ML20107H526
See also: IR 05000219/1975013
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IE I Ybre 12
(Jan 75) (Rev)
U. S. NUCLEAR REGUIATORY CCHMISSION
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OFFICE OF INSPECTION AND ENFORCEMENT
REGION I
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IE Inspection Report No:
50-219/75-13
Docket No: J0-219
Licensee: Jersey Central Power and Light Company
License No: DPR-16
Madison Avenue at Punch Bowl Road
Priority:
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Morristown, New Jersey
07960
Category:
C
Safeguards
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Group:
em
Location: Oyster Creek, Forked River, New Jersey
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Type of Licensee:
1930 MWt, BWR
Type of Inspection:
Special, Announced
Dates of Inspection: May 5-7,
1975
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Dates of Previous Inspection:
April 28-May 1,
1975
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Reporting Inspector:
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K.
W. Plumlee, React'or' Inspector
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Accompanying Inspectors:
None
DATE
DATE
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DATE
@ther Accompanying Personnel:
None
DATE
Reviewed By:
M.
L [&)
f/20[75'
DATE
Hayn/s,Sc'niorleac' tor Inspector
R.
C.
9604240154 960213
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DEKOK95-250
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SUMMARY OF FINDINGS
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Enforcement Accion
A.
Items of Noncompliance
None
B.
Deviations
None
Licensee Action on Previously Identified Enforcement Items
Not applicable
Design Changes
None Identified
Unusual Occurrences
None Identified
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Other Significant Findings
A.
Current Findings
1.
Acceptable Areas
Correlation Between the Facility's Requirements and the As-Built
Status of Fire Stops on Safety-Related Electrical Cables and
Penetration Seals
A visual examination was performed of fire barriers and com-
partment boundary penetration seals for safety-related elec-
trical cables. The observed construction of these items cor-
related with the documented requirements for this facility.
(Details, Paragraph 3)
2.
Unresolved Items
a.
Invokement of Facility Requirements for Fire Stops on
Electrical Safety-Related Cables and Penetration Seals in
Maintenance and Modification Procedures
An examination was made of the licensee's documented ,
policies and procedures for maintenance and modification
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of fire stops on safety-related electrical cables and
penetration seals. The licensee is currently reviewing
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these and will inform IE:I by June 1, 1975 of the results
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of current efforts.
(Details, Paragraph 5)
b.
Specific Areas of Concern re: Penetration Sealing
The following items are unresolved *:
(1) Cable routing
(2) Combustible seal material
(3) Fire retardant coating
(4) Battery room cable run
(5) Fire stops, seals and closures of penetrations in
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turbine building, equipment building, and reactor
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building interior walls and floors.
B.
Status of Previously Reported Unresolved Items
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Not inspected
Management Interview
At the conclusion of the inspection the inspector held a meeting at the
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site with the following personnel to discuss the inspection findings-
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Jersey Central Power & Light Company
D. A. RossAs Manager Generating Stations - Nuclear
J. T. Carroll, Station Superintendent
D. L. Reeves, Chief Engineer
E. I. Riggle, Maintenance Supervisor
The following items were discussed and the inspector's findings were
acknowledged by the licensee:
A.
Purpose of the Inspection
The inspector stated that the purpose of this inspection was to
examine the documented facility requirements for fire stops on
safety-related cables and penetration seals, to visually inspect
these items for conformance with the requirements, to examine the
licensee's provisions for invoking the requirements during maintenance
and modification work and to determine the status of the licensee's
efforts with respect to the actions listed in IE Bulletins 75-04
and 75-04A.
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- Details, Paragraph 4
- Participated by telephone conference circuit
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Current Fit _d!.ngs: Acceptable Areas
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1.
Corre}ntion Between' the Facility's Requirements and As-Built Status
for Fire Stops on Electrical Safety-Related Cables and Penetrati.on
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. Seals
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A visual examination was performed of fire barriers and compart-
ment boundary penetration seals for safety-related electrical
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cables. The observed construction of these items correlated
with the documented requirements for this facility.- (Details,
Paragraph 3)
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C.
