Mod 2 burner

Mod 2 Burner. The design parameters for the burner are summarized in Table I. Although the burner was not intended to be a scale version of the G.E. CF6-50 combustor, analogous design parameters for... 

For testing, the Mod 2 burner is housed within a heavily walled pressure vessel which also serves as a plenum chamber for the preheated inlet air supply. See Ref. 16 for a description of the test facility. The burner assembly is shown schematically in Figure 2 and is designed to use 100% of the air flow in the combustion process. Thus, air film cooling and air dilution which are normally used in an engine combustor are omitted. In this way, combustion effects from air injection are avoided for the concept evaluation. The cylindrical combustion chamber is water cooled, as are the sonic exhaust nozzle and gas sample probe. 

The three overall configurations of the Mod 2 burner formed by combinations of the two mixing section and two flameholder versions mentioned above are sumamrized in Table II. 

Table II. Mod 2 Burner Variations Used for Cruise Power Experiments...

The ultralow target emission levels were simultaneously achieved under simulated cruise power conditions at a burning ER and with pressiure losses amenable to practical combustor design. These levels were achievable with the Mod 2 burner with hydrogen enrichment but not with jet fuel only because of the onset of lean blowout at too high an ER to reduce the NOj. emission suflBciently. 

When a safety function is aiiocated to a safety instrumented function, it wiii be necessary to consider whether the appiication is in demand or in continuous mode. The majority of appiications in the process sector operate in demand mode where demands are infrequent, in such cases, Tabie 3 in iEC 61511-1 ANSi/iSA-84.00.01-2004 Part 1 (iEC 61511-1 Mod) is the appropriate measure to use. There are some appiications where demands are frequent (for exampie, greater than one per year) and it is more appropriate to consider the application as continuous mode because the probability of dangerous failure will be primarily determined by the failure rate of the SIS. In such cases. Table 4 in IEC 61511-1 ANSI/ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) is the appropriate measure to apply. Continuous mode applications where failure would result in an immediate hazard are rare. Burner or turbine speed control may be continuous mode applications if protection systems are insufficient for all failure modes of the control system. 

Italy The key issues and tasks in nuclear R D in Italy are focused on the following areas (1) collaboration with General Electric on ALMR (optimization of safety parameters for a fast burner oxide core, studies with the aim of reaching the best burning capability of the PRISM MOD B oxide core, satisfying the safety criteria) (2) seismic isolation systems (guidelines development, seismic isolation tests, analytical studies), and (3) SPX reactor commissioning and service activities. 

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