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Accession #: D295184949

Document #: SD-CP-FAR-002

TitlelDesc: PUREX PLANT DEACTIVATION FUNCTION ANALYSIS REPORT

Pages: 33

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6. Cop. Ewr.: Dennis P . Lund

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1 WHC-SD-CP-FAR-002 N/A 0 PUREX P l a n t N/A 2 1 1 Deact iva t ion Function Analysis Report

4. Related ED1 Yo.:

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7. Purchase Order No.:

9 . Ewip.lC-nt No.:

10. SysteWB Ldg . /Fec i 1 i t y :

PUREX 12. Major A.m. DW. Yo.:

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14. Rcquired R e s p o ~ c Date:

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80-7400-172-2 ( 0 4 / 9 4 ) GEFOP7

RELEASE AUTHORIZATION

I Document Number: WHC-SD-CP-FAR-002, REV 0

=Document Title: PUREX Plant Deactivation Function Analysis Report

Release Date: 11/3/95

This document was reviewed following the procedures described in WHC-CM-34 and is:

APPROVED FOR PUBLIC RELEASE

WHC Information Release Administration Specialist: ,

i /

P 4 . h - AA c-- x a r a Broz

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SUPPORTING DOCUMENT I 1. Total Pages 30

!. Title 3. umber 4. Rev No.

JUREX Plant Deactivation Function Analysis Report WHC-SD-CP-FAR-002 0 i. Key Yords 6. Author

JUREX Function Analysis Report, Function Analysis ~ m : DP Lund ieport, PUREX Deactivation Function Analysis T@

Signature

?. A h t r a c t

The document contains the functions, function definitions, function interfaces, Function interface definitions, Input Computer Automated Manufacturing Definition (IDEFO) diagrams, and a function hierarchy chart that describe what needs to be performed to deactivate PUREX.

8 . RELEASE S T M P

1 OFFICIAL RELEASE 1 BYWHC

A-6400-073 (08 /94) YEF124

WHC-SO-CP-FAR-002, Revision 0

1.2 MISSION STATEMENT

The PUREX Mission Statement was developed during mission analysis and i s reported in WHC-SD-CP-MAR-002 PUREX Plant Deactivation Mission Analysis Report. It is repeated below:

"The purpose of the PUREX Deactivation Project is to prepare PUREX for Decontamination and Decommissioning (D&D) within a five year time frame. This will be accomplished by establishing a passively safe and environmentally secure configuration of the PUREX Plant, that can be preserved for a 10-year horizon. During deactivation, appropriate portions of the safety envelope will be maintained to ensure deactivation takes place in a safe and regulatory compliant manner. Stakeholders will be actively involved during deactivation. "

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WHC-SD-CP-FAR-002, Revision 0

2.0 PUREX FUNCTIONS

Identifying PUREX functions and subfunctions creates a functional hierarchy called a tree. "Deactivate PUREX." It is broken down into a number of major, necessary, and sufficient functions that, when completed in the prescribed logic, will ensure that the mission to deactivate PUREX is accomplished. decomposition process is repeated for successively more detailed functional levels until known (precedented) solutions are available. Each function and subfunction is precisely defined. System function definitions are essential to establish what PUREX must do to execute its mission successfully. Formal definitions create understanding of all aspects of the system being engineered (i .e. hardware, software, facility, processes, services, or modifications) and provide a mechanism to insure that all parts of the system contribute to fulfill the PUREX mission.

The analysis begins with the top level function,

The functional

'

The ultimate function of the PUREX system is to perform operations that satisfy the mission need identified in WHC-SD-CP-MAR-002 PUREX Plant Deactivation Mission Analysis Report repeated below:

"PUREX has no future mission, and is expensive to maintain in its current configuration. Nuclear, radioactive and hazardous materials are not currently in an acceptable configuration for turn over to Environmental Restoration (ER). PUREX must be deactivated to a point where only minimal maintenance and surveillance is required to maintain the facility for 10 years or mare while awaiting D&D and where safe and compliant D&D operations can take place."

2.1 RELATIONSHIP TO HANFORD SITE FUNCTIONAL HIERARCHY

The PUREX mission statement developed during the PUREX mission analysis is consistent with the top level (0 Cleanup Hanford ) and the first, second and third level functions (4.0 Remedy Unsafe and Unacceptable Conditions, 4.1 Deactivate Facilities and 4.1.1 Deactivate Facilities with Special Nuclear Materials and Nuclear Materials (Type 1 Facility) first identified in WHC-EP- 0722 "Systems Engineering Functians and Requirements for the Hanford Cleanup Mission: First Issue" of January 1994 and later revised and maintained as the Hanford Site Integrated Technical Base1 ine (HSITB). This function hierarchy is shown in Figure 1. Deactivate PUREX.

