EMP STANDING ON 6' LADDER ATTEMPTING TO OPEN A 2"" BALL VALVE ABOVE HIS HEAD. WHILE PULLING ON VALVE HANDLE HE FELT A ""POP"" IN HIS RIGHT SHOULDER. THIS WAS CONSIDERED A TORN BICEP. HE SAW OUR PANEL ORTHOPEDIC WHO STATED HE WAS TO BE ON LIMITED DUTY FOR 1 MONTH.