RID SOW_Redacted.pdf

STATEMENT OF WORK

Radiological Threat Assessment Support

Background

The 1st Area Medical Laboratory requires a rapidly deployable, hand held, low resolution radioisotope identification device (RID) that will allow for theater validation level analysis of radiological/nuclear threats in field laboratory and on-site environments.

Schedule Due to the urgency of this need, it is imperative that this work begins upon receipt of the approved funding agreement.

Project Financial Closeout: Requirement is a one-time purchase.

Scope of Deliverables The manufacturer shall provide three RID with the following qualifications.

The RID shall be handheld and battery-powered.

The manufacturer shall supply all accessories (such as battery packs, charging cable, etc.) for use of the RID without need of further procurement.

The RID shall be capable of operating at temperatures from –20 °C to +50 °C.

The RID shall not require any external devices (e.g., laptop personal computer) for the detection and identification of radioactive material.

The RID shall have the ability to transfer data to an external device, such as a computer. The transfer interface shall be fully described in the manual and should use a communications port that meets the requirements of Ethernet, USB, wireless, or other electronic means such as a removable media device.

Consideration should be given to data security when using wireless data transfer techniques. The naming convention used for each file shall be defined in the manual.

Switches and other external controls shall be designed such that the RID can be operated properly while minimizing accidental or erroneous switch operation when the user is wearing gloves including those that are used in cold weather or contamination control.

The display and external control functions shall be visible in low light (<150 lux) and bright light (>10,000 lux) conditions.

Using the available controls on the RID, the user shall have the ability to:

o Switch from scanning for increases in radiation levels to identification of radionuclides.

o Perform a radionuclide identification and save the results.

o Perform a manual calibration or stabilization when prompted or through an access controlled menu.

o Access spectrum files and select any or all of them for transfer or deletion.

o Transfer radionuclide identification data files.

The display shall provide the following indications, when appropriate:

o Gamma alarm o Neutron alarm o Radionuclide cannot be identified (e.g., “not identified,” “unknown”) o Count rate readings o Count rate is too high for radionuclide identification o Radiological over-range conditions (e.g., “over-range” or “high counts”) o Radionuclide categorization, identification, and confidence indicator o Access mode (e.g., routine or restricted) o Battery status o Operational status (e.g., normal, calibration needed, stabilization needed) o Radiation protection alarm o High or low detector count rate conditions indicative of a detector failure o Energy stabilization or calibration invalid or not acceptable

The following information and control shall be provided for the restricted access user through access controls or special commands that are described in the manufacturer provided technical manual:

o Access to and control of operating parameters (e.g., radionuclide library, integration time) o Access to and control of data logging process o Access to status indication criteria including the ability to set the exposure rate for activation of the radiation protection alarm o Access to energy and/or efficiency calibration information

The RID shall provide an audible alarm to alert an operator to different types of conditions (e.g., detection of gamma radiation, detection of neutron radiation, battery low, and fault detection). Different techniques may be used by the RID to differentiate between each type of event that caused an audible alarm. The description shall be provided in the manual.

The frequency of an audible alarm shall be from 1000 Hz to at least 4000 Hz.

Where an intermittent alarm signal is provided, the interval shall not exceed 2 seconds. The A-weighted volume at a distance of 30 cm from the RID shall be at least 80 dB(A) and shall not exceed 100 dB(A).

It shall not be possible to disable both the vibration and audible alarm indications simultaneously, except through the restricted mode. When both alarm signals are off, an indication shall be provided on the display to inform the user of this condition.

The manufacturer shall state the time required for the RID to become fully functional from either a dead start or when in a standby mode (i.e., HPGe detector is cooled but the RID is not on). The maximum time shall be less than 5 min.

The requirements for battery power are as follows:

o The RID shall have the ability to operate for a minimum of 5 h of continuous use (non-alarm state) in standard test conditions (see Table 1).

