RFP Question and Answer.xlsx
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- Attached to
- Energy Efficient Small Shelter System (EESSS) Federal contract opportunity
- Solicitation number
- FA8534-22-R-0002
About this file
This document contains questions and answers related to solicitation FA8534-22-R-0002 for the Energy Efficient Small Shelter System (EESSS) issued by the Department of the Air Force Materiel Command Lifecycle Management Center. Offerors must provide two EESSS units capable of housing 12 personnel each that maintain interior temperatures between +55°F and -25°F ambient conditions. The shelters must pass tests for wind loads up to 80 mph, rain intrusion rates of 4 in/hr, and energy efficiency standards while connected to external HVAC units. Proposals are due by April 25, 2022 and the contract will require delivery of non-recurring engineering, technical manuals, and production units that meet detailed performance specifications for environmental testing, size, weight and erectability.
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Sheet1
| EESSS RFP FA8534-22-R-0002 | |
| The government’s specification shall take precedence/priority over any questions/answers response in the event there is a conflict between the former and latter. | |
| Questions | Comments |
| A. Solicitation Document Questions | |
| 1. Page 3: Foreign Military Sales | |
| i. Are the Foreign military sales (FMS) referenced on Page 3 included in | All requirements should be considered included as part of the BEQ |
| the Government’s Best Estimated Quantity (BEQ)? | |
| ii. If not, would the FMS be in addition to the BEQ? | N/A |
| iii. What is the estimated dollar amount of FMS? | N/A |
| 2. Page 4: If Critical subcontractors will not be evaluated and an offeror uses | Offeror’s proposal will be evaluated as outlined in section L (Instructions, Conditions, and Notices to Offerors) and M (Evaluation Factors for Award) Proposal Requirements |
| subcontractors to supply both frames and covers, how will the Government | |
| evaluate the adequacy of the manufacturing processes? | |
| 3. Page 5: Please explain the meaning of “Ship in place”. | Final delivery destination of preproduction units will not be identified until conclusion of preproduction testing, OT&E and restoration. “Ship in place” is manufacturer’s facility. |
| 4. Page 12: E0004, Request for Deviation – | |
| i. When must a Request for Deviation be submitted? | After contract award |
| ii. Must a Request for Deviation be included in the offeror’s proposal or | After contract award |
| could a Request for Deviation be initiated after contract award? | After contract award |
| 5. Page 42: Waiver of 1st article approval for similar products – | |
| i. When must a waiver request be submitted? | After contract award |
| ii. Must a waiver request be included in the offeror’s proposal or could a | After contract award |
| waiver request be initiated after contract award? | |
| B. Statement of Work | |
| 1. 3.5.3, OT&E: Can this be waived? | 3.5.3 Operational Test and Evaluation (OT&E). After completion of first article testing and approval by the Government of the first article test report, all first article items shall be shipped to Holloman Air Force Base for OT&E. The contractor shall be responsible for all costs associated with shipping. Air Force operators and maintainers will conduct all OT&E. The contractor shall provide a spare parts kit with each item shipped for the OT&E containing all items required to conduct scheduled maintenance during the test as well as common repair parts predicted to be needed during the OT&E. Contractor support shall be available over email or telephone (within 48 hours of notification exclusive of weekends and official Government holidays) all times during the OT&E. If contractor support over email or telephone proves unresponsive or inadequate the contractor must provide personnel onsite at the OT&E test site to provide assistance. All OT&E shall be completed within 30 days. All tests shall be completed and the test reports approved prior to the first article acceptance. |
No, OT&E will not be waived. This is the opportunity for the proposed item to be vetted by the user community for evaluation and determine if any short falls in the design will prevent mission capability.
| 2. 3.6.3, Request for Variance | |
| i. Is this the same a request for deviation (E0004)? | 3.6.3 Request for Variance (RFV). The contractor shall prepare an RFV whenever a departure from the contractually-specified base line is proposed for a specific number of units or for a specific time. (DI SESS 80640C Request for Variance (RFV)) |
A Request for Deviation describes a proposed departure from (a nonconformance with) the contractually-specified configuration documentation for a specific number of units or for a specified period of time. A Request for Deviation enables the Government to determine the impact on performance, operational readiness, logistics support or other affected areas. All documents will be updated to reflect the change in wordage to “Request for Deviation” and reference to format and content, DI-CMAN-80640C.
| ii. When must a Request for Variance by submitted? Must a Request for | All RFDs are submitted after a Baseline index has been approved/accepted by the Government. |
| Variance be included in the offeror’s proposal or could a Request for | |
| Variance be initiated after contract award? | |
| C. Purchase Description | |
| 1. Page 3, Sand and Dust Testing (TOP 1-2-621) | |
| i. What is the wind speed and duration of the sand and duct testing requirement? | TOP 10-2-175 |
15 July 2010
4.9.4 Blowing Sand or Dust.
Conduct blowing sand and dust tests to determine if the test item can resist penetration of blowing sand or dust in accordance with TOP 01-2-621.
