Daily Start Up Chamber Checklist ProHeal
Routine chamber inspections are conducted to clarify proper chamber maintenance procedures and affect safe operation of all equipment.
Introduction
Decision Nodes
Pre-treatment Checklist
Check each box and initial where indicated once tasks are completed.
* indicates that a numeric value should be recorded.
Q: Mechanical AM Safety Checklist Inspect acrylic chamber for cracks, nicks, scratches, crazing, or discoloration. If found, complete Description of Window Blemishes form.;Inspect chamber for cleanliness. If necessary, clean according to Section 9 of Perry Operations and Maintenance Manual.;Inspect chamber door seal and sealing surface for dirt, material, cuts, nicks, or any obvious damage. Clean and lubricate seal, with unscented talc, or replace as necessary.;Inspect door cam bearing surfaces to ensure they are clean and lightly lubricated with Halocarbon grease. Clean and lubricate as necessary.;Inspect chamber door and door latch for ease of operation and positive latching. Keep latched for Pressure Test.;Inspect chamber electrical ground lead for integrity and tight connections. Tighten/repair as necessary.
Q: Problem
Q: Reported to
Q: Follow-up (placed in chamber log?)
Q: Signoff
Q: Communication Systems Check control knobs for security to shaft and ease of operation. Tighten if necessary.;Check for proper communication i.e., adequate volume and clarity. Adjust as necessary.
Q: Oxygen Supply Inspect chamber supply and exhaust hose for kinks, loose connections, or any evidence of damage. Repair or replace if necessary.;Inspect console control knobs and handles for security to shaft and ease of operation. Tighten if necessary.;Open O2 supply at the chamber (turn clockwise until parallel to supply line).;Ensure that system ON/OFF switch is in ON position.
Q: Airbreak Supply Inspect supply hose for kinks, loose connections, or evidence of damage. Repair or replace if necessary.;Open air supply at the air supply tank (turn knob counter clockwise ensure left gauge reads 80 psi).
Q: Instruments Inspect pressure gauges and flow meter for broken lenses or other obvious damage, including proper pointer position. Repair or replace if necessary.;Inspect both the green supply and red exhaust bypass indicators to ensure the lenses are in place and undamaged. Replace if necessary.
Q: Pressure Test (1) Set pressure to 2.4 psi; (2) Set rate to 5.0; (3) Ensure Vent Rate Control is 125 lpm (spin knob all way to right); (4) Observe for any leaks and shut down immediately if any signs; (5) Once ≈2.4 psi is achieved, set pressure to 1.0 ATA with normal ascent rate; (6) Set rate to 1.5 once 1.0 ATA achieved.
Q: Record primary O2 supply pressure (psi) at master valve *
Q: Record air break tank volume reading (psi). If volume on right gauge is reading 500 psi or below, order new tank.*
References