Section 154.2180 - Alternative testing program-Generally(a) As an alternative to complying with the vapor control system (VCS) analyzer and pressure sensor safety testing requirements provided by 33 CFR 154.2150(c) and 33 CFR 154.2250(c) , the facility person in charge may administer a reliability assurance test program in accordance with this section and 33 CFR 154.2181 .(b) As used in this section-(1)Calibration drift or CD means the difference in the analyzer output readings from the established reference value after a stated period of operation during which no unscheduled maintenance, repair, or adjustment took place;(2)Calibration error or CE means the difference between the gas concentration exhibited by the gas analyzer and the known concentration of the cylinder gas;(3)Response time or RT means the time interval between the start of a step change in the system input (e.g., change of calibration gas) and the time when the data recording system displays 95 percent of the final stable value; and(4)Sampling system bias or SSB means the difference between the gas concentrations indicated by the measurement system when a known cylinder gas is introduced at or near the sampling probe and when the same gas is introduced directly to the analyzer.(c) All analyzers used in a VCS must be tested for safety system functions, CE, CD, RT, and SSB, in accordance with 33 CFR 154.2181 .(d) All pressure sensors/switches used in a VCS must be tested for safety system functions, CE and CD, in accordance with 33 CFR 154.2181 .(e) The facility person in charge must ensure the following:(1) Calibration of instrumentation using standard procedures provided by the manufacturer or service provider;(2) Monitoring of all interlocks, alarms, and recording devices for proper operation while instrumentation is being calibrated;(3) Use of a certified gas standard that is within plus or minus two (2) percent of its certified concentration to calibrate the analyzers; and(4) Use of a certified secondary standard that is standardized against a primary standard to calibrate the pressure sensors/switches.(f) Upon failing any test under 33 CFR 154.2181 , the facility person in charge must ensure that all monthly and quarterly tests, including CE, CD, RT, and SSB, are conducted; and until all quarterly tests are completed, the person in charge must ensure that the vapor control alarms and automatic shutdown system are tested no more than 24 hours prior to any transfer or tank barge cleaning operation.(g) Analyzers required by 33 CFR 154.2105(a) and (j) and 154.2107(d) and (e) must be checked for calibration using a zero gas and a span gas.(h) The facility operator must maintain and make available upon the request of the Commandant and the certifying entity that certifies the VCS the following reliability assurance test program documents for two years: (2) The dates of all tests, type of tests made, and who conducted the tests;(3) Results of the tests, including the "as found" and "as left" conditions; and(4) A record of the date and time of repairs made.