Completed gas system, including pressure vessel shall be pneumatically tested in place using a remote (8 ft. distance, no line of sight to system) gas cyl., regulator, gauge and vent valve. This test will be done with pressure vessel set to a MAWP of 250 psig for initial use. Test as follows:
	1. Procure:
		a. Gas cylinder of clean Ar, N2, CO2, or dry air with supply pressure above 2000psig. 
		b. Calibrated test gauge or gauges for reading 313,  563, and 1875 psig to within 5% accuracy.
		c. Regulator(s) to provide above pressures in (b) to fit cyl. in (a).
		d. 10 ft. long high pressure clean gas service (e.g.McMaster P/N 5665K34 2-3 ea) or PTFE lined high pressure chemical hose (e.g McMaster P/N 5830k21  or sim), 2000 psig rated (min), and fittings to connect to gas system at H1, H3 Tees.
		e. Pressure relief valves set to 313, 563 and 1875 psi (on calibrated gauge), to fit exhaust ports of  250, 450 and 1500 psi relief valves. Alternatively, existing relief valves can be adjusted, if possible.
		f. test pressure release vent valve on T, connect to regulator outlet.
		g. Tees and plugs for installation on H1, H3, with appropriate MAWP.
	2. Install Tees and plugs above.
	3. Locate  remote gas cylinder/regulator/gauge around corner from experiment, out of line sight, and behind wall of cabinets. Survey for and remove any hazardous material (such as radioactive sources, flammable liquids, etc) from line of sight to test area. Have fire extinguishers on hand.	
	4. Install  313, 563 and 1875 psi relief valves into exhaust ports of 250, 450, and 1500 psi relief valves, respectively.
	5. Install hose end to H1 Tee. 
	6. Barricade test area to prevent personnel ingress, notify building manager of impending test.  Clear area of all people except for pressure test operator and witness(es).
	7. We start by testing 450psig MAWP subsystem as follows:
	8. Install test gauge for 563 psig pressure on test regulator.
	9. Open valves V4-V9. Close valves V3, V11, V12, V16, V17. 
	10. Back off test gas cyl. regulator knob fully. 
	11. Open test gas cyl. valve several turns. 
	12. Screw in test regulator slowly, in steps, watching to see that stable pressures are achieved, if leaks occur, back off pressure to 90 psig (20% MAWP) max. and inspect to find leak. Once found, back off regulator fully, open test vent valve to depressurize fully, and fix leak. If no leaks occur, continue increasing pressure until 563 psi reads on test gauge. Record pressures on system gauges. Hold for 5 minutes, then back off regulator, close test gas cyl. valve and release system pressure.
	13. Proceed to test main pressure vessel as follows:
	14. Open valves V11, V12, V13. Leave V4-V9 open. Close valves V10, V14, V15. Leave valves V3,     V16, V17 closed.
	15. Back off test gas cyl. regulator knob fully. 
	16. Open test gas cyl. valve several turns. 
	17. Screw in test regulator slowly, in steps, watching to see that stable pressures are achieved, if leaks occur, back off pressure to 50 psig (20% MAWP) max. and inspect to find leak. Once found, back off regulator fully, open test vent valve to depressurize fully, and fix leak. If no leaks occur, continue increasing pressure until 313 psi reads on test gauge. Hold for 5 minutes, then back off regulator, close test gas cyl. valve and release system pressure.
	18. Remove hose from H1, plug Tee port.
	19. Test 1500 psig MAWP  subsystem as follows:
	20. Change test gauge to 1875 psig gauge, if needed.  
	21. Install test hose end to H3 Tee.
	22. Open valve V14. Close valve V13. Leave V15 closed. Screw in R3 all the way.
	23. Back off test gas cyl. regulator knob fully. 
	24. Open test gas cyl. valve several turns. 
	25. Screw in test regulator slowly, in steps, watching to see that stable pressures are achieved, if leaks occur, back off pressure to 300 psig (20% MAWP) max. and inspect to find leak. Once found, back off regulator fully, open test vent valve to depressurize fully, and fix leak. If no leaks occur, continue increasing pressure until 1875 psi reads on test gauge. Hold for 5 minutes, then back off regulator, close test gas cyl. valve and release system pressure. 
	26. Remove hose from H3 Tee, plug Tee port.