# Centro Comunicaciones Don Bosco — Pipeline Safety Interpretation

**Citation:** PI-92-008  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1992-02-18

PI-92-008 response to Centro Comunicaciones Don Bosco concerning 192.11, 192.283.

## Document text

<<<PAGE 1>>>

Mr. Jose Hugo Muraco
Jefe De Normalizacian Tecnica
Centro Comunicaciones Don Bosco
Buenos Aires, Argentina
Dear Mr. Muraco:
Please refer to my letter to you dated January 7, 1992. The answer to question number 2
regarding pipeline river crossings was incorrect. I said that a design factor of 0.50, or less, is
required for steel pipe in Class 1 or 2 locations in inland navigable waters, such as rivers. This
answer was based on an incorrect reading of §192.111(d)(2).
The design factor for steel pipe, including pipe in inland navigable waters, such as rivers, is
governed by §192.111(a), except as provided in §192.111(b)-(d). Under §192.111(a), the design
factor varies by Class location, as follows:
Class 1..........0.72
Class 2..........0.60
Class 3..........0.50
Class 4..........0.40
The provisions of §192.111(b)-(d) do not require any variation from the above factors for pipe in
river crossings. Note, however, that §192.111(d)(2) requires that in Class 1 and 2 locations steel
pipe, including pipe risers, on platforms located offshore, or in inland navigable waters must have
a design factor of 0.50 or less.
I hope my earlier response did not cause you any inconvenience.
Sincerely,
/signed/
Cesar DeLeon
Director, Regulatory Programs
Office of Pipeline Safety
DB
C:\WP51\INTERPRT\192\111\92-02-18
1

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1992/PI92008.pdf>
- Source ID: `phmsa`
- SHA-256: `609f5e52002175043c5e4e7c96a2ec4f711d397a46052d20e47b50a2e2194cb7`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T00:53:01.909Z
- Document slug: `phmsa-interpretation-pi-92-008`

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