By Bernard Woodall

LOS ANGELES (Reuters) - A moderate earthquake spared Los Angeles oil refineries, pipelines, nuclear plants and the city's electrical grid on Tuesday, but caused some minor local power outages.

The biggest impact to energy flows came as Kinder Morgan shut a refined products pipeline for pressure testing, but a spokesman said there was no sign of any leaks or damage following the 5.4-magnitude quake.

"The good news at this point is that there is no indication of any damage," Kinder Morgan spokesman Larry Pierce said.

Southern California Edison reported an undetermined number of power outages in the area of Chino Hills, near the centre of the earthquake.

"The grid is in good shape," said Gregg Fishman of the California Independent System Operator. "There is no impact that we can see at this point."

Valero Energy Corp, Chevron, ConocoPhillips, Exxon Mobil, Tesoro and BP all said their refineries had not been damaged by the quake.

Cash refined products traders said the Los Angeles market had not reacted to the quake.

"Not a peep," said one trader. "It was too far from the refineries to have any impact."