Potentia ntiall Failur ilure e Mod Mode Gas line leaks Gas line repair High gas pressure Low Low wate waterr le" le"el el 'e(ecti"e sa(et% "al"es 'e(ecti"e stea$ pressure gauges Scaling or corrosion in /oiler0s internal sur(aces#%passe& controls
Ta$pering Ta$pering with controls oor $aintenance *on&ensate tank e.plosion-
Potential Efect (s) o Failure Syste Plant Low Efect No Efect Low Efect No Efect Low Efect No Efect Stea$ s%ste$ trip Lower pro&uction Low Efect No Efect Low Efect No Efect
Se
#oil #oiler er shu shut& t&ow own n
Stea Stea$ $ s%st s%ste$ e$ tri trip p
ro& ro&uc ucti tion on sto stoop opin ing g
#oil #oiler er shu shut& t&ow own n
Stea Stea$ $ s%st s%ste$ e$ tri trip p
ro& ro&uc ucti tion on sto stoop opin ing g
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Asme7 Preamble
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FMEA FOR BOILER
Sheet Music
Process Step Function *heck 4al"e
*o$/ustion roo$
Potential Failure Mode Faile& to open Re$ain open *rack "al"e Incorrect /urner se+uence Too $uch (uel /eing 2re& Too $uch e.cess air Fault% 1a$ &etector *o$/ustion air "er% low 1ow *o$/ustion gas pass (ailure !"er $a.i$u$ per$issi/le working pressure Low water le"el
