PROGRESS IN THE PREPARATION OF A DECOMMISSIONING PLAN

Transcription

1 PROGRESS IN THE PREPARATION OF A DECOMMISSIONING PLAN WORKSHOP ON RESEARCH REACTOR DECOMMISSIONING ACTVITIES: COST ESTIMATES 30 MARCH 03 APRIL 2009, MANILA, PHILIPPINES KHAIRONIE MOHAMED TAKIP MALAYSIA NUKLEAR AGENCY (NUKLEAR MALAYSIA) BANGI, KAJANG, SELANGOR 1

2 CONTENT Introduction Reactor TRIGA PUSPATI (RTP) Current Activities Conclusion 2

3 INTRODUCTION research reactor TRIGA Mark II Puspati (RTP) operation since 1982 no foreseeable intention to shutdown the facility in the immediate future Safety Analysis Report; Chapter 19 aspects to facilitate the decommissioning process have been considered from beginning considerations, during design and construction during operation 3

4 REAKTOR TRIGA PUSPATI 4

5 NUCLEAR MALAYSIA: ORGANIZATION STRUCTURE DIRECTOR GENERAL Dep. General Research & Technology Development Program Dep. General Technical Services Program Senior Commercialization & Tech.Planning Program Senior Management Program Medical Technology Division Engineering Division Commercialization Technology Division Management Services Division Industry Technology Division Technical Support Division Secondary Standard Dosimetry Laboratory Human Resources Division Radiation Processing Technology Division Radiation Safety & Health Division MINTec-Sinagama Raymintex Corp. Comm. &Information Management Division Agrotechnology & Biosciences Division Nuclear Power Division Alurtron Planning & International Relation Division Waste & Environmental Technology Division Training Centre Research management Centre 5

6 CURRENT ACTIVITIES propose upgrading RTP power from 1MW to 2MW or 3 MW preparing detail techno economic study for upgrading RTP designing fuel transfer cask as well as spent fuel storage tank - under preliminary process 6

7 CONCLUSION working towards developing a decommissioning plan to follow progress in the field of decommissioning technology available in the world 7

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9 NUCLEAR ENERGY DEVELOPMENT ROADMAP NEW MPR/HTTR 1 st st NPP 2 nd Generation IV nd NPP RTP Upgrade Generation III Plus MPR/HTTR RTP Short Term Medium Term Long Long Term Term AGENSI NUKLEAR MALAYSIA 9 35

10 Preliminary Techno Economic Study of Upgrading RTP For upgrading to 2-MW and above power level, it is envisaged that both the core top and bottom grid plates need to be replaced. For the 3-MW power level, almost the entire core structure need to be dismantled and replaced with a new core structure To facilitate these engineering modifications, the following is a listing of the items that comprise the scope of work for the upgrade to 3 MW:- Spent Fuel Storage Tank Most of the nuclear materials, especially the irradiated fuel elements in the reactor tank must be removed from the reactor to reduce the radiation exposure during installation of various components in the core. In total, there are more than 100 irradiated fuel elements. The tank must be designed such that the k-effective of the storage rack is within the acceptable limits as speculated in the license. 10

11 ..Continue Fuel Transfer Cask A fuel transfer cask need to be made available for transferring each and every irradiated fuel element from the reactor tank to the Spent Fuel Storage Tank above Source term calculations must be performed to determine the maximum level of gamma radiation and neutrons from the highest burnup fuel element. Crane The crane system need to be extended so that the fuel transfer cask can be used to transfer irradiated fuel elements from the reactor tank to the spent Fuel Storage tank and vice versa. 11