Thread – Additional information from SLB – Investigation IVT 10524

Written by Claude Haiku 4.5 from the extracted text on 10 Jul 2026. It can miss or misread redacted and scanned pages. Check the source before relying on it.

NOPSEMA's environment specialist provided SLB (Schlumberger) with documentation related to Investigation IVT 10524 concerning seismic survey activities. The correspondence from August 2021 references a December 2019 petroleum environmental inspection (ID2101) and includes an acceptance letter for the Otway 2D Marine Seismic Survey with imposed limitations. Key issues under investigation involved Passive Acoustic Monitoring (PAM) validation for blue whale detection and questions about seismic source activation procedures, including whether all acquisition lines commenced with soft starts as required. The regulator requested SLB provide raw navigation data (P2/94) and documentation detailing PAM validation requirements. NOPSEMA imposed activity limitations related to night-time acquisition in buffer zones, with the inspection report and response to recommendation 2101-1 specifying environmental protection measures for marine mammal detection during seismic operations.