ML20134B524
| ML20134B524 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 01/15/1997 |
| From: | Yundt C PORTLAND GENERAL ELECTRIC CO. |
| To: | Stewartsmith D OREGON, STATE OF |
| Shared Package | |
| ML20134B527 | List: |
| References | |
| CPY-003-97, CPY-3-97, NUDOCS 9701300181 | |
| Download: ML20134B524 (8) | |
Text
_.. _. _ _ _ - -.- j l Portland General Electric Company Trojan Nuclear Plant 71760 Columbia River Hwy Rainier. Oregon 97048 January 15,1997 (503) 556-3713 CPY-003-97 Mr. David Stewart-Smith Oregon Department of Energy 625 Marion Street NE l Salem, OR 97310
Dear Mr. Stewart-Smith:
1 Proposed Change to the Troian Decommissioning Plan 02GE-1061) The purpose of this letter is to transmit a proposed change to the Trojan Decommissioning Plan (PGE-1061) which would permit the option of removal and disposition of the reactor vessel and internals as a single entity. Implementation of this option is subject to neceipt of the required regulatory approvals. Oregon Administrative Rule 345-26-270 (d)(4) specifies that significant revisions to the decommissioning plan must be reviewed and approved by the Council prior to implementation and provides criteria for a determination of significance. This proposed change to the decommissioning plan is significant in that it involves a change in the provisions made for hazardous or radios.ctive waste material removal. Accordingly, the Council is requested to review and approve the proposed change. To facilitate this review, Attachment I to this letter provides a description of the proposed 1 change, the reason for the change and a marked-up version of the Trojan Decommissioning Plan. Council approval contingent upon receipt of other required approvals is requested by March 17, 1997, or as soon as practical thereafter. Please contact me at (503) 556-7492 or J. M. Floyd at (503) 556-7434 if you have any questions or if any additional information is needed. Sincerely, C. P. Yundt General Manager, Plant Support and Technical Functions t 9701300181 970115 lhcg g PDR ADOCK 05000344; r' W PDR m
.s l, CPY-003-97 { l January 15,1997 Pane 2 of 2 Attachment c: A. Bless, ODOE w/ attachment L. J. Callan, NRC, Region IV w/o attachment L. E. Kokajko, NRC, NMSS w/o attachment M. T. Masnik, NRC, NRR w/o attachment R. A. Scarano, NRC, Region IV w/o attachment I l I i 4 l 1
>m.-__ .j r ei Description & Reason for Channe
SUMMARY
On April 2,1996, The PGC Board of Directors approved "The Reactor Vessel Internals Removal Authorization for Project"(RVIR AFP) which entailed two options. One option would remove the vessel internals by segmentation, as currently proposed in the Decommissioning Plan. The second - q option would remove the Trojan reactor vessel with internals intact inside and ship the resulting package as a single unit to the US Ecology low-level radioactive waste disposal facility at Hanford, WA. As described above, the current Decommissioning Plan (PGE-1061) proposes the reactor internals to be removed from the vessel, segment the internals, and ship the disposable (per 10CFR61) pieces to US Ecology, and store the remaining nondisposable (high radioactivity) pieces on site. The l nondisposable reactor internals pieces will be stored in the Spent Fuel Pool to be transferred to the j Independent Spent Fuel Storage Installation (ISFSI) with spent fuel. Later, as a separate project, the i reactor vessel will be removed from the site. The RVIR AFP option which removes and dispositions the reactor vessel and internals as a single entity is commonly identified as the Reactdr Vessel and Internals Removal (RVAIR) option. To implement the RVAIR option, after securing the necessary approval (s), an amendment to PGE-1061 is required. Because PGE-1061 is a Licensing Document per Section 3.5 of TPP 18-22, any change mandates obtaining appropriate reviews and approvals via a Licensing Document Change Request (LDCR). SPECIFIC CHANGES A description of the specific changes to PGE-1061, on a Section-by-Section basis, along with the reason for the change is delineated, in Tabular form, in the attachment. These changes, contingent upon receipt of required regulatory approvals, will pennit implementation of the RVAIR option.
