ML20207N168
| ML20207N168 | |
| Person / Time | |
|---|---|
| Issue date: | 11/12/1987 |
| From: | Feldman C NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Johnson T NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20205F142 | List:
|
| References | |
| FOIA-88-361 NUDOCS 8810180537 | |
| Download: ML20207N168 (4) | |
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NOV 121987 MEMORANDUM FOR:
Timothy C. Johnson, NMSS/RB FROM:
Carl Feldman, RES/MEB
SUBJECT:
REVIEW OF RESNIX0FF REPORT We have reviewed the Resnikoff Report, "Living Without Land"t," and find, except for some obvious anti-nuclear bias, that it is techn -
y, for the most part, accurate in the reactor decomissioning area. Ho mver, there are two comments on P.14 (the first and second paragraphs) that we disagree with. First, dismantle ant can be accomplished within about 5 years following reactor shutdown.
It is not necessary to wait 30 years as Resnikoff claims (see NUREG/CR-0130. Technology, Safety and Costs for Decomissioning a Pressurized Water Power Station, Battelle-Pacific Northwest Leboratory, June 1978 and similar NUREG/CR-0678 for BWR's, June 1980). After about a year the short lived hot components decay away and the primary dose contributing r.uclide is Co-60.
Imediate dismantlement results in an occupational dose of about 1200 man-rem (spread over 5 years) for a PWR and a dose of about 400 man-rem afte-30 years. The average dose to or.cupational workers during reactor operation is on the order of 500 man-rem / year.
Second, the technology for segmenting metal thicknesses beyond 11 inches is not new -- routine segmentation of non-radioactive metal, such as for cutting up battle ships is comonly done.
For radioactivity, experiments using an auto-mated oxyacetaline torch has been demonstrated to be easily accomplished for thick steels (non-radioactive) and is directly applicable for radioactive reactor pressure vessels (Reactor Vessel Seccioning Demonstration, R. A.
Lundgren, PNL-3687, Rev. 1. Sept. 1981, Battelle-Pacific Northwest Laboratory.
We should clear up definition in'our proposed and existing rules to mean un-restricted release.
In the case of LLW, decomissioning is used to mean a period of indeterminate safe storage. However, in our proposed rule, decomis-sioning means unrestricted release and license tennination.
Resnikoff uses the word "decomissioning" to mean two different things as well.
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Carl Feldman RES/MEB l
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NEMORANDUM FOR:
Timothy C. Johnson, NMSS/ "
FROF Carl Feldman, RES/MEB
SUBJECT:
REVIEW OF RESNIK0FF REPORT We have reviewed the Resnikoff Report "Living Without Landfills," and find, except for some obvious anti-nuclear bias, that it is technically, for the most part, accurate in the reactor decommissioning area. However, there are two consents on P.14 (the first and second paragraphs) that we disagree with.
First, dismantlement can be accomplished within about 5 years following reactor shutdown.
It is not necessary to wait 30 years as Resnikoff claims (see NUREG/CR-0130. Technology, Safety and Costs for Decommissioning a Pressurized Water Power Station, Battelle-Pacific Northwest Laboratory, June 1978 and similar NUREG/CR-0 for BWR's, June 1980). After about a year the short lived hot components e y away and the primary dose contributing nuclide is Co-60.
Imediate dismantlement results in an occupational dose of about 1200 man-rem (spread over 5 years) for a PWR and a dose of about 400 man-rem after 30 years.
The average dose to occupational workers during reactor operation is on the order of 500 man-rem / year.
Second, the technology for segmenting metal thicknesses beyond 11 inches is not new -- routine segmentation of non-radioactive metal, such as for cutting up battle ships is comonly done.
For radioactivity, experiments using an auto-mated oxyacetaline torch has been demonstrated to be easily accomplished for thick steels (non-radioactive) and is directly applicable for radioactive reactor pressure vessels (Reactor Vessel Sectioning Demonstration, R. A.
Lundgren, PNL-3687, Rev.1. Sept.1981, Battelle-Pjcific Northwest Laboratory.)
& @'~1 We should clear up definition in our proposederulesto mean unrestricted sej~ever+wtth-respect -te LLW decomissioning is used to mean a period f i determinate safe storage. Resnikoff uses decomissioning to mean two 3
different things as well.
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