Loren Data's SAM Daily™

FBO DAILY ISSUE OF AUGUST 28, 2009 FBO #2834
MODIFICATION

49 -- Paint Booth Systems

Notice Date

8/26/2009
 

Notice Type

Modification/Amendment
 

NAICS

423840 — Industrial Supplies Merchant Wholesalers
 

Contracting Office

Department of the Air Force, Air Force Materiel Command, Tinker OC-ALC - (Central Contracting), 3001 Staff Drive, Ste 1AG76A, Tinker AFB, Oklahoma, 73145-3015
 

ZIP Code

73145-3015
 

Solicitation Number

FA8125-09-Q-0263
 

Point of Contact

Joe R. Wilson, Phone: 405-739-3367, Leigh Ann Nunn, Phone: 405-739-4286
 

E-Mail Address

joe.r.wilson@tinker.af.mil, leigh.nunn@tinker.af.mil
(joe.r.wilson@tinker.af.mil, leigh.nunn@tinker.af.mil)
 

Small Business Set-Aside

Total Small Business
 

Description

Questions and Answer #4 We kindly request the following drawings: -A&E drawings -CW drawings -layout drawings for underground utilities & manhole covers Please look at the drawings already posted and see if they meet your needs. •1. We would like to get clarification on the design climate and operating conditions for this project. Section 3.1.5: •a) Base heating calculation on 40F outside air temperature. Design (99%) ASHRAE value for Ok City is 10F. This is refereeing to the air that will be pulled in not the system. The system itself will of course need to withstand much harsher elements. •b) Calling for 30-80%RH during painting operation, but do not specify painting temperature range. Effects CW requirement, need for reheat and volume of humidity addition. The paint will be preformed between 60 and 90 degrees Fahrenheit. We want to keep the temperature at least 5 degrees below the dew point. Is this the kind of information you need? •c) % glycol in CW needed? 0% glycol •d) Will you be able to provide suitable explosion venting, or do we need to go indirect? The contractor will be responsible for supplying venting and all other material need for the fabrication and installation. Section 3.2.5 •a) Specified the "conditioned make-up air/exhaust system shall be a dilution system." I don't know what this means. 100% fresh makeup air is what we need. •b) They do not specify any humidity control. Based on 75F design temperature, could be as high as 95% rh. We do not what rain in the scuff booth, the humidity needs to below the condensation point. Keep the humidity between 10% and 90% Section 3.11.4 •a) Specify 2 air flow settings based on position of light switch. 12,000 cfm when switch is on-6 air changes per hour when switch is off. I calculate 100 cfm will satisfy the 6 air changes. Will be difficult to find a unit with that turndown range. The system can do slightly more than 6 air changes per min for the "lights off" setting. If two fans in the duct meet fire code, which might be an option. The spec of at least 6 air changes comes straight from the OSHA regulations. Please clarify. •1. Lighting at 125 footcandles is nice but with 100 FPM in DD booth it will be hard to find adequate space for light fixtures given the amount of filter area required for 100 FPM and necessity for explosion relief panels. Mfg recommends a reduction in air flow closer to industry standards. Question is - if the air filters run from 0% to 75% blockage and we can run the same airflow speed, would this be acceptable? We are not willing to reduce the air flow. The air flow need to meet the specifications as written. •2. Are you willing to entertain energy conservation techniques? Energy conservation is important, but typically costly. You are welcome to add in and alternative with upgrade price, but I will not guaranty that we will chose to upgrade. The proposals will be judges technically acceptable or not based on the proposal not the alternatives. •3. Is the rest of the plant going to be air conditioned and maintained to what temperature at all times? The rest of the plant will be air conditioned will be air conditioned. Questions and Answer #5 Proposal Inquiry: #1 Section: 3.2.1 (Scuff Booth) states that the All ventilating & conditioned make-up air equipment for the booth shall be mounted on the top and/or sides of the booth (or be mezzanine mounted above the roofline) to conserve floor space. Section: 3.1.1 (Paint Booth) states that all ventilating & conditioned make-up air equipment for each paint booth shall be building roof mounted to conserve floor space. Question: can the Paint Booth AMU be mounted on top of the Paint Booth as is the Scuff Booth? •a) The make-up air units can be installed above the paint booth or above the roof. The units DO NOT sit on the roof. The units shall sit on a structural mezzanine supported by their own columns (NOT the building columns). •b) Either way, the intake air shall come from the outside and the exhaust shall be vented outside as well (in SOW). Proposal Inquiry: #2 Section: 3.2.1 (Scuff Booth) The contractor shall provide one (1) complete raised floor (surface treatment) scuff booth. Section 3.2.3 (Scuff Booth) The contractor shall install a pit no more than 6 to 8 inches with adequate, slope grades to one collection points. 