# NORTHWEST PIPELINE LLC — Integrity Assurance Notification

- **operation:** document
- **citation:** PHMSA 21-231276
- **title:** NORTHWEST PIPELINE LLC — Integrity Assurance Notification
- **source type:** inspection
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2021-12-07
- **effective on:** 2021-12-07
- **summary:** GAS TRANSMISSION in AL,DE,FL,GA,ID,LA,MD,MS,NC,NJ,NY,OCSG,OR,PA,SC,TX,UT,VA,WA,WY; ASSUMED TOUGHNESS; PHMSA status: RESOLVED.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-leading-ian-21-231276-operator-13845.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-leading-ian-21-231276-operator-13845.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-leading-ian-21-231276-operator-13845
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/data_statistics/pipeline/SRCR_and_Integrity_Assurance_Notifications.zip
**body:**

Pursuant to 192.712(e)(2)(i)(E) Williams is submitting this notification to use other appropriate  and conservative default Charpy V-Notch (CVN) and/or fracture toughness values (Kc) for use in  analyzing crack-related conditions applicable to 192.712(d). These CVN and/or Kc values are  demonstrated to be appropriate and conservative through an exhaustive statistical analysis  performed with Structural Integrity Associates, Inc.
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- **body characters:** 452