ML20136F649
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m-UNITED STATES
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NUCLEAR REQULATORY COMMISSION 5
WAsHWGTON, D. C. 20055 JAll 1 1 1985 Docket No. 50-424
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MEMORANDUM FOR: Elinor Adensas Chief Licensing Branch No. 4 Division.of Licensing FROM:
Vincent S. Noonan, Chief Equipment Qualification Branch
_ Division of Engineering e
SUBdECT:
REQUEST FOR ADDITIONAL INFORMATION ON ENVIRONMENTAL
' QUALIFICATION OF ELECTRIC EQUIPMENT IMPORTANT TO SAFETY AND SAFETY-RELATED MECHANICAL EQUIPMENT.
e Plant Name:
Vogtle Electric Generating Plant Docket No.:
50-424 Licensing Stage: 0L Responsible Branch: Licensing Branch No. 4 Project Manager:
M. Miller g
Review Status: Additional Infomation Required i
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The Equipment Qualification Branch, Division of Engineering has reviewedFSARSection3.il.
Based on this review, the additional infor-mation identified in the attachment must be provided before a detailed review can take place.
3 Vine S. Noonan, Chief Equipment Qualification Branch Division of Engineering
Enclosure:
As stated cc:
J. P. Knight' T. Novak M. Miller R. LaGrange EQ Section
Contact:
H. Garg Ext.-28206 O
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2/0.1 Prior t,o.the complction of cur revicw of your ifcensa tpplication, it is n:ctsstry that wa cstablish thit y u comply with the Commissien's requirements cpplicable to envircnmentn1 qualification contained in 10 CFR 50.49 for electrical equipment important to safety; GDC 4,' Appendix A,10 CFR 50; and Appendix B,10 CFR 50, Sections III, XI, XVII.
As a result of the issuance of Section 50.49 of 10 CFR Part 50, l
some of the information requested in SRP3.n and R.G.1.70, l,
Section 3. n, is no longer required for staff review.
Other new information is required, however, and is defined in this guidance.
By utilizing these guidelines.to demonstrate compliance with the Commission's regulations, applicants can significantly reduce'the need for requests for additional i
infonnation from the NRC staff. The information required may be submitted in Section 3.n of the FSAR or in a separate submittal.
If the latter approach is chosen, Section 3.n I
.should reference the information in the environmental ~ qualifi-cation program submittal.
The following guidelines summarize
' the information to be furnished to the staff:
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The applicable criteria should be identified and shown a.
to have been incorporated into the environmental quali-fication program.
b.
The systems and components selected for harsh environment qualification should be identified and demonstrated to be.
complete.
Correlation with. Table 3.2.1 of the FSAR should be provided for identification of safety-related equipment.
Safety-related equipment exempted from harsh environment i
qualification requirements should be justified.
Th'e scope of safety related electrical equipment that should be. identified is defined in 50.49(b)(1)..
To demonstrate compliance with 50,49 (b) (2).concerning nonsafety-related electrical equipment whose failure could prevent the satisfactory accomplishment of safety l
functions, and 50.49 (b)'(3), post-accident monitoring equipment, the following information should be provided:
(1) a list of all nonsafety-related electrical equipment, located in a harsh environment, whose failure under postulated environmental conditions could prevent the satisfactory accomplishment of safety functions by the safety-related equipment. A description of the method used to identify this equipment must also be included.
The nonsafety-related equipment identified must be included in,the environmental qualification program.
a list of all post-accident monitoring equipment currently i
(2) installed, or that will be installed before plant operation, that is specified as Categcry 1 and 2 in R.G. 1.97 and i.s, '
located in a harsh environment. The equpiment identified -
must be included in the environmental qualification program, unless adequate justification for not requiring environmental qualification of the equipment is provided.
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The normal, abnormal, and cccidiat cnvironments sh uld be Refcrcnces should be ::ade to c.
provided for e ch plant zene.other FSAR sections, where appropriate The requirement used to determine accident environments.
for calculation of the radiation doses to equipment in close
. proximity to recirculating fluid systems inside and ou not depressurize should be incorporated into the programThe time dependent
.(II.B.2 of TMI Action Plan, NUREG-0737). environments s i
.The qualification methodology should be.sumarized by reference to appropriate criteria (Reg. Guides, industry standards, etc.)
d.
and should address the following areas:
_ Margin
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-(2)' ' Aging Dose rate and Eynergistic effects t.
(3)
(4) Use' of analysis for qualification The main'te' nance / surveillance program, in particular its conformance with R.G.1.33 and the industry st.andard (5) it endorses, and its.use in the ag'ng program for equip-ment qualification.
All equipment located in a harsh environ, me
- a. s e.
For Hild environment equipment need not be included in this list.
- electrical equipment, the information regures An acceptable format for this information was provided with IE Other formats-Bulletin 79-01B in the form of "SCEW sheets."
providing the same information may be submitted however.
The information requested in item 4 of Appen staff..
For mechanical equipment, the staff review will concentrate on materials which are sensitive to environmental effects, for f.
example, seals, gaskets,- lubricants, fluids for hydraulicA re systems, diaphragms, etc.
performed that includes the following:
Identification of safety-related mechanical equipment located in-harsh environment areas, included required (1) operating time.
l Identification of non-metallic subcomponents of (2) this equipment.
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Identification of the environmental conditions this (3)
The environments equipment.must be qualified for. defined in the electrical e applicable to mechanical equipment.-
Identification of non-meta'llic material capabilities.
(4) g Evaluation of environmental' effects., '
(5)
From The list of equipm'ent identified should be submit mechanical equipment for which documentation of their environmental qualification.should be provided for review.
Also, the results of the review should be~ provided for all.
mechanical. equipment in harsh environment areas and corrective Justification for inte' rim operation must actions identified.be submitted prior to. fuel load for any mechan whose qualification,cannot be' established.
Upon receipt of the above information, we will review ~your env
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B, qualification program for compliance with 10 CFR 50.49, and App 10 CFR 50, and request any additional information needed to establi j
We will then perform an audit review of your electrical equipment environmental qualification files and associated its acceptability.
Following this audit, an SER supplement will be prepared documenting the results of our revie installed equipment.
you are in compliance with 10 CFR 50.49 and Appendix B,10 CF
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