ML19310A829
| ML19310A829 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 06/13/1980 |
| From: | Hines E DETROIT EDISON CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| References | |
| IEB-80-09, IEB-80-9, NUDOCS 8006300566 | |
| Download: ML19310A829 (6) | |
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Edwird Hines Ass sta-* v.cc Prescent osan y Ass.rance Detroit 333t W B Edison w.;BeavecMac w-June 13, 1980 EF2-49,337 Director Division of Reactor Construction Inspection Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Reference:
Enrico Fermi Power Plant, Unit 2 USNRC Licensing Docket:
50-341 USNRC IE Bulletin 80-09 (4-17-80)
Edison Memorandum EF2-49162 (5-29-80)
Subject:
Detroit Edison Response to NRC IE Bulletin 80-09
Dear Sir:
The enclosed Edison internal memorandum, EF2-49162 of May 29, 1980, is herein transmitted to you in response to IE Bulletin 80-09.
Should you require additional information from Edison it. this matter, please advise us.
Very truly yours,
EH/JDR/Im UM Enclosure cc:'d r. James G. Keppler Regional Director U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Director Division of Operating Reactors Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Director Division of Reactor Inspection Programs Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
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'l L.G ::aiI ENRICO FERMI UNIT 2 PROJECT ENGINEERING May 29, 1980 EF2 - 49162 To:
W. F. Colbert Project Engineer - EF2 318 Engineering Construction-Troy e
52 Q h From:
h ;I.-= t a c h Systeri'EnsTneer - EF2 318 Engineering Construction-Troy
References:
1.
NRC-IE Bulletin 80-09 2.
EF2 - 48922, April 15, 1980 3.
Letter to Sargent & Lundy from Mcc Powers (J. Hartgenbush) May 14, 1980 Subj ect:
ITT Hydramotor Actuator Deficiencies NRC IE Bulletin 80-09 identifies deficiencies involving ITT Cencral Controls Models AH-90 and N3-90 Hydramotor Actuators that find the ac,tual force output of these actuators to be below their design ratings.This was because the design ratings for these actuators did not take into account frictional and hydraulic resistance losses, and spring defects.
IE Bulletin 80-09 calls for nuclear units under construction to deter-mine whether these particular model actuators are to be used with any safety related system or component. Where such applientions are found, the actuator size selection is to be reevaluated to determine if the proper reduced rating is suitable.
Equipment qualification Preoperational test programs,jas necessary, are to be modified to demonstrate the functional adequacy of these actuators.
44 BH-90 ITT Hydramotor Actuato'rs have been installed at Fermi 2.
All of these actuators have been installed to drive dampers on the RHR Complex ventilation system.
Table 1 identifics these dampers.
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Memo to:
May 29, 1980
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W. F. Colbert EF2 - 49162 Sargent & Lundy has reviewed the size selection of these actuators with Powers Regulator Company.
They have found in all applications, that there -is sufficient margin in the size selection for the actua-tors at their actual reduced capacity to meet the operating force requirements of each damper. Therefore, this review has found no need to replace any of the existing actuators.
(See Reference 3).
Present startup preoperational test procedures PRET X4103.001,.002 and.003 calls for functional testing of each of these dampers.
These tests are designed to detect any deficiencies in the operation of these dampers under actual operating conditions.
Prior to this, these dampers will be stroked during " checkout and initial operation testing" which can detect obvious deficiencies prior to actual system operation. Also, prior to preoperational testing, ventilation flow bal'ancing will be performed which also requires the operation of these dampers, under operating conditions.
The present preoperational testing program is sufficient to demon-strate the functional adequacy of these Hydra =otor Actuators without requiring any modification to the test program.
However, by copy of this memo, the responsible startup test engineer will be informed of the concern with these type actuators and is requested to give added attention to these dampers listed in Table 1 during the pre-operational testing of the RHR Complex Ventilation System.
FJL/dk Attach.
cc:
T. Barnes J. Tibal R. S. Lenart Document Control 9
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7 TABLE 1 RHR DAMPERS WITH ITT-66 MODEL NH-90 HYDRAMOTOR ACTUATORS DAMPER - NUMBER SERVICE X4103 - F103 EDG 11 Switchgear Room Ventilation Outdoor Inlet Damper X4103 - F104 EDG 11 Switchgear Room Ventilation Return Damper X4103 - F106 EDG 11 Switchgear Room Ventilation N. Fan Discharge Damp, X4103 - F108 EDG 11 Switchgear Room Ventilation S. Fcn Discharge Damp, X4103 - F109 EDG 11 Switchgear Room Ventilation Exhaust Damper X4103 - F110 EDG 11 CO St rage Room Ventilation Inlet Damper 2
X410{-F115 EDG 12 Switchgear Room Ventilation Outdoor Inlet Damper X4103 - F116 EDG 12 Svitchgear Room Ventilation Return Damper X4103 - F118 EDG 12 Switchgear Room Ventilation N. Fan Discharge Damp.