The primary objective of this test is to ensure test item performance is within system specification; i.e., successfully withstands the exposure to a sand and dust environment. Some systems specify particle concentration levels targeted to meet system deployment areas. Specific values for test parameters are identified in MIL-STD-810. A combined sand/dust test is acceptable.
ii. How much sand and dust must be used in the test? What is therequired minimum duration of the test? The test article shall be subjected to blowing sand conditions for a total of 360 minutes (90 minutes per side) at an air velocity of 18 m/s (40 mph), with the most vulnerable side of the test article exposed last.
(1) Blowing Sand. The sand concentration is 2.2 ± 0.5 g/m3 (0.06 ± 0.015 g/ft3).
(2) Blowing Dust. The dust concentration is 10.6 ± 7 g/m3 (0.3 ± 0.2 g/ft3) .
| 2. Par. 3.3.1, Useable floor space | ||
| i. Will the distance between the side walls and the end walls be | No specific procedures during the wind test require that any dimensional measurements be performed. However, the intent of the shelter is to provide adequate protection for occupancy during all environmental conditions. | |
| measured during the 80-mph wind test to confirm that the proposed | ||
| shelter provides a total minimum usable floor space of 600 square | ||
| feet? | ||
| ii. Our testing indicates that tents with external-frame designs have | See Previous Comment | |
| substantial unusable interior space even in modest 10-20 mph winds | ||
| due to displaced/flapping fabric. Will the distance between the side | ||
| walls and the end walls be measured during lower wind speeds as | ||
| well? | ||
| 3. Par. 3.3.2, Interior peak height | ||
| i. Will the interior peak height of the shelter be measured during the 80- | No specific procedures during the wind test require that any dimensional measurements be performed. However, the intent of the shelter is to provide adequate protection for occupancy during all environmental conditions. | |
| mph wind test to confirm that the proposed shelter meets the 8’ height | ||
| requirement? | ||
| ii. Our testing indicates that tents with external-frame designs create | See Previous Comment | |
| substantial interior deflection even in modest 10-20 mph winds. Will | ||
| the interior peak height be measured during lower wind speeds as | ||
| well? | ||
| 4. Par. 3.3.3, Width | ||
| i. Will the distance between the side walls be measured during the 80- | No specific procedures during the wind test require that any dimensional measurements be performed. However, the intent of the shelter is to provide adequate protection for occupancy during all environmental conditions. | |
| mph wind test to confirm that the proposed shelter does provide a | ||
| minimum of 18’ of space at the floor level? | ||
| ii. Our testing indicates that external-frame designs have substantial | See Previous Comment | |
| unusable interior space even in modest 10-20 mph winds due to | ||
| displaced/flapping fabric. Will the distance between the side walls be | ||
| measured during lower wind speeds as well? | ||
| 5. Par. 3.3.4, Shelter system sidewalls | ||
| i. Will the height of the sidewalls be measured during the 80-mph wind | No specific procedures during the wind test require that any dimensional measurements be performed. However, the intent of the shelter is to provide adequate protection for occupancy during all environmental conditions. | |
| test to confirm that the proposed shelter provides a 7’ side wall and | ||
| does not slope more than 16” from the base to the top of the sidewall? | ||
| 6. Par. 3.3.5, System weight | ||
| i. What is the maximum amount of weight that the “crew” is allowed to | ||
| lift and carry? | All components required to meet energy efficiency performance requirements shall be considered part of the shelter system. Individual shelter components shall not exceed crew size lifting limits as prescribed in Mil-STD-1472. |
MIL-STD-1472G
w/CHANGE 1
5.8.6.3 Lifting limits, push/pull.
5.8.6.3.1 Lifting limits. The weight limits in table XXXVIII show the maximum design weight limits for loads lifted, lowered, or carried while being grasped by two hands. These values were derived from performance capacity data from a young, healthy population and do not necessarily represent thresholds for injury risk.
a. Maximum values for one lifter. The weight limits in table XXXVIII shall be used as maximum values in determining the design weight of items requiring one person lifting with one or two hands.
b. Maximum values for two lifters. Double the weight limits in table XXXVIII shall be used as the maximum values in determining the design weight of items requiring two-person lifting, provided the load is uniformly distributed between the two lifters.
