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Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)
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      Program Executive Office, Assembled Chemical Weapons Alternatives (PEO ACWA)


      Mission: The safe elimination of chemical weapons at Pueblo and Blue Grass by Sept. 30, 2023

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      Pueblo Chemical Agent-Destruction Pilot Plant (PCAPP)

      PCAPP is safely destroying the chemical weapons stockpile currently in storage at the U.S. Army Pueblo Chemical Depot in Colorado.

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Pueblo Plant Increases Munitions Processing Rate

Published: August 26, 2019 | Category: Events, PCAPP News
An ordnance technician uses a munitions handling lift assist unit to place disassembled 155mm projectiles onto a conveyor for neutralization processing inside an Explosive Containment Room in the Agent Processing Building of the Pueblo Chemical Agent-Destruction Pilot Plant. The plant has received approval from the Colorado Department of Public Health and Environment to increase the rate at which it processes chemical munitions from 24 per hour to 32 per hour.

An ordnance technician uses a munitions handling lift assist unit to place disassembled 155mm projectiles onto a conveyor for neutralization processing inside an Explosive Containment Room in the Agent Processing Building of the Pueblo Chemical Agent-Destruction Pilot Plant. The plant has received approval from the Colorado Department of Public Health and Environment to increase the rate at which it processes chemical munitions from 24 per hour to 32 per hour.

The Pueblo Chemical Agent-Destruction Pilot Plant has received approval from the Colorado Department of Public Health and Environment to increase the rate at which it processes chemical munitions.

“This is an important step in our mission and commitment to destroy the remaining chemical weapons in the stockpile,” said Walton Levi, site project manager, PCAPP. “Every munition we destroy brings us closer to that goal of ridding the world of them forever.”

To begin increasing the rate at which weapons are sent through the Munitions Treatment Units from 24 per hour to 32 per hour, the plant had to submit a Class 1 permit modification to the state. That request was approved in mid-August.

The 24-projectile-per-hour rate was imposed following pilot testing, which included recent Integrated Facilities Demonstrations to demonstrate plant proficiency and collect data used in setting standards and limitations. During IFDs, the plant exceeded 30 munitions per hour on both MTU lines for the first time, and reached up to 32.8 munitions per hour.

The state is reviewing data collected from the IFD runs for a Multiple Pathway Health Risk Assessment; once completed, the rate could be adjusted again.

“With this approved change, PCAPP now has the ability to increase productivity by as much as 30%, without sacrificing safety and quality,” said Ken Harrawood, project manager, Bechtel Pueblo Team. “The entire team – the Program Executive Office, Assembled Chemical Weapons Alternatives, Pueblo Chemical Depot, BPT and CDPHE – has worked collaboratively to realize this important milestone.”

The plant has destroyed more than half the 155mm projectiles containing mustard agent in the Colorado stockpile, reducing the total amount of agent by more than one-third. The U.S. Army Pueblo Chemical Depot stockpile also includes 105mm projectiles and 4.2-inch mortar rounds, all containing mustard agent. They have been stored at the U.S. Army Pueblo Chemical Depot since the 1950s and are being destroyed in accordance with an international treaty and a mandate from Congress.

PCAPP Event Articles

  • Pueblo Chemical Agent-Destruction Pilot Plant workers celebrate the destruction of 50% of the mustard agent in the Colorado chemical weapons stockpile on Feb. 26. An April 4 public celebration to mark the milestone has been canceled due to the COVID-19 pandemic.

    Pueblo Event Marking Mustard Agent Milestone Canceled

    Published: March 17, 2020
  • An ordnance technician at the Pueblo Chemical Agent-Destruction Pilot Plant reconfigures a 4.2-inch mortar round from its ready-to-use state to one ready for processing and destruction.

    Destruction Campaign Progresses at Pueblo Plant

    Published: November 15, 2019
  • Static Detonation Chamber components are placed on their concrete pad at the Pueblo Chemical Agent-Destruction Pilot Plant in Colorado. Three SDC units will be assembled to aid the main plant in its mission to destroy the chemical weapons stockpile at the U.S. Army Pueblo Chemical Depot.

    Pueblo Plant Begins Static Detonation Chamber Assembly

    Published: November 12, 2019
  • The Pueblo Chemical Agent-Destruction Pilot Plant is pursuing a final Part B Hazardous Waste Operating Permit, which will govern the processing of the remaining chemical munitions stockpile.

    Pueblo Plant Pursues Final Operating Permit for Main Process

    Published: November 8, 2019
  • Pleasant View Middle School students, along with teacher Todd Seip, watch training specialist Kent Ladd point out the parts and contents of a chemical weapon during a Pueblo Chemical Agent-Destruction Pilot Plant Training Facility tour.

    Chemical Demilitarization in the Classroom

    Published: October 30, 2019
  • A worker at the Pueblo Chemical Agent-Destruction Pilot Plant places 105mm projectiles that have been unboxed and reconfigured for processing on a pallet using a motorized lift assist.

    Pueblo Plant Destroys More Than 1,000 U.S. Tons of Chemical Warfare Agent

    Published: October 2, 2019
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