# Pipeline Operations - Columbia Gas - Valves Used to Isolate the System

**Citation:** PLD18MR003 docket item 39  
**Type / status:** incident / current  
**Agency:** National Transportation Safety Board  
**Effective:** Not stated  
**Published:** Not stated

PLD18MR003; docket item 39; Adobe PDF file.

## Document text

Pipeline Operations - Columbia Gas - Valves Used to Isolate the System PLD18MR003 docket item 39. 1 page. 0 photograph references. Published media type: Adobe PDF file. Metadata only; the linked docket file is not mirrored.

## Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/Docket/Document/docBLOB?ID=40476230&FileExtension=.PDF&FileName=Pipeline%20Operations%20-%20Columbia%20Gas%20-%20Valves%20Used%20to%20Isolate%20the%20System-Master.PDF>
- Source ID: `ntsb-dockets`
- SHA-256: `2654c699fc9330c567a31b9712977ee97b253abc0fca03d1a30042db8210f41c`
- Retrieved: 2026-08-20T04:58:09.797Z
- Exported: 2026-08-22T13:58:22.033Z
- Document slug: `ntsb-docket-item-40476230`

### Source metadata

```json
{
  "materialSubtype": "ntsb_docket_item_metadata",
  "ntsbNumber": "PLD18MR003",
  "blobId": "40476230",
  "ordinal": 39,
  "pages": 1,
  "photos": 0,
  "publishedMediaType": "Adobe PDF file",
  "fileExtension": ".PDF",
  "fileName": "Pipeline Operations - Columbia Gas - Valves Used to Isolate the System-Master.PDF",
  "docketUrl": "https://data.ntsb.gov/Docket/?NTSBNumber=PLD18MR003",
  "tableOfContentsUrl": "https://data.ntsb.gov/Docket/TOCPrintable?data=98293",
  "docketReportedMode": "Hazmat",
  "docketCreationDate": "2019-09-24",
  "docketLastModifiedDate": "2020-07-07",
  "docketPublicReleaseDate": "2019-09-24",
  "metadataOnly": true,
  "binaryMirrored": false,
  "caveat": "Docket item metadata and official link only. The title does not establish authorship, evidentiary weight, NTSB endorsement, legal effect, or a current regulatory finding; party submissions and evidence binaries are not mirrored.",
  "jurisdiction": "US"
}
```