TABLE XXXVIII. Maximum design weight limits.
3.4.1 Erect time. The EESSS shall be fully erectable within 40 minutes with a maximum of six personnel. Erect Time is defined as the time it takes to set up the shelter system beginning with the system on the ground in its storage container and ending when it achieves Full Operational Capability (FOC). FOC is defined as the point in time when the shelter is completely set up, is providing shelter, and is meeting all of the minimum requirements set forth in this document.
The assumption could be made that the “crew” is comprised of a mix of male and female for design purposes.
| 7. Par. 3.5.1, Wind load | ||
| i. Will the noise level inside the shelter be measured during the wind | No specific procedures during the wind test require that any audio measurements be performed. However, the intent of the shelter is to provide adequate protection for occupancy during all environmental conditions. | |
| load test? | ||
| ii. If so, what is the maximum allowed amount of noise allowed as | ||
| measured in Dba? | N/A | |
| 8. Par. 3.5.2, Rain intrusion | ||
| i. How much rain as measured in inches per hour are required for this | ||
| test and what is the minimum wind speed required? | There are three sub-test required for rain intrusion compliance: Steady rain, driven rain, water spray. Each sub-test has its own rates and test procedures. |
3.5.2 Rain intrusion. The EESSS shall prevent water intrusion during exposure to steady rain, wind driven rain, and water spray testing in accordance with TOP 10-2-175.
TOP 10-2-175
15 July 2010
4.9.2.1 Steady Rain.
Determine the effects of steady rain as follows:
a. Erect the test item in accordance with the Operator’s TM.
b. Subject the test item to rainfall rate of 4 in/hr (10 cm/hr) for 30 minutes or as described in the Detailed Test Plan (DTP).
c. Inspect inside the test item for water intrusion. Record any water intrusion incurred and the probable point of entry. Intrusion (leakage) is defined as follows:
Negligible – damp spots, barely noticeable.
Minor – droplets forming on the fabric or at the seams, but not falling under ordinary circumstances in a way to impair the intended use of the shelter.
Major – water continually leaking and dropping off or running down the item’s inner surface in a way that impairs the intended military use.
4.9.2.2 Wind-Driven Rain.
Determine the effects of wind-driven rain on the test item as follows:
a. Erect the test item in accordance with the Operator’s TM. Position the wind machine as described in 4.9.1.1.
b. Subject the test item to rainfall rate of 5 cm (2 in.) per hour.
c. Apply winds at 88.5 km/hr (55 mph) for 30 minutes.
d. Subject the side of the test item being tested to three continuous wind gusts of 105 km/hr (65 mph) for 10 seconds during the 30 minutes.
e. Inspect the test item for leakage or damage. Inspect inside the test item for water intrusion. Record any water intrusion incurred and the probable point of entry.
f. Repeat steps b through e for the side 90° adjacent to the side tested in step c as applicable.
4.9.2.3 Water Spray.
Testing shall be conducted in accordance with MIL-STD-810, Procedure II. The purpose of this test is to determine if the test item can withstand water sprayed against the test surface without leaking or sustaining damage. The pressure of the water spray shall be determined from the requirements or at a minimum rate of 276 kPa (40 psi). A 276-kPa nozzle pressure should produce water droplets traveling at approximately 64 km/hr (40 mph).
Conduct the following as applicable:
a. Set up the test item in accordance with the Operator’s TM under the rain fixture.
b. Position the nozzles of the rain fixture 48 cm (19 in.) from the side to be tested.
c. Spray water onto the test surface and adjust pressure gauge such the water pressure is 276 kPa. Spray the test item for 40 minutes.
d. After the 40-minute spray period, inspect the interior of the test item for water intrusion.
e. Repeat steps b, c, and d for each successive side to be tested.
f. Estimate and record the volume of any infiltrated water and the probable point of entry.
g. Perform operational check if applicable.
h. Inspect the test item for the following if applicable and record any discrepancies:
(1) Physical damage.
