20R0133 Amendment.docx

N6893620R0133

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

SOLICITATION AMENDMENT 0001

ADJUSTMENT TO THE SPECIFICATION

As seen below in the text highlighted in yellow, the Specification for the X-ray Cabinet has been updated as follows:

Section 13.e.iii of the specification has been updated in order to allow greater flexibility in meeting the requirement.

Section 13.f.ii of the specification has had the “at least” verbiage removed.

Section 13.g.vi of the specification has been updated to adjust the y and z direction values, which were inadvertently swapped.

RESPONSE TO INDUSTRY QUESTIONS

1. Must the X-ray cabinet be capable of being transported through a 70” wide by 83” tall door?

Government Answer:

The components of the X-ray cabinet must fit through the external doorways of the facility the cabinet will be housed in, which are 70” wide and 83” tall. The X-ray cabinet may be assembled on site once the pieces fit through the doorway, but the manufacturer must fully assemble the x-ray cabinet.

2. Must the assembled X-ray cabinet not exceed the 95” wide, 51” deep, 87” tall dimensions?

Government Answer:

The X-ray cabinet must not exceed the 95” wide, 51” deep, 87” tall dimensions, as these dimensions are defined by the space allotted for the X-ray cabinet.

3. What parameters are expected for the source to maintain for 60 hours?

Government Answer:

The X-ray beam must be stable over long periods of scanning. As such, the X-ray cabinet must be able to do at least a 60-hour continuous computerized tomography (CT) scan.

4. Must the X-ray cabinet have a focal spot size of 3 µm or less at up to 7 W?

Government Answer:

The focal spot size of 3 µm or less at up to 7 W is a requirement for this procurement, as higher wattage or focal spot size would create issues for the anticipated testing.

5. Must the X-ray cabinet have the ability to select and change targets without opening the x-ray tube (with target options of molybdenum, tungsten, silver, and copper)?

Government Answer:

Section 13.e.iii of the specification has been updated to allow additional options of meeting the requirement. The multiple material option is still prefered over digital filters due to the potential of losing data when filters are applied.

6. What does the “unlimited life cycle” requirement mean?

Government Answer:

The intent of the unlimited life cycle requirement (as seen on page 7 of the Solicitation in Section C) is to have an open source tube. The government desires to be able to use its own personnel to replace consumables like O-rings and filaments, without having to contract for the replacement of the entire x-ray tube every time there is a minor issue of maintenance.

7. Is it acceptable to respond to the solicitation via email and what is the submission date for responses?

Government Answer:

The due date for submission of proposals has been updated to September 7th, 2020, however offerors may submit proposals any time before that. Responses to the solicitation may be submitted via email to the email addresses listed in the solicitation (the preferred point of contact email is luke.s.kelley@navy.mil).

8. Is this procurement ITAR restricted?

Government Answer:

At this time, this procurement is not anticipated to be ITAR restricted.

9. Is this a 6 axis system with tube to detector magnification? Per the original solicitation it was 4 or 5 axis.

Government Answer:

The following axis information found at 13.g.vi of the specification is the minimum requirement:

vi. Axes travel must be at least:

0. 17” in X direction (front wall, window, to back wall)

0. 28.5” in Y direction (between detector and tube)

0. 13” in Z direction (floor to ceiling)

0. 30° in tilt (both positive and negative)

0. 360° in rotation Range of movement beyond those listed above is welcome, but not required.

10. Is there any anticipation of growing the part envelope size above the 12”x12” envelope?

Government Answer:

The 12”x12” envelope is the minimum requirement, as seen in following portions of the specification:

Section 13.f.vi of the specification states that the X-ray machine mut be capable of scanning “at least 16x16 inch panel dimensions, 12-inch diameter cylindrical CT envelope”.

Section 14 of the specification also states that the “CT collection must be capable of producing a CT scan of an item at least 12” diameter x 12” length”.

11. Is there a preference between reflection and transmission sources?

Government Answer:

A reflection source is preferred unless the manufacturer can provide information related to why a transmission source is recommended for use in their particular system.

SECTION A - SOLICITATION/CONTRACT FORM

The required response date/time has changed from 31-Aug-2020 03:00 PM to 09-Sep-2020 03:00 PM.

SECTION C - DESCRIPTIONS AND SPECIFICATIONS

The following have been modified:

X-RAY CABINET SPECIFICATIONS

X-ray Cabinet Specifications

1. X-ray cabinet must meet the following definition: An X-ray system with the X-ray tube installed in an enclosure which, independently of existing architectural structures except the floor on which is may be placed, is intended to contain at least that portion of a material being irradiated, provide radiation attenuation, and exclude personnel from its interior during generation of x radiation.