Table 1. Standard Test Conditions

INFLUENCE QUANTITY STANDARD TEST CONDITIONS

Ambient Temperature 18 to 25 C Relative Humidity ≤75% Atmospheric pressure 70-103.3kPa Electromagnetic field of external origin Natural conditions without the presence of man-made generators Magnetic induction of external origin Natural conditions without the presence of man-made generators Gamma background ≤25µR/h Neutron Background ≤200 n/s/m2 (note that this neutron background is considerably higher than at sea level)

For the purposes of this standard the radiological unit of exposure rate, R/h, is used.

Radiation test fields established by measurement shall be made using devices traceable to NIST or equivalent recognized organizations. Other than ambient background, measured radiation test fields shall be determined at an uncertainty of ±20% with a coverage factor (k) of 1. When radiation fields are determined through calculation, the technique used shall be described in the test record. Measurement of test fields for climatic, dynamic, and electromagnetic conditions shall be made using equipment traceable to NIST or equivalent organizations.

o The manufacturer shall state the expected continuous operating time using the recommended batteries at standard test temperature conditions and at −20 °C. The batteries selected should enable the RID to operate for at least 1 hour at −20 °C.

o The RID shall have a low-battery indication.

o Non-rechargeable batteries shall be widely available, shall not be unique to the RID, and shall be field replaceable (e.g., AA, 9 V) without the use of special tools.

o Battery chargers for rechargeable batteries shall meet applicable US electrical standards.

o The RID shall be capable of operating from an external DC source (e.g., 12V vehicle electrical system, battery pack, AC converter).

o It shall be possible to switch batteries without powering down the RID.

The manufacturer shall state the range for gamma-ray exposure rate or dose-equivalent rate measurement and for neutron count rate indication. The exposure rate range (or equivalent dose-equivalent rate range) shall be at least 25 μR/h to 5 mR/h.

The RID shall have the ability to internally store at least 10 complete identification data files and deliver them in the ANSI N42.42 format. Each data record shall contain the following information:

o RID manufacturer name, model, and serial number o Software version o Gamma detector kind o Date and time of measurement o Measured gamma-ray radiation level (e.g., exposure rate) o Background spectrum o Live time and real time for background spectrum o Measured spectrum o Live time and real time for measured spectrum o Energy calibration for the background and measured spectrum o Radionuclide identification results o Confidence indication o Neutron detector kind (e.g., He-3, Li-Glass) and volume o Measured neutron radiation levels (e.g., count rate)

An alarm shall be provided to alert the user that the ambient radiation intensity is above a user-selected threshold level (typically 2 mrem/h). The alarm shall be both audible and visual, and shall only be adjustable through the restricted access mode. The alarm shall have an “acknowledge” or other similar control to silence the audible function. It shall not be possible to switch off all alarm indicators at the same time.

The manufacturer shall state in its manual whether or not the RID is certified for use in explosive atmospheres. If certification is claimed, documentation shall be provided by the manufacturer. Certification shall be based on UL 913.

The RID shall have the ability to identify depleted uranium (DU), highly enriched uranium (HEU), and weapons-grade plutonium (WGPu) at 50 µR/h above background as the radiation level within a defined source-to-RID distance for verification of identification capabilities.

Table 2. Special Nuclear Material and Mass-based Sources

MATERIALS ISOTOPIC COMPOSITION

DU 0.2% U-235

HEU ≥90% U-235

WGPu ≤6.5% Pu-240 and >93% Pu-239

While in a scan or search mode, the alarm rate providing an indication of radiation field changes shall be less than one alarm over a period of 1 h when tested in an area with a stable background (only natural fluctuations) at the levels stated in Table 1. The test method of two alarms over a time period of 5 hours is based on a 95% upper confidence bound for a one-sided Poisson distribution.

While searching, the RID shall alarm or provide an indication when the radiation field changes from ambient background to that with a source present. The alarm or indication shall activate no later than 1 second after the RID passes through the test point (point of closest approach) or the test point moves past the RID.

The radiation field at the test point shall be 10 μR/h and the transient speed 0.5 m/s.

