ML20213D909
| ML20213D909 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 11/03/1981 |
| From: | Benaroya V Office of Nuclear Reactor Regulation |
| To: | Pawlicki S Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-0422, CON-WNP-422 NUDOCS 8111300371 | |
| Download: ML20213D909 (2) | |
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- 0TE TO: Stefan Paulicki, Chief 4
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!!aterials Engineering Branch, DE
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Victor Benaroya, Chief b
Chenical Engineering Branch, DE t
4 ca SUCJECT: SECONDARY REVIEU If:PUT FOR UPPS I:UCLEAR PROJECT U::IT 2 UASHI:GTOM PUCLIC PO'.!ER SUPPLY SYSTEi: (GL) (OCI'ET i:0. 50-307 Licensing Stage: OL-SER Revieuer:
D. Turovlin Status of Revieu: Secondary Revieu Conplete The Corrosion Engineering Section of the Chemical Engineering Branch has revieued FSAR Sections 4.5.1 " Control Rod Drive I:sterials," 4.5.2 "Eeactor Internals," 5.2.3 "feactor Coolant Pressure Coundary i:aterials," C.1.1
" Engineered Safety Features l'aterials" for naterials conpatibility and corrosion aspects. ! e understand that you will review the special naterials considerations on BWR pipe cracking under SRP 5.2.3.
He are providing you uith the following evaluation in accordance with our secondary revieu responsibility which includes environrental compati-bility.
The raterials of construction exposed to the reactor coolant, secondary coolant, and containa nt sprays are conpatible uith the expected environnent as proven by extensive testing and satisfactory performance. Cencral corrosion of all naterials except carbon and lou alloy steel is expected to.be negligible. For these naterials, conservative corrosion allowances have been provided in accordance with the requirenents of Section III of the AS"E Code, b
The external non-cetallic insulation to be used on austenitic stainless steel components conforns with the reconnendations of Regulatory Guide 1.36 " Hon-Metallic Thernal Insulation for Austenitic Stainless Steels."
The onsite cleaning and cleanliness controls during fabrication and erection conform to the recommendations of AMSI Standard i:45.2.1 - 1973 " Cleaning of Fluid Systens and Associated Conponents During the Construction Phase of i:uclear Pouer Plants," and Regulatory Guide 1.37 " Quality Assurance Require-nents for the Cleaning of Fluid Systens and Associated Components of Uater-Cooled l:uclear Power Plants."
The use of natorials of proven perfornance in service and the confornance with the recomendations of the stated Regulatory Guides and Codes constitutes an acceptable basis for satisfying the requirements of ::RC General Design
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,l Criterion 4, Environmental Design" with respect to the compatibility of q
naterials and components with the environnental conditions associated with nornal operation, maintenance, testing and postulated accidents.
The selection and use of the materials further satisfies the requirements of GDC 14 " Reactor Coolant Pressure Boundary" as it relates to a design having 4
an extrenely lou probability of abnormal leakage, of rapidly propagating failure and of gross rupture.
Cased upon our evaluation above we conclude that the naterials used in the above systems are acceptable from the corrosion point pf vicu.
Victor Donaroya, Chief Chenical Engineering Branch Division of Engineering
Contact:
D. Turovlin x2005G cc:
P.. Vollmer l!. Johnston U. I!azelton G. Johnson P. !:attheus
!!. Conrad S. Kirslis C. Turovlin
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