X4103 - F120 EDG 12 Switchgear Room Ventilation S. Fan Discharge Dampo X4103 - F121 EDG 12 Switchgear Room Ventilation Exhaust Damper X4103 - F122 EDG 12 CO St rage Room Ventilation Inlet Damper 2
X4103 - F127 EDG 13 Switchgear Room Ventilation Outdoor Inlet Damper X4103 - F128 EDG 13 Switchgear Room Ventilation Return Damper X4103 - F130 EDG 13 Switchgear Room Ventilation N. Fan Discharge Damp.
X4103 - F132 EDG 13 Switchgear Room Ventilation S. Fan Discharge Damp, X4103 - F133 EDG 13 Switchgear Room Exhaust Damper X4103 - F134 EDG 13 CO Room Ventilation Inlet Damper 2
X4103 - F139 EDG 14 Switchgear Room Ventilation Outdoor Inlet Damper X4103 - F140 EDG 14 Switchgear Room Ventilation Return Damper X4103 - F142 EDG 14 Switchgear Room Ventilation N. Fan Discharge Dampi X4103 - F144 EDG 14 Switchgear Room Ventilation S. Fan Discharge Dampi X4103 - F145 EDG 14 Switchgear Room Ventilation Exhaust Damper X4103 - F146 EDG 14 CO x m Ventilation Inlet Damper 2
X4103 - F149 A&B EDG 11 Diesel Generator Room Ventilation Outdoor Inlet Damper X4103 - F149 C&D X4103 - F150 EDG 11 Diesel Generator Room Ventilation Return Damper X4103 - F151 A&B EDG 12 Diesel Generator. Room Ventilation Outdoor Inlet X4103 - F151 C&D Damper X4103 - F152 EDG 12 Diesel Generator Room Ventilation Return Damper
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{ DAMPER - NUMBER SERVICE X4103 - F153 A&B EDG 13 Diesel Generator Room Ventilation Outdoor Inlet Damper X4103 - F153 C&D X4103 - F154 EDG 13 Diesel Generator Room Ventilation Return Damper X4103 - F155 A&B EDG 14 Diesel Generator Room Ventilation Outdoor Inlet Damper X4103 - F155 C&D X4103 - F156 EDG 14 Diesel Generator Room Ventilation Return Damper X4103 - F157 Div. I ? ump Room Ventilation Outdoor Inlet Damper X4103 - F159 Div. I Pump Room Ventilation N. Fan Discharge Damper X4103 - F161 Div. I Pump Room Ventilation G. Fan Discharge Damper X4103 - F162 Div. I Pump Room Ventilation Return Damper X4103 - F164 Div 11 Pump Room Ventilation Outdoor Inlet Damper X4103 - F166 Div II Pump Room Ventilation N. Fan Discharge Damper X4103 - F168 Div II Pump Room Ventilation S. Fan Discharge Damper X4103 - F169 Div II Pump Room Ventilation Return Damper F. J. Locke
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Sargent & Lundy Engineers p p,.,q,_
55 East Monroe Street Chicago, Illinois 60603 Attention:
Mr. R. K. Aggarwal i
Subject:
S&L Project No. 5285-14
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Reference:
/ SLM _124_3' with IE Fulletin 80-09'Ittachment e
Gentlem6n:
As requested in your letter; the actuatids~used for the Fermi i2 RiiR cgmp, lex, da:5pers_ have be_ein_ riv_iefed.
ITTi'ght of the def.tclencies noted in the IE Bulletin 80-09, the torque available for damper operation still exceeds the 1.5 factor required per ERDA-76-21, Section 5.3.4.
Actually, the lowest safety factor is 2.1 for the Fermi RHR actuators.
The above data is based on review of the design data available at MCC Powers.
Due to circumstances existing at the time, Powers incorporated a significantly increased safety factor; so the actuator order could be placed.
Also MCC Powers hasl requested detailed technical information from ITT - General Controls regarding this problem.
To date, we've not received any response.
In summary, in reviewin'g the deficiencies stated, the only effect is a reduction of what still is an excessive safety factor.
Sincerc1,
7 MCC POWERS.
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MCC POWERG A UNIT CF M' ARK. CONTROLS COAPORATION 5440 West F argo Ave. Ss &c. lL 6C0 7 7. I312; S 7 7-9580
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