ONEOK GAS TRANSPORTATION, LLC

Incident Narrative

06/01/2018 AT APPROXIMATELY 12:08 PM 3RD PARTY CONTRACTOR STRUCK F-190 WHILE EXCAVATING FOR NEW PIPELINE CONSTRUCTION. F-190 WAS CLEARLY MARKED WITH FLAGS AND PAINT AS WELL; COMMUNICATIONS HAD BEEN MADE WITH THE CONTRACTOR BY COMPANY PERSONNEL. A ONEOK PIPELINE OPERATOR HAD COMMUNICATED WITH THE CONTRACTOR EXPRESSING THE LOCATION OF F-190 AND VERIFYING WHERE THE WORK WAS TO TAKE PLACE, AFTER COMMUNICATIONS THE PIPELINE OPERATOR WAS ON LOCATION SEVERAL DAYS BEFORE THE INCIDENT INSPECTING WHILE THE CONTRACTOR CROSSED F-190 IN A SEPARATE LOCATION. ONCE WORK WAS COMPLETED COMMUNICATIONS WERE ONCE AGAIN MADE CONCERNING ANY FURTHER WORK, THE CONTRACTOR EXPRESSED THEY WOULD NOT BE NEAR ANY ONEOK PIPELINES MOVING FORWARD. SPEAKING TO THE CONTRACTOR AFTER THE INCIDENT ON 6-1-18 THEY ADMITTED THEY MOVED PART OF THEIR EXCAVATION AND KNEW THE PIPELINE'S LOCATION AND FAILED TO CONTACT ONEOK. 06/01/2018 ONEOK ISOLATED THE 13 MILE SECTION OF F-190 BETWEEN OKARCHE TAKE OFF AND SIMMONS JCT, BLEW THE PIPELINE DOWN TO 0 PSI, CHECKED THE ATMOSPHERE AT THE INCIDENT LOCATION AND ONCE DEEMED SAFE EXCAVATION BEGAN. 06/01/2018 TELEPHONIC NOTIFICATIONS WERE MADE TO NRC (PHMSA) AND OKLAHOMA CORPORATION COMMISSION. 06/02/2018 ONEOK RESUMED EXCAVATION; ONCE EXCAVATED AND BELL HOLE MADE SAFE REPAIRS BEGAN, 4' OF 12"" PIPE WAS REMOVED AND REPLACED WITH LIKE KIND, X-RAYED, PURGED AND RETURNED TO NORMAL OPERATION AROUND 4:30 PM. 06/03/2018 NRC# 1214058 (48) HOUR REVISED INCIDENT REPORT FILED.