# NTSB Safety Recommendation P-77-024

**Citation:** P-77-024  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective:** 1977-09-27  
**Published:** 1977-09-27

EXPEDITE THE UPDATING OF ITS GAS PIPING RECORDS AS SOON AS POSSIBLE TO ELIMINATE UNCERTAINTIES ON FUTURE SYSTEM MAINTENANCE WORK.

## Document text

NTSB safety recommendation P-77-024.

EXPEDITE THE UPDATING OF ITS GAS PIPING RECORDS AS SOON AS POSSIBLE TO ELIMINATE UNCERTAINTIES ON FUTURE SYSTEM MAINTENANCE WORK.

Priority: CLASS II

Overall Status: Closed - Acceptable Action

Issued Date: 1977-09-27

Adopted Date: 1977-09-16

Overall Date Closed: 1978-05-04

Synopsis: ON MAY 25, 1977, AN EXPLOSION AND FIRE DESTROYED A BUILDING AT 65-67 ARCH STREET IN GREENWICH, CONNECTICUT. TWO ADJACENT BUILDINGS WERE ALSO DESTROYED AND ANOTHER BUILDING WAS HEAVILY DAMAGED. FIREMEN EVACUATED RESIDENTS FROM A TWO-BLOCK AREA 30 MINUTES AFTER THE EXPLOSION. TEN PERSONS REQUIRED MEDICAL TREATMENT FOR INJURIES CAUSED BY THE ACCIDENT.

Ntsbnumber: DCA77FP024

Report Number: None

Addressee Name: Connecticut Natural Gas Corporation

Addressee Status: Closed--No Longer Applicable

Addressee Date Closed: 1978-05-04

Addressee Acronym: CNG

Addressee Organization Type: S-State Government

Communication Date: 1977-10-13

Communication Type: Official Correspondence

Communication Contents: LTR FROM CONNECTICUT NATURAL GAS CORP: CONNECTICUT NATURAL GAS HAS BEEN WORKING ON RECORDS UPDATING (ESPECIALLY IN THE GREENWICH AREA) SINCE 1975. CURRENT ACTIVITIES IN LINE WITH THE RECOMMENDATION ARE: HIRING OF TEMPORARY EMPLOYEE TO ASSIST IN OFFICE AND FIELD WORK; APPROVAL OF EXPENDITURE TO REDUCE THE MAPPING TIME FROM 3 YEARS TO BE FINISHED DURING 1978.

Addressee Acronym: CNG

Addressee Organization Type: S-State Government

Communication Date: 1978-01-24

Communication Type: Official Correspondence

## Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-77-024>
- Source ID: `ntsb-pipeline`
- SHA-256: `297f3f64ded1d793c6ee21bc79878449b08e2007f1cf4025086045b85da149c3`
- Retrieved: 2026-08-20T04:57:24.741Z
- Exported: 2026-08-23T23:08:53.630Z
- Document slug: `ntsb-recommendation-p-77-024`

### Source metadata

```json
{
  "recordKind": "ntsb_safety_recommendation",
  "safetyRecommendationNumber": "P-77-024",
  "recommendationMode": "Pipeline",
  "topicMode": "Pipeline",
  "ntsbNumber": "DCA77FP024",
  "priority": "CLASS II",
  "overallStatus": "Closed - Acceptable Action",
  "overallStatusAcronym": "CAA",
  "overallDateClosed": "1978-05-04",
  "lastModifiedDate": "2026-03-19",
  "reportNumber": "None",
  "reportUrl": null,
  "transmittalLetterUrl": "http://www.ntsb.gov/safety/safety-recs/recletters/P77_24_25.pdf",
  "addressees": [
    {
      "addresseeName": "Connecticut Natural Gas Corporation",
      "addresseeStatusAcronym": "CNLA",
      "addresseeStatus": "Closed--No Longer Applicable",
      "addresseeDateClosed": "1978-05-04",
      "addresseeDetails": [
        {
          "addresseeAcronym": "CNG",
          "addresseeOrganizationType": "S-State Government",
          "isFromNtsb": false,
          "communicationDate": "1977-10-13",
          "communicationType": "Official Correspondence",
          "communicationContents": "LTR FROM CONNECTICUT NATURAL GAS CORP: CONNECTICUT NATURAL GAS HAS BEEN WORKING ON RECORDS UPDATING (ESPECIALLY IN THE GREENWICH AREA) SINCE 1975. CURRENT ACTIVITIES IN LINE WITH THE RECOMMENDATION ARE: HIRING OF TEMPORARY EMPLOYEE TO ASSIST IN OFFICE AND FIELD WORK; APPROVAL OF EXPENDITURE TO REDUCE THE MAPPING TIME FROM 3 YEARS TO BE FINISHED DURING 1978."
        },
        {
          "addresseeAcronym": "CNG",
          "addresseeOrganizationType": "S-State Government",
          "isFromNtsb": true,
          "communicationDate": "1978-01-24",
          "communicationType": "Official Correspondence",
          "communicationContents": ""
        }
      ]
    }
  ],
  "jurisdiction": "US"
}
```