ML20129C772
| ML20129C772 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/10/1985 |
| From: | Carey J DUQUESNE LIGHT CO. |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| 2NRC-5-101, NUDOCS 8507160325 | |
| Download: ML20129C772 (5) | |
Text
P-D' thV4 2NRC-5-101 (412) 787-5141 (412)923-1960 Nuclear Construction Division Telecopy (412) 787-2629 Robinson Plaza, Building 2. Suite 210 Pittsburgh, PA 15205 July 10, 1985 United States Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Mr. George W. Knighton, Chief Licensing Branch 3 Of fice of Nuclear Reactor Regulation
SUBJECT:
Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 Gentlemen:
For your information, we are proceeding with the rev is ion to the in-s t allat io n speci fication 2BVS-931 and the appropriate engineering documents, field construction procedures and inspection plans to incorporate the sep a ra-t ion criteria submitted to the NRC with our letter 2NRC-6-081, dated June 4, 1985.
This revision contains the revised criteria fo r internal panel wiring separation as well as that fo r cable in raceway and in fr ee air (drop outs) external to panels. The separation requirement for electrical color separation within equipment to be included in the revisions to the appropriate documents are detailed in Attachment L.
We will be proceed ing with the implementation of this criteria based on the flow chart attachment I that was submi t ted to the NRC with our letter 2NRC-4-151 dated September 24, 1984 (attachment 2).
In o rde r to assist your rev iew of the results of the WYLE Test Report, we suggest that a meet ing be held with your rev iewe rs at your earliest c o n-veniencu.
This would pe rmi t complet ion of the case 3 c ons eq ue nt ial work effort as referenced in our (2NRC-4-151) September 24, 1984 letter.
DUQUESNE LIG1 COMPANY M@
By _
J' Carey Vice President JFK/ caw Attachment SUBSCRIBED AND SWORh TO BEFORE ME TilIS RO/JFK/NRC
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71 000 Nocury l'ubl P
ANITA ELAINE REITER, NOTARY PUBLIC ROBINSON TOWNSHIP, ALLEGHENY COUNTY kl a
.e United Stctes Nuclear Reguletory Connaission Mr. George W. Knighton, Chief cc:
Mr. R..DeYoung, Director (3) (1-w/a;'2-w/o)
Mr. B. K. Singh, Project Manager (w/a)
Mr. S. Ebnetter (w/a)
Mr J. Knox (w/a)
Mr. G. Walton, NRC Resident Inspector (w/a)
'1NPO Records Center (w/a)
NRC Docussent Control Desk (w/a)
COMMONWEALTH OF PENNSYLVANIA )
)
ss:
COUNTY OF ALLEGHENY
)
On this
/d/
day of
/ 9f(, before me, a
Notary Public in and for said Cdnu nwe"alth and County, personally appeared J.
J.
Carey, who being duly sworn, deposed and said that (1) he is Vice
[
. Pres ide nt of Duquesne Light, (2) he is duly authorized to execute and file the foregoing Submittal on behalf of 'said Company, and (3) the staternents aut forth in the Submittal are true and correct to the best of his knowledge.
1t 4
Notary Pullte i.
ANITA ELAINE REITER, NOTARY PUBLIC ROBINSON TOWNSHIP, ALLEGHENY COUNTY MY COMMISSION EXPIRES OCTOBER 20,1986 1
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4 ATTACHMENT 1 ELECTRICAL COLOR SEPARATION WITHIN EQUIPMENT
- 1. Low Voltage Equipinent la. The minimum separation distances between wire groups within Low 1
Voltage equipment are:
1.a.L 1 in between wire groups or l.a.2 1 in between wire groups and contacts or 1.a.3 6 in between contacts Ib. The following protection methods or combination of methods may be used to reduce the distance specified in Section la.
L.b.1 One wire group or contacts (A) protected as shown in (A) below when separated by distance (C) f rom wire group (B) as shown in (B) below.
Open wire groups are groups with no protection.
l l
WIRE GROUP (A)
DISTANCE (C)
WIRE GROUP'(B)
Preferred Method-Open 1"
Open Conduit
- 1" Open Conduit *
'0" Conduit
- Conduit
- 0" Wrap Preferred Method-Wrap 0"
Wrap No future conduit installation is anticipated.
