# Regulus search export - Query: `67 FR 70806` - Source type: All - Part: All - Source: All - Status: All - Jurisdiction: All - Collection: All - Incident class: All - Sort: relevance - Date from: Any - Date to: Any - As of: Current corpus - Results: 2 - Exported: 2026-08-25T19:12:41.858Z ## 1. NTSB Safety Recommendation P-98-001 **Citation:** P-98-001 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1998-04-30 / 1998-04-30 TO THE RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION: Notify pipeline system operators who have installed ployethylene gas piping extruded by Century Utility Products, Inc., from Carbide Corporation DHDA 2077 tan resin of the piping's poor brittle-crack resistance. Require these operators to develop a plan to closely monitor the performance of this piping & to identify & replace, in a timely manner, any of the piping ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `0a65c72e749ceba599a00f3008685cfffef16c574e4caa4d38ba9c4b656bc606` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-98-001` - Related records: 1 ## 2. NTSB Safety Recommendation P-98-003 **Citation:** P-98-003 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1998-04-30 / 1998-04-30 TO THE RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION: Immediately notify those states & territories with gas pipeline safety programs of the susceptibility to premature brittle-like cracking of much of the plastic piping manufactured from the 1960s through the early 1980s & of the actions that the RSPA will require of gas system operators to monitor & replace piping that indicates unacceptable performance. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `cc1be7e1c86bf60ded836e6ba770aaf54f6f99cdb6f10a466845ccd701354091` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-98-003` - Related records: 1