The RID shall alarm or provide an indication when the neutron radiation field changes from ambient to that with a neutron source present. This requirement is verified using a 20,000 (±20%) neutrons/s Cf-252 source surrounded by a 4-cm thick high density polyethylene (HDPE) with the center of the moderator placed at a distance of 25 cm from the reference point of the RID. The alarm or indication shall activate no later than 1 s after the RID passes through the test point (point of closest approach) or the test point moves past the RID. Testing shall be performed in a location where neutron scatter is kept to a minimum. The source assembly, movement device (i.e., track), and the RID shall be at least 1 m from any item or surface (e.g., storage cabinets, floor, ground surface).

If the RID is exposed to a radiation field that is greater than the manufacturer-stated maximum when performing measurements, an alarm indicating (for example) “over-range” or “high counts” shall be activated and shall remain activated until the radiation field is reduced or the alarm is reset or acknowledged by the user. If the alarm is reset or acknowledged by the user without the radiation field being reduced, a visual indication shall be provided indicating that the radiation field is still present. The time required to return to non-alarm condition after the radiation field is returned to background levels without any user interaction (other than acknowledging an audible alarm) shall not be greater than 1 min.

Gamma radiation at exposure rates of up to 10 mR/h from Cs-137 shall not cause the RID to indicate the presence of neutrons or activate a neutron alarm.

In addition, the RID shall be able to detect the presence of neutrons or activate a neutron alarm while being exposed to the 10 mR/h gamma radiation field.

The general requirements for radionuclide identification are as follows:

o An indication shall be displayed (e.g., “not identified”) if the RID indicates the presence of a source but is not able to identify a radionuclide.

o The RID should indicate if the exposure rate is too low or too high for radionuclide identification.

o An indication should be displayed as to the confidence of the radionuclides identified. The indication should be numeric (e.g., 1 to 10).

The manufacturer shall state the basis of the value in the user manual.

The manufacturer shall state the radionuclides that the RID can identify. The list of radionuclides and materials shall include those listed in Table 3, at a minimum.

Table 3. Radionuclide Library Am-241 Cs-137 K-40 Th-232 DU Ba-133 Ga-67 Tc-99m U-235 HEU Co-57 I-131 Tl-201 U-238 WGPu Co-60 Ir-192 Ra-226 Pu-239 RGPu

The RID shall be able to identify the radionuclides listed in Table 4 (except for Cf-

252) at an exposure rate of 50 μR/h above background established at the reference point of the RID within an integration time of 2 minutes or that stated by the manufacturer, whichever is shorter.

Table 4. Test Sources

Am-241 Tc-99m Ba-133 Tl-201 Co-60 Ra-226 Cs-137 Th-232 Cf-252 DU Ga-67 HEU I-131 WGPu

The RID shall be able to identify Cs-137 and Co-60 while those sources are shielded by a 5 mm steel plate.

The RID shall be able to identify a minimum of two radionuclides simultaneously within an integration time of 2 min or that stated by the manufacturer, whichever is shorter.

The RID shall not identify a radionuclide that is not present when operated in a stable and low ambient radiation background.

The RID shall have a spectral resolution of not more than 4.5% full width at half peak maximum at 662 keV.

The RID shall be able to function (including having a readable display) over an ambient temperature range from −20 °C to +50 °C.

The RID shall be fully functional when operated in relative humidity levels of up to 93% relative humidity (RH) at 35 °C.

RIDs shall be protected from the ingress of dust and spraying water (rain). Dust shall not penetrate in a quantity to interfere with satisfactory operation of the instrument or to impair safety, and water sprayed at an angle up to 60° on either side of the vertical shall have no harmful effects. This is equivalent to IP Code 53 from IEC 60529.

The RID shall be able to operate when switched on at the cold temperature limit (−20 °C) or high temperature limit (50 °C).

The RID should not be affected by radio-frequency (RF) fields over the frequency range of 80 MHz to 2500 MHz.

The electromagnetic (EM) fields emitted by the RID at 3 meters shall be less than what is shown in Table 5.

