DESICCANT MACHINE QUESTIONS AND ANSWERS.pdf
PDF 205 KB Posted
- Attached to
- DESICCANT MACHINE
- Solicitation number
- FA813226Q0043
About this file
This is a Questions and Answers document for solicitation P26-005 regarding a Desiccant Machine contract opportunity. The document addresses three key technical clarifications regarding pressure test specifications for the desiccant leak procedure.
The document clarifies that the specified pressure value of 27.7 ±0.3 inches H₂O should be interpreted as gauge pressure relative to ambient atmospheric pressure, not absolute pressure. For the Vacuum Test mode, this value represents a negative gauge pressure of approximately 27.7 inches H₂O below atmospheric pressure. For the Pressure Test mode, the same magnitude applies but as positive gauge pressure, meaning approximately 27.7 inches H₂O above atmospheric pressure. These clarifications establish consistent testing parameters for both vacuum and pressure evaluation modes of the desiccant machine.
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P26-005 Desiccant Machine Q&A’s
1. For both the Vacuum Test and Pressure Test modes, the solicitation specifies 27.7 ±0.3 inches H₂O.
Please confirm whether this value is expressed in gauge (relative to ambient) or absolute terms for each mode.
Based on the current desiccant leak procedure, the 27.7 ±0.3 inches H₂O value should be treated as a gauge pressure relative to ambient, not absolute pressure.
2. For the Vacuum Test mode, please confirm the intended sign of the pressure — i.e., is 27.7 in H₂O a negative gauge pressure (vacuum below atmospheric) or positive gauge pressure?
For the Vacuum Test mode, the value is intended to be a negative gauge pressure, meaning approximately 27.7 inches H2) below atmospheric pressure.
3. For the Pressure Test mode, please confirm whether the 27.7 ±0.3 in H₂O value is the same magnitude as the vacuum test but applied as positive gauge pressure, or whether a different value was intended.
For the Pressure Test mode, the value is the same magnitude, but applied as positive gauge pressure, meaning approximately 27.7 inches H2O above atmospheric pressure.
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