Unresolved Items
1.
Invokement of Facility Requirements for Fire Stops on Electrical
Safety-Related Cables and Penetration Seals in Maintenance and
Modification Procedures
1,
An examination was made or .ne licensee's documented policies
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and maintenance and modification procedures for fire stops on
safety-related electrical cables and penetration seals. The
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licensee is currently reviewing these matters and will inform
IE:I by June 1, 1975 of the results of current efforts.
(Details,
Paragraph 5)
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2.
Specific Areas of' Concern re Penetration-Sealing
The following items are unresolved *:
a.
Cable routing
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b.
Combustible seal material
c.
Fire retardant coating
d.
Battery room cable run
Fire stops, seals and closures of penetrations in turbine
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building, equipment building, and reactor building interior
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walls and floors.
D.
Status of Licensee's Efforts re IE Bulletins 75-04 and 75-04A
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The licensee's follow-up to IE Bulletins 75-04 and 75-04A includes
the development of procedure preparation guidelines and certain pro-
cedures and possibly the installation of a fire suppression system.
(Details, Paragraph 6)
- Details,. Paragraph 4
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DETAILS
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1.
Persons Contacted
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Jersey Central Power & Light Company
J. T. Carroll, Station Superintendent
D. Reeves, Chief Engineer
W. Riggle, Maintenance Supervisor
D. VanNortwick, Plant Electrician B
2.
General
a.
Plant Status
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The plant was in a refueling outage during this inspection.
b.
Purpose of Inspection
The purpose of this inspection was to examine the documented
facility requirements for fire stops on safety-related cables
and penetration seals, to visually inspect these items for
conformance with the requirements, to examine the licensee's
provisions for invoking the requirements during maintenance
and modification work and to determine the status of the
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licensee's efforts with respect to the actions listed in
IE Bulletins 75-04 and 75-04A.
3.
Correlation Between the Facility's Requirements and As-Built Status
for Fire Stops on Safety-Related Electrical Cables and Penetration
Seals
a.
Requirements on Cables and Penetrations
(1) FSAR and Technical Specification Requirements
Scaled penetrations are required for containment integrity
in the reactor building (secondary containment) walls.
Isolation required for 4160 volt dual emergency circuits
includes a firewall between the switchgear; physical
separation of bus sections, feeders, power centers and motor
control centers; and enclosure of feeders to vital equipment
in rigid steel conduit.
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(2) Other Requirements
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Insulation on power cables and control cables was stated-
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to be self-extinguishing material (either GE VULKENE or
FLAMINOL' brand).
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b.
Observations
-(1) Acceptable Areas
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Visual examination of the electrical cable trays, conduits
and penetration seals. verified the correlation between as-
built construction and the above requirements, as follows:
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Control room floor penetrations were examined, and 769*
appeared to be sealed. Two others were found not sealed
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and the licensee sealed them before the completion of the
inspection.
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The licensee stated that nine others, that could not be
examined because of physical location, were sealed.
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Except for a few unused thimbles closed off by steel discs
and plastic bushings, the control room penetrations
appeared to be sealed by a (dry) mineral wool ** packing
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material.
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Reactor building (secondary containment) wall and roof
penetrations were examined. All 167*** ciectrical cable.
trays, conduits and spare thimble penetrations identified
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appeared to be sealed (described below).
The licensee
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stated that a typical cable trayrpenetration seal was:
(a)
(Original application) two injections were made
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(inner and outer seal) of pourable Kaowool which
hardened in place.
(b) Periodic leak testing and resealing resulted in the
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additional application of one or more of:
Pourable Kaowool or similar material
Dry packed Kaowool or similar mineral wool
Duxseal
Isofoam
Inspector's count.
- Knowool, manufactured by Babcock & Wilcox
- Inspector's count
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Inspection of t'ne 4160 volt ducts and switchgear verified
that isolation was provided as described by paragraph 3.'a. (1).
