Dual Entry Marks Pueblo Plant Milestone

As seen from Control Room monitors, Pueblo Chemical Agent-Destruction Pilot Plant technicians work together to perform their first dual entry into the Agent Processing Building toxic area.
As seen from Control Room monitors, Pueblo Chemical Agent-Destruction Pilot Plant technicians work together to perform their first dual entry into the Agent Processing Building toxic area.

A team of Charlie crew technicians performed their first dual entry Sept. 18, achieving a milestone as the last of four crews, called Alpha, Bravo, Charlie, and Delta, to experience four-person entries in the Agent Processing Building toxic area.

“This is a complicated entry and a great team effort,” said Kelly Sikes, plant shift manager, Pueblo Chemical Agent-Destruction Pilot Plant.

In order to perform calibrations on level indicating transmitters, equipment that transmits signals to the Control Room specifying the level of liquid in a holding tank, each set of entrants went through separate airlock rooms, and came together in a toxic maintenance area. Then, one set of entrants proceeded to the lower toxic area and the other to the upper toxic area. The upstairs team manipulated the valves in a specified sequence so the downstairs team could connect their instrumentation for the calibration. Once in position, radios enabled communication between the four entrants.

“There will be times when coordination between entrants on both levels of the APB will need to be performed,” he said.

Sikes said a four-person entry takes a coordinated effort between entrants, control room operators, instrumentation and control supervisors, entry support area tenders and an ESA supervisor.

“We know we are in capable hands in the event we have to make an entry like this in the future,” said Rick Holmes, Bechtel Pueblo Team project manager.

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