N4008422T7004_QandA_Form.pdf
PDF 60 KB Posted
- Solicitation number
- N4008422T7004
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Other files
| File | Type | Posted |
|---|---|---|
| N4008422T7004_QandA_Form.pdf | ||
| SF30_Amend_0001_N4008422T7004.pdf | ||
| N4008422T7004_Site_Visit_Log_Attach3.pdf | ||
| SF1442_N4008422T7004.pdf |
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Text version
No. Date Specification Section or Drawing Reference Questions
1 2-Nov-21 SOW Page15 59. b. (1)
(1) Shall the hydrostatic test be conducted as per the U.S.
standard?
In case polyvinyl chloride pipes are used,
1. When conducted as per the U.S. standard, the water pressure causes the connecting part to be disconnected. (This doesn't happen for iron pipes)
2. Water pressure will not be maintained at a constant level.
(When conducted in accordance with the Japanese standard, above-mentioned issues don't occur.)
2 2-Nov-21 SOW Page15 59. b. (2) Shall the new domestic water piping be only disinfected or shall the entire piping be disinfected?
QUESTION & ANSWER FORM
FOR
N4008422T7004
Answers
As specified in para b.(1), the hydrostatic test for each piping system shall be preformed at not less than 7 kgf/sq.cm with no leakage or reduction in gauge pressure for 2 hours.
As specified in para 47, Lining Steel Pipes for Cold water should be JWWA K 132 Polyethylene powder lined steel pipes for water work.
The new domestic water piping shall be disinfected. It is therefore, the entity piping information has not been provided to the offerors.
File details come from the government source that posted it. Updated .