Table 5. Emission Frequency Limits

Emission Frequency Range (MHz) Field Strength (µV/m at 3 m) 30 to 88 100

88 to 216 150 216 to 960 200

>960 500

The RID shall be fully functional when exposed to a 100 A/m (1.3 G) 60 Hz magnetic field. The indication of the magnitude of the radiation field as well as any spectral response shall not change while being exposed in three mutually orthogonal orientations relative to the magnetic field.

The RID shall not be affected by exposure to electrostatic discharges (ESD) at intensities of up to ±6 kV using the contact discharge technique described in IEC 61000-4-2.

The RID shall withstand exposure to vibrations associated with the operation of handheld or hand-carried equipment, in accordance with MIL-STD 810 and IEC 60721-3-7. The physical condition and functionality of the RID shall not be affected during or after the exposure (e.g., solder joints shall hold, nuts and bolts shall not come loose).

The RID shall function properly after exposure to shock pulses of 50 g peak acceleration, each applied for a nominal 11 ms in each of three mutually orthogonal axes. The physical condition of an RID shall not be affected by these shocks (e.g., solder joints shall hold; nuts and bolts shall not come loose).

The RID’s response, both gamma-ray and neutron, shall be unaffected by microphonic conditions such as those that may occur from low-intensity impacts from sharp contact with hard surfaces.

The RID should be designed to withstand being dropped from a height of 1 meter onto a concrete surface.

The manufacturer shall provide the following information, as a minimum:

o Contact information for the manufacturer including name, address, telephone number, fax number, e-mail address, etc.

o Model name or number, serial number, and software and firmware version numbers.

o Type of radiation detector(s) used (e.g., NaI, CZT, HPGe, 3He). If pressurized detectors are used (e.g., He-3), the manufacturer shall state the size, pressure, and volume of the detector.

o Size and weight (with batteries installed).

o Manufacturer’s website information.

o Battery requirements.

o Recommended operational parameters such as detector response, false alarm probability, alarm thresholds, operating parameters, and radionuclide libraries.

o Static measurement time.

o Complete description of the RID.

o Case specification classification.

o Inclusion of any hazardous material that may require additional regulation (such as radionuclide check source, pressurized gases, corrosive materials).

o List of radionuclides that are identified by the RID.

o Description of the confidence level indication.

o Exposure or dose-equivalent rate range.

o Exposure or dose-equivalent rate calibration results.

o Over-range exposure rate values for gross counting and identification.

o Energy range.

o Full width-half max (FWHM) value for Cs-137.

The manufacturer shall supply an operation and maintenance manual (paper and electronic) containing the following information for the user:

o Operating instructions and restrictions o Functional verification process o Spare parts list o Troubleshooting guide o Description and protocol for communication methods of transmitting and receiving data o Photos or schematic drawings that describe the location of the detector(s) and associated reference point(s) The manufacturer shall provide a case for storage and transportation which contains the RID, all accessories, and documentation in fitted compartments. The case shall meet standards specified in NATO STANAG 4280, or equivalent.

The manufacturer should provide a soft case, useful for temporary storage of the RID during intermittent use.

Security No security requirements for this request.

Funding Contract funded means of Government funded purchase request through

GFEBS/WAWF.

Interagency Acquisition Authority

a. This agreement is entered into pursuant to the authority of Economy Act of 1932 (31 U.S.C. 1535), and adheres to applicable Federal Laws and Regulations.

b. This agreement is entered into in compliance with the Federal Acquisition Regulation (FAR) Parts 6, 17.5 and 17.6, and the work requested will not place the DOE and its contractors in direct competition with the private sector.

Human Subjects Research The data to be provided to the ARA or USARO in support of work being done under does not contain "identifiable private information" and the project does not involve interaction/intervention with “human subjects” as those terms are defined in 10 C.F.R.

Part 745.102.” To the extent that any sponsoring agency becomes aware at any time that the data does, or reasonably may include such "identifiable private information" the sponsor will immediately notify the 20th CBRNE G2.