(a) This subpart explains —   (1) The procedures that employees. separated employees, retirees, and survivors must follow in applying for benefits under FERS;   (2) The procedures that OPM will generally follow in determining eligibility for benefits under FERS;   (3) The appeal rights available to claimants adversely affected by OPM decisions under FERS; and   (4) The special rules for processing competing claimant cases under FERS.

(b) This subpart does not apply to processing —   (1) Forfeiture of annuity for conviction of certain criminal offenses relating to national security under subchapter II of chapter 83 of title 5, United States Code (processed under subpart K of part 831 of this chapter);   (2) Court orders affecting FERS benefits (processed under subpart I of this part); or   (3) Collection of debts due to the United States (processed under part 845 of this chapter).