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ryc, t .i RVAIR DECOMMISSIONING PLAN REVISIONS f l DECOMMISSIONING DESCRIPTION OF CHANGE REASON FOR CHANGE PLAN SECTION 1.2.1.1 The second to last paragraph is modified to include The RVAIR option is scheduled to be performed RVAIR as a potential major activity to be during the transition period. performed during the transition period. 1.2.3 RVAIRis added to the schedule for The RVAIR option is scheduled to occur during decommissioning during early 1997 - mid 1998. this time frame of the transition period. The Schedule for the separate removal of reactor separate removal of reactor internals (if RVAIR internals (if RVAIR is cancelled) is revised to project is cancelled) reflects the sequence in late 1998 - early 2000. which the activity will be performed. 2.2.2 Item No. 3 under the major activities planned The RVAIR option is scheduled to be performed during the transition period is modified to include during the transition period. RVAIR. 2.2.3 The discussion addressing the removal of reactor The RVAIR option is scheduled to be performed vessel internals during the transition period is during the transition period. modified to include the option of performing RVAIR during this time'. 2.2.5.1 The second paragraph is modified to: 1. include the The changes reflect the current decommissioning option of performing RVAIR prior to the activities schedule. I comple: ion of spent fuel transfer to the ISFSI; and
- 2. delay the option of removing the internals by segmentation after the transfer ofspent fuel to the ISFSL i
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s i ry. ; ! DECOMMISSIONING DESCRIPTION OF CHANGE REASON FOR CHANGE PLAN SECTION + i. t 2.2.5.3 This section is modified to provide for the option of The RVAIR option will allow for the disposal of I performing RVAIR as a method of disposing of the the reactor vessel internals without segmentation [ reactor vessel internals. The original option of and the generation ofgreater than Class C waste. segmenting the internals is retained. l 2.2.5.4 This section is modified to include the RVAIR Removal and segmentation of the reactor internals project as an option for removing and disposing of is the option currently discussed in the the reactor vessel (and internals). When packaged Decommissioning Plan. This option results in together, the reactor vessel and internals together greater than Class C waste that must be stored at can be disposed of as Class C waste. The vessel the ISFSt. The proposed RVAIR option does not i and internals will be shipped as a NRC approved, result in greater than Class C waste. However, { Type B package. the vessel and internals package will be shipped as i a Type B package and thus requires NRC l approval of the package. 2.2.7 This section is modified to reflect that a specific The radioactive waste volume projections [ estimate was performed to determine the projected currently in the Decommissioning Plan are based waste volume for the RVAIR option. In addition, a on the option of separate removal and disposal of l clarification is added to reflect that greater than the reactor vessel and internals. A specific Class C waste results from the option to s parately estimate of the RVAIR option radioactive waste remove and segment the reactor internals. volume was prepared. The RVAIR option does i not result in greater than Class C waste, whereas the separate removal and internal segmentation option does. t i h i I i I
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- ., I DECOMMISSIONING DESCRIPTION OF CIIANGE REASON FOR CIIANGE PLAN SECTION Table 2.2-1 A note is added to this table to indicate that The exposure projections listed in the table are for exposure projections listed represent the option of the separate removal of the internals and reactor removing internals separate from the reactor vessel vessel. The exposure projection for the RVAIR and segmenting them. The exposure projection for option, 67 person-rem, is less aan that for the the RVAIR project is 67 person-rem.
separate removal of the internals and reactor vessel option. Table 2.2-2 A note is added to this table to indicate that waste The waste projections (volume and classification) ( projections listed represent the option to dispose of listed in the table are for the option to separately the internals and the reactor vessel separately. The remove and dispose of the internals and reactor waste projection for the RVAIR project is 8341 vessel. The waste projection for the RVAIR cubic feet of Class C waste. option is 8341 cubic feet of Class C waste. Table 2.2-4 A note is added to this table to indicate that the The waste projections listed in the table are for i waste projections listed represent the option of the option to separately remove and segment the removing internals separate from the reactor vessel reactor vessel internals. The waste projection for and segmenting them. The waste projection for the the RVAIR option is 8341 cubic feet of Class C RVAIR project is 8341 cubic feet of Class C waste. waste. Figure 2-11 The figure is modified to show RVAIR as a major This note clarifies the schedule for the two decommissioning activity. In addition a note is options. added to this figure to clarify that if the RVAIR option is canceled and the option of separate removal of the reactor vessel and internals is selected, then completion of the project is scheduled for late 1998 to early 2000.
4 .- a ,q = DECOMMISSIONING DESCRIPTION OF CHANGE - REASON FOR CHANGE PLAN SECTION - {3.1.2.3 The last paragraph is deleted and a new one is This change clarifies the difference in waste inserted to clarify that greater than Class C waste classification associated with the two options for results from the option to separately remove and disposal of the reactor vessel and internals. dispose of the reactor vessel and internals and not from the RVAIR option. The RVAIR waste package will meet the Class C burial criteria. 3.1.3 A clarification is added to this section to indicate The RVAIR option does not result in greater than that greater than Class C waste results from the Class C waste while the separate internals option to segment the reactor internals and dispose removal and segmentation ' option results in of them separate from the iesctor vessel. greater than Class C waste. 3.3.3 A clarification is added to this section t'o indicate The Decommissioning Plan currently addresses that greater than Class C waste results from the the option to segment the reactor internals and option of segmenting the internals and disposing of dispose of them separate from the reactor vessel. them separate from the reactor vessel. The RVAIR This change addresses the RVAIR option which option results in waste which meets the Class C does not result in greater than Class C waste, burial:dteria. while the separate internals removal and segmentation option results in greater than Class C waste. 3.4.4.2.1 A clarification is added to indicate that the reactor As currently written, the Decommissioning Plan internals may be disposed ofintact with the reactor addresses the separate removal and segmentation vessel or removed senarately and segmented. of the reactor vessel internals. This change adds the option of disposing of the ir.ternals by the RVAIR project which eliminates the need to segment the internals.
DECOMMISSIONING DESCRIPTION OF CIIANGE REASON FOR CIIANGE PLAN SECTION Table 3.1-6 A note is added to this table to indicate that the The table currently shows the burial volume burial volume projections listed in the table are projections for the option to separately remove based on the option to separately remove and the reactor vessel and the internals. The added dispose of the reactor vessel and internals. The note provides the burial volume projection for the burial volume projection for the RVAIR option, RVAIR cption. 834 I cubic feet of Class C waste, is identified in the note. 5.1.2.1 The last paragraph is modified to indicate that a The decommissioning cost estimate is based on specific cost estimate was performed for the the option to separately remove and dispose of RVAIR option. Additional discussion is provided the reactor vessel and reactor internals. This to clarify that the cost estimates shown.in change provides clarification that a specific cost Tables 5.1-1 and 5.1-2 represent the separate vessel estimate for the RVAIR option was performed and internal removal option. The estimated cost for and that the resulting RVAIR costs are estimated the RVAIR option is approximately 38% less. to be approximately 38% less than those for the other option.}}