CLASSIFICATION OF THE MGR SUBSURFACE FACILITY SYSTEM Page: 4 of 31
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Title: Classification of the MGR Subsurface Facility System
Document Identifier: ANL-SFS-SE-000001 REV 00 Page: 4 of 12
1. PURPOSE
The purpose of this analysis is to document the Quality Assurance (QA) classification of the
Monitored Geologic Repository (MGR) subsurface facility system structures, systems and
components (SSCs) performed by the MGR Safety Assurance Department. This analysis also
provides the basis for revision of YMP/90-55Q, Q-List (YMP 1998). The Q-List identifies those
MGR SSCs subject to the requirements of DOE/RW-0333P, Quality Assurance Requirements and
Description (QARD) (DOE 1998). This QA classification incorporates the current MGR design and
the results of the Preliminary Preclosure Design Basis Event Calculations for the Monitored
Geologic Repository (CRWMS M&O 1998a).
2. QUALITY ASSURANCE
This analysis is subject to the requirements of the QARD (DOE 1998) as determined by procedures
QAP-2-0, Conduct of Activities, and NLP-3-18, Documentation of QA Controls on Drawings,
Specifications, Design Analyses, and Technical Documents. Design Basis Event Definition &
Analysis/QA Classification Analysis (1.2.1.11) Activity Evaluation (CRWMS M&O 1999a) presents
the QAP-2-0 activity evaluation addressing the QA classification of MGR SSCs. This analysis is
performed in accordance with procedures QAP-2-3, Classification of Permanent Items, and
AP-3.1OQ, Analyses and Models, and provides input to the design of SSCs included on the Q-List
(YMP 1998). Unverified design inputs are identified and tracked in accordance with NLP-3-15, To
Be Verified (TBV) and To Be Determined (TBD) Monitoring System.
3. COMPUTER SOFTWARE AND MODEL USAGE
This analysis uses no software which is required to be controlled in accordance with procedure
AP-SI.1Q, Software Management.
4. INPUTS
4.1 PARAMETERS
The offsite radiological consequences of MGR Category 1 and 2 design basis events (DBEs), as
calculated in Preliminary Preclosure Design Basis Event Calculations for the Monitored Geologic
Repository (CRWMS M&O 1998a), are utilized in the QA classification of MGR SSCs. These
results represent a conservative evaluation of MGR DBEs and the best information available. As
discussed in Section 6.1 of this analysis, NUREG-1318, Technical Position on Items and Activities
in the High-Level Waste Geologic Repository Program Subject to Quality Assurance Requirements
(NRC 1998, Section 4.2(a)) allows the use of engineering judgement and conservative bounding
assumptions in the QA classification of facility SSCs when data sources are limited. Also, procedure
YAP-2.7Q, Item Classification and Maintenance of the Q-List (Attachment 3, Section a), directs the
use of the highest level of detail available to support the conclusion of the QA classification analysis.
Civilian Radioactive Waste Management System
Management & Operating Contractor
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Garrett, R. J. CLASSIFICATION OF THE MGR SUBSURFACE FACILITY SYSTEM, report, August 31, 1999; Oak Ridge, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc782129/m1/4/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.