ML20041D312
| ML20041D312 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 02/22/1982 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| References | |
| NUDOCS 8203050196 | |
| Download: ML20041D312 (7) | |
Text
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'B FEB 2 2 1982 DISTRIBUTION:
Docket File F. Rosa LB#2 File R. Capra DEsenhut/RPurpleT. Zimmerman,ANL RTedesco E S ket Nos."504440/441 4 ASchwencer bcc: TERA
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JStefario NSIC EHylton NRC PDR Thessin, OELD 1pcaL_PDR ACRS_ (l'6)x ffr. Dalwyn R. Davidson 01&g g
Vice President Region III ff
'9 System Engineering & Construction Resident Inspec r;'
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The Cleveland Electric Illuminating Company
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P. O. Box 5000 RMattson
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Dear Mr. Davidson:
RHartfield, MP O Gs. dY J. Mauck
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SUBJECT:
Perry Nuclear Power Plant, Units 1 & 2: Request for ' ditional -[
Information - Instrumentation & Control 4
As a result of our review of your application for licenses for the Perry Nuclear Power Plant, we have need for additional information related to plant instrumentation and control.
Enclosure (1) contains the list of additional information required, and an agenda for a meeting to discuss them.
It is suggested that the meeting be held at the Gilbert Associates facilities in Reading, Fm.nsylvania. !!. J. Mauch (ICSB) will represent the Commission at the meeting.
Please advise the Commission project manager assigned to Perry when such a meeting can take place, within seven (7) days after receipt of this letter.
Sincerely, A. Schwencer, Chief Licensing Branch t!o. 2 Division of Licensing
Enclosure:
As stated cc: See next page l
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m Mr. Dalwyn R. Davidson Vice President, Engineering The Cleveland ~ Electric Illuminating Company j
P. O. Box 5000 Cleveland, Ohio 44101 cc: Gerald Charnoff, Esq.
Shaw, Pittman, Potts & Trowbridge 1800 M Street, N. W.
Washington, D. C. 20006 Donald H. Hauser, Esq.
The Cleveland Electric Illuminating Company P. O. Box 5000 Cleveland, Ohio 44101 Resident Inspector's Office U.S.N.R.C.
Pannly at Center Road Perry, Ohio 44081 Donald' T. Ezzone, Esq.
Assistant Prosecuting Attorney 105 Main Street Lake County Adninistration Center Painesville, Ohio 44077 Tod J. Kenney 228 South College, Apt. A Bowling Green, Ohio 43402 Daniel D. Wilt Wegman, Hesiler & Vanderberg 7301 Chippewa Road, Suite 102 Brecksville, Ohio 44141 Robert Alexander CCRE Interim Representative 2030 Portsmouth Street Suite 2 Houston Texas 77098 Terry. Lodge, Esq.
915 Spitzer Building Toledo, Ohio 43604 -
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PROPOSED AGENDA FOR MEETING WITH PEP.P.Y APPLICA"T ON INSTRU!iENTATION A!!D CollTROLS, Following is a list of additional items for discussion at a meeting 4
with the applicant to provide the NRC staff with information required to understand the design bases and design implementation for the instrumentation and control systems on the Perry project.
The applicant should be prepared to use detailed instrument, control, and fluid system schematics at the meeting in explaining system designs and to provide verification that design bases and regulatory criteria are met.
During the meeting, specific items requiring additional documentation in the FSAR will be identified. Several items where additional documentation is likely to be required are included in the list which follows.
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421.55 The following questions relete to the instremer.tatic.; and cc.itreir #c-the Energency Service Water (IT.l} Iystan and the Emergency Closad C:: ling Water Syr, tem (ECCWS):
(a) Provide a list of the signals that automatically initiate each of the ESW loops and each of the ECCWS loops for each unit.
Clearly identify those cases'where signals from one unit are used to initiate operation of components of the other unit.
(b) According to the discussion in FSAR Section 7.3.1.1.6c, following a LOCA signal from either Unit 1 or Unit 2, the Unit 1 ECCUS loops are activated to provide cooling water to the control complex chillers.
