CHAPTER IV

          NUCLEAR EXPLOSIVE SAFETY STANDARDS AND GENERAL NUCLEAR
                         EXPLOSIVE SAFETY RULES


1.  GENERAL.  This Chapter establishes nuclear explosive safety standards
    and general nuclear explosive safety rules that apply to all DOE nuclear
    explosive operations.

2.  NUCLEAR EXPLOSIVE SAFETY STANDARDS.  All DOE nuclear explosive
    operations, including transportation, shall be evaluated against the
    following qualitative standards (in the context of this Order, the
    word, prevent, means to minimize the possibility; it does not mean
    absolute assurance against):

    a.  There shall be positive measures to prevent nuclear explosives
        involved in accidents or incidents from producing a nuclear yield.

    b.  There shall be positive measures to prevent deliberate prearming,
        arming, or firing of a nuclear explosive except when directed by
        competent authority.

    c.  There shall be positive measures to prevent the inadvertent
        prearming, arming, launching, firing, or releasing of a nuclear
        explosive in all normal and credible abnormal environments.

    d.  There shall be positive measures to ensure adequate security of
        nuclear explosives pursuant to the DOE safeguard and security
        requirements.

    e.  There shall be positive measures to prevent accidental, inadvertent,
        and deliberate unauthorized dispersal of plutonium to the
        environment.

3.  GENERAL NUCLEAR EXPLOSIVE SAFETY RULES.  The general nuclear explosive
    safety rules set forth in this paragraph are mandatory for all
    operations involving nuclear explosives in the custody of the DOE.  Any
    deviation from the following general nuclear explosive safety rules
    shall be approved by the Assistant Secretary for Defense Programs.

    a.  Nuclear explosive safety rules shall be consistent with the nuclear
        explosive safety standards listed in paragraph 2 above.

    b.  No operations involving nuclear explosives shall be performed until
        a Nuclear Explosive Safety Study or Survey is conducted, and a
        report is approved.  Study reports are approved by DP-20, and Survey
        reports are approved by the cognizant office Managers.

    c.  All operations involving nuclear explosives shall be conducted in
        accordance with cognizant DOE operations office approved nuclear
        explosive safety rules and safety procedures.

    d.  All operations involving nuclear explosives shall be performed in
        accordance with approved written procedures.  Reader worker
        routines and checkoff lists are to be utilized for operations
        involving nuclear explosive duties as determined by the cognizant
        Operations Office Manager.

    e.  The assembly or disassembly of nuclear explosives will be performed
        only at those locations authorized by the Assistant Secretary for
        Defense Programs.

    f.  Operations, to include transportation, involving a nuclear
        explosive test device not known to be one-point safe shall be
        conducted only at the Nevada Test Site.

    g.  Production plant operations shall not be started on a nuclear
        explosive until it is certified by the design agency to be
        one-point safe.

    h.  If it is determined that a nuclear explosive previously certified to
        be one-point safe no longer meets the one-point safety criteria, all
        production plant operations and offsite transportation will be
        immediately discontinued on that nuclear explosive.  Before
        production plant operations or offsite transportation can be resumed
        on that nuclear explosive, a Nuclear Explosive Safety Study shall be
        conducted and the study reviewed and approved by the DP-20 and the
        Assistant Secretary for Defense Programs.

    i.  Prior to the use of special tooling, test equipment, handling
        equipment, and transport equipment during nuclear explosive
        operations, there shall be a safety analysis performed on the
        equipment to assure that there is an adequate degree of safety
        inherent in their design and use.

4.  SUPPLEMENTAL NUCLEAR EXPLOSIVE SAFETY RULES.  Managers responsible for
    nuclear explosive operations shall assure that supplemental safety
    rules recommended by Nuclear Explosive Safety Studies or Surveys are
    fully considered and implemented, as required, to supplement the
    nuclear explosive safety standards and general nuclear explosive safety
    rules for specific operations with nuclear explosives; or to address
    specific characteristics of an individual design of a nuclear
    explosive, a specific test, or an operation.