restore service to customers as quickly and safely as permitted by Major Reliability Event conditions. The GDC's restoration effort may be subject to review. The Commission may require subsequent Corrective Actions and impose penalties as permitted by Section 10.0 or other applicable Delaware law.

9.3 Within 15 business days after the end of a Major Reliability Event, the GDC shall submit a written report to the Commission, which shall include the following:

9.3.1 The date and time when the GDC's Major Reliability Event control center opened and closed;

9.3.2 The total number of customers out-of-service over the course of the Major Reliability Event in six-hour increments;

9.3.3 The date and time when 75%, 95% and 100% of customers affected by a Major Reliability Event were Restored;

9.3.4 The total number of service orders completed, by order type;

9.3.5 The time at which the mutual aid and non-company contractor crews were requested, arrived for duty and were released, and the mutual aid and non-contractor responses to the requests for assistance; and

9.3.6 A timeline profile in six-hour increments of the number of company crews, mutual aid crews, and non-company contractor crews working on restoration activities during the duration of the Major Reliability Event.

## Provenance

- Official: Yes
- Source: <https://regulations.delaware.gov/AdminCode/title26/8003>
- Source ID: `de-admin-code`
- SHA-256: `5210ee5fa966c7121f20c732841629a8475c5ed4262ce95fed9d91ae6e2acc47`
- Retrieved: 2026-08-20T09:32:30.577Z
- Exported: 2026-08-24T03:58:11.267Z
- Document slug: `de-admin-code-8003-9-0`

### Source metadata

```json
{
  "jurisdiction": "US-DE",
  "title": 26,
  "regulatoryGroup": "8000 Gas Regulations",
  "regulationNumber": "8003",
  "section": "9.0",
  "scopeKind": "adjacent-gas-reliability",
  "legalScope": "Complete current Regulation 8003 adjacent natural-gas distribution reliability and system-planning standards, retained because it expressly requires federal and Delaware pipeline-safety compliance.",
  "applicabilityCaveat": "Regulation 8003 is adjacent gas-distribution reliability and system-planning coverage, not the core Delaware pipeline-safety compliance code. It applies to Delaware gas distribution companies and does not displace 49 CFR Part 192, Regulation 8001, utility manuals, Commission orders, or other law.",
  "incorporationCaveat": "Regulation 8003 requires conformity with 49 CFR Part 192 and Delaware pipeline-safety programs while adding state reliability and planning duties. The federal regulation and utility manuals are not reproduced.",
  "rights": "Delaware provides authenticated Administrative Code PDFs under its Uniform Electronic Legal Material Act implementation, but the Regulations site does not state a general open-content license. Preserve attribution and provenance; review redistribution of site presentation, state marks, linked forms, and incorporated federal or third-party material separately.",
  "authenticatedPdfId": "2a8585b3-8f3c-4671-9a83-942f72e92268",
  "references": [
    {
      "citation": "49 CFR 192",
      "referenceType": "cfr",
      "url": "https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-D/part-192"
    }
  ],
  "region": "DE"
}
```