2. Question: Is the intent of the specification for the Contractor to provide a pit the full length & width of the Scuff Booth with the grating flush with the Building finish floor or is it the intent to provide a perimeter trench 6" to 8" deep with raised grating? If the intent is to provide raised grating what is the elevation of the grating to be and how will the product be moved into the Booth? The intent was to specify that the entry of the booth needs to be flush with the surrounding floor, so the part will roll right in. Since there will be chemicals that we do not want free flowing from the booth or escaping the work area, a pit will be need to contain the water and sludge. This pit will be located below the work area, this serves as containment and the start of the drainage system. Proposal Inquiry: #3 Section: 3.1.2 (Paint Booth) states that the booth shall be powder coated (or equitant finish exterior with durable finish.) Section: 3.2.2 (scuff booth) states that the booth shall be powder coated exterior wall with durable finish. 3. Question: Can the booths be painted in field after erection? No, this area will have production and other operations in the general area during the construction of the booths. Touch up paint will be allowed if the MSDS is allowed. The contractor will need to submit MSDSs. I will then turn them over to our base environmental organization. There may be an issue with the paint the contractor wants to use, if so another paint may need to be selected. 4. Question: Can our proposal be emailed? Yes 5. Question: For bidding proposes can we assume that all utility connections for our equipment are within 25'? The contractor will supply to power requirements, and then the Government will run utilities within 25' of the equipment. 6. Question: I understand we need to provide permitting for the electrical, mechanical, and fire protection, however normally the customer provides the EPA permit. The air quality EPA permitting has been taken care of, if you refereeing to another type of EPA permitting I need further clarification. 7. Question: Are we to assume that this project is tax exempt? No, contractors are required pay state and federal taxes. FAR 52.229-3 Questions and Answer #6 •1. What finish process is desired for the concrete in the scuff booth? The chemicals are aggressive, what is the longevity requirement for the surface finish? The concrete surface finish needs to hold up to chemistry at least 6 months before subsequent finishes are applied. The chemistry is aggressive, but we do not what the chemistry breaking down the concrete or absorbing into the concrete. •2. We recommend using a coating on the interior steel walls in the scuff booth, raw steel will be a maintenance issue, the Scuff Booth process is damaging most finishes, what is recommended? The scuff booth needs to have a surface finish that will hold up to the operations in the booth (chemistry). The contractor shall coat the interior of the booth with a durable finish that will be a corrosion inhibitor. •3. There is nothing about connectivity for monitoring of the booth, is this an oversight or is DeviceNet® or something similar not needed? This is an oversight, we do require DeviceNet or equivalent, needs to be Underwriters Laboratories (UL) listed. •4. What type of PLC is the TAFB standard? To my knowledge there is not a standard. •5. The double wall vacuum tank is listed as steel, this is a good idea with this much vacuum, but steel is susceptible to corrosive effects of Alodine over time, is this tank expendable? What is the intended lifecycle of the tank? Stainless steel would be an obvious choice for longevity. The intent of the double wall vacuum tank was to provide spill containment for the tanks in a way that will not create obstacles, limit production access, limit maintenance access or take up a large foot print. If another method that will hold up to the chemistry is available the contractor is welcome to put this is the proposal. The tank should last at least 10 years. Please include the rational and/or data explaining why the proposed way is better. •6. There is nothing written about the effluent quality for the discharge water from Scuff, is the vendor to assume discharge quality is to meet OK standards for discharge of waste water? The solids (all paint chips, debris, etc.) and all oil must be removed before the water is sent down the drain. The water with the chemistry has been cleared for our waste treatment plant or equivalent by our local environment management office. •7. What is the wind load requirement at this location and will the govt require stamped engineering drawings for Oklahoma? This will be determined with the design once the contract is awarded; this information will not be needed unless the air handler is located on the roof. Questions and Answer #7 •1. What are the panic buttons for in the spray booth & scuff booth? The panic buttons are in case someone is trapped, to disable any lock mechanisms. •2. Whose responsible for providing the respirators on the breathing air system? If contractor is responsible, what type of respirator do you want? If government is responsible, what is the cfm rating per respirator? The respirators will be provided by the Government, since they must be fit tested and all. The air flow supply for each respirator shall be 6 cfm. •3. Can the air make-up units for the spray booth and scuff booth be mounted on a mezzanine next to the equipment? No. Above booth or above roof line (on a mezzanine) •4. Is there a single