PWS Tech Specs O2 Candle Tester.pdf

Performance Work Statement (PWS) & Technical Specifications Oxygen Candle Test Equipment Ensemble

1.0 Introduction/Background

This Performance Work Statement (PWS) & Technical Specification outlines the requirements for a complete and integrated ensemble of test equipment, accessories, and supplies. The ensemble is intended for conducting conformance testing on sodium chlorate oxygen candles in strict accordance with the procedures and specifications outlined in MIL-DTL-32789.

2.0 Scope

The contractor shall provide a turnkey test equipment ensemble capable of performing all required examinations and tests as specified in paragraphs 3.5, 3.6, 3.7, 3.8, 3.9, and 4.6 of MIL-DTL-32789. The ensemble must be capable of verifying all performance characteristics and byproduct limits of the oxygen candles.

3.0 Applicable Documents

• MIL-DTL-32789: DETAIL SPECIFICATION, OXYGEN CANDLE, SODIUM CHLORATE

4.0 Performance Requirements

The test equipment ensemble shall be capable of performing, at a minimum, the following functions:

• Dimensional and Visual Examinations: The system must include calibrated instruments to verify the physical dimensions and visual characteristics of the oxygen candles and ignition devices as per section 4.5 of the specification.

• Burn Test: The ensemble must be capable of conducting a complete burn test of the oxygen candle in a controlled environment as specified in section 4.6.1. This includes:

- Containing the candle burn in a standard furnace.

- Igniting the candle using the standard ignition device.

- Monitoring and recording the burn time.

- Measuring and recording the oxygen flow rate throughout the burn to determine average and maximum burn rates.

• Byproduct Measurement: The system must be capable of sampling and analyzing the gas stream produced during the burn test to measure the concentration of the following byproducts, as specified in section 4.6.1.5:

- Water vapor

- Total chlorine and other oxidizing chlorine compounds

- Carbon monoxide

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• Data Acquisition and Analysis: The ensemble shall include a data acquisition system to record all sensor data during the tests. The system must be capable of performing the necessary calculations to determine conformance with the requirements of MIL-DTL-32789.

• Safety: The ensemble shall be designed for safe operation with high-concentration oxygen environments and at elevated temperatures, in accordance with the guidance provided in section 6.3.4 of the specification.

PERFORMANCE WORK STATEMENT (PWS) Oxygen Candle Test Equipment Ensemble

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Technical Specification

Oxygen Candle Test Equipment Ensemble Components

The following is a list of the required components for the test apparatus, as detailed in MIL-DTL-32789, Figure 1 and Table II.

Component Technical Specification / Requirement

Standard submarine candle furnace

Stainless-steel candle furnace with a 16-inch diameter, 29-inch height, and 86-pound weight, equipped with dual fiberglass filters. It must include a stainless-steel cylindrical insert (6.5-inch diameter, 11.5-inch height) to support the test candle. The furnace must have a pressure gauge (0 to 15 psig), and a relief valve set to 13+/-2 psig. The furnace must be capable of reaching up to 1000° C

Laboratory scale A calibrated laboratory-quality scale with a minimum range of 0 to 30 pounds (0 to 15 kg) and a resolution of 0.05 pounds (20 grams) or better.

Pressure transducer A calibrated pressure transducer with a range sufficient for the test (typically less than 5 psig), an accuracy of +/-0.5% or better, and within its calibration period.

Flow meter A mass flow controller or turbine meter, calibrated and within its calibration period, suitable for oxygen flow measurement. The average flow may be up to 90 standard liters per minute, with a maximum instantaneous flow of up to 450 standard liters per minute.

Thermocouple or thermistor A standard commercial thermocouple or thermistor, calibrated and within its calibration period.

Data acquisition computer with any needed peripherals

A computer device capable of controlling, recording, displaying, and manipulating sensor data from all instrumentation. It must be compatible with all sensors and capable of sampling at a rate of at least every 5 seconds.

In-line particulate filters - 6 month supply

6 month supply of standard commercial filters for collecting salt particulates that could affect flow & sensor responses. The filter should be cleaned or replaced daily.

Water vapor sensor A calibrated hygrometer capable of reporting dew point or milligrams of water per liter. The sensor should be able to measure dew point temperatures as low as -15 deg F (-25 deg C).

Chlorine measurement An electrochemical or infrared device with a resolution of 0.1 ppm or better. The sensor must have equal or greater sensitivity to chlorine dioxide (ClO2) and be calibrated and zeroed each day of testing. It should be able to measure concentrations that may exceed 30 ppm.

Carbon monoxide measurement

An electrochemical or infrared device with a resolution of 1 ppm or better. The sensor must be calibrated and zeroed each day of testing and should be able to measure concentrations that may reach 300 ppm.