2. X-ray cabinet must have a permanent floor.

3. X-ray cabinet shall be registered with the FDA and meet Title 21, Code of Federal Regulations (21 CFR).

a. X-ray cabinet shall include a permanently affixed or inscribed manufacturer label meeting requirements of 21 CFR with the following information:

i. The full name and address of the manufacturer of the product

ii. The place, month, and year of manufacture. The month and year shall be provided without abbreviation and the year shall be a 4-digit number.

iii. X-ray cabinet manufacturer label may include information related to the manipulator, serial number, model type, test conditions, job number, etc.

4. X-ray cabinet shall be equipped with adequate shielding for a 225 kilo-volts potential (kvp) X-ray tube in order to emit less than .5 milliroentgen (mR) per hour at 5 cm from all external surfaces of the cabinet when operated at maximum rated current and voltage during a radiation safety survey with any Radiological Affairs Support Office (RASO) approved survey meter. RSO survey must be successfully completed prior to government acceptance of cabinet.

5. X-ray cabinet must be equipped with at least one emergency stop button.

6. X-ray production must be limited with a key.

a. If the key is not engaged, the X-ray production must not start.

b. If the key is removed mid-production, X-rays must stop.

7. X-ray cabinet shall be capable of being transported through a 70”W x83”H door.

a. This requirement can be met prior to assembly if assembly takes place at the final installation location of the cabinet by a trained professional.

b. This is the maximum size of the door; any required fixturing for movement must be included in calculation to determine if x-ray cabinet can fit through the door.

8. Installation must be performed by supplier personnel. All specialty tools must be brought in with the supplier’s installation personnel. The USG can provide support in the following areas:

a. Fork lifts, pallet jacks, or wheeled moving platforms

b. Conventional hand tools

9. When assembled, X-ray cabinet shall not exceed the following dimensional requirements:

a. 95” wide, 51” deep, 87” tall.

b. Minimum size of cabinet is defined by axis travel and CT envelope size.

10. Cabinet shall include self-leveling feet or other means of leveling the cabinet after movement. X-ray cabinet shall be compatible with the following power availability:

a. 208 Volts AC power (VAC)

b. 25 Amp

c. 50/60 HZ

d. 1 Phase

e. TN-S earthing system

f. Supplier shall provide information on plug required for operating X-ray cabinet or shall include bare wires and allow government to provide plug.

11. X-ray cabinet system shall be capable of the following operations

a. Computed Tomography (CT) scans

i. Must be able to perform a 60+ hour CT scan while maintaining stability.

b. Live-view 2 dimensional X-ray

c. 2 dimensional X-ray image collection

12. The insertion of any part of the human body through any port or aperture into the primary beam shall not be achievable without significant effort.

13. X-ray cabinet shall consist of the following components at a minimum

a. Adequate shielding as described above

b. Interlocks must be present on all access points of cabinet, a minimum of two safety interlocks are required at each door.

i. Interlocks at the doors or other entry points shall be such that the door opening results in a physical disconnection of the energy supply circuit to the high voltage generator and such disconnection shall not be dependent upon any moving part other than the door.

ii. X-rays shall not be initiated until all interlocks are engaged and shall cease if any interlock engagement is broken.

iii. Interlocks shall be present at all locations where the cabinet can be opened for sample loading (doors, windows, etc.)

iv. Interlocks shall also include “X-ray on” lights (or colored lights to warn users of X-ray production), keys, and can include computer commands as well.

c. Sliding or swinging door to allow for sample loading.

i. Can include a rolling window for sample loading as well.

ii. Window must be operated with buttons or options on the equipment controller if a rolling window is provided.

d. X-ray cooling system

i. Must include replacement coolant and instructions for replacing the coolant.

e. Micro-focus X-ray tube, 225 kVp

i. Focal spot size of 3 µm or less at up to 7W, 225 µm or less at 225W

ii. Open source tube

1. Tungsten filament must be able to be replaced by operators rather than specialty trained technicians.

2. X-ray tube must have unlimited life cycle.

iii. X-ray tube must include a 225 kVp multi-material target or a digital filter pack must be included to allow for the operator to inspect low density materials that are encased in a high density material. In both cases, a tungsten target must be offered.

0. For multi-material targets, 3 target options must be available and listed in the proposal. Target material option recommendations are molybdenum, tungsten, silver, and copper.

0. Target switching must be able to be performed by operators using conventional hand tools with minimal to no opening of the x-ray tube.

