Air Products Gasguard 250, Руководство по установке

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Appendix
Revision B: May 1997 Page A - 5
at least 17.5 Megohm-cm for diameters less than 3 inches and 17.0
megohm-cm for diameters greater than or equal to 3 inches.
6.5.4 The tube shall be blown dry with heated nitrogen gas
6.6
Fittings Cleaning
6.6.1
Final cleaning of fittings shall be performed under Class 100 environment.
6.6.2
Fittings shall be flushed with heated DI water ( 60oC) minimum.
6.6.3
Fittings shall be blown dry with heated nitrogen gas
6.7
Packaging
:
6.7.1 Tubing ends shall be sealed with polyethylene caps pressed over polyamide
nylon squares (1.75 mil) after being purged with nitrogen. Polyethylene bags
(6 mil) shall then be placed over each end and taped to the tube a minimum
of 3" from the end of the tube, using clean room tape. The entire tube shall
then be closed in a 6 mil polyethylene bag and heat sealed at both ends.
6.7.2
Fitting ends shall be packaged in a heat sealed nylon bag with a heat sealed
polyethylene bag over the nylon bag in a Class 100 environment.
6.7.3
Pack and ship to prevent damage to double bagging, tubing, and fittings.
6.7.4
Finished components shall be mill and heat traceable and permanently
marked for correspondence to the applicable mill test reports.
6.8 Inspection and Testing:
6.8.1 All tests and inspections required in this section shall be performed for each
order unless otherwise stated in the purchase order. The vendor shall
provide a detailed procedure for each test required in Sections 6.9.1.2 -
6.9.1.10 for APCI review and acceptance.
6.8.2
One hundred percent (100%) of components shall be visually inspected to
assure that interior surfaces exhibit no macroscopic pitting, staining, or
discoloration as can be detected with the unaided eye.
6.8.3
A statistically valid sample of tubes and fittings shall be measured with
calipers and/or micrometers or by other repeatable methods to verify
conformance to the critical dimensional requirements and monitor process
control. Critical dimensions will be identified in the purchase order.
Statistical procedures must be submitted to APCI for review and approval
prior to receipt of material.
6.8.4
All welded fittings shall be inboard helium leak tested to a 1 x 10-9 atm
cc/sec gaseous helium with a mass spectrometer leak detector.