Bubbler flask and associated tubing

A commercial glass 1000-ml Erlenmeyer laboratory flask with a two-hole stopper and flexible tubing.

Exhaust diverter valve A two-position, three-way ball valve.

Calibration gas for chlorine sensor

A certified chlorine gas mixture at a concentration recommended by the sensor manufacturer.

The gas bottle must be within the certification period provided by the vendor.

Calibration gas for carbon monoxide

A certified carbon monoxide gas mixture at a concentration recommended by the sensor manufacturer. The gas bottle must be within the certification period provided by the vendor.

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Component Technical Specification / Requirement

Zero air calibration gas Certified zero air. The gas bottle must be within the certification period provided by the vendor.

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5.0 Installation and Training

5.1 Installation Requirements

Installation shall be conducted on-site at the government facility by a highly trained, OEM-certified (preferred) Service Engineer. The installation process must adhere to ISO 9001 quality procedures (or equivalent certified quality management standards) to ensure consistency, high-quality setup, and baseline calibration.

5.2 Facility & Site Preparation Requirements

The contractor shall provide a comprehensive Site Preparation Guide within 15 days of contract award, if required.

The equipment provided must be compatible with standard laboratory utility infrastructures, bounded by the following parameters:

Utility / Requirement Maximum Allowable Specification

Electrical Power 110-120V AC, 60Hz or 208V AC, 50/60Hz (Single Phase). If possible, the system shall utilize standard NEMA 5-15P. Vendor must specify if higher amperage is required.

Pneumatics / Gases If clean dry air (CDA) or Nitrogen (N2) is suitable for operation in lieu of zero air, the system must accept standard laboratory supply lines (60-80 psi).

Exhaust / Venting If testing produces outgassing from specific samples, the vendor must specify the localized exhaust flow rate required (CFM) for safe operation.

Footprint & Weight The vendor must define the exact dimensional footprint (W x D x H) and total system weight to ensure it fits on a standard laboratory bench.

5.3 Training Requirements

Upon successful installation and site acceptance testing, the Contractor shall provide a minimum of one (1) day of operator familiarization training for up to six (6) individuals. Training must cover hardware setup, safe handling of test specimens, software recipe creation, and NIST-traceable calibration, as applicable. Training must include:

• Overview of equipment hardware and various components.

• Step-by-step procedures to test Oxygen Candles in accordance with performance requirements identified in section 4.0 above as well as MIL-DTL-32789.

• Basic software navigation, test programming, and data export.

• Routine user-level maintenance and safety procedures.

• User manual (digital storage device or hardcopy)

6.0 Maintenance and Lifecycle Support

6.1 Maintenance Support Plan

To ensure improved instrument performance, increased uptime, and reduced total cost of ownership, the Contractor must offer a comprehensive post-warranty support plan. This coverage shall begin at the end of the standard 1-year warranty period. The instrument maintenance support plan shall extend to the end of the second year of ownership, or 1-year after the initial warranty period. The plan must include:

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• Calibration or replacement of all calibration standards: DLA ships the calibration standards to contractor for calibration at no cost OR contractor schedules a certified technician to come for one (1) on-site visit to perform calibration on standards.

• Technical Support: priority telephone and email troubleshooting support.

• Repair Coverage: complete corrective repair coverage, including all service, parts, accessories, technical labor, and travel costs.

• Consumables: discounted pricing on standard consumable purchases for the life of the agreement.

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7.0 Administrative Requirements

7.1 Period of Performance

Delivery of all hardware, software, and accessories shall be completed within 90 days after the date of award.

Installation and training shall be coordinated with the technical point of contact upon delivery.

7.2 Pricing

Pricing shall include all costs for shipping and delivery (FOB Destination) to the address specified below.

7.3 Notice of Delivery

Contractor shall give notice to Edward Francoeur and Mike McClain when the instrument is to be delivered.

7.4 Delivery Address / Marking Instructions

Attn: Edward Francoeur DLA Product Test Center 700 Robbins St., Bldg. 5-D Philadelphia, PA 19111

7.6 Invoicing

All invoices must be submitted through Wide Area Workflow (WAWF). See DFARS Clause 252.232-7006 Wide Area Workflow Payment Instructions for detailed instructions. The DoDAAC for this action is SL0701.

8.0 Certification and Verification

8.1 The contractor shall provide instrument certification or verification of instrument performance upon completion of installation (IQ/OQ).

8.2 A NIST Traceable ANSI/NCSL Z540.1 certificate (with data) shall be provided for calibrated components or sub-components, as applicable.

9.0 Warranty

A minimum one-year comprehensive warranty covering all parts, labor, travel, food, and lodging for one service technician must be included.

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