Observation of Waste Treatment and Immobilization Plant Low Activity Waste Melter and Melter Off-gas Process System Hazards Analysis Activities [HIAR-WTP-2013-10-21]
This Independent Activity Report documents an oversight activity conducted by the Office of Health, Safety and Security’s (HSS) Office of Safety and Emergency Management Evaluations from October 21-31, 2013, at the Hanford Waste Treatment and Immobilization Plant (WTP). The activity consisted of HSS staff reviewing the Insight software hazard evaluation (HE) tables for hazard analysis (HA) generated to date for the WTP Low Activity Waste (LAW) Melter and Off-gas systems, observed a limited portion of the HA for the LAW Secondary Off-gas System, and met with Bechtel National, Incorporated (BNI) responsible individuals to discuss both previous and more recent HSS observations. Independent Oversight conducted this observation after BNI had provided formal training to the HA teams on Hazards and Operability (HAZOP) analysis techniques and BNI’s recent implementation of changes to HA approaches intended to streamline the HA process. An additional purpose was to follow up on BNI’s disposition of opportunities for improvement identified by Independent Oversight in the 2012 LAW Melter Processing System HA.