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VerificationNalida,
tion Design Document
Requirement
Number
Source
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Requirement Tezt
•Review
A • Analysis y
Reference
(When Is this requirement
T • Test I incorporated In the design)
1070 6.2 .2 Duct and Mousing Leak Tests:
Ducts and housings shall be pressurized to determine leak tightness, If the measured leakage is in excess of the acceptance Cmena, the ieaks
should be located by one of the rnetnods listed in pans. 6.5.4 or 6.5.5. A fter ! y aks a re repaired, the housing or duct shall be retested.
1071 63 Prerequisites:
Construction, modifications, and repairs affecting the lest bounda ry stall be complete and the inlet and discharge openings of the duct or housing
sealed before the lest is sta rted. All electrical, piping, and instrument connec tions shall be complete and all permanent seals installed before the
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APPARATUS rn... 1'Y
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STRUCTURAL'CAPABILITY TEST..';
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1072 6A.1.1 Test tan with Cow control,
1073 .4.1.2 Covers to seal test boundaries.
1074 6.4,1 .3 Clock or timer accurate to ''- 1.0 sec.
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1075
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6.4.1.4 Pressure Indlcad Cevice'accur to to +/-0.1 in w.
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1 076 6. 4 .2.1 Test fan with now Control.
1077 6.4.22 Flowmeter or totalt as volume meter accurate to . +-5h c' reading.
1076 .4,2.3 'em erature Indicating device accurate t N• 5 de grees F.
1079 6.4.2.4 Pressure imclicaling deice accurate to +/- 0 1 in w,
i060 6.4.2.5 Covers to seal test boundaries.
1081 1 6A.2.5 Clock ortmer accurate to +/- 1.0 sec.
1062 I 6.4.3 Bubble Method:
Bubble solution in a plastic squeeze-type laborato ry wash bottle (a commercial test solution or a so lution consisting of equal pa rts liquid
deter ent glycerin. and water).
1083 6.4,4 Audible Leak Method:
Suitable electronic sound detection a ut merit (optional).
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1084 6.5.1,1 Connect Vi e rest fan wile, now control to the housing and /or ductino.
1085 6.5.1.2 Install a pressure indicating O ev ice so that it will indicate the pressure Inside the duct and/or ho usjnq bei . tested. I
1066 6.5.1.3 Saal lest boundaries and dose acce6s openings In the normal manner.
1087 $.5.1.4 Start the fan and operate until the strut r { capability pressure is achieved Maintain pressire for the duration of the i inspection
1088 6.5 1.5 Inspect the pressure boundary for distortion or breach of integrity.
1089
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Releas pressure and Ins ect for erman,nt tlistortion
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1090 6.5.2.1 Connect the test fan with flow control to the housing and !of ducting.
the housing (downstream of the throtillng valve if used
Connect the Ctowmeler or lotallzing gas volume meter between the fan and
1091 6.5.2.2 Install temperature and pressure devices to incicaie representative temperature and pressure ins;de the duct andlor housing oeing tested.
032 6.5.2.3 Seal test boundaries and close access openings in the normal manner. Do not use tempora ry sealants, duct tape, or similar tempora ry mate ri als
except fors alln and !emporary b lankoffs.
1093 6.5.2.4 Start the fan and operate until the maximum o perating pressure is achieved, Maintain pressure constant with a flow cont ro l device until the
temperature remains on sla n t wilMn •/-0,5 decrees F for a minimum of 10 min.
1094 6.5.2,5 Measure the flow rate of the air being added to or removed from the duct/housing while maintaining the maximum operating p re ssure w.thin +i-
0.1 in, w.g. The now rate should be measu red oy one of the following methods.
a) For a flowmeter: record Cow readings once a minute for a 10 min continuou s_ pe riod and average the readin g s to calculate the measured
akage Cow rate.
b) For a totalizing gas volumemeter, measure the total volume of air for a 10 min continuous peroc anddivide the measured volume by time (10
ti9ri) to calculate the measured leaks a now rate.
1095 6.5.2.6 If the calculated leak rate exceeds the acceptance value, repo rt to the owner and locate the leaks in accordance with para. 5.5.4 and for para.
fi..5 R air and re'est as •e wired,
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