0. For digital filter packs included in the software, image or CT data set resolution and quality shall not be degraded by filter application in software.

f. Digital Detector Array (DDA) panel- amorphous silicon

i. Adequate shielding to protect the electronics

ii. Must have 2000*2000 active pixels

iii. Pixel size must be 200 µm

iv. Panel must be 16 bit

v. Maximum frame rate at 1x1 binning of 15 frames per second, at maximum frame rate at 2x2 binning 30 frames per second.

vi. At least 16x16 inch panel dimensions, 12-inch diameter cylindrical CT envelope.

vii. Must be compatible with equipment controller software.

viii. Panel shall be resistant to image burn-in, ghosting, or latent image persistence. An 8 hour CT scan of a sample shall not result in burn-in to the DDA/imaging train.

g. Mechanical manipulation system

i. Must be able to support up to a 50 kg (~110lbs) sample.

ii. Stage “tilt”

iii. Stage rotate

iv. Stage X-Y-Z direction

v. Manipulation system shall be controlled by the equipment controller

vi. Manipulator shall be capable of supporting a weight of not less than 50 lbs

vii. Axes travel must be at least:

1. 17” in X direction (front wall, window, to back wall)

2. 28.5” in Y direction (between detector and tube)

3. 13” in Z direction (floor to ceiling)

4. 30° in tilt (both positive and negative)

5. 360° in rotation

viii. Focal spot to imager distance (FID) to change the distance between the X-ray tube and DDA panel for increased intensity at lower X-ray energy.

h. Equipment controller (computer) with software capable of the following commands

i. Manipulation system control

1. Manipulation control speed

2. Coordinates

ii. X-ray settings

1. Voltage

2. Amperage

3. Shot timer

4. focal spot selection

5. X-ray tube warmup

iii. DDA panel settings

1. Collection rate (frames per second)

iv. Computed Tomography (CT) collection wizard

1. Projections and frames per projection

2. White balance

3. Center of rotation

4. volume of interest selection

5. reconstruction setting options

6. save and recall CT scan parameters for recurring CT scans

v. X-ray on/off toggle

vi. X-ray controller status (head type, hours and minutes on, demand power, vacuum, filament demand and actual, other information may be included).

vii. Zoom in/out

viii. Measurement feature

1. Calibration procedure must be included

ix. Annotation

1. Arrows, text, boxes, and X-ray conditions

x. Image color correction

1. Negate

2. Histogram

3. Filters

a. Pseudo-color may be an option

i. X-ray cabinet shall come with at least one monitor that interfaces with equipment controller. Although only one monitor is required, the mounting system for the monitor should allow a second monitor to be added.

j. Monitor shall be a 4k 32” flat screen monitor with the option to expand to a dual-monitor display.

14. CT collection must be capable of producing a CT scan of an item at least 12” diameter x12” length

a. This can be achieved through image stitching only if image stitching is a feature of the equipment controller software.

b. This can also be achieved via helical scan only if helical scanning is a feature of the equipment control software.

15. Equipment controller must include CT reconstruction software (if reconstruction software is separate from live view and CT collection software).

a. Data collected during CT shall be compatible with reconstruction software.

b. Reconstruction software shall include options to select center of rotation

c. Reconstruction software shall include beam hardening filters and noise reduction filters.

i. Must offer slice reconstruction throughout CT reconstruction to apply filters.

d. Reconstruction software shall allow user to select a volume of interest prior to reconstruction.

e. CT reconstruction must produce a file compatible with VG Studio Max 3.3.

i. .vol file

f. CT reconstruction software or a third software piece compatible with reconstruction software shall inform user of reconstruction status.

16. CT acquisition computer shall be a multi-core processor system of the desktop form factor capable of acquiring, storing, and displaying the acquired CT data sets. Minimum system requirements include:

a. 3.4 GHz processor

b. 32 GB of System RAM operating at the highest clock speed permitted by the system bus without overclocking

c. 5 TB of hard disk storage

d. 1TB Solid State Drive

e. NVIDIA Quadro graphics card capable to driving two monitors at 10-bit gray levels.

17. Training must be provided (4 days or 36 hours minimum) on equipment operation and software operation after installation.

a. Initial operator training / equipment familiarization may be separated from CT / VG Studio training if needed.

b. Initial operator training / equipment familiarization must be provided at the time of installation, CT / VG Studio training must be provided no later than six months after installation.

18. The X-ray cabinet system shall include a standard commercial warranty of at least 12 months after government acceptance. Any extended warranties will be evaluated by the government under the technical criteria in Section M, and will be treated as strongly advantageous.

19. X-ray cabinet preventative maintenance such as coolant changes must be able to be performed by NAWCWD Materials Engineering employees.

a. Preventative maintenance components such as chillers and roughing pumps must be accessible with conventional hand tools.

20. Any supplier personnel who come onsite for training, maintenance, or installation must be capable of gaining access to NAWCWD China Lake by passing a background check and being a US Citizen.

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