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Finding Aids

Epidemiologic Studies

Rocky Flats Plant Site

Production and Materials Handling

Criticality Recommendations, 1957-1970

Location:

Active:
Inactive: RF-881 Archives, Room 214
Access Restrictions: Records are classified as Secret/RD; 881 Archives is a security- controlled area.

 Volume: 2.6 cu. ft.

Accession or Other ID Number: A120, B306, D142, D211, G167, H312

 Condition: Good to Fair
Container Number: A120, B306, D142, D211, G167, H312

 Medium: Paper
Scanning Suitability: Series contains bound volumes, handwritten data, floor plans, and drawings.

 Duplication: Records in Accession Number H312 are available on microfilm in the 881 Archives under MF-RF-PHPR, Reel 3.

Arrangement: Varies; chronological or numerical by calculation or building number

Originating Office: Nuclear Materials Accounting Organization of Rockwell International and EG&G

Finding Aids: Records Storage Receipt

Disposition Authority: Records schedule under revision

Series Description: This series consists of guidelines used to prevent plutonium from going critical during the various stages of processing and production. Recommendations, made for Buildings 771, 776, 777, 881, and 991, include safety procedures, locations and descriptions of the production processes involved, floor plans, drawings, and approval signatures. Also in the series are two notebooks used to record calculations which determined the criticality levels of various mixtures containing plutonium.

For related records, see Volume II. Nuclear Safety Criticality Group Progress Reports, 1952-1953, 1955-1956, 1958-1962, 1966-1974; Volume III. Building and Equipment Criticality Recommendation Records, 1958-1959, 1967-1979; and Volume IV. Criticality Safety Evaluation Reports, 1991-1994.

Data Elements: 88-89, 102, 107, 117

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