ML20010B754
| ML20010B754 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 05/31/1981 |
| From: | Kountanis B EG&G, INC. |
| To: | Bender P, Wilson P Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20010B721 | List: |
| References | |
| CON-FIN-A-0250, CON-FIN-A-250 EGG-1183-4214, IEB-80-06, IEB-80-6, NUDOCS 8108170517 | |
| Download: ML20010B754 (6) | |
Text
EG G 118ll> 4 M9 4 MA 1989
[ ENERGY MEASUREMENTS GROUP EGsG TECHNICAL EV ALU ATION OF THE LICENSEE'S RESPONSE l
TO l&E BULLETIN 80-06 CONCERNING ESF RESET CONTROLS FOR THE ZION STATION, UNITS 1 AND 2 l
(DOCKET NOS. 50-295 AND 50-304)
S AN EAMCN OPER ATIC?
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INTERIM REPORT h:EGrG
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NRC TAC No.
42788 and 42789 l
EGG 1383-4214 Report No.
I Contract Program or Project
Title:
Electrical, Instrumentation', and' Control System Support 1
J' Subject of this Document:
Technical Evaluation of the Ltcenses's Response to ISE Bulletin 80-06 Conc ESF Reset Controls for the Zi6n 5tstion, Units 1 and 2 4
Type of Document:
Informal Report 2
Author (sh i
B Kountanis 4
i 1
Date of Document:
+
iday 19S1 4
Responsible NRC individual and NRC Office or Division:
P. Bencer/R. Wilson, ICSB I:
was ore:arec primarily for preliminary or in:ernal use.
6his cc:ument received full review anc a::reval.
Since :nere may te suestan:1ve nas no
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- $anges. :nis cocument shoule not ce consicered final.
1 EG&G Energy Measurements Grouc San Ramon Operatiens San Ramon, CA' 94583 Preparec for M.
U.S. Nuclear Regulato., Corxnission W'asnington, D.C.
'Jncer 00E Cqntrat: No. B&R 201904031 j
NRC FIN No. A0250 i
?
INTERIM REPORT
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ZGG 1181-8216 p:bOEU May' 1981 Q
Enorgy Mocouremonto Gr=up Son Rcmen Oporotians TECHNICAL EVALUATION OF THE LICENSEE'S RESPONSE TO I&E BULLETIN 80-06 CONCERNING ESF RESET CONTROLS FOR THE ZION STATION, UNITS 1 AND 2 r.
toccxET uc5 50-295 t.NO SC.304) by S. Kountanis Approvec for PuDiication
.t J. R. Racosev c Depar: gent Manager Tnis document is UNCLASSIFIED Derivative C1assifier: N4 /Mc,3 4.. /
Nicnoies i. brocericK
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Departmen: Manager Werk Perf orrnec f or Lawrence Levermere National Laboratory un ce r U.S. D e partment of Energy Centr act N o. CE ACCS-76 NVO 1183.
INTRODUCT]ON On Marcn 13, 1980, the USNRC Office of Inspection and Enforcement (I&E), issued I&E Bulletin Bu-06, entitled "Ergineered Safety Feature (ESf)
Controls," to all PER and BWR f acilities witn operating licenses.
Reset 1&E Bulletin 80. 06 requested, :nat :ne following actions be taken cy :ne licensees:
Review :ne drawings for all systems serving safety-(1) related functio'ns at :ne scnematic/ elementary diagram level to'.deterinine wne:ner or not upon :ne reset of an ESF act,uation signal all associated safety-related equipme~n: remains in its emergency mode.
(2)
Verify that the actual ins lied instrumentation and controls at the facility are consistent witn :ne schematics reviewed in Item 1 above by conducting a all equipment remains in its test to demonstrate tna emeroency mode upon. removal of :ne actuating signal and/or manual resetting of ne various isolating or actuation sicnals.
Provide a schedule for :ne per-formance of ' ne tesi.ing in your response to :nis eulletin.
remain in its (3)
If any saf ety-related equipment coes nc emergency mode upon reset of an ESF signal at your facility, describe proposec system modification, cesign change, or o:ner correc;ive action planned to
' resolve tne prooiem.
(4)
Repor: in writing witnin 90 days.ne results of your
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review, include a, list of all cevices wnicn respond as discussed in 1:ein 3 aoove, actions taken or plannec to assure adeauate equioment controt, and a scnedule for imolemer:etion of corrective action.
Inis tecnnical evalue ion accresses tne licensee's response to 1&E Bulletin 80-06 and :ne licensee's proposec system modification, cesign In enange, and/or c ner corrective action plannec to resolve tne eulletin, ne following NRC staff guidance is also used:
Voon tne rese: of ESF signsis, all safety-relatec ecuipmen:
snali remain in its emergency moce.
Multiple rese sequencing snali not cause Ine affectec equipment to deviate l
f rom its emergency 1moce.
Justification snoulc ce providec l
for any exceptions.
