ASME PTC 39-2005 pdf download

ASME PTC 39-2005 pdf download.Steam Traps.
(Ii) Record air pressure P3 and temperature T3 on Form 8. Open the inlet valve V3, the outlet valve V4, and start the test timing device simultaneously. Adjust the pressure regulating valve (PRy), if required, to maintain P2 at the desired steam test pressure.
(I) Stop the test when T2 is 10°F (6 K) less than the closing point as defined by the capacity test procedure in para. 4-8, and record the test time interval, t, on Form 8.
(j) Repeat (b) through (I) as necessary to produce three sets of observations, which result in three calculated flow rates, none of which vary from the average by more than 10%.
4-9.6 In-Process Test
(a) Measure and record on Form 8 the volume (VAT) contained in the air accumulator and piping bounded by valves V3, V4, V5, and V6.
(b) Start with all valves in the closed position and activate electronic temperature indicating/recording devices, if used.
(c) Open valves V4, V7, and water valve V6 to cool the air accumulator to ambient temperature.
(d) Close the water valve, V6, and allow the air accumulator to drain. The air valve, V5, may be opened to facilitate draining and drying the air tank.
(c) Close valve V5 if used, and valves V4 and V7, and attach the test device.
(f) Open the vent valve, VI, and V3, and slowly adjust the steam pressure regulator, PRy, such that P1 is set at the desired test pressure. Verify temperature T1 is at saturation temperature corresponding to the test pressure, P1. and record P1 and T1 on Form 8.
NOTE: The vent valve can be throttled to a minimum flow to
maintain stable steam pressure and temperature conditions.
(ç) Close V3, open valve V5, and adjust the air accumulator pressure P3 to approximately 80% of the steam test pressure P1 using the air regulator (AR). Close valve V5.
(Ii) Open V2 to allow the steam piping and the test device to warm up, and verify the test device is operating properly and discharging condensate.
(I) Record the air pressure, P3, and temperature, T3, on Form 8. Simultaneously close valve V2, open valves V3 and V4, and start the test timing devices. Adjust the pressure regulating valve, PRV, as required to maintain P2 at the desired steam test pressure.
(j) Stop the test when T2 is 10°F (6 K) less than the air closing point as defined by the capacity test procedure in para. 4-8, and record the test time interval, t, on Form 8.
(k) Repeat (b) through (j) as necessary to produce three sets of observations, which result in three calculated flow rates, none of which vary from the average by more than 10%.
4-9.7 Air and Noncondensible Gas Handling Capacity
6-2.1 Part I: General Information
This part shall include the following items:
(a) date of test
(b) location of test facilities
(c) manufacturer’s name
(d) manufacturer’s serial number and complete identification of the steam trap
(e) inlet and outlet connections (stating size, pressure ratings, and type, such as threaded flanges, etc.)
(f) test conducted by
(ç) representatives of parties to the test
(Ii) object of test
(I) fluid at steam trap inlet (saturated steam, super- heated steam, wet steam, saturated water, subcooled water, air, etc.)
6-2.2 Part II: Summary of Results
This part shall include those quantities and characteristics which describe the performance of the steam trap at test conditions. The test report form for the particular test shall list the quantities, characteristics, and units of measurement required for the report.
6-2.3 Part III: Description of Steam Trap Tested
This part may include assembly drawings, manufacturing drawings, and measured dimensions if agreed to by the parties to the test. If no agreement is made, then it shall contain such descriptive information as may be furnished by the manufacturer or from his/her catalogs.
6-2.4 Part IV: Observed Data and Computed Results
This part shall include a record of data and calculations required to determine the results of the tests. The data shall have been corrected for instrument calibrations and conditions prevailing for each test run. The computation forms included in Section 5 shall be used for computing test results.
6-2.5 Part V: Test Methods and Procedures
This part shall include a detailed description of the instruments and apparatus used to measure the various quantities, and procedures for observing the characteristics of the steam trap during test.
6-2.6 Part VI: Supporting Data.