Illustrate, by means of drawings, how the initiation signals from the two separate units are tied together into the Unit 1 ECCWS control circuitry. Also, discuss the power sources provided for s
the Unit 1 ECCWS when Unit 1 is shut cown.
(c) With the exception of the HPCS room cooler, all of the branches in
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each of the three ESW loops are provided with flow indication and alarm circuitry in the control room.
The flow element provided for the HPCS rocm cooler apparently has only two pressure test connections and is used only for initial flow balancing in the C loop (See FSAR page 9.2-15).
Discuss how the operator is alerted to any maifunctioning of the HPCS room cooler when the HPCS System is activated.
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. (d) Many of the components cooled by the ECCWS (i.e., RhR r00m coolers and RHR pump seals) have only local temperature monitors and flow' elements" with pressure test points located on the discharge side.
No temperature or flow indicationc or alarms are provided in the control room.
Discuss how an operator is alerted to a malfunction in any of the ECCWS cooling branches.
(s)
In the review of the drawings for the ECCWS (system P42) and the ESW System (system P45), it was noted that the drawing list was far from complete.
For example, in the ECCWS, no drawings were provided or listed for the flow controls located on the discharge of the control complex chillers; also, no drawings were identified for the surge
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s tank level instrumentation.
In the ESW System, no drawings were provided.or listed for the RHR heat exchanger flow and temperature instrumenta tion.
Discuss the present design status of the instru-mentation and control circuitry provided for the ECCWS and the i
ESW System.
(f) The p&I diagrams for the ESW System are shown on Figure 9.2-1, sheets 1 thru 4 of the FSAR. All sheets are labeled as Unit 1.
Should sheets 3 and 4 be labeled as Unit 2? If so, correct according'ly.
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(g) State whether or not the instrumentation and control circuitry provided for the ECCWS and the ESW System conform to all of the rcquirements of IEEE Standard 279.
Identify all exceptions.
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'22.66 Justify having a level transmitter on only one of the two RHR heat exchangers for the RHR steam condensing mode.
Is this level trans-mitter provided with a condensir.g pot to accommodate steam condensing?
421.67 The third paragraph on Page 7.2-3 of the FSAR refers to Figure 7.6-6 as showing the eight NMS logics associated with the RPS. However, Figure 7.6-6 actually shows the power range monitor detector assembly location.
Provide the appropriate figure and change the figure number accordingly.
421.68 Discuss the interlocking requirements that must be satisfied before s
the operator can manually initiate the suppression pool cooling mode
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of the RHRS.
421.69 Discuss the suppression pool temperature monitoring instrumentation.
State whether visual or audible alarms are provided to alert the operator if the pool temperature exceeds the limit required for initiation of the suppression pool cooling mode.
No such alarms are shown on Sheet 4 of Figure 7.3-5.
421.70 According to Page 5.4-43 of the FSAR, the steam condensing mode of the RHRS is considered part of the ECCS.
However, no discussion of this mode of operation was found in Section 7.3.
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4-discussion describing the operation of the steam condensing mode.
Include in the discussion how the system is initiated and the interlock requirements.
421.71 The following questions relate to the Drywell Vacuum Relief System discussed in Section 7.3.1.1.14:
(a) Page 6.2-96 references Section 3.8.3 for more information on the Drywell Vacuum Relief System. No discussion on this system was found in Section 3.8.3.
Resolve this discrepancy.
(b)
In comparing the P& ids for the Hydrogen Mixing System s
(D-302-831, Figure 6.2-62) and the Drywell Vacuum Relief System (D-912-606), the motor-operated valves on the two' drawings appear to have the same identication number (MCV F010A and MCV F010B); however, the check valves in series with these valves have different numbers.
Resolve this apparent discrepancy.
(c)
In the di.scussion on system operation (Page 7.3-43), the statement is made that the valves close automatically on a containment isolation signal.
However, examination of the logic on Figure 7.3-12 reveals that this is not the case if the manual control switch is in the open position. Using Figure 7.3-12 as a reference, provide a more detailed dis-cussion concerning the operation of the drywell vacuum relief system.
Resolve the apparent discrepancy mentioned.above.
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