Teledyne 2120XL - Trace Nitrogen Analyzer - Manual (Page 23)

Trace Nitrogen in Argon Analyzer Introduction
Teledyne Analytical Instruments 11
regulation. Read and understand the MSDSs for the process gases used
before operating this analyzer. More detailed information on the
precautions and safe practices to follow when handling cylinders can be
found in the CGA pamphlet P-1, Safe Handling of Compressed Gases in
Cylinders.
1.7.4.3 P URGING
CAUTION: EQUIPMENT DAMAGE MAY RESULT IF THE
ANALYTICAL CELL IN THIS UNIT IS EXPOSED TO
PRESSURE ABOVE ATMOSPHERIC PRESSURE.
THE CELL MAY BREAK OR SHATTER. TO PREVENT
THIS, ALWAYS KEEP THE VENT AT ATMOSPHERIC
PRESSURE.
DO NOT EXCEED 20 PSIG (138 KPA) AT THE
SAMPLE INLET.
DO NOT BLOCK THE VENT.
Follow applicable safety precautions to ensure that an oxygen-
deficient atmosphere is not created in the work area. Use low parts per
million (ppm) nitrogen in argon gas with proper regulation to avoid
contaminating the sampling system.
1.7.4.4 S AFE R EPAIR P ROCEDURES
Any repair work must be performed by a qualified service
technician. Use only factory-approved components for repair.
Analyzer manifold purging as well as subsequent repair work must
be performed by experienced personnel.
Ventilate working area to prevent any leaking supply gas from
accumulating. Vent all gases to the outside.
Vent all pressure relief valves out of enclosed areas. Piping must be
properly sized to allow safety devices to operate according to
specifications.
De-pressurize supply gas piping before working on it.
1.7.4.5 G ENERAL P RECAUTIONS FOR H ANDLING AND S TORING H IGH
P RESSURE G AS C YLINDERS
Compressed gases have properties that can cause serious accidents,
injuries, and even death if proper precautions and safety practices are