wand and pressure washer for the scuff booth? No there should be at least 2, with lines totaling 6 coming out of the pressure washer. Depending on the volume and capacity of the pressure washer more than 2 may be required. The volume of 3.8 gallon per minute (per line) will need to be achieved with all 6 valves opened in the booth. •5. Can the scuff booth be powder coated inside & outside with a clear film peel coat like the spray booth? Scope of work currently calls for exterior of scuff booth to be painted with a white peel coat inside. Yes, the scuff booth may be powder coated, like the paint booth, with a durable finish that will hold up to the chemistry. •6. Can the mix room be a cross draft or side-down draft instead of a downdraft due to spill containment area? The mixing room needs to be a down draft because the room will have tables and shelves for storing paint cans and work surfaces for mixing the paint, if another type of air flow was utilized the filters would be blocked by the equipment in the room. •7. What size paint cans will you use in the paint shaker? How many paint cans (1 or 2) to be shaken at a time? Gallon sized cans. The paint shakers need to be capable of shaking 2 cans at a time. •8. Can I use the same grating load of 250 psi in the scuff booth for the grating in the spray booth? Yes •9. Scope of work specifies an outside air temperature of 40 degree F. According to ASHRAE, the recommended design temperature is significantly less than 40 degree F. For 100% operation (to meet specs) in winter time do you want to use the recommended ASHRAE figures or stay with the 40 degree F.? Design the booth for 40F to 110F per SOW. This is refereeing to the air that will be pulled in not the system. The system itself will of course need to withstand much harsher elements. We need to stay with the 40 degree F of outside temperature for these booths. •10. Do I need to provide freeze protection for the chilled water coil if the outside air temperature is 32 degrees or lower? Or will maintenance drain the coil every winter? Does the chilled water have glycol added to it? No glycol in the system. Freeze protection shall be required for the chilled water coils. •11. Do you mean carbon dioxide monitor and not a carbon monoxide monitor on the breathing air system? Carbon monoxide monitor •12. When you state a stand alone breathing system with compressor, does this mean a separate breathing system per equipment or can I use (1) compressor to supply all equipment? A compressor can be used. •13. Clarification on utilities interconnection: The government will provide utilities within vicinity of equipment & contractor is responsible for final connection. Is this correct? Ye s Questions and Answer #8 •1. 40F minimum outside air indicated in statement of work. ASHRAE design condition for TAFB is 116F. Which value should be used for sizing equipment? This is refereeing to the air that will be pulled in not the system. The system itself will of course need to withstand much harsher elements. The design for these booths shall be for 40F to 110F per SOW. •2. Should heat recovery between the supply and exhaust airstreams be used to minimize energy cost & operating expense? Energy conservation is important, but typically costly. You are welcome to add in and alternative with upgrade price, but I will not guarantee that we will choose to upgrade. The proposals will be judges technically acceptable or not based on the proposal not the alternatives. •3. Paint booth humidity control is indicated to be between 30%-80%. Should the humidity level in the booth be able to be controlled to a specific value or just within this range? Within this range •4. What chilled water temperature should be used? Chilled water temp is 55F. •5. What exhaust discharge height should be used above the roof deck? The fire code calls out a minimum of 6 feet, so the stacks will be at least 6 feet tall. The actual height will be determined by the location within the proximity of the any air make up units. •6. Should a plume height be provided for the exhaust to prevent to entrainment into building outside air? Yes •7. Scuff Booth specifications require make-up air/exhaust to prevent entrainment into building outside air? 100% •8. Winter conditions will require humidification to maintain 30% RH minimum in booth. What source should be utilized for humidification? Building steam to clean generator, electric, gas fired, atomizing spray nozzle are some options. This will be determined within the design stage, to make this determination the government will have to review the proposals. •9. Overview indicated the ventilation & make-up air equipment is to be roof mounted. Can this equipment be installed on top of booths? The air make-up units shall be either mounted on a structural mezzanine above the roofline or shall be mounted on top of the booth.
 

Web Link

FBO.gov Permalink
(https://www.fbo.gov/spg/USAF/AFMC/OCALCCC/FA8125-09-Q-0263/listing.html)
 

Place of Performance

Address: Tinker AFB, Midwest City, Oklahoma, 73145, United States

Zip Code: 73145
 

Record

SN01926891-W 20090828/090826235948-4bcf8f008bd3433e283af0ead6c117a8 (fbodaily.com)
 

Source

FedBizOpps Link to This Notice
(may not be valid after Archive Date)

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