W912NW-23-Q-0050 0001 Final.pdf

ARMY CONTRACTING COMMAND - REDSTONE

TERRY B. CLARK (361)961-6489

CORPUS CHRISTI ARMY DEPOT

9035 OCEAN DR. BLDG 10, MAIL STOP 18

CORPUS CHRISTI TX 78419-5260

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of this amendment is to extend the request for quote due date from 2:00 PM Central Time, 13 July 2023 to 2:00 PM Central Time, 27 July 2023, to respond to questions and update the Statement of Work (SOW : see changes highlighted in yellow .)

All other Terms and Conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

1 55

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 11-Jul-2023

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912NW23Q0050

X 9B. DATED (SEE ITEM 11)

12-Jun-2023

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

11-Jul-2023

CODE

ARMY CONTRACTING COMMAND - REDSTONE

CONTRACTING OFFICE

CORPUS CHRISTI ARMY DEPOT

9035 OCEAN DR. BLDG 10, MAIL STOP 18

CORPUS CHRISTI TX 78419-5260

W912NW 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE W912NW

FACILITY CODECODE

EMAIL:TEL:

W912NW23Q0050

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:

QUESTIONS & ANSWERS

MEDIA BLAST

RFQ W912NW-23-Q-0050 Questions & Answers

Question 1. SOW paragraph 2.1.3.3. Shall include a dividing wall separating blast booth and cabinets from Dense Particle Separator, Dust Collector, and other supporting equipment in accordance with Drawing BLDG1700-3_VerA_Rev30. Please provide Drawing BLDG1700-3_VerA_latest revision.

Answer 1. To request access to drawings, submit an email to the following:

Terry Clark: terry.b.clark4.civ@army.mil and Dawyn Martinez: dawyn.m.martinez.civ@army.mil

Question 2. SOW paragraph 2.1.4.1. The Contractor shall provide convenience outlets distributed throughout the inside of the enclosure. Please provide advise specific quantity of outlets being requested.

Answer 2. Eight (8) outlets. One to service each blast booth, and two in the mechanical room, to be used with HEPA vacuums for housekeeping. SOW updated in section 2.1.4.1. The Contractor shall provide a minimum of eight (8) convenience outlets distributed throughout the inside of the enclosure. One shall be placed near each of the blast cabinets and two in the blast system mechanical room.

Question 3. SOW paragraph 3. 2.1.4.2. Lighting: The Contractor shall provide general overhead LED lighting that provides 100 foot-candles of light as measured at any point 36 inches above the floor within the enclosure and must uniformly illuminate the floor. The light fixtures shall be recessed to prevent dust build up. The fixtures and bulbs shall be easy to replace from inside the enclosure. On/off switches shall be located inside the enclosure at all personnel doors, excluding roll up doors. Please confirm the Govt. wants the light “fixtures” to be replaceable from inside the enclosure as this is a higher cost option. Typical light “fixtures” are replaceable from outside the enclosure while allow for the bulbs to be replaceable from inside the enclosure.

Answer 3. Bulbs to be changeable from inside. Fixtures may be accessible from the outside. SOW edited to reflect the correction in paragraph “2.1.4.2. Lighting: The Contractor shall provide general overhead LED lighting that provides 100 foot-candles of light as measured at any point 36 inches above the floor within the enclosure and must uniformly illuminate the floor. The light fixtures shall be recessed to prevent dust build up. Bulbs shall be easy to replace from inside the enclosure. On/off switches shall be located inside the enclosure at all personnel doors, excluding roll up doors.”

Question 4. SOW paragraph 2.1.5. HVAC, Filtration and Exhaust: The Enclosure shall have its own HVAC system and source of general filtration. For cost savings, the system shall use adaptive ventilation technology that changes flow based on use. The exhaust and make-up air will be supplied via 2 48”x48” roof penetrations on the building 1700.3 roof. Please confirm that the HVAC can supply air into the main building at the enclosure location, and then the enclosure air supply can be supplied from the building. This will improve management of the pressure gradient in the enclosure, ensure negative pressure within the enclosure, and simplify air management allowing for lower cost.

Answer 4. Makeup air is to be drawn from supplied roof penetration (SOW, 2.1.5, 2.1.5.1.4, 2.2.7.2).

Question 5. SOW paragraph 2.2.4.2. Specifications

• One 30” vibratory media classifier/separator to separate large waste and fines from media

• Rare-earth magnetic separator to remove ferrous particles

• Ionizer for static build-up

• Level Sensor for hopper overfill protection

• 12” fluidized bed utilizing aluminum oxide as media

Please confirm that the DPS system should be purposely designed for aerospace. Use of other industrial systems using materials, such as wood and canvas, are not acceptable for aerospace related processes.

Answer 5. Correct. SOW changed to reflect clarification. Added to specifications:

“Constructed using durable materials suitable for aerospace production environments, wood, canvas, and other similar materials not acceptable.”

Question 6. SOW paragraph 2.2.2.5. Blast Booth shall have provisions for hanging parts to be blasted, as well as a means to lift parts onto said hangers. What is the largest size/weight that an item will be hung for blasting?

Answer 6. Max weight approximately 150 lbs, Max Dimensions 72” x 30” x 20” (LxWxH). Average parts considerable lighter and smaller. SOW updated to reflect given dimensions: “2.2.2.5. Blast Booth shall have provisions for hanging parts to be blasted, as well as a means to lift parts weighing up to 150 lbs with maximum dimensions up to 72 inches onto said hangers.”