(2) Permanent deformation.
(3) Delamination.
(4) Seal separation.
(5) Degraded operation.
(6) Photograph any damages.
MIL-STD-810H METHOD 506.6
506.6-4
2.3.2 Rainfall / Drip Rate.
a. Procedure I – Rain and Blowing Rain: The rainfall rate used in Procedure I may be tailored to the anticipated deployment locale and duration. Although various rainfall intensities have been measured in areas of heavy rainfall, recommend a minimum rate of 1.7 mm/min (4 in/hr) since it is not an uncommon occurrence, and would provide a reasonable degree of confidence in the materiel. MIL-HDBK-310 (paragraph 6.1, reference a) contains further information. During the pretest set-up, rain fall measurements should be taken at a minimum of 5 random locations. The average of these rain rate measurements should be within 10% or +/- 0.1 mm/min (0.25 in/hr) of the specified value, whichever is less. To ensure a uniform distribution of simulated rain on the test item each measurement should be within 25% or +/- 0.2 mm/min (0.5 in/hr) of the specified rain rate whichever is less.
b. Procedure II - Exaggerated: This procedure uses (as a guideline) a 276 kPa (40 psig) nozzle pressure with a flow rate of 20.8 L/min (5.5 gal/min) that should produce water droplets traveling at approximately 64 km/h (40 mph) when using a nozzle such as specified in paragraph 4.1.2.
c. Procedure III - Drip: The drip test has a requirement for a volume of water greater than 280 L/m2/hr (7 gal/ft2/hr) dripping through a pre-determined hole pattern. An alternative requirement is for items exposed only to 140 L/m2/hr (3.5 gal/ ft2/hr): Appropriately reduce the drip rate as long as the duration of the test is extended to 30 minutes to ensure the equivalent volume of water falls on the test item.
| 9. Par. 3.6.4, Energy efficiency | |
| i. Why is the Government willing to work and sleep in a shelter that is | The Government only indicates a range of temperatures for which the shelter must operate. There is no indication of temperature ranges at which sleep or work will be conducted. |
| only required to provide an internal temperature of +55º when the | |
| ambient temperature is -25ºF? | |
| 10. Par. 4.6.6.3.2, High temperature test | |
| i. How much fresh air will be provided by the Government supplied 5- | There should be no “fresh” air introduced into the HVAC air circulation loop. The ECU will use return air from the shelters to be conditioned and supplied back to the shelters. The rate of exchange can be calculated from the air flow rate of the ECU and total volume of air in the shelters. |
| ton ECU to the two EESSS’ as measured in air exchanges per hour? | |
| ii. Why doesn’t the Government require the contractor to erect and strike | The AF has no requirement to strike/erect shelters in extremely high temperature conditions. No specific procedures during the energy efficiency test require the shelter to be struck/erected in high temperature conditions. However, the intent of the shelter is to provide adequate protection for occupancy during all environmental conditions. |
| the EESSS during the high temperature test to confirm the erect time | |
| in par. 3.4.1 and the strike time in par. 3.4.2? | |
| 11. Par. 4.6.6.3.3, Low temperature test | |
| i. How much fresh air will be provided by the Government supplied | 4.6.6.3.2 High temperature test. Both EESSSs shall be connected to one 60K BTU/h ECU providing 2,000 standard cubic feet per minute (SCFM) against 1.0 inch water gauge (WG) pressure subjected to the solar radiation test conditions in accordance with MIL-STD-810, Method 505.7, Procedure 1. For the purpose of this test, the shelters shall be exposed to the solar radiation and temperature conditions of only hours 13 through 17 of the A1 diurnal cycle as defined in Table 1 of MIL-HDBK-310. Prior to testing, the climactic chamber shall be brought to a steady state at the temperature specified in hour 13. After the EESSS internal temperature equals the ambient climactic chamber temperature (+/- 3 °F), the ECU shall then be turned on and set to its maximum output. Once the temperature differential between the interior temperature and ambient temperature reaches the level required in 3.6.4, the test shall be started. The EESSS shall, throughout the test, maintain a temperature differential of not less than that required by 3.6.4. This test shall be conducted once with the shelters in side by side configuration, and once with the shelters connected in end to end configuration with the center wall removed (see Figure 1). In order to satisfy the requirements of 3.6.4, EESSS shall pass this test in both configurations. |
There should be no “fresh” air introduced into the HVAC air circulation loop. The 130K heater will use return air from the shelters to be conditioned and supplied back to the shelters. The rate of exchange can be calculated from the air flow rate of the 130K heater and total volume of air in the shelters.
