ML20036B452
| ML20036B452 | |
| Person / Time | |
|---|---|
| Issue date: | 07/01/1991 |
| From: | Wenzinger E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | AFFILIATION NOT ASSIGNED |
| Shared Package | |
| ML20036A053 | List:
|
| References | |
| FOIA-92-162 NUDOCS 9305200139 | |
| Download: ML20036B452 (5) | |
Text
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i s ~,,r, UNITED 5T ATES f
NUCLEAR REGULATORY COMMISSION l
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KING OF FRUS$tA. PENNSYLV ANtA 1%% 14t$
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JUL 01 BM you provided to us on June This letter refers to concerns thatalleging:
(1) that various 1
12th, 13th, 17th, and 28th, 1991, radiation nonitorr do i
l design docunents for the wiring of plant not reflect actual plant conditions and (2) an undocunent ec i
j lifted lead in Control Rocn Panel RCl4C.
Utilities staff l
initiated action to have tne Northeastissues as we intend
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We have Attached are the l
review the above concerns.
We will inforn you of l
to characterize then to the licensee.
l their review findings.
or if I can be of further l
Sheuld you have any further questions,please call ne collect at(215) 337-i in these regards, assistance 5225 Sincerely, I
m
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t Ch ef y owarc Henzinger, Ich 4 Reactor Projects Attachnents: As stated bcc:
Allegation Files, RI-91-A-0143 J.
Stewart l
l T.
Shedlesky W.
Raynend L
E. Kelly IrdormaV03 in this retard v;?.s t't:clcf in accordante mih the freedom cf iniormation ACI. excmptians _/M 7 C 9305200139 930216 6f i
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ENCLOSURE Issue 1 The electrical circuit for radiation monitor RM 8132 (Stack Sample Fan 41B) is improperly wired.
Plant documents (Drawings 25203-32022, sht. 16 and 25203-39092, sht. 7) and I
l 2-90-032 fail to the documents associated with PDCE conditions.
The improper adequately describe as built plant wiring is associated with the sample fan control circuit, and may not have been documented during installation of safety tags to support PDCE 2-90-032, when 60 volts were terminal boards.
found to be present at 9 terminals on 2 Issue 2 A radiation monitor power wiring diagram (Drawing 25203-14B) is marked up with drawing / installation 39092, sht.
discrepancies, as is a print of radiation monitor connections.
Issue 3 Drawing 25203-31175, sht. 102, for wiring T497 between RC-14 and RM 8132 is in error.
Issue 4 An undocumented lifted lead exists in Panel RC14C in the
[The lead is from Control Room Panel C101 to Control Room.
Control Room Panel RC14C, and should have been attached to location 8.
The automatic isolation and terminal block T6, purge of the normal range ventilation exhaust radiation monitor (RM 8132), by an isolation signal from the extended is disabled when this lead is range monitor (RM B168),
The isolation feature is not checked.during lifted.)
channel functional or calibration tests.
Request If Please determine the validity of the above assertions.
any deficiencies in equipment wiring or station drawings are found, please notify us of the corrective actions you have Please provide us with an assessment of the taken.
significance with regard to safety of any identified deficiencies.
7 n atc
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'o, UNITED ST ATES c
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r NUCLEAR REGULATORY COMMISSION l
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REGION 3'
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475 ALLENDALE ROAD I
KING OF PRUS$lA. PENNSYLVANIA 19 06-1415
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dDL 01133) 1 This letter refers to concerns that you provided to us on June 12th, 13th, 17th, and 28th, 1991, alleging:
(1) that various l
radiation monitors do design documents for the wiring of plant not reflect actual plant conditions and (2) an undocumented lifted lead in Control Room Panel RC14C.
l We have initiated action to have the Northeast Utilities staff intend Attached are the issues as we review the above concerns.
We will inform you of to characterize them to the licensee.
their review findings.
or if I can be of further Should you have any further questions,please call me collect at (215) 337-assistance in these regards, 5225 Sincerely,
/
,NW Eowar Wenzinger, Ch'ef Reactor Projects ch 4 l
Attachments: As stated s
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bec:
Allegation Files, RI-91-A-01t3
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3.
Stewart T.
Shedlosky l
W.
Raymond
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E. Kelly i
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i hacima:icn in lis reccrd was defe.ed in accordance with the Freedom of inbrmation Act, excniations 67 7C j
F0!A-YE-/4 h t
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1 ENCLOSURE Issue 1 The electrical circuit for radiation monitor RM 8132 (Stack Sample Fan 41B) is improperly wired.
Plant documents
[
(Drawings 25203-32022, sht. 16 and 25203-39092, sht. 7) and the documents associated with PDCE 2-90-032 fail to adequately describe as built plant conditions.
The improper wiring is associated with the sample fan control circuit, and may not have been documented during installation of l
safety tags to support PDCE 2-90-032, when 60 volts were I
found to be present at 9 terminals on 2 terminal boards.
Issue 2 A radiation monitor power wiring diagram (Drawing 25203-39092, sht. 14 B) is marked up with drawing / installation discrepancies, as is a print of radiation monitor connections.
Issue 3 Drawing 25203-31175, sht. 102, for wiring T497 between RC-14 and RM 8132 is in error.
Issue 4 An undocumented lifted lead exists in Panel RC14C in the Control Room.
[The lead is from Control Room Panel C101 to Control Room Panel RC14C, and should have been attached to terminal block T6, location 8.
The automatic isolation and purge of the normal range ventilation exhaust radiation monitor (RM 8132), by an isolation signal from the extended range monitor (RM 8168), is disabled when this lead is lifted.)
The isolation feature is not checked during channel functional or calibration tests.
Request Please determine the validity of the above assertions.
If any deficiencies in equipment wiring or station drawings are found, please notify us of the corrective actions you have taken.
Please provide us with an assessment of the significance with regard to safety of any identified deficiencies.
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,}UL 0 1 1991 I
This letter refers to concerns that you provided to us on June 12th, 13th, 17th, and 28th, 1991, alleging:
(1) that various l
design documents for the wiring of plant radiation monitors do j
not reflect actual plant conditions and (2) an undocumented lifted lead in Control Room Panel RC14C.
i 4
We have initiated action to have the Northeast Utilities staff i
review the above concerns.
Attached are the issues as we intend to characterize them to the licensee.
We will inform you of their review findings.
1 Should you have any further questions, or if I can be of further assistance in these regards, please call me collect at (215) 337-5225
)
Sincerely, nric*m! Shred By Edward Wenzinger, Chief Reactor Projects Branch 4 1
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Attachments: As stated bec:
i Allegation Files, RI-91-A-0143 l
J.
Stewart i
T. Shedlosky I
W. Raymond E. Kelly concurrences:
RI:DRP RI:DRP P
Stewart K lly nger
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