Question 7. SOW paragraph 2.2.3 Media Recovery System

Above grade full floor pneumatic media recovery system throughout Walk-In Media Blast room.

Floor load rating of 2000 lbss per ft2 or better.

Constructed of modular sections for future maintenance and cleaning Recovery rate controllable and variable per each section of floor.

Please clarify what is meant my “controllable”. ______ interprets “recovery rate” as the amount of “time” that a recovery tube is opened allowing recovery of the media? Is the intent of controllable to allow the time per tube to be adjustable by programming?

Answer 7. Yes. The ability to vary the recovery duration for areas of high media accumulation, adjustable via control PLC. Last bullet of 2.2.3 now reads, “Recovery rate variable per each section of floor and controllable via Control PLC.”

Question 8. SOW paragraph 2.2.5.1. All dust collection shall be of modular design utilizing common parts and pleated paper cartridge type HEPA filters.

8a. Please confirm that “modular” means that the dust collector number of cartridges can changed without refabrication of the existing dust collector body. Bolt together panels.

Answer 8a. Modular meaning standardized design made of interchangeable, reconfigurable parts. A custom-built dust collector requiring special hand-made filter cartridges is not desired.

Question 8b. Please confirm that all HEPA filters are to be installed on the negative size of the exhaust blower. In this configuration all air is filtered by HEPA before being exhausted to the clean side of the blower. In an event where a cartridge filter is damaged and dirty air is exhausted into the positive side of a blower there is a potential for dirty air to enter the building should an air leak develop in the ducting before reaching an aftermarket HEPA.

Answer 8b. Specific filter location and orientation is up to contractor. Dust collection should be designed to prevent contamination. SOW changed to reflect: SOW paragraph “2.2.5.1. All dust collection shall be of modular design utilizing common parts and easily changed pleated paper cartridge type HEPA filters and constructed to prevent contamination of surrounding area during maintenance or in case of failure.”

Question 8c. Does the Govt. prefer cartridge filters that are hung in a true vertical position with the ability for them to be bagged internal to the dust collector to limit migration of hazardous outside dust collector?

Answer 8c. Specific filter location and orientation is up to contractor. Dust collection should be designed to prevent contamination. SOW changed to reflect paragraph “2.2.5.1. All dust collection shall be of modular design utilizing common parts and easily changed pleated paper cartridge type HEPA filters and constructed to prevent contamination of surrounding area during maintenance or in case of failure.”

Question 9. SOW paragraph 2.2.6. Breathable air purification system with compressed air storage tank.

Please advise the minimum size requirement for the compressed air storage tank.

Answer 9. Tank may not be required by all breathable air systems. Requirement removed from SOW;

paragraph now reads:“2.2.6. Breathable air purification system. The Walk-In Media Blast Booth will include a means to produce and supply breathable air to the operators.”

Question 10. SOW paragraph 2.3.3. Media Blast Cabinet Specifications:

• Work compartment: 60” wide x 48” deep x 36” high Prevent use while working compartment doors are open.

• Clear and remove debris from around door seals prior to opening.

• Have two 43” x 30” compartment doors, one on either end of working compartment.

• Minimum view window: 16” high x 34”

• Minimum lighting: 300 foot-candles in the cabinet workspace

• Foot control

• Door interlocks to prevent blasting while doors are open

• Aeration: media fluidized bed

• Magnetic separator with cleanout port

• Moisture separator with manual drain

• Air pressure regulator

• Media valve with clean out port and quick dump feature

• Dust collector

• Blower motor: 10 HP minimum

• HEPA filtration system

• Tie into Enclosure’s ventilation system

• Magnehelic pressure differential gauge

• Self-cleaning work view window.

• Sound control: no greater than 76 dba of noise while blasting measured 3 ft from power pack.

• Adjustable height operator seat

• Be ergonomically adjustable for a large array of users.

• HEPA rated vacuum for cleaning and maintenance.

See highlighted items in yellow. Does the Govt desire independent dust collectors with each blast cabinet as suggested above? Or, is the desire to have the blast cabinets vent to the Blast Booth dust collector as suggested by bullet # 5 under section 2.2.5.4?

Answer 10. Centrally located dust collection is desired (SOW 2.2.5.4), redundant dust collector item removed from 2.3.3.

Question 11. SOW paragraph 2.3.4. HEPA vacuum:

• 120 VAC, 11.4 amps

• 2 HP motor

• 15 gallon capacity

• 263 mbar vacuum capacity

• 112 CFM capacity

• No greater than 47 LBS. empty

• Self‐closing vacuum port

• Screw on HEPA filter with pre‐filter o HEPA filter spares, 5 each o Pre‐filter spares, 5 each

• Carry handle on top of unit

• Stainless steel push/pull handle

• 2 front swivel casters, 2 rear fixed casters

• 15 foot clean up hose

• Minimum 30’ grounded power cord

• Set of general use cleaning attachments (extensions, scrubbers, etc.)

What is the minimum number of HEPA vacuums being requested?

Answer 11. Seven. They are represented in the layout drawing on the west wall of the mechanical room.

Question 12. SOW paragraph 3.4. Air System: The Contractor shall be responsible for the connection to the shop air system to a supply drop within 10 feet of the Media Blast System equipment on page P134 of Drawing “Powertrain Ph III Machining Dwgs Vol 2. The air system shall consist of the following: Please provide copy of Powertrain Ph III Machining Dwgs Vol 2.

