GS-38 脱脂客户标准.pdf

PRAXAIR STANDARD GS-38 ISSUE DATE 03/23/1964 REVISION DATE 09/03/2008 EFFECTIVE DATE 10/03/2008 WRITTEN BY F.J. Clay PRAXAIR, INC. REVISED BY J.B. Koch PRAXAIR TECHNOLOGY CENTER APPROVED BY Anand Samant TONAWANDA, NY 14151-0044 RELEASED BY A. Belair FOR USE ONLY IN CONJUNCTION WITH THE PROPOSAL, ORDER OR CONTRACT OF WHICH THIS IS A PART Page 1 of 26 PRAXAIR CLASS 2 (OXYGEN) CLEANING TABLE OF CONTENTS Section Page 1.0 Scope 2 2.0 Definitions 2 3.0 Required Cleanliness Level and Significance 2 4.0 Seller Cleaning Procedure Requirements 4 5.0 General Requirements 5 6.0 Safety 6 7.0 Sequence of Operations 7 8.0 Materials 7 9.0 Cleaning Methods 14 10.0 Inspection Methods 17 11.0 Advanced Inspection-Infrared Analysis 20 12.0 Packaging Methods 20 13.0 Identification Methods 22 14.0 Documentation 23 Appendix Aqueous Cleaners and Solvents 25 Praxair Standard GS-38 (Revised: 09/03/2008) FOR USE ONLY IN CONJUNCTION WITH THE PROPOSAL, ORDER OR CONTRACT OF WHICH THIS IS A PART Page 2 of 26 1.0 SCOPE This specification outlines the general requirements for cleaning, inspecting, and packaging items used by Praxair, Inc., for the production, storage, or distribution of liquid or gaseous oxygen, and, in some cases, other products such as nitrogen, argon, neon, krypton, ozone, or xenon. Requirements outlined herein are applicable to oxygen service components and systems (and other systems when specified) purchased from Sellers and assemblies fabricated and/or installed by field contractors, as well as to any modifications to such systems at the existing oxygen producing facilities; all as defined on the Purchase Order, Engineering Drawings, or Contract Specifications. Personnel at all levels involved in Praxair Class 2 (oxygen) cleaning shall clearly understand the requirements of this Standard. As used in the text of this Standard, “Shall” is used to denote that which is mandatory, “Should” is u