API 6FA pdf free download
API 6FA pdf free download.Standard for Fire Test of Valves.
4 Fire Test
4.1 General
4.1.1 Procedures
The supplier/manufacturer shall develop procedures for conducting the fire test. These procedures shall be documented and included in the final report of the results. The procedures shall include pre- and post-test inspection activities and identify critical areas to be inspected. The supplier/manufacturer shall document all test parameters and results of the evaluations that demonstrate conformance to this document.
Fire testing shall be discontinued if the product or system fails to perform within the limits specified, except when such failure is determined to be the result of a failure within the test facility or test fixture and that failure and its correction do not affect the validity of the test results.
4.1.2 Personnel
A qualified person shall conduct preparation, testing, and approval of results.
4.1.3 Measuring and Monitoring Equipment
Measuring and monitoring equipment used during the testing process shall be calibrated in accordance with the requirements of the supplier/manufacturer or test facility. Measuring and monitoring equipment shall be used within its calibrated range.
All pressures are defined as gauge pressure unless otherwise specified and shall be recorded on time-based equipment.
Leakage rates shall be in milliliters per inch of nominal valve size per minute (milliliters per millimeter of nominal valve size per minute), averaged over the duration of the particular test period.
NOTE Records may be electronic or hardcopy.
4.1.5 Previous Fire tests
Fire testing that has been completed and documented in accordance with requirements of previous editions of
API 6FA and 6FD during their validity shall be acceptable in meeting the requirements of this standard.
4.2 Test Valve
4.2.1 General
The test valve shall conform to the applicable API product specification prior to the start of this fire test.
Except for check valves, the test valve shall include a port for the exclusive use of the relief valve (item 15 in Figure 1) to relieve the center cavity pressure to the atmosphere to protect against potential rupture of the valve.
For check valves, a bypass line shall be included (item 21 in Figure 1).
NOTE Any integral external pressure relief is in addition to the test port described above.
4.2.2 Symmetry Limitation
Valves with asymmetric seat or body sealing systems intended for bidirectional installation shall be qualified by testing in both directions.
NOTE The same valve may be refurbished and retested, or another, identical, valve may be tested in the other direction.
Asymmetric valves intended for single-direction installation shall be marked accordingly and shall be tested in the direction of recommended installation.
For valves with more than one closure member, if all seals and closure members are of the same design, testing of the pressurized side of the closure member in a single direction shall qualify all closure members in both directions.
4.2.3 Thermal Protection Limitation
Valves shall not be protected with insulation material or heat shield of any form during testing, except where such insulation/heat shield is part of the design.
4.2.4 Bolt Coating
Coating and thread compound elements that cause liquid metal embrittlement shall not be used.
NOTE Lead, tin, antimony, bismuth, cadmium are examples of elements known to cause liquid metal embrittlement.
4.3 Test Facility
4.3.1 General
The test facility shall be designed to permit the validation tests to be performed as detailed in Figure 1. The minimum requirements for the test facility shall be:
— pressure source (item 1)
— pressure regulator and relief with a pressure as determined by the valve manufacturer (item 2)
— water vessel and associated measuring device (item 3 and item 4),API 6FA pdf download.
