# Windler Ventures, LLC — Pipeline Safety Interpretation

- **operation:** document
- **citation:** PI-23-0013
- **title:** Windler Ventures, LLC — Pipeline Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2024-04-26
- **effective on:** Not available
- **summary:** PI-23-0013 response to Windler Ventures, LLC concerning 192.712.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-23-0013.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-23-0013.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-23-0013
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/2024-04/Windler-Ventures-LLC-PI-23-0013-04-25-2024-Part192.712.pdf
**body:**

<<<PAGE 1>>>

U.S. Department
of Transportation
Pipeline and Hazardous
Materials Safety
Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
April 25, 2024
Mr. Cary Windler
Principal
Windler Ventures, LLC
40976 Westley Lane
Magnolia, TX 77354
Dear Mr. Windler:
In a letter to the Pipeline and Hazardous Materials Safety Administration (PHMSA), dated
June 29, 2023, you requested an interpretation of the Federal pipeline safety regulations in
49 Code of Federal Regulations (CFR) Part 192 with respect to the § 192.712(c) dent evaluation
procedure notification requirement.
You asked if the code requires an operator to develop an engineering critical assessment (ECA)
procedure, why does PHMSA require the operator to submit advance notification of the
procedure before using it?
You stated § 192.712(c) requires operators to develop a dent evaluation procedure that includes
how the operator will perform an ECA for dent evaluations. Also, you stated § 192.712(c)(11)
requires operators to submit advanced notice to PHMSA in accordance with § 192.18 prior to
using an ECA for dent evaluations. You believe these requirements may conflict with each
other, and that normally if the regulations require an operator to develop a procedure, the
operator can use that procedure without permission. The applicable regulatory language is
reprinted below.
§ 192.712 Analysis of predicted failure pressure and critical strain level.
(a) ….
(c) Dents and other mechanical damage. To evaluate dents and other mechanical
damage that could result in a stress riser or other integrity impact, an operator must
develop a procedure and perform an engineering critical assessment as follows:
(1) ….
(11) An operator using an engineering critical assessment procedure, other
technologies, or techniques to comply with paragraph (c) of this section must submit
advance notification to PHMSA, with the relevant procedures, in accordance with
§ 192.18.
The Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety provides written clarifications of the Regulations (49 CFR
Parts 190-199) in the form of interpretation letters. These letters reflect the agency's current application of the regulations to the specific facts
presented by the person requesting the clarification. Interpretations are not generally applicable, do not create legally-enforceable rights or
obligations, and are provided to help the specific requestor understand how to comply with the regulations.

<<<PAGE 2>>>

Page 2 of 2
You asked PHMSA the following questions and PHMSA’s response follows each question.
Question 1: If an operator has a fully developed dent evaluation procedure, which
includes criteria for performing an ECA, does the operator need to notify PHMSA prior
to implementing an ECA which follows the operator’s procedure?
Response to 1: Yes, per § 192.712(c)(11), an operator using an ECA procedure must
submit advance notification to PHMSA, with the relevant procedures, in accordance with
§ 192.18.
Question 2: If the answer to Question 1 is “Yes”, then: Can the operator submit advance
notification, including the relevant dent evaluation and ECA procedure, one time to cover
all future uses of the procedure?
Response to 2: Yes, operators that comply with § 192.712(c)(11) to submit advance
notification to PHMSA of an ECA and relevant procedures developed in accordance with
requirements of § 192.712(c) may use the submitted ECA procedure for future dent and
mechanical damage evaluations in a manner consistent with the parameters and
limitations established by that procedure. Any changes made to the ECA procedure after
submission requires the operator to submit advance notice of the new procedure in
accordance with 192.712(c)(11).
If we can be of further assistance, please contact Tewabe Asebe at 202-366-5523.
Sincerely,
John A. Gale
Director, Office of Standards
and Rulemaking
The Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety provides written clarifications of the Regulations (49 CFR
Parts 190-199) in the form of interpretation letters. These letters reflect the agency's current application of the regulations to the specific facts
presented by the person requesting the clarification. Interpretations are not generally applicable, do not create legally-enforceable rights or
obligations, and are provided to help the specific requestor understand how to comply with the regulations.

<<<PAGE 3>>>

June 29, 2023
To: Information Resources Manager
From: Cary Windler
Subject: Interpretation for 49 CFR 192.712(c)
I am requesting an interpretation regarding §192.712(c) and §192.712(c)(11). These
code references appear to be slightly in conflict with each other. Normally if the code
requires an Operator to develop a procedure, the Operator can use that procedure
without permission.
• §192.712(c) requires Operators to develop a dent evaluation procedure which
includes how the operator will perform an ECA for dent evaluations. This
procedure, and therefore the ECA process, would be subject to PHMSA and
state regulatory audits and must be sufficient to be compliant with §192.712(c).
• §192.712(c)(11) requires Operators to submit advanced notice to PHMSA in
accordance with §192.18 prior to using an ECA for dent evaluations.
Question 1: If an Operator has a fully developed dent evaluation procedure, which
includes criteria for performing an ECA, does the Operator need to notify PHMSA prior
to implementing an ECA which follows the Operator’s procedure?
Question 2: If the answer to Question 1 is “Yes”, then: Can the Operator submit
advance notification, including the relevant dent evaluation and ECA procedure, one
time to cover all future uses of the procedure?
If you have any questions or need further information, please feel free to reach out to
me. Thank you for your time and response.
Cary Windler, PE, Principal
Windler Ventures, LLC
Cary.Windler.PE@Gmail.com
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