Answer 12. To request access to drawings, submit an email to the following:

Terry Clark: terry.b.clark4.civ@army.mil and Dawyn Martinez: dawyn.m.martinez.civ@army.mil

Question 13. SOW paragraph 4.1.4. DPS Test Plan: The Contractor shall include the following test for the DPS system. The Contractor shall use a minimum of 250 pounds of new blast media and contaminate to 0.09%, by weight, of each of the following materials: 20-29 mesh sand, 30-39 mesh sand, 80-200 mesh sand, 10-12 mesh topsoil, 200 mesh topsoil, 16-18 mesh iron, 200 mesh iron, 28 mesh aluminum, 200 mesh aluminum. The Contractor shall process the thoroughly mixed media through the DPS system at a rate of 2400 pounds per hour. The tested material must not exceed the high-density particle contamination of 200 PPM. The Contractor shall provide the results and documentation that the system meets or exceeds this requirement in accordance with DI-NDTI-80566A Test Plan, CDRL A001. Please confirm that the Govt will supply 250 pounds of new blast media and contaminate to 0.09%, by weight, of each of the following materials: 20-29 mesh sand, 30-39 mesh sand, 80-200 mesh sand, 10-12 mesh topsoil, 200 mesh topsoil, 16-18 mesh iron, 200 mesh iron, 28 mesh aluminum, 200 mesh aluminum in support of the required testing?

Answer 13. Contractor shall supply test media and prescribed containments.

Question 14. SOW paragraph 6. Training: The Contractor shall provide on-site training for up to 6 personnel. Training shall address the following:

Enclosure Operation o Ventilation o Calibration o Preventative Maintenance o Trouble Shooting o Data Logging Equipment Operation o Stripping and Blasting Process o Cleaning o Preventative Maintenance o Trouble Shooting o Controls o Filter replacement procedures and safety protocols

HVAC controls and settings o Dust monitoring system:

o Theory of operations and overview o Hardware, software, UPS overview o Calibration procedures o Sensor location and replacement procedures o Data storage, reports, recall and interpretation o Indicators and alarm overviews Mechanical, electrical, plumbing drawing and equipment overview:

o Review of operator, maintenance, and calibration manuals o Troubleshooting procedures

What is the minimum time on site that training is to be conducted?

Classroom instruction – minimum amount of time?

Hands-on instruction – minimum amount of time?

Answer 14. No specific time requirement. Training should be lengthy enough to cover all topics listed to an audience that includes end use artisans, equipment maintenance personnel, and supervisors.

Question 15. Will the Govt. be considering vendor past performance for both Prime Contractor and ANY Sub-Contractors they utilize in its evaluation of award determination?

Answer 15. See FAR Clause 52.212-2, on page 16 of 96, Evaluation factor is based on Lowest Price of all CLINs combined.

Question 16a.SOW paragraph 2.1.5 HVAC, Filtration and Exhaust: The Enclosure shall have its own HVAC system and source of general filtration. For cost savings, the system shall use adaptive ventilation technology that changes flow based on use. The exhaust and make-up air will be supplied via 2 48”x48” roof penetrations on the building 1700.3 roof. Please advise the building 1700.3 roof load design? Optimal positioning of the AMU is on the building roof, so we wish to confirm there is sufficient design load to support the AMU.

Answer 16a. No equipment will be allowed on the roof of 1700.3. Acceptable locations for supporting equipment include on top of enclosure and directly to the west of the enclosure mechanical room as indicated in the drawing. See also updated SOW 3.14 which now reads, SOW paragraph“3.14.Exhaust Fans: All exhaust and make-up blowers and equipment shall be mounted within the building, not on the roof and adhere to all applicable regulations such as UFC 3-410-04 (Industrial Ventilation), OSHA 29 CFR 1910.94, (Ventilation), and OSHA 40 CFR 53.463 (Air Program) The capacity of the exhaust fans shall be rated for a smooth and balanced air flow from the machine exhaust to outside air. The Contractor shall provide calculations for each exhaust fan in the installed machines’ product drawings.”

Question16b. Please confirm it is acceptable to allow the AMU to feed air supply into the building and allow the enclosure to pull air from the building? Having the MAU feed air directly into the Enclosure creates design challenges for maintaining pressure gradient within the Enclosure creating a risk for the Enclosure to be under positive pressure. Having the Enclosure pull air from the building eliminates this risk. The AMU would still be tied to the Enclosure operations and only operate for replacement of the air volume being exhausted by the Enclosure.

Answer 16b. Makeup air is to be drawn from supplied roof penetration (SOW, 2.1.5, 2.1.5.1.4, 2.2.7.2).

Enclosure is to maintain a negative air pressure relative to the building. (SOW 2.2.7.3)

Question 17. SOW paragraph 2.1.6.6. The monitoring system will consist of at least 4 sensors in the general area of the enclosure and 1 inside the walk-in media blast booth and 2 in the dust collection mechanical room. It shall control the ventilation system, causing the system to operate efficiently. Please confirm the number of monitoring systems being requested is Qty 7?

Statement 1 -The equipment being considered for this requirement has one hazardous material analysis system per building sensor (i.e. probe). Each analysis system collects air from a single probe, analyzes the air sample, and directs the system ventilation based on the results of the single probe. Each analysis system does not allow for multiple probes. Therefore, in support of cost reduction we would recommend minimizing the number of probes (analysis systems) to only those necessary. It is suggested to have one probe in any area that has a high probability of generating hazardous dust under normal operations.