. l i.
l EVALUATION AND CONCLUSIONS In a letter dated June 10, 1980 [Ref.1], Commonwealtn Edison,
- ne licensee for Zion Station, Units 1 and 2, replied to I&E Sulle:in on Maren 3, 1981 -[Ref. 2), Ine 80-06.
In a telepnone conference call licensee provided clarification of ineir original response wnich was con-firmed by a letter dated Maren 10,1981 [Ref. 3).
In response to Act*,'on Item 1 of 1&E Bulletin 80-06, the licensee reported [Ref. 1] inat :ney nave completed tne review of all applicable schematic diagrams and nave found four systems in wnicn equipment may rese:
of safety injection.
We conclude j
to the preactuated position on'. a reset item 1 of
)
that the licensee has cdSplie'd witn the requirements of Action I&E Bulletin 80-06.
In response to Action Item 3 of 1&E Bulletin 80-06, tne licensee nas indicated [Ref. 3] :nat two systems nave been modified to comply witn 1&E Bulletin 80-06.
Tnese systems are:
(1)
Valve.0FCV-5W54 The licensee states :nat inij valve is tne service water strainer backwasn discharge valve.
It nas been it will remain in :ne actuated posi-mndified so tna tion.
Tne modification consists of a reset button wnicn has to be pusned to pick up a relay :na opens the valve.
Tnis can only be cone af ter Safety In-jection has been reset.
(2) valves 0FCV-CA105 and 0FCV-CA11B Tne licensee states na: :nese valves are for nypo-cnlohte injection into :ne service water system.
Since nyoocnlori;e is not used a Zion Sta: ion, tnese valves nave been'disconnectec.
Tnese modifications will assure :na: :ne valves will remain in
- ne emergency noce position upon ESF reset.
Tne licensee does not plan to make any modifications to Ine Tne licensee nas offered :ne following equipment in :ne other two systems.
justifications for tne systems icentified:
(1)
Valves 0A0V-5W0020 (Unit 1) and UA0V-5 WOO 21 (Uni2)
Tnese valves sucoly cooling water to room coolers and l
- ne ciesel containment spray pump engine for :neir respectiva ' units.
Actuation of :nese v.a l v e s is initiated by ei*ner of inree conditions wnicn cause
- ne RHR pumo to operate.
Inese valves open on 51,
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4 Containment Spray, or RHR pump operation and will not close until tne RHR pump is stopped.
Operation of tnese valves is automatic and tnere are no control switches for tne valves.
t e
i (2)
Containment Fan Cooler Dampers ine purpose, of ne containment fan cooler dampers is to insert a moisture separator in f ront of tne con-tainment f an cooler.
!!, and consequently, CVI, will i
position :ne dampers to include tne moisture separator and will reduce tne speed of tne f an.
After tne SI l
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signal clears,. tne dampers remain in :ne emergency position.- Ho#cver, wnen CVI is reset, tne dampers will re:01 n 'to their normal position (bypassing tne 5.
moisture separator) if tne control switen is in :ne normal p'osition.
Tne f an speed will not cnange.
If tne operator places ne control switch in tne accident position, as required by tne procedures, :ne dampers Tne licensee indica.es :nat no detri-will not move.
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mental ef f ects will occur if tne dampers enange posi;fon and bypass the moisture separator after SI and CVI reset.
1 i
We nave reviewed tne justifications submitted by :ne licensee to
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insure Ina: sufficient information is provided as a casts for NRC to pre-a pare a Safety Evaluation Report.
In response to Action 1:em 2 of I&E sulletin 80-05, :ne licensee
[
j indicates [Ref. 3) :nat ne testing on botn units (including modifica-j tions), nas seen completec and tnat all equipment stays in tne actuated position as expe<ted.
We conclude tna: Action Item 2 of I&E Bulletin 80,06 j_
1 nas been satisfied.
i We conclude inat in :ne licensee's response to Action 1: ems 1, 2 j
j and 3, iney nave complied witn Aci. ion 1:em 4 of 1&E Sulletin 80-06.
/
FINDINGS 4
. Based on our review of tne cocuments and information provicec oy i
tne licensee, we conclude na: :ne ESF rese: controls for Zion Station,.
l Units 1 and 2, meet the requirements of Action 1: ems 1, 2, and a of I&E l
In response to Action item 3 of I&E Bulle:in 80-05, :ne licensee nas offerec :ne
.nas mocifjeo two systems to c'omply witn :ne bulletin and justifications given in :ne previous section of :nis report for two systems m modifications or otner corrective actions.
in lieu of any syste.
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a REFERENCES 1.
Commonwealtn Edison letter (D.
L. Peoples) to NRC' (J. G. Keppler),
i
" Response to !&E Bulletin 80-05," cated June 10, 1980.
1 l
2.
Telephone conference call' NRC (P. Sender and D. Wigginton); Common-wealth Edison (T..Tramm and S. Clark); EG&G, San Remon (B. Kountanis and D. Kackett), March 3, 1981.
3.
Commonwealth Edi so'n le$ter (T. Tram) to NRC (H.
R.
Denton); "I&E s
Bulletin 80-06 Supplementil Information," dated Marcn 10, 1981.
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