Any conduit presently installed 'and analyzed will be left as is.
L.b.2 One wire group or contacts separated from another wire group or contacts by a barrier may have the total distance between wire groups reduced to 1 inch plus the thickness - of the barrier.
If either group, separated by a barrier, is enclosed in a wrap or conduit, the distance between the groups and the barrier can be reduced to 0 inches.
(The non-enclos ed group may touch the barrier and the enclosed group may also touch the barrier.)
j NOTE:
Barriers shall extend a minimum of 1 inch beyond l
exposed terminals and shall be designed of with l
s u f ficient strength to withstand misusu of testing
[
equipment and maintenance tools.
Barriers less than 1 inch 'from terminals shall' be nonconducting, seismically supported, i
4
Attechment L 2. Medium Voltage Equipment 2a. The minimum separation distances between wire groups within medium volt age equipment are:
2.a.1 6 in between wire groups or 2.a.2 6 in between wire groups and contacts or 2.a.3 6 in between contacts.
2b. The following protection methods or combination of methods umy be used to reduce the distance specified in Section 2.a.
2.b.l. One group or contacts (A) protected as shown in (A) below when separated by distance (D) from wire group (B) as shown in (B) below.
Open wire groups are groups with no protec-tion.
WIRE GROUP (A)
DISTANCE (D)
WIRE GROUP (B)
Preferred Method-Open 6"
Open Conduit Method
- 1" Open Preferred Method-Wrap Conduit
- 1" Conduit
- No future conduit installation is anticipated.
Any coadult as is.
presently installed and analyzed will be left 2.b.2 One wire group or contacts separated from another wire group or contacts by a barrier may have the total distance between wire groups reduced to 1 inch plus the thickness of the barrier.
NOTE:
Barriers shall ext end a minimum of L inen beyo nd exposed t e rminals and shall be designed of with suf-f icient strength to withstand misuses of tes t ing equipment and maintenance tools terminals shall be nonconducting, seismically supported.
- 4. Where wire groups are not adequately separated and a solution as out-lined in 1 and 2 above is not pa s s ib le.
The Contractor shall request Engineering authorization prior to termination.
- 5. The color group of internal wiring is determined by the external cable connecting with or as an extension to it.
Wirtng diagrams should be used for making this determination.
In case of dif ficulty in deter-mining the group color of the wire group for internal wiring the engin-eer should be requested to provide resolution.
o,'.
- e 9
" CASEI
- M
- CASE l* CONSEOLENTIAL WORK SCHE 0uLE START CUTSIDE wAtm00eN OF PANELS CONSEQUENTIAL work FOR SEPARATION SCOPE G SCHEDULE
- MANMOLES l$
PR00LEWS S*SS 0 10 84 S.lS.84 1
f F
DISCUSS " CASE 2" OISCUSS TEST PROGRAW CONSEQUENTIAL WORM L EXPECTED RESULTS DETAILS wlTM NRC wtTN NRC S*26*8 3 S*26 84 h
h INCORPOR ATE NRC 6NCORPORATE NRC COMMENTS IN COwWENTS IN T EST PROGR AM DETAILS AMENO h
FSAR PERFORM TESTING
'I START II l te "CA S E 2*
END 12 30-44 DEVELOP SOLUTIONS CONSEQUptTIAL WORK FOR SEPARAfl0N SCOPE G SCHEDULE g
PROSLEWS FOUNO IN y
10 - 84 PANELS FINAL TEST REPORT l
2 28*SS TlWE h
ISSUE REwCRM CONSEQUENTi&L RguAiNiNO q$
wCR4 GRE ATER THAN y
OtSCUSS REPORT RESuLTS 12 15 4 SCHEDULE REQUIREMENTS L REDUCTION OF CONSEQ FOR CASE 2 woRs wiTM NRC lurt,EWENTAT10N
$ eS A01 S 6S ll INCORPOR AT E NRC N
COMMENTSIN OETAILS S*OS tuPLEWENT CASE 2 SCOPE OF e===
CONSEQUENTI AL wCRM BASECON TEST Q NRC N
WEETING CEC 10E ON IMPLEMENTATION OF TEST RE SULTS T
AMENO
, g FSAR
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" CASES
IMPLEMENT CASE S CONSEQUENTI AL WOR m i
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'Af 4 2 TsT. 41 Nuclear Construction Division
)9 60 Robinson Pfare. Buildan0 2, Suite 210 Telecopy (412) TsT 2629 Pittsburgh, PA 15205 September,24, 1984 United States Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Mr. George W. Knighton, Chief Licensing Branch 3 Of fice of Nuclear Reactor Regulation
SUBJECT:
Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 Electrical Separation R.G.1.75 Information Centlemen:
The status of the BVPS-2 program to achieve compliance with its commitment to Regulatory Culde 1.75 Rev. 2 and IEEE-384-74 was presented to the NRC during a site meeting on August 30, 1984 Copies of the conference notes and presentation slides were submitted to the NRC with our letter 2NRC-4-143 dated September 14, 1984.