Answer 17. Number of sensors required by different systems may come into play. The quantity of sensors has been removed. SOW updated to: “2.1.6.6. The monitoring system will consist of enough sensors in the enclosure, the walk-in media blast booth and dust collection mechanical room to detect the presence of harmful levels of Cadmium and Chrome. It shall control the ventilation system, causing the system to operate efficiently.”

Question 18. Statement – The ability to expand the detection for other materials would require modification of the analysis system as opposed to changing of the “sensor heads” (i.e. probes). The system proposed will be capable of detecting Cadmium and Total Chrome.

Answer 18. SOW paragraph changed to clarify intent. Now reads: “2.1.6.2. Future capability to change the target monitored containments to detect beryllium, manganese, lead or thorium due to change in workload. The contractor shall only be required to provide capability for detecting cadmium and chromates for this contract.”

Question 19. SOW paragraph 2.2.2.5 - Parts to be lifted? If so size and weight of the biggest part? type of lifting device?

Answer 19. Max weight approximately 150 lbs, Max Dimensions 72” x 30” x 20” (LxWxH). Average parts considerable lighter and smaller. SOW Updated to reflect given dimensions: “2.2.2.5. Blast Booth shall have provisions for hanging parts to be blasted, as well as a means to lift parts weighing up to 150 lbs with maximum dimensions up to 72 inches onto said hangers.”

Question 20. SOW paragraph 3.7.1 – Is Government providing chilled water for make-up air for enclosure?

Answer 20. Yes. A 2” chilled water supply and return is in the area, should the project require more, the contractor can tap and route and supply and return line from the chilled water main at the southern end of the building in the mezzanine.

Question 21. SOW paragrap3.15 – Are there floor drainpipe located in the area of sink need to be drained in an industrial waste drain due to presence of hexavalent chrome?

Answer 21. Floor drains are required for emergency eye wash/safety showers and handwash sinks and are supplied by the building. All floor drains flow to industrial waste for water treatment and are independent of sanitary connections.

Question 22. What kind of media does the end user intend to use on Blast booth and all blast cabinets?

Answer 22. Plastic Media is currently intended for the blast booth and 5 of the blast cabinets. Currently the final cabinet is planned to use glass bead.

Note: In answering these questions, it was noticed that the PLC control system requirement was omitted from the original. Added back in via section 2.2.9 which reads:

SOW paragraph “2.2.9 Walk-In Media Blast booth shall be controlled via a PLC control system.

2.2.9.1. PLC control system shall consist of at least a 15” touchscreen control panel capable of controlling the following functions:

• Dust Collection Blower on and off

• Media Recovery system on and off

• Media recovery rate

• Blast media flow rate

• Emergency Stop/Panic Stop”

SECTION SF 1449 - CONTINUATION SHEET

SOLICITATION/CONTRACT FORM

The required response date/time has changed from 13-Jul-2023 02:00 PM to 27-Jul-2023 02:00 PM.

The following have been modified:

STATEMENT OF WORK

1. General

1.1. Objective: The Contractor shall manufacture, deliver, and install a turnkey Media Blast System, including Walk-In Media Blast Room, multiple Blast Cabinets, enclosure with dust control and hazardous material monitoring in Building 1700.3.

1.2. Corpus Christi Army Depot (CCAD) Mission: CCAD performs overhaul, repair, modification, retrofit, and modernization of aircraft systems and other systems as assigned; maintains a mobilization and training base to provide capability for mission support during any contingency; provides maintenance support services for special projects as assigned; exercises command control over assigned activities; and provides on-site technical assistance in the inspection, maintenance, and repair of customer aircraft, engines, and components.

1.3. Background: CCAD is currently having Building 1700.3 constructed via a military construction/Army authority project. This building is being built adjacent to Building 1700.2, which currently houses shops to assemble and test transmissions for various aircraft. Building 1700.3 will contain shops that directly support activities in Building 1700 such as: bearing shop, machine and grinding shops, workstation requirements kitting areas, non-destructive inspection shop, shot peen shop, paint prep and paint shop.

1.4. Completion Date: The Contractor shall deliver and install the Media Blast System within eighteen (18) months from contract award.

1.5. Occupancy Date: The targeted occupancy date is anticipated by September 2023. This date represents the day that non- construction personnel, to include Government and Contractor personnel, can enter the building and begin work related activities. CCAD does not have any control or authority on the occupancy date.

1.6. Building 1700.3 Utilities: CCAD anticipates that building utilities (air, water and electricity) will be provided when the building is released for occupancy. The event of extended power outages due to continued building construction efforts and upgrades, the Contractor shall be prepared to provide air and electricity to continue uninterrupted installation efforts. The Contractor shall not connect any power source to building facilities infrastructure for distribution under any circumstance.

1.7. Operational procedures:

1.7.1. Recognized federal holidays: the following is a list of federal holidays. The Contractor shall not deliver or conduct installation on these days or their federally recognized observance days unless required by the Contracting Officer’s Representative (COR) or the Contracting Officer (KO).

New Year’s Day Martin Luther King Jr’s Birthday President’s Day Memorial Day Juneteenth Independence Day Labor Day Columbus Day Veteran’s Day Thanksgiving Day Christmas Day

1.7.2. CCAD Closure: CCAD may schedule a shutdown period of approximately 40 working hours between Christmas Day and New Year’s Day holiday. CCAD may schedule a shutdown period at other times. The Contractor shall comply with administrative closing procedures for CCAD. Announcements of closures will be made through the KO and COR.