| 130K BTU fuel fired heater to the two EESSS’ as measured in air | ||
| exchanges per hour? | ||
| ii. Why doesn’t the Government require the contractor to erect and strike | The AF has no requirement to strike/erect shelters in extremely low temperature conditions. No specific procedures during the energy efficiency test require the shelter to be struck/erected in low temperature conditions. However, the intent of the shelter is to provide adequate protection for occupancy during all environmental conditions. | |
| the EESSS during the low temperature test to confirm the erect time in | ||
| par. 3.4.1 and the strike time in par. 3.4.2? | ||
| 12. Figure 1, page 29 | ||
| i. What is the length of the 4 insulated ducts connected between the ECU | The test will use 9ft. 16” ducting for the high temperature efficiency test. The ducting will be compressed as much as allowed to shorten the distance. The ducting will be insulated to prevent as much thermal loss as possible. | |
| and the two EESSS as shown in this figure? | ||
| 13. Par. 6.1, Intended use | ||
| i. On average, how many persons will be sleeping and working in 1 | ||
| EESSS? | Occupancy of the shelters is mission dependent. No known numbers of person will be sleeping or working in the EESSS. | |
| ii. What brand of ECU will be used for environmental testing and | ||
| operation? | The brand of ECU for the environmental testing and operation is irrelevant to the test. The ECU will be a verified 60K BTU/hr (2,000 scfm) test fixture provided to conduct the energy efficiency high temperature test. | |
| iii. How many maximum cubic feet per minute of fresh air does that ECU | The ECU used for the energy efficiency high temperature test will not be allowed to introduce any “fresh” air into the air stream of exchanged return air from the shelter. | |
| provide? | ||
| D. General | ||
| 1. Given the complexity of the requirement, will the Government extend the | At this time, the deadline for submission of proposals has been extended to April 25, 2022 at 3:30pm EST. | |
| deadline for submission of proposals by 30 days to allow adequate proposal | ||
| preparation time after questions are answered? |
| In the RFP, Item No. 0005 is for Tech Manual Contract Requirement (TMCR) and Item No. 0009 is for Technical Manuals. It is our understanding that Item No. 0005 is for the development and delivery of the Technical Manual for the EESSS. If this is true, what are the Technical Manuals required by Item No. 0009? | Refer to EESSS RFP Amendment 0002, Line Item 0009 has been deleted. |
| Item No. 0005 cites Data Exhibit D001 Tech Manual Contract Requirement, but D001 is not included in the CDRL DD1423 Portfolio file containing all of the Data Exhibits. There is a Technical Manual Contract Requirement Document included with the CDRL DD1423 Portfolio, but it doesn't include a TMCR document that typically details the Tech Manual deliverables and timetable for deliverables. Is there one available? I have attached an example of one from a different solicitation as an example. | Refer to EESSS RFP Amendment 0002, TMCR for Data Exhibit 0009 has been incoproated into the CDRL Portfolio Attachment. |
| Item 1005 is for Non-Recurring Engineering (NRE). This line is only included in Option I. What is considered non-recurring engineering and why is it only in Option 1? It is not discussed anywhere in the RFP or SOW. | For definition it is recommended that all “Google” Non-Recurring Engineering Costs for the standard commercial definition (the non-recurring engineering cost include tooling and programming costs that happen before your unique product is actually put into mass scale production, if applicable). |
| The government’s specification shall take precedence/priority over any questions/answers response in the event there is a conflict between the former and latter. |
Microsoft_Word_Document.docx
Handling Function
Population
Male and female
Male only
Lift an object from the floor and place it on a surface equal to or greater than 152 cm (5.0 ft) above the floor
14 kg (31 lb)
21.9 kg (48 lb)
Lift an object from the floor and place it on a surface not greater than 152 cm (5.0 ft) above the floor
16.8 kg (37 lb)
25.4 kg (56 lb)
Lift an object from the floor and place it on a surface not greater than 91 cm (3.0 ft) above the floor
20 kg (44 lb)
39.5 kg (87 lb)
Carry an object 10 m (33 ft) or less
19 kg (42 lb)
37.2 kg (82 lb) image1.emf
File details come from the government source that posted it. Updated .