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We present a newly implemented single-pulse pipeline for the PALFA survey toefficiently identify single radio pulses from pulsars, Rotating RadioTransients (RRATs) and Fast Radio Bursts (FRBs). We have conducted asensitivity analysis of this new pipeline in which multiple single pulses witha wide range of parameters were injected into PALFA data sets and run throughthe pipeline. Based on the recovered pulses, we find that for pulse widths $\rm< 5\ ms$ the sensitivity of the PALFA pipeline is at most a factor of $\rm \sim2$ less sensitive to single pulses than our theoretical predictions. For pulsewidths $\rm > 10\ ms$, as the $\rm DM$ decreases, the degradation insensitivity gets worse and can increase up to a factor of $\rm \sim 4.5$. Usingthis pipeline, we have thus far discovered 7 pulsars and 2 RRATs and identified3 candidate RRATs and 1 candidate FRB. The confirmed pulsars and RRATs have DMsranging from 133 to 386 pc cm$^{-3}$ and flux densities ranging from 20 to 160mJy. The pulsar periods range from 0.4 to 2.1 s. We report on candidate FRB141113, which we argue is likely astrophysical and extragalactic, having $\rmDM \simeq 400\ pc~cm^{-3}$, which represents an excess over the Galacticmaximum along this line of sight of $\rm \sim$ 100 - 200 pc cm$^{-3}$. Weconsider implications for the FRB population and show via simulations that ifFRB 141113 is real and extragalactic, the slope $\alpha$ of the distribution ofintegral source counts as a function of flux density ($N (>S) \proptoS^{-\alpha}$) is $1.4 \pm 0.5$ (95% confidence range). However this conclusionis dependent on several assumptions that require verification.

PALFA Single-Pulse Pipeline: New Pulsars, Rotating Radio Transients and a Candidate Fast Radio Burst