1.7.3. CCAD Core Hours: Core hours of operation at CCAD are Monday through Thursday from 0600 to 1600, and every Friday 0600 to 1500, except on United States holidays or when the Government facility/installation is closed due to local or national emergencies, administrative closings, or similar Government directed facility/installation closings.

1.7.4. Non-Personnel Services Statement: Contractor employees performing under this contract shall be controlled, directed, and supervised at all times by management personnel of the Contractor. Contractor employees shall perform their duties independent of, and without the supervision of, any Government official.

1.7.5. Location of Delivery and Installation: All items shall be delivered and install at Building 1700.3 on Naval Air Station Corpus Christi (NASCC). Corpus Christi, TX is located by the Gulf of Mexico in south Texas, approximately 210 miles southwest of Houston, 150 miles south of San Antonio, and 150 miles north of Mexico. CCAD is a 154-acre industrial complex located within the confines NASCC.

1.7.6. Trash And Debris Removal: The Contractor shall always keep the work area free of waste materials and rubbish accumulations. The Contractor shall leave the work area and premises in a clean, neat and organized condition and provide a dumpster for all metallic materials, shipping containers, or other materials generated during the equipment relocation and installation phase. The Contractor shall place dumpsters in an area designated by the Government.

1.7.7. Contractor Provided Equipment Requirements: The Contractor shall use only propane, electric, hydraulic or pneumatic equipment inside Government buildings. Gasoline driven equipment is not permitted inside any Government building under any circumstance. All forklifts shall have an on-board portable fire extinguisher. The Contractor shall be required to obtain all cutting and welding permits required by the NASCC Fire Protection Inspector: 361-961-3491/3492. The Contractor shall notify the Navy Fire Department to obtain necessary permits for each working day.

1.7.8. On And Off-Loading Equipment: The Contractor shall be responsible for offloading all equipment and tools in Building 1700.3.

1.7.8.1. The Contractor shall be responsible for preservation, packing, shipping, un-packing, on-site placement at CCAD and storage in accordance with the manufacturer’s commercial practices. The Contractor shall provide an on-site, fully authorized representative for all receipt of goods. The Government will not provide storage for shipped equipment and materials. The Contractor shall be responsible for the storage and handling of equipment and materials.

1.7.9. Travel Expenses: The Contractor shall be responsible for all travel expenses associated with this requirement.

1.7.10. Standards and Procedures: Applicable building, safety, construction, federal and process standards and procedures are listed in Appendix C: Standards and Regulations.

1.7.10.1. Approvals: Government approvals for any product, design, specification, or document does not negate the Contractor’s ultimate responsibility for meeting standards, codes, and regulatory agency requirements.

1.7.10.2. Standard By Reference: When a reference in this document is made to an industry specification, a manufacture, trade or trade association, an industry, or other generally recognized source, such are hereby made a part of the specification and shall have the same force and effect as though referenced in this document.

1.7.10.3. Competing Regulations: In the event of competing regulations and requirements for this installation, the strictest shall be enforced.

2. Equipment Specifications

2.1. Media Blast System Enclosure

2.1.1. System Design and Assembly: The Contractor shall design and install a prefabricated Five-Sided enclosure and include provisions for equipment that will be utilized in this area. The Enclosure shall include modular enclosure, air handling units, air monitoring system and safety systems. The Enclosure shall be anchored to the foundation. The design of the enclosure filtration and exhaust system, HVAC, electrical system and wall/ceiling structures shall consider that combustible dust is present in the enclosure.

2.1.2. Size and Layout: The Media Blast Enclosure shall have interior dimensions of approximately 27’W x 90’L x 16’ H. The internal space shall be divided into two sections, the primary section shall house blasting cabinets and booth and will be approximately 68’ long. The second section shall house the mechanical equipment including dust collector(s), particle separators, etc. and shall be approximately 22’ long.

2.1.2.1. The primary section shall have an area designated for donning and doffing of PPE as entry into the area.

Two emergency exit doors, one door leading to the mechanical room, and two parts roll-up doors shall provide access and egress.

2.1.2.2. The mechanical room shall have a door leading from the primary section, a large roll up door for equipment maintenance, and an emergency exit.

2.1.2.3. All doors shall have observation windows IAW 29 CFT 1910.94 (a)(3)(i)(d) and (e) and ANSI/AIHA/ASSE Z9.4 Sections 5.5 and 5.6.

2.1.3. Walls and Ceiling: The Contractor shall provide paneling that meets or exceeds the following:

2.1.3.1. Noise Control: The Contractor shall provide an acoustical treatment within the enclosure paneling. The thickness and efficiency of the treatment shall be such that noise measured from outside the enclosure, approximately 1 foot from wall, is less than 85 A-weighted decibels (dBA) when tested in accordance with OSHA 1910.95(a) at various points around the enclosure. The blast booth and media cabinets shall be required to be in full operation when a test is performed. If noise is measured at less than 85 dBA around the enclosure without treatment, the Contractor shall be required to provide treatment however at a minimal thickness and efficiency.

The material of the acoustical treatment shall not particulate or degrade over time.

2.1.3.2. Shall be maintenance free, free of wood or wooden like material, noncombustible, waterproof, and rated for industrial uses and applications.

2.1.3.3. Shall include a dividing wall separating blast booth and cabinets from Dense Particle Separator, Dust Collector, and other supporting equipment in accordance with Drawing BLDG1700-3_VerA_Rev30.

