Chemicals of Security Concern (CoSC) Risk Reduction Goals.pdf
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- Attached to
- Toxic Industrial Chemical (TIC) Neutralization
- Solicitation number
- W911SR-26-X-0002
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This document outlines technical solution performance goals for reducing risks associated with Chemicals of Security Concern (CoSC) across multiple evaluation criteria. The performance criteria of system size, reactant ratio, and scalability are mandatory for all solutions, while solutions must achieve a 50% reduction in overall hazard through any combination of three optional criteria: reduction in toxicity, reduction of disseminability, or reduction in volatility.
System size goals require proposed solutions to have a mass less than the target CoSC (threshold), with a preferred maximum of 500 kg and an objective of 36 kg or less; large bulk container solutions have a ceiling weight of 3,000 kg. For reactant ratio, if reactants are required, the threshold is a 2:1 ratio with an objective of less than 1:1. Scalability must demonstrate that the approach meets or is expected to meet applicable performance goals at four scales: subscale (less than 100mL), laboratory scale (100-1,000mL), field-testing scale (1-10L), and bulk container scale (1,000L liquid totes or 100lb compressed gas cylinders). For toxicity reduction (if disseminability is not the focus), solutions must reduce CoSC toxicity by 50% at minimum or below the OSHA Permissible Exposure Limit as an objective, with reduction occurring within 7 days (threshold) or 2 hours (objective). For disseminability reduction, solutions must transform the CoSC into a non-aerosolizable liquid or gel (threshold) or solid (objective). For vapor pressure reduction, goals include a 50% reduction from initial value or sealing the surface to prevent vapor escape (threshold), or achieving vapor pressure of ≤0.0007 mmHg (objective). Volatility reduction requires a 50% reduction from initial value or surface sealing/encapsulation (threshold), or achieving volatility of ≤10.5 mg/m³ at 25°C (objective).
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Chemicals of Security Concern (CoSC) Risk Reduction Goals
Technical Solution Performance Goals: The performance criteria of system size, reactant ratio (reactive candidates), and scalability are applicable to every case; however, any combination of the other three performance criteria (reduction in toxicity, reduction of the ability to disseminate , reduction in volatility) that achieves a 50% reduction in overall hazard, whether through a single criterion or combination, is acceptable.
Performance Goals. The following are the criteria for technical solution performance:
1. System Size:
o Definitions Large Bulk Liquid Containers: 1000L totes.
Large Bulk Gas Containers: 100lb compressed gas cylinders.
o Restrictions If the proposed solution is readily available at a Chemical Production Facility, this criterion will not apply.
System footprint is not restricted o Goals The proposed technical solution’s mass is:
1. Threshold: Less than the mass of the target CoSC.
1. Preferred: ≤ 500 kg.
2. Ceiling Value: Large bulk container solutions have a maximum mass (ceiling weight of equipment) of 3,000kg.
2. Objective: ≤ 36 kg.
2. Reactant Ratio:
o Definitions Reactant: A substance added to the CoSC to alter its chemical properties.
o Restrictions If the technical solution does not require the addition of a reactant, this criterion will not apply.
o Goals
If reactants are used, the reactant-to-CoSC ratio is:
1. Threshold: ≤ 2:1.
2. Objective: <1:1.
3. Indication/Proof of Scalability:
Sub-scale: Less than 100mL (minimum required for analytical laboratory testing).
Laboratory Scale: 100-1000mL.
Field-Testing Scale: 1-10L.
Bulk Container Scale: 1000L totes (liquid) and 100lb compressed gas cylinders (gas).
o Restrictions N/A o Goals The approach meets, or is expected to meet, the applicable performance goals at four scales:
subscale, laboratory scale, field-testing scale, and bulk container scale.
Reducing Toxicity (Evaluated Only if the Solution Does Not Focus on Disseminability)
1. Reduction in Toxicity o Definitions Toxicity: Measured based on the concentration of the CoSC present and based on the following exposure limts.
1. IDLH – immediately dangerous to life and health
2. PEL -the OSHA Permissible Exposure Limit. If the PEL is not published, another federal exposure limits may be used.
o Restrictions
Set-up time is not included in the duration evaluation.
The toxicity of the resulting reactants will only be considered if their exposure limits are equal to or higher than the original CoSC.
o Goals
The technical solution will reduce the CoSC’s toxicity:
1. Threshold: By 50%.
2. Objective: below the PEL.
AND
The reduction in toxicity will occur within:
1. Threshold: ≤ 7 days.
2. Objective: ≤ 2 hours.
Performance Goals for Reducing Disseminability (Evaluated Only if the Solution Does Not Focus on Toxicity)
To pass the performance goals for reducing disseminability, only one of the following criteria must be met.
1. Reduction in Disseminability o Definitions Disseminability -the potential to be aerosolized and/or weaponized/ released for harmful purposes.
o Restrictions
Evaluation of a solution’s disseminability will be measured qualitatively to assess its weaponization potential using CBARR’s subject matter expertise.
o Goals The technical solution will reduce the CoSC’s disseminability by:
1. Threshold: Transforming its final state into a non-aersolizable liquid or gel.
2. Objective: Transforming its final state into a solid.
2. Reduction in Vapor Pressure
Vapor pressure will be measured using a standard method or evaluated based on published values.
o Restrictions N/A o Goals
The technical solution will reduce the CoSC’s vapor pressure by:
1. Threshold: 50% reduction from the initial value.
a. Alternative Approach: Sealing the surface of the CoSC to prevent vapor escape will meet the threshold.
2. Objective: Achieving a vapor pressure of ≤0.0007 mmHg.
3. Reduction in Volatility
Volatility will be measured at 25°C.
o Restrictions
N/A o Goals
The technical solution will reduce the CoSC’s volatility by:
1. Threshold: 50% reduction from the initial value.
a. Alternative Approach: Sealing the surface/encapsulation of the CoSC to prevent vapor escape will meet the threshold.
2. Objective: Achieving a volatility of ≤ 10.5 mg/m³.
| Reducing Toxicity (Evaluated Only if the Solution Does Not Focus on Disseminability) |
| Performance Goals for Reducing Disseminability (Evaluated Only if the Solution Does Not Focus on Toxicity) |
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