API 641 , تست نشتی ولو های پایپینگ

API STD 641 :Type Testing of Quarter-turn Valves for Fugitive Emissions

دانلود استاندارد API STD 641 (تست نشتی ولو های دستی )

فهرست استاندارد API 641 :

1 Scope
2 Normative References
3 Terms, Definitions, and Symbols .
3.1 Terms and Definitions
3.2 Symbols
4 Packing Pre-qualification
5 Valve Selection and Test Preparation
6 Safety Considerations for Type Testing
7 Type Testing
8 Acceptance Criteria
9 Leak Test Equipment and Calibration .
10 Valves Qualified
10.1 Original Test .
11 Valves Previously Qualified to this Standard
12 Valve Marking
Annex A (normative) Fugitive Emissions Test Report
Annex B (normative) Testing Profile
Annex C (Informative) High Temperature Testing Procedure
Figures
1 Valve Cycling
2 Calibration Setup
A.1 a Fugitive Emissions Test Report
A.1 b Fugitive Emissions Test Report
A.1 c Fugitive Emissions Test Report