2.1.3.4. The enclosure roof shall be load rated for maintenance access, capable of bearing 4 people, corner to corner, include fall prevention via guardrails around the perimeter and allow personnel to enter roof via scissor lift.

2.1.3.5. Doors: The Contractor shall provide doors that are operable from both inside and outside. The doors shall be flanged and sealed to prevent dust migration to and from the enclosure when closed. Doors shall be located according to Drawing BLDG1700-3_VerA_Rev30 .

2.1.3.5.1. All doors shall have observation windows IAW 29 CFT 1910.94 (a)(3)(i)(d) and (e) and ANSI/AIHA/ASSE Z934 Sections 5.5 and 5.6.

2.1.3.5.2. Air Curtains: Shall be used at all doors with access to Building 1700.3. All roll up and personnel doors leading directly into the enclosure shall have an air curtain installed. The air curtains shall be installed such that they blow dust back into the enclosure, preventing dust from escaping.

2.1.3.5.3. Specifications

2.1.3.5.3.1. Personnel Doors:

5 Ea. 3’ W x 7’ H 2 Ea. 5’ 8” W x 7’H Double Door (one door for the dividing wall)

2.1.3.5.3.2. Equipment Doors

1 Ea. 12’ W x 10’ H Overhead Door (Centered End Wall) 2 Ea. 12’ W x 10’H Overhead Door (One Sidewall) 1 Ea. 12’ W x 10’H Overhead Door (Dividing Wall)

2.1.4. Electrical: The Contractor shall consider that combustible dust will be present in the enclosure and be classified as Class II-Division1-Group G, as established by the NFPA 70. The electrical system, to include electrical hardware for all areas within the enclosure, shall be designed and installed in accordance with this standard.

2.1.4.1. The Contractor shall provide a minimum of eight (8) convenience outlets distributed throughout the inside of the enclosure. One shall be placed near each of the blast cabinets and two in the blast system mechanical room. Installation and material requirements detailed in section 3.3 of this document.

2.1.4.2. Lighting: The Contractor shall provide general overhead LED lighting that provides 100 foot-candles of light as measured at any point 36 inches above the floor within the enclosure and must uniformly illuminate the floor. The light fixtures shall be recessed to prevent dust build up. Bulbs shall be easy to replace from inside the enclosure. On/off switches shall be located inside the enclosure at all personnel doors, excluding roll up doors.

2.1.5. HVAC, Filtration and Exhaust: The Enclosure shall have its own HVAC system and source of general filtration. For cost savings, the system shall use adaptive ventilation technology that changes flow based on use.

The exhaust and make-up air will be supplied via 2 48”x48” roof penetrations on the building 1700.3 roof.

2.1.5.1. Make-Up Air Handler: Shall provide the following heating and air conditioning requirements:

2.1.5.1.1. Set Temperature Range: Variable between 65° and 80° Fahrenheit, +/- 2°. Target temperature shall be adjustable and maintained throughout range.

2.1.5.1.2. Target chilled water is 46 degrees Fahrenheit at the chiller. Temperature may vary at the point of use. Contractor shall test chilled water temperature at point of use when sizing equipment.

2.1.5.1.3. Humidity: the system shall only be required to remove moisture from the air to achieve a relative humidity of 45%, with acceptable range between 40%-60% relative humidity.

2.1.5.1.4. Shall pull fresh, outside air through a roof penetration. The Contractor shall use the following formula to determine the baseline CFM the make-up air handler shall provide

1. Baseline Enclosure CFM = Volume of Enclosure × 24 Air Exchanges

Hour

1 Hour

60 Minutes

2.1.5.1.5. The make-up air handler shall provide the calculated baseline CFM rounded up to the nearest 1000. The volume of the enclosure shall only be determined by enclosure dimensions.

2.1.5.1.6. Recycling of air for comfort air in the enclosure nor breathing air is not permissible.

2.1.5.2. Enclosure Exhaust and Filtration:

2.1.5.2.1 All air exhausted shall be passed through HEPA filtration.

2.1.5.2.2. The enclosure air handler and exhaust fans shall maintain pressure differentials between the following areas:

2.1.5.2.2.1. The enclosure shall maintain a negative pressure relative to the outside of the enclosure. The Contractor shall provide indicators at appropriate areas.

2.1.5.2.2.2. The Walk-In Media Blast Booth shall maintain a negative pressure relative to the enclosure.

2.1.5.2.2.3. Pressure differentials shall be maintained with doors for the enclosure and walk-in media blast being opened intermittently.

2.1.5.2.2.4. The Monitoring System in section 2.1.6 will cause the air handlers to operate:

2.1.5.2.2.4.1. At a lower capacity when any sensor detects no or below acceptable levels of dust or chromium.

2.1.5.2.2.4.2. At a higher capacity when any sensor detects above acceptable levels of dust or chromium.

2.1.6. Monitoring. The enclosure shall have a continuous cadmium and chromate airborne dust monitoring system that will monitor enclosure ambient air in accordance with OSHA test method ID-204. The make-up air and exhaust controls from the enclosure shall be tied to the system and be automatically adjusted to maintain chromium below accepted exposure levels within the enclosure. The monitoring system shall have:

2.1.6.1. A sampling time of 5 minutes or shorter, with the sampling time being operator adjustable.

2.1.6.2. Future capability to change the target monitored containments to detect beryllium, manganese, lead or thorium due to change in workload. The contractor shall only be required to provide capability for detecting cadmium and chromates for this contract.

