# Gas del Estado — Pipeline Safety Interpretation

**Citation:** PI-92-003  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 1992-01-07

PI-92-003 response to Gas del Estado concerning 192.1, 192.111, 192.245.

## Document text

<<<PAGE 1>>>

Mr. Jose Hugo Muraco
Jefe de Normalizacian Tecnica
Gas del Estado
Centro Communicaciones Don Bosco
Buenos Aires, Argentina
Dear Mr. Muraco:
This responds to your telefax #536 dated October 21, 1991, in the order of your specific
questions as stated in your telefax:
1. 2. 3. Question: §192.1(b) What is the limit between gathering and other facilities? Likewise,
what regulations, standard or code do you suggest for the design of gathering lines or
networks to comply with?
Answer: With regard to your question on the limit between gathering and other facilities,
I am enclosing a Notice of Proposed Rulemaking (56 FR 48505; September 25, 1991)
proposing a more precise definition for gathering lines, including a clearer delineation of
the end point of a gathering line. The final rule on this proposed definition will be issued
in 1992. In accordance with §192.9, each gathering line must comply with the
requirements of Part 192 applicable to transmission lines.
Question: §192.111(b) In paragraph (4) river crossing headers are specifically mentioned
within the examples of fabricated assembly to be calculated with design factor 0,6 for
Class 1 location. Nowhere in this sub-section (b) is the river crossing itself mentioned;
thus, should it be interpreted that for this latter it is not required a "reinforced" calculation
by applying such factor?
Answer: In accordance with §192.111(d), a design factor of 0.50 or less must be used in
the design formula in §192.105 for Class 1 and Class 2 locations for steel pipe located in
inland navigable waters, such as rivers.
Question: §192.245(a) Why welds to be repaired on a pipeline vessel are exempted from
the requisite of being removed if the crack exceeds 8% of the weld length, considering
that the acceptance conditions for such lengths of pipeline should be more restrictive and
the line is still being installed (not fully descended from the vessel)? Then, for this specific
case, what type of repair do you recommend? Besides, the 8 percent mentioned should be
DB
C:\WP51\INTERPRT\192\1\92-01-07
1

<<<PAGE 2>>>

interpreted as corresponding to a single crack, or more than one crack are admissible with
such 8% as sum for their lengths?
Answer: You inquire why welds to be repaired on an offshore pipeline being installed
from a pipeline vessel are exempted from the requirements of being removed if the crack
exceeds 8% of the weld. This exception for offshore pipelines was provided because of
the difficulties in removing or repairing welds on a pipeline vessel. The repair of a crack
must be done in accordance with §192.245(b) and (c). You further inquire if the crack
that is more than 8 percent of the weld length that must be removed pursuant to
§192.245(a) is a single crack or more than one crack. The limitations on this requirement
applies to one crack or more than one crack that cumulatively may exceed 8 percent of the
weld length.
I trust that this adequately responds to your questions.
Sincerely,
/signed/
Cesar DeLeon
Director
Regulatory Programs
Office of Pipeline Safety
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## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1992/PI92003.pdf>
- Source ID: `phmsa`
- SHA-256: `7831d08d47cbbedf903314baef62729125095e57b57a27a174606f1db53d19a2`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T00:53:01.963Z
- Document slug: `phmsa-interpretation-pi-92-003`

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