The PUREX mission begins with function 4.1.1.6

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WHC-SD-CP-FAR-002, Revision 0

Clean Up Hanford 1 Remedy Unsafe And

Unacceptable Conditions 71 Deactivate Facillties I 4.1.1 I Deactivate Facilities With

Speci a1 Nuclear Materi a1 s & Nuclear Materials (Type 1 Facility)

Figure 1. Hanford Site Function Hierarchy

2.2 FUNCTION HIERARCHY

The detailed PUREX functional hierarchy is presented in Addendum 1. It begins at level four (4.1.1.6 Deactivate PUREX) and continues to level six and in some places level seven.

2.3 FUNCTION DEFINITION TABLE

The definitions of the PUREX functions in the functional hierarchy in Addendum 1 are presented in Addendum 2.

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WHC-SD-CP-FAR-002, Revision 0

4.0 ISSUES

Listed below are issues that were identified in the PUREX Functional Analysis workshops. These issues will be further refined and clarified in order to effectively attached them to the functions and interfaces contained in the systems model in RDD-100.

Disposition of Single Pass Reactor Fuel

0 Disposition of N Reactor Fuel

Develop D&D endpoint criteria

Contaminated sol vent disposal

Contaminated acid disposal

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WHC-SD-CP-FAR-002, R e v i s i o n 0

4.l.l.6.3.3 7 4.1.1.6.1.5

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WHC-SD-CP-FAR-002, R e v i s i o n 0

4.1.1.6.1.4.2

4.1.1.6.1.4.3

[4.1.1.6] Deactivate PUREX Facilily

remain in a safe and comoliant condition. Maintain WREX Qualification and Certification Provides periodic personnel skills check, assessment, and testing required to maintain necessary oualifications and certifications. Maintain PUREX Training Documentation Maintains applicable w d e r training documentation. Documentation includes worker safery and comoetancv aualification and certification.

Ocfober 10, 1995

Hanford Site Systems Engineering A2-3

WHC-SD-CP-FAR-002, R e v i s i o n 0 [4.1.1.6] Deactivate PURCY Faciiify

,Function Definitions 4.1.1.6.1.5 Assess PUREX Safety & Compliance State

Performdresponds to oversight assessments and perform appropriate self assessments of the facility deactivation activities to evaluate the facilitv and owrations safetv and comoliance status. Support Independent PUREX Oversight Audits Performs and resoonds to indeoendant oversiaht audits.

Performs self assessments of facilify operations to ensure that safefy and compliance are

4.1.1.6.1.5.1

4.1.1.6.1.5.2 Perform PUREX Management Assessments

October 10, 1995

ine PUREX Deactivation Plans & Negotiate Turnover Endpoint the current state ofthetacMy, identify anuor negotiate material and equipment dispositia

rize contamination and vew contamination levels, and to assist with

I 4.1.1.6.2.1.6 I Summarize & Document WREX Facility Initial State ILlevelcj~s and provides a documentation summaw or mafrix that clearly and completely defines

Develop PUREX Facility M i v a t i o n Plans

Hanford Sife Systems Engineering A2-4

October 10,1995

, packages, and dispositions resources and waste for PUREX facilities containing

W F materials for temporary storage and transfer, and transports

MINF materials in !he

ldiswsition decision makina.

Hanford Site Systems Engineering A2-6

WHC-SD-CP-FAR-002, R e v i s i o n 0

ADDENDUM 3 - IDEFO DIAGRAMS

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WHC-SD-Cp-FAR-OOZ, Revision IDEF3 Diagram [J. 1.1.6.31 Stabilize & Reconfigure PUREX Facilities For hlinimum Surveillance

Tronririon Projecrs

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October 10, 1995 3:32:38 pm

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WHC-SD-CP-FAR-002, Revis ion 0

lnferface PUREX Assessment Needdlnformation The information and needs for PUREX compliance assessmwnt

oclober 10, 1995

Constituents

[4.1.1.6J Deactivate PUREl Faciliiy

Plan containing the requirements defined in the turnover specification that must be met before DBD willaccept the facilify. W a i n systems may need lo be deactivated. Contaminated areas will need stabilization. Materials and equipment may need to be removed, ie. €17. PUREX Deactivation Safety, Security, and Compliance Constraints Constraints required lo maintain the safety, security, and compliance of the PURH facilities. .Examples include HVAG system requirements, configuration, electrical system requiremenfslconfiguration, instrument requirementslconfiguralion, materia/ storage configuratioMocation, fire alarm svstem, etc. FUREX Desian Needsllnformation PUREX Direction 81 Control Prqect specific management guidance based on the status of ,imc&mentation of the Defined Work Packaaes PUREX Disposition Status lnformation hformation on the status of the disposfiion of PUREX resources and

PUREX Documentation Needwlnformation PUREX Facilities EquipmenUStructure Maintained PUR& facilify equipmenUstructures maintained by appropriate preventive and corrective maintenance. PUREX Facilities Maintained All necessary resources for safe and compliant operafion of fype 1 .facilities in accordance with aovernina safefv codes and reaolations.

PUREX Facilities EquipmenVStructure Maintained PUREX Facilihr Operations Maintained