2.1.6.3. An Uninterruptable Power Supply (UPS)

2.1.6.4. Alarms indicating excessive levels of cadmium and chromates

2.1.6.5. Signal interpretation and data logging hardware and software

2.1.6.6. The monitoring system will consist of enough sensors in the enclosure, the walk-in media blast booth and dust collection mechanical room to detect the presence of harmful levels of Cadmium and Chrome. It shall control the ventilation system, causing the system to operate efficiently.

2.1.7. Fire Protection: ANSI/AIHA Z9.4-2011 states to design to ANSI/NFPA 654, ANSI NFPA 70 for combustible dust.

2.1.8. Deflagration Mitigation: Enclosure walls shall handle deflagration concerns with explosive vents with pressure activated latches leading from the mechanical room to the blast room.

2.2. Walk-in Media Blast Room: The Blast Booth System shall include the rotary selector, blast machine, dust collector, dense particle separator system, dust collection, breathable air purification system with storage tank, HVAC system, PLC control system.

2.2.1. Specifications:

2.2.1.1. Fully modular design with inside the booth dimensions being 10’W x 10’H x 12’L.

2.2.1.2. Walls shall be constructed of high strength rectangular tube sheathed with interlocking 12 gauge walls and 14 gauge ceiling. Walls shall be double skinned and treated for noise reduction.

2.2.1.3. Doors: The Blast Booth shall have one large double door for bringing work into the blast room, one single person door for operator access, and one single person door for emergency egress. All doors are to have observation windows IAW 29 CFT 1910.94 (a)(3)(i)(d) and (e) and ANSI/AIHA/ASSE Z934 Sections 5.5 and 5.6.

2.2.1.3.1. Doors shall use a double sealing method to prevent dust leakage.

2.2.1.3.2. Doors shall utilize safety interlocks and controls on both sides.

2.2.1.4. Personnel entrance and exit shall be via Air Shower.

2.2.1.4.1. Air shower shall meet or exceed NIOSH standards.

2.2.1.4.2. Inside dimensions shall be 4’ W x 3’6” L x 7’ H or better.

2.2.1.4.3. Contain operator controls inside of shower booth.

2.2.1.5. Floors: shall be skid-resistant

2.2.1.6. Lighting: Minimum 100 ft-candles at 36” from floor

2.2.1.7. 100 ft3 storage hopper, and 75ft3 clean media hopper

2.2.1.8. Low noise abrasive blast nozzles

2.2.2. Capabilities:

2.2.2.1. Continuously blasting media, of any type, on components.

2.2.2.2. Recovering/reclaiming spent media via an above grade, fully automatic floor system:

2.2.2.3. Spent media shall be conveyed to recovery/reclamation/dust collector system.

2.2.2.4. Supporting two blast operators simultaneously, each with individual hoses and nozzles and independent media flow control with a max rate of at least 1200 lbs/hr.

2.2.2.5. Blast Booth shall have provisions for hanging parts to be blasted, as well as a means to lift parts weighing up to 150 lbs with maximum dimensions up to 72 inches onto said hangers.

2.2.3 Media Recovery System

• Above grade full floor pneumatic media recovery system throughout Walk-In Media Blast room.

• Floor load rating of 2000 lbss per ft2 or better.

• Constructed of modular sections for future maintenance and cleaning

• Recovery rate variable per each section of floor and controllable via Control PLC.

2.2.4. Dense Particle Separator (DPS) system:

2.2.4.1. The blast booth system shall include a dense particle separator capable of separating waste from recovered media.

2.2.4.2. Specifications

• One 30” vibratory media classifier/separator to separate large waste and fines from media

• Rare-earth magnetic separator to remove ferrous particles

• Ionizer for static build-up

• Level Sensor for hopper overfill protection

• 12” fluidized bed utilizing aluminum oxide as media

• Constructed using durable materials suitable for aerospace production environments, wood, canvas, and other similar materials not acceptable.

2.2.5. Dust Collection System. The Walk-In Media Blast Booth will include a Dust Collection System IAW 20 CFR 1910.94.

2.2.5.1. All dust collection shall be of modular design utilizing common parts and easily changed pleated paper cartridge type HEPA filters and constructed to prevent contamination of surrounding area during maintenance or in case of failure.

2.2.5.2. Filtered air leaving the dust collection system will be vented outside via roof curbs provided in Building

1700.3. No recirculation of process air is to be permitted.

2.2.5.3. Dust collector will handle deflagration concerns with explosive vents with pressure activated latches on the housing and fast acting isolation flaps on the intakes with rapid acting sensor activated gate actuators.

2.2.5.4. Specifications:

15,000 CFM system rating Direct drive motor system Minimum of 20 NANO cartridge filters.

HEPA Filtration: removes 99.7% or better of particles larger than 0.3 microns Support both Blast Room and Blast Cabinets Future expandability for additional blast machines Means to measure filter loading Chemical hexavalent chromium eliminator

2.2.6. Breathable air purification system. The Walk-In Media Blast Booth will include a means to produce and supply breathable air to the operators.

2.2.6.1. Shall be capable of supporting two operators simultaneously.

2.2.6.2. Shall supply breathable air as defined by 29 CFR 1910.134 and ANSI/CGA G-7.1-1989 Grade D.

2.2.7. HVAC System:

2.2.7.1. HVAC System Shall provide conditioned make up air to support blast booth exhausting outside of building and enclosure exhaust.

