MODIFICATION
65 -- WALK IN TEMPERATURE AND HUMIDITY TEST CHAMBER QUESTION AND ANSWERS
- Notice Date
- 7/6/2009
- Notice Type
- Modification/Amendment
- Contracting Office
- Department of the Army, U.S. Army Medical Research Acquisition Activity, U.S. Army Medical Research Acquisition Activity, US Army Medical Research Acquisition Activity, ATTN: MCMR-AAA, 820 Chandler Street, Frederick, MD 21702-5014
- ZIP Code
- 21702-5014
- Solicitation Number
- W81XWH-09-T-0340
- Response Due
- 7/10/2009
- Archive Date
- 9/8/2009
- Point of Contact
- bmiller, 301-619-1078<br />
- E-Mail Address
-
US Army Medical Research Acquisition Activity
(brian.d.miller1@us.army.mil)
- Small Business Set-Aside
- N/A
- Description
- BELOW ARE ALL THE QUESTIONS RECEIVED WITHIN THE STATED TIME FRAME WITH ANSWERS FOLLOWING: 1) The specs you sent for this RFQ make reference to some MIL STD testing. One is MIL STD 810F Method 503.4. This is a thermal shock test, and requires two chambers. Answer to 1: Thermal shock testing capability is not a requirement for this test chamber. Any reference to thermal shock testing is an error to be disregarded. 2) Solicitation calls for a panel room design, we feel that based on the size and performance requirements a solid construction (one piece) chamber featuring fully welded seams would be a much more robust design adding years of service. Would this be acceptable? Answer to 2: A one piece solid construction designed chamber is acceptable if it will fit through the garage door into the limited space of the building. The garage door is 10ft x 10ft; the floor space is 12ft x 60ft; ceiling height is sloping from 10 ft to 8 ft. The garage door is on the long side of the building (60ft). Unfortunately, this is a tight squeeze for a one piece chamber, but if it can be done in sections it may be feasible. 3) Specifications callout MIL-STD-810F, regarding 503.4, this is a thermal shock test which is defined in the specification as sudden changes in temperature of greater than 10C per minute. ALSO STATES The required apparatus consists of two chambers or cabinets, or a two celled chamber in which test conditions can be established. A chamber this size with 7.5 HP compressors cannot meet the 10C per minute rate. How will the chamber be applied or used to this specification? Answer to 3 is the same as answer 1. 4) Solicitation calls out for Rear Mounted Operational Equipment Module: shall be composed of the same insulating material as the chamber. In our view there is no reason to insulate a machinery section with 4 inch thick foamed in place urethane etc. We can provide a noise absorption insulation on the removable panels. Is this acceptable? Answer to 4: Yes 5) Same subject, module shall be designed to interface to a pre-fabricated hole in the rear wall of the chamber. We feel that based on MIL-STD-810F an interior plenum, housing the evaporators, heaters etc would be a better approach. The machinery section (compressors, humidifier etc) would be attached to the rear of the chamber. Is this an acceptable design? Answer to 5: yes 6) Load information - a) Live load? b) Static load? c) What are they putting in the chamber? d) How fast do they need the temperature to transition? Answer to 6: Assume: A live load of 2 KW; A static load of 100 lb Aluminum; A transition time of 90 minutes or less from 72 F to -40 F. Specific items to be tested are unknown (in general they are military medical devices).
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USA/USAMRAA/DAMD17/W81XWH-09-T-0340/listing.html)
- Place of Performance
- Address: US Army Medical Research Acquisition Activity ATTN: MCMR-AAA, 820 Chandler Street Frederick MD<br />
- Zip Code: 21702-5014<br />
- Zip Code: 21702-5014<br />
- Record
- SN01865835-W 20090708/090706235313-b32d3ba1950f44d382502a3f58d6ea49 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
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