Maximum Allowable Working Pressure (Mawp); Rated Discharge Pressure - GE H301 Series Operating Manual

54 | Chapter 5: Operation

Maximum Allowable Working Pressure (MAWP)

All HSR compressor cylinders have a Maximum Allowable Working Pressure
(MAWP). Refer to the cylinder's nameplate for the MAWP. The MAWP, hydrostatic
test pressure, is stamped into the cylinder nameplate of every cylinder. If the
cylinder nameplate is missing or illegible: use the manufacturing numbers die
stamped on the cylinder, to identify it. For replacement cylinder nameplates, see
CN 09-006.

Rated Discharge Pressure

The Rated Discharge Pressure (RDP), per API 11P and API-618, is calculated in one
of two ways depending on the MAWP:
• For MAWP between 0 and 275 psig, RDP = MAWP - 25 psig
• For MAWP exceeding 275 psig, RDP = MAWP / 1.1
The packager is responsible for providing pressure relief
valves for every compressor stage per the appropriate
H I G H P R E S S U R E
ENSURE ALL PRESSURE IS REMOVED.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145(f) (7)
D R O P / F A L L H A Z A R D
DO NOT STAND ON THE COMPRESSOR.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145(f) (7)
F L A M M A B L E
NO IGNITION SOURCE.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145(f) (5)
section of API Standard 618.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (9)