2.2.7.2. Will use dedicated outside air supply.

2.2.7.3. Must maintain pressure cascade to ensure the enclosure is always negative to the building and blast booth is negative to enclosure

2.2.7.4. Exhaust through HEPA to outside of building

2.2.8. Electrical: for the purpose of the electrical system design and installation for the inside and outside of the blast booth, the contractor shall consider the combustible dust to be classified as Class II-Division1-Group G as established by the NFPA 70.

2.2.9 Walk-In Media Blast booth shall be controlled via a PLC control system.

2.2.9.1. PLC control system shall consist of at least a 15” touchscreen control panel capable of controlling the following functions:

Dust Collection Blower on and off Media Recovery system on and off Media recovery rate Blast media flow rate Emergency Stop/Panic Stop

2.3. Media Blast Cabinets

2.3.1. The contractor shall supply and install 6 glove-box type media blast cabinets. The contractor shall provide the following:.

2.3.1.1. Technical Manual. The Contractor shall provide manuals for all Blast Cabinets and installation components: HVAC, electrical, instrumentation, sensors, etc.

2.3.2. Media Blast Cabinet shall be capable of:

• Continuously blasting media, of any type, on components.

• Maintain 20 air changes of ventilation per minute in the working compartment, complying with ACGIH

Sec. 10.80.1 figure VS-80-2

• Recovering/reclaiming spent media conveyed to recovery/reclamation/dust collector system

• Tying exhaust air into Blast Enclosure exhaust system.

2.3.3. Media Blast Cabinet Specifications:

• Work compartment: 60” wide x 48” deep x 36” high Prevent use while working compartment doors are open.

• Clear and remove debris from around door seals prior to opening.

• Have two 43” x 30” compartment doors, one on either end of working compartment.

• Minimum view window: 16” high x 34”

• Minimum lighting: 300 foot-candles in the cabinet workspace

• Foot control

• Door interlocks to prevent blasting while doors are open

• Aeration: media fluidized bed

• Magnetic separator with cleanout port

• Moisture separator with manual drain

• Air pressure regulator

• Media valve with clean out port and quick dump feature

• Blower motor: 10 HP minimum

• HEPA filtration system

• Tie into Enclosure’s ventilation system

• Magnehelic pressure differential gauge

• Self-cleaning work view window.

• Sound control: no greater than 76 dba of noise while blasting measured 3 ft from power pack.

• Adjustable height operator seat

• Be ergonomically adjustable for a large array of users.

• HEPA rated vacuum for cleaning and maintenance.

2.3.4. HEPA vacuum:

• 120 VAC, 11.4 amps

• 2 HP motor

• 15 gallon capacity

• 263 mbar vacuum capacity

• 112 CFM capacity

• No greater than 47 LBS. empty

• Self-closing vacuum port

• Screw on HEPA filter with pre-filter o HEPA filter spares, 5 each o Pre-filter spares, 5 each

• Carry handle on top of unit

• Stainless steel push/pull handle

• 2 front swivel casters, 2 rear fixed casters

• 15 foot clean up hose

• Minimum 30’ grounded power cord

• Set of general use cleaning attachments (extensions, scrubbers, etc.)

2.4. Media Recovery System

• Above grade full floor pneumatic media recovery system throughout Walk-In Media Blast room.

• Floor load rating of 2000 pounds per ft2 or better.

• Constructed of modular sections for future maintenance and cleaning

• Recovery rate controllable and variable per each section of floor.

3. Installation

3.1 Dynamic Component Repair Facility (DCRF) Building 1700.3 Access: The Government will provide the Contractor with all necessary access to DCRF and its infrastructure to complete the efforts of this contract. The Contractor shall fill out necessary forms provided by the Government required for access to DCRF. The Contractor shall only use the north entry and exit points for all equipment movement. If the Contractor requires access to entry and exit points in Building for the purpose of moving equipment, the Contractor shall coordinate all moves through the building with the Government.

3.2 Drawings:

3.2.1 Building Architecture and Facility Drawings: The Government will provide drawings showing column locations, electrical taps and locations, water taps and locations, phone hubs and locations, IT cabinets and hub locations, compressed air taps and locations. These drawings are available to CCAD through a third-party contractor from a current MCA project. Preliminary drawings will be provided upon site visit; however, the as-built, final drawings of the building will not be available until a later date.

3.2.2. Concrete Slab Ratings and Drawings: The Government will provide drawings showing slab thickness and load capacities of the building floor. The load capacities of the slab dictate the paths for large material handling equipment with heavy loads. The Contractor shall observe and not exceed the load limits during transport of any material through the building. Equipment with large weights will have a designated location with the proper concrete slab rating.

3.2.3. Building Shop Floor Equipment Layout Drawing: The Government will provide the drawing set is showing all equipment that will be procured new and relocated from other buildings. This drawing set is generated and supported locally by CCAD. The Contractor shall use this file to maintain the ‘as-built’ drawings. The Contractor shall use this document to determine quantities of equipment to be procured if the quantity specifically is not stated in this document. A preliminary drawing will be provided upon site visit; however, the as-built, final drawing of the shop floor will not be available until a later date.

3.3. Electrical Service: The Contractor shall be responsible for installing all electrical equipment (transformers, conduit, Unistrut, wire, circuit breaker panels, disconnects, etc.) for a turn-key installation of equipment.

3.3.1. Extension Cords and Power Strips: The Contractor is not authorized to utilize extension cords or power strips to provide power to any equipment listed in this document.