During the August 30 meeting, NRC representatives requested a des-cription of the relationship between our implementation scope and plan fo r consequential work and future test program results, future licensing (FSAR) submittals and future walkdowns of electrical separation within panels.
The attached flow chart (Attachment 1) has been developed to identify the rela-tionships among these' four (4) ef forts.
It should be noted, as shown on Attachment 1, that " Case 1" is the consequential work scope and schedule that was discussed at our August 30, 1984 meeting and was included in our September 14, 1984 submittal.
Case 1 is based upon the consequential work details 1983 meeting.
presented during our December 20,
" Case 2" consequential work scope and schedule, as shown on Attach-1, will be ment based upon implementation of the additional types of conse-quential work details that have already been found acceptable to the NRC.
" Case 3" consequential work scope and schedule, as shown on Attach-1, will be ment based on test results that substantiate the bases for NRC acceptance of further reductions in the quantity of consequential work.
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o, United States Nuclear Regulatory Commission Mr. George W. Knighton, Chief Page 2 l.
Since we have already established that Case 1 can be accommodated within the existing plant sch edule, and since Cases 2 and 3 will reduce the quantity of consequential work required to be performed, we believe that the attached flow cart describes a positive sys t em for resolution of the elec-trical separation issue that is in our mutual best interest to complete.
DUQUESNE LIGHT COMPANY By E. 3. Woolever Vice President HMS/nml Attachment cc:
Mr. C. Anderson, Region 1 (3) (w/ attachment)
Mr. J. Knox (w/ attachment)
Ms. M. Ley, Project Manager (w/ attachment)
Mr. G. Walton, Resident Inspector (w/ attachment)
COMMONWEALTH OF PENNSYLVANIA )
)
SS:
COUNTY OF ALLEGHENY
)
On this,)
_ day of
(([
, before me, a
~
Notary Public in and for said Commo/nwealth and County, personally appeared E. J. Woolever, who being duly sworn, deposed and said that (1) he is Vice Pres ident of Duquesne Light, (2) he is duly authorized to execute and file the foregoing Submittal on behalf of said Company, and (3) the statements set forth in the Submittal are true and correct to the best of his knowledge,
^
4ptd u
Notary Public ANITA ELAlf4E REiTER, NOTARY PUDLIC RODINSON TOWtlSHIP, ALLEGHEflY COUNTY MY COMMISSION EXPIRES OCTOBER 20,1986
s ',.
l United States Nuclear Regulatory Commission i
Mr. George W. Knighton, Chief 7
Page 3 HMS/nul NR/NRC/ REG /175 Attachment i
bec:
W. T. Wardzinski (w/o/ attachment)
C. E. Ewing T. D. Jones R. E. Dougher E. F. Kurtz, Jr.
J. H. Latshaw T. P. Noonan J. A. Rocco H. M. Siegel R. J. Swiderski G. L. Beatty E. T. Ellmann K. M. Holcomb J. F. Konkus J. Lee, Esq.
R. E. Martin S. L. Fernick, Jr T. J. Zogimann D. E. Burke (CEI)
R. G. Schuerger (CEI)
E. A. Licitra (NRC)
G. Walton (NRC)
W. T. Keller (NUTEC)
B. M. Miller (2) (OEC)
J. Silberg (SPPT)
D. Chamberlain (S&W)
T. J. Lex (W)
J. J. Carey~
(w/at tachment)
E. J. Woolever J. A. Hultz P. RaySircar (S&W)
C. R. Bishop (S&W)
NCD File i
l 1