ML20148F216: Difference between revisions

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DOCKET No. 50-29 HAZARDS ANALYSIS BY THE RESEARCH AND POWER REACTOR SAFETY BRANCH DIVISION OF LICENSING AND REGULATION IN THE MATTER OF YANKEE ATOMIC ELECTRIC COMPANY PROPOSED CHANGE NO. 17 l=
Introduction Pursuant to the provisions of paragraph 3.A of License No. DPR-3, as amended, Yankee Atomic Electric Company in Proposed Change No. 17 dated        !' g February 1, 1962 requested authorization to make certain changes in its t
waste disposal system. These changes involve adding a tubular evaporator        p reboiler, a cyclone separator and a reboiler circulating pump to the system.      ==.
The existing electrode evaporator shell and piping connections would be maintained, but all electrical connections to the evaporator would be                      l disconnected. In addition, the present accumulation vent condenser and scrubber system may be isolated, since it is expected that there will be no off-gas produced by the proposed evaporation method. If this Change                .
is authorized, it would be made as soon as practicable following receipt        [.
of necessary equipment from suppliers.                                          Ij Discussion                                                                      ;
l-F Yankee desires to change to a new tubular evaporator reboiler because of the inability of the presently installed electrode evaporator equipment to produce processed water of the minimum specification required for re-use in the primary coolant system. Laboratory tests which Yankee has conducted i
        '001104of(dF                                                                .
 
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indicated that the quality of distillate produced with an external heat source was better by a factor of four than that obtained through electrode      f:t evaporation. As a result, Yankee- proposes to install a forced circulation,              -
steam heated reboiler and cyclone separator, connected to the present evaporator shell. We believe that the installation and use of the new system for the evaporation of. radioactive liquid waste would not represent
::l an increase in potential hazard and, accordingly, that there are no safety t t:. L considerations which would preclude the authorization of this change.                ;.
Conclusion                                                                                .
Based on our review of the Proposed Change, we have concluded that it does            .-
l not present significant hazards considerations not described or implicit        y.
                                                                                          !~  d in the license application as amended to June 23, 1961. We have further          ,    .!
concluded that there is reasonable assurance that the health and safety of
                                                          .                                    u the public would not be endangered by operation of the facility as proposed.
1
                                                                                                'I l
Oriinal signed by hbert H. Bryan Date:                                  Robert H. Bryan, Cnief Research & Power Reactor Safety Branch Division of Licensing and Regulation}}

Latest revision as of 17:14, 21 July 2020

Hazards Analysis Supporting Proposed Change 17 Re Radwaste Disposal Sys
ML20148F216
Person / Time
Site: Yankee Rowe
Issue date: 03/20/1962
From: Bryan R
US ATOMIC ENERGY COMMISSION (AEC)
To:
Shared Package
ML20148F209 List:
References
NUDOCS 8011040718
Download: ML20148F216 (2)
v • d • e


Text

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DOCKET No. 50-29 HAZARDS ANALYSIS BY THE RESEARCH AND POWER REACTOR SAFETY BRANCH DIVISION OF LICENSING AND REGULATION IN THE MATTER OF YANKEE ATOMIC ELECTRIC COMPANY PROPOSED CHANGE NO. 17 l=

Introduction Pursuant to the provisions of paragraph 3.A of License No. DPR-3, as amended, Yankee Atomic Electric Company in Proposed Change No. 17 dated  !' g February 1, 1962 requested authorization to make certain changes in its t

waste disposal system. These changes involve adding a tubular evaporator p reboiler, a cyclone separator and a reboiler circulating pump to the system. ==.

The existing electrode evaporator shell and piping connections would be maintained, but all electrical connections to the evaporator would be l disconnected. In addition, the present accumulation vent condenser and scrubber system may be isolated, since it is expected that there will be no off-gas produced by the proposed evaporation method. If this Change .

is authorized, it would be made as soon as practicable following receipt [.

of necessary equipment from suppliers. Ij Discussion  ;

l-F Yankee desires to change to a new tubular evaporator reboiler because of the inability of the presently installed electrode evaporator equipment to produce processed water of the minimum specification required for re-use in the primary coolant system. Laboratory tests which Yankee has conducted i

'001104of(dF .

'. (.

L. l

/-

indicated that the quality of distillate produced with an external heat source was better by a factor of four than that obtained through electrode f:t evaporation. As a result, Yankee- proposes to install a forced circulation, -

steam heated reboiler and cyclone separator, connected to the present evaporator shell. We believe that the installation and use of the new system for the evaporation of. radioactive liquid waste would not represent

l an increase in potential hazard and, accordingly, that there are no safety t t:. L considerations which would preclude the authorization of this change.  ;.

Conclusion .

Based on our review of the Proposed Change, we have concluded that it does .-

l not present significant hazards considerations not described or implicit y.

!~ d in the license application as amended to June 23, 1961. We have further , .!

concluded that there is reasonable assurance that the health and safety of

. u the public would not be endangered by operation of the facility as proposed.

1

'I l

Oriinal signed by hbert H. Bryan Date: Robert H. Bryan, Cnief Research & Power Reactor Safety Branch Division of Licensing and Regulation

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