Inspection of the emergency diesel generator rooms and
cables verified that isolation was provided and there was
a concrete wall between the diesel generators and between
the two control panels.
Fire-fighting equipment was visible.
As an example a fire
hose and portable fire extinguishers were available near
the entrance to the cable room.
The lower bays of the turbine building were equipped with
automatic overhead sprinklers.
Insulation on power cables and control cables was examined
on a sampling basis and was identified as either GE VULKENE
or FLAMINOL, on e
.h sample.
4.
Specific Areas of Concern re Penetration Sealing
a.
Cable Routing
The inspector examined a combination storage / cable pulling room
containing 25 cable trays, 67 rigid conduits and 14 non-rigid *
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conduits. Areas connecting ** to this room included:
Main cable room (openings 5XS and 5X3 ft)
Pipe tunnel (opening 4X4 f t)
460 volt distribution room (opening 2X4 ft)
DC battery room (tunnel SX6 ft)
The main cable room also has openings to an equipment room above
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the control room (a pipe chase opening, 2X10 ft, partly filled
by ventilation ducts, conduits,' pipes, etc.) and to the turbine
building (nine cable trays through a corridor).
The inspector found that there were no cable-penetration fire
stc~
The licensee stated there was no requirement to provide
cable fire stops, or to close up or seal the above openings.
b.
Combustible Seal Material
The licensee's review of fire stops and seals following issuance
of IE Bulletins 75-04 and 75-04A apparently identified Isofoam
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- Greenfield type
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- Estimated sizes of openings follow
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as combustible. The licensee removed a piece of Isofoam from
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an electrical penetration seal.
It was ignited and burned
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completely.
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The licensee stated that the Isofoam was at most only-an inch
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or two thick and did.not extend from one side of the seal to
the other; thus propagation of fire through a seal was stated
to be unlikely,
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No test data were available that would substantiate the licensee's
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position on flame resistance of seals. The licensee stated that
there was no requirement to remove or coat over the Isofoam.
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c.
Fire Retardant Coating
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No fire retardant coating was evident and the licensee did not
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commit to apply such coatings to electrical cables or penetration
seals.
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d.
Battery Room Cable Run
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All electrical cables supplied from battery room DC distribution
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panels A and B are collected into a single cable tray.
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The licensee stated that the specifications do not require
isolation of these cables.
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e.
Fire Stops. Seals and Closures of Penetrations in Turbine Building,
Equipment Building, and-Reactor ~ Building Interior Walls and Floors
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-Turbine building,-equipment building and reactor building interior
wall and floor penetrations were examined where electrical cable
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trays, conduits and spare thimbles pass through. Typically, no
seal or closure of these penetrations was evident.
(No requirement
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was identified to seal or close the openings identified.)
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The above items a through e are considered to be unresolved pending
completion of the licensee's follow-up on IE Bulletin No.75-04A and a
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subsequent review of their actions by an NRC inspector.
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5.
Invokement'of Facility Requirements for Fire Stops on Electrical
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' Safety-Related Cables and Penetration Seals in Maintenance and
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Modification Procedures
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Job orders are used to initiate work on cables, fire stops and
penetration seals. The licensee's supervision controls the work to_
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be done, states what procedures are to be used, supervises work as
it progresses, and accepts the completed job.
However, no maintenance
or modification procedures for penetration seals were provided by the
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licensee.
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This item is considered to be unresolved pending completion of the
licensee's review of their procedures as a part of the licensee's
response to IE Bulletin No.75-04A (Details, Paragraph 6) and sub-
sequent review of their findings and actions by an NRC inspector.
6.
Status of Licensee's Efforts re IE Bulletins 75-04 and 75-04A
The licensee's reply * to IE Bulletins 75-04 and 75-04A described
their efforts on procedure preparation guidelines that specifically
address the concerns of Item 3, parts a through e of IE Bulletin 75-04A. This is scheduled for completion by June 1, 1975.
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- Licensee's letter to IE:I dated April 24, 1975
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