ML20134L248

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Rev 0 to Sys Needed for Decommissioning Sys Evaluation Process
ML20134L248
Person / Time
Site: Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date: 12/30/1996
From: Haseltine J, Sabean D
CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20134L236 List:
References
NUDOCS 9702180381
Download: ML20134L248 (6)
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Connecticut Yankee Decommissioning l

Systems Needed For Decommissioning l System Evaluation Process 1

1 j GRPI

Revision 0 4

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' Prepared by: h Date: #z-30-96 Duncan A. Sabean 0

Approved by: M/ Date: /1/ M (

fohn D. Hasfitine 9702180381 970206 I PDR ADOCK 05000213

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I Systems Needed For Decommissioning

, System Evaluation Process GRPI Revision 0 GOAL The goals of this effort are to:

1. Define the system evaluation process.
2. Implement the process to determine which of the current plant systems are required and which are not required for plant decommissioning.

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This includes placing systems in the following classifications

l e Operable i e Available / Operational ,

e Isolated /In Lay-up l e Abandoned i

I-J' ROLES i The following groups are responsible for activities I through 5, which are identified in the Process section below: i i 1 Activity Resnonsible Groun(s) '

l. Tech Support System Engineers and SROs
2. Tech Support System Engineers and SROs
3. Tech Support System Engineers
4. Design Engineering and Licensing
5. Design Engineering Additional roles and responsibilities for this GRPI are as follows:
  • Engineering Director to approve GRPI and provide resource allocation to ensure completion of project in a timely manner. ,

e Tech Support and Design Engineering to revise WCM 2.2-11, presently titled,

" Disposition ofInfrequently Used and Abandoned Equipment", which will control this process.

  • PORC to approve the final package.

PROCESS Refer to Attachment 1, "Requimd Plant System Screening Process for Defueled Condition". The process will consist of the following activities:

1. Review every plant system and initially determine classification.
2. Review and mark-up P& ids for each system using the classifications and corresponding color codes, per WCM 2.2-11, Rev 1 (under draft). Each System Engineer will identify interfaces and insure consistency with interfacing System Engineer.
3. Define and document the bases for each system classification per WCM 2.2-11, Rev 1 and include as a package with the marked up P& ids.
4. Screen classification packages for acceptability, including the following activities:
  • Determine if any Design Basis / Licensing Basis commitments are affected.
  • Determine system interface acceptability, e Identify and mark-up electrical / instrumentation requirements on P& ids and one line diagrams.
  • Prepare / complete dependency trees (See Attachment 2 for a draft sample).
  • Prepare finalized system classifications.
5. Collate all system classification packages for PORC approval per WCM 2.2-11, Rev 1.

Note: As a trial run to test the process, four systems will be selected that encompass all

. classifications and activities 1 through 4 above will be completed for each.

(Service Water, Auxiliary Feedwater, Boric Acid, and Reactor Coolant)

The system evaluation process (i.e., the " Systems Needed for Decommissioning" activity) will provide vital input to the following activities identified in the Decommissioning Activities Matrix:

e System Reclassification

. Maintenance Rule e _ RCS Decontamination Study e Dismantling

. Fire Protection e Energy Efficiency e UFSAR Revision e PSDAR Development This process will also provide input to the overall decommissioning schedule and cost estimate.

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INTERPERSONAL The following interpersonal relationship guidelines will be used to improve the efficiency j of the system evaluation process:

  • All interested organizations will be included in the preparation of the GRPI, the j WCM revision, and the classification of systems.

. Communication will be made with Yankee personnel who have worked on similar areas for the Rowe decommissioning in an effort to learn from their experience.

. Frequent meetings will be held with personnel from groups having key roles in the i process to maintain open lines of communication between the groups. ,

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ATTACHMENT 1 Required Plant System Screening Process for Defueled Condition JLD 12n7 System Evaluation Systems decom./ Process 4 defueled lists. Need  ; ,

PORC Review '

V is system operability Comply with all Has Tech Spec required by Tech yes u applicable PMs, operability r surveillances, etc.

requirements >yes Specs? Jg changed?

no l Y Define / perform applicable 4 "

Does system need to PMs, testing and be available in future 7 yes inspection requirements to permit future operation.

no no Y p Process abandoned is equipmTnt currently Has need for systems per WCM-2.2- yes u future system beir.g used? yes 11, Group Iand 7 operabiliy abandon in place. changed?

Verify that abandoned no fluid systems are drained; abandoned Y d electrical systems are Based on !ayup, maint., y and freeze protection is system part of de-energized.

requirements, process per the Nuclear Island? -

WCM 2.2-11, Group 11 _

V equipment, if feasible. no Formal approval by Consider NOP 2.0-4, Layup Conditions of PDCR and 50.59 necessary prior to Systems / Components. yes V dismantling. Note that Continue applic.

dismantling will not be maint, surv. and V

performed under WCM u layup until formally F '

2.2-11.

tumed over to decom. organiz.

Notes: 1) WCM 2.2-11 is the abandoned equipment procedure. It applies to Group i equipment, which is no longer used and not intended to be used in the future, and Group 11 equipment, which may be used in the future and should be maintained on a minimal basis, either in place or in storage.

2) NOP 2.0-4 defines layup conditions for systems and components.

It should be used when specifying layup requirements for equipment which may be used in the future.

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ATT 7HMENT 2 SPENT FUEL POOL SUPPORT SYSTEMS SPENT FUEL POOL .

S YARD CRANE --

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......l.....3 BUILDING I I I I SFP MAKEUP I

SPENT FUEL SFP VENT.  ! INSTRUMENT: LIGHTING FIRE 4

.............j HEAT POOL COOL & PURIF PROTECTION
  • l I I I I I I I I I -

EXHA ST HEATING STM C T ELEC PWR PURIF SYS MAKEUP ELEC PUMP D L 3g C P WCC 2 I I

ELEC PWR P MA Y ELEC PWR FUEL OIL

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MCC 8 MCC 5 MCC 2 BUS 4 BUS 6 ,

l I CLCSED

  • FILTERS F.O.SYS COOLING ELEC PWR ELEC PWR  :

WA"ER g  !

MCC 8 N/A l l MCC 3  :

STACK ELEC PWR ELEC PWR ECOLOCHEM MCC 5 BUS 4 MCC 3 BUS 6 t l

Bt S 11 ELEC PWR l uCC7 4

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__.E_R_J SERVICE i _ _WAT

_L _ _WELL l WATER . ..

WELL WATER ELEC PWR  !

f ELEC PWR f MCC 3 I L

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