United States Nuclear Regulatory Commission - Protecting People and the Environment

ACCESSION #: 9701090073

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Struthers-Dunn Model 255XCXP Relay
Root Cause Evaluation Principal
for
Salem Nuclear Generation Station
October 30, 1996
FPI 96-829


Struthers-Dunn Model 255XCXP Relay
Root Cause Evaluation Principal
for
Salem Nuclear Generation Station
October 30, 1996
FPI 96-829

Principal
Investigators: James Riddle 
               Mike Ramsey
Technical
Contact:       Craig Bersak, PSE&G

Approved By:
               Dr.  Chong Chiu

This report was prepared for Public Service Electric and Gas Company.  No
part of this document may be reproduced without the consent of FPI,
International.


                            Table of Contents

Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Failure Analysis  . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

     Visual Inspection  . . . . . . . . . . . . . . . . . . . . . . . . 3
     Electrical testing . . . . . . . . . . . . . . . . . . . . . . . . 5
     Force-Balance Analysis . . . . . . . . . . . . . . . . . . . . . . 8

Analysis Conclusions  . . . . . . . . . . . . . . . . . . . . . . . . .11
Root Cause Evaluation . . . . . . . . . . . . . . . . . . . . . . . . .12
Corrective Actions  . . . . . . . . . . . . . . . . . . . . . . . . . .13

     Attachments:
          I    Photodocumentation
          II   Correspondence - Application Information
          III  Product Data


                            Executive Summary

FPI, International received four (4) relays for failure analysis and Root
Cause Evaluation from Public Service Electric and Gas Company, Salem
Nuclear Generating Station.  One of the relays was reported to have
spuriously unlatched and a second relay was reported to not have latched
on actuation.  The other two relays, one a new style and the other an old
style relay, were supplied as correlation samples.

Failure analysis confirmed the failure to latch of the one relay and the
spurious unlatching, under mild mechanical shock, of the second relay.  A
significant finding was construction differences between the old style
(1972 vintage) and new style relays (1995 vintage).  The construction
differences make the new type relays more prone to latching problems than
the older style relay.  The most significant difference is the lower
latching force on the new style relays.  This problem is the direct
result of lower spring tension on the latch lever.  Another significant
concern is the deviation of the electrical characteristics of the new
release coils from the design specifications which indicate that the new
relays are not direct replacements for the old relays.

The root cause of the two relay failures is design differences between
the old and new relays that make the new relays more prone to latching
problems and spurious unlatching than the old style relays.

The three corrective action recommendations are to (1) review safety
related applications for susceptibility to failure of the new style
relays and replace or rework relays which present significant compromise
of plant safety, (2) review new relay design to justify like for like
compatibility with the old style relays and (3) conduct tests and
measurements to determine adjustments to be made on new relays to assure
operability in challenging environments.  FPI, International has the
expertise to assist in implementing all the corrective actions.

                                    1


                              Introduction

FPI, International received four (4) relays for failure analysis and Root
Cause Evaluation from Public Service Electric and Gas Company, Salem
Nuclear Generating Station.  One of the relays was reported to have
spuriously unlatched and a second relay was reported to not have latched
on actuation.  The other two relays were correlation samples.  The
component identification and system designation was supplied to FPI in a
memo dated September 20, 1996 which is included in Attachment II at the
end of this report.  Additional background information was obtained via
FAX on October 3, 1996, also included in Attachment II.


The failed relays are new components which had been recently installed in
Bailey Meter Company Relay modules, part number 6615692A, as part of a
general relay change out due.  to the aging of the original relays which
have been operating for the life of the plant.  There have 5 reported
failures of the new type relays.  The relays are procured as Safety
Related components after being dedicated by a third party vendor.  The
manufacturer, Magnacraft Struthers-Dunn does not supply the relay as
Appendix B, Safety Related items.  The Bailey Product Instructions and
relay manufacturer data sheet are in attachment III at the end of this
report.

                                    2


                            Failure Analysis

Visual Inspection

The relays are Magnacraft Struthers-Dunn (S-D or MSD) model 255XCXP type
latching relays.  The operate coils are 24-28 VDC.  The release coils are
also 24-28 VDC.

Relay #1 is an old relay, date code 7228.  It was supplied as a
correlation sample.  The part markings are 255XCX111, manufactured by S-
D.  The plastic case was slightly darkened with age.  The switch contacts
were clean and the exterior of the coils showed no evidence of
degradation which is usually seen as darkening or cracking of the
insulation.  The mechanical design of this relay is significantly
different that the three new relays.

Relay #2 is a new relay, date code 9549.  It was reported to have
spuriously unlatched in service.  It was later reported that the
unlatching of this relay was concurrent with the actuation an adjacent
relay in the same Bailey module.  The part markings are 255XCX128.  The
suffixes in the part numbers is either for a Bailey (111) part or a
Public Service (128) part.  Internal inspection revealed that this relay
was essentially new.  There was no evidence of aging on any of the
internal components.  There was no evidence of any loose parts or gross
misalignment the coils or latching mechanism.  No wear was evident on the
latching mechanism or any other moving parts.

Relay #3 is a new relay, date code 9616.  It was reported to have failed
to latch upon actuation while in service in a Bailey Relay module.  The
part markings are 255XCX128.  Internal inspection revealed that this
relay was new.  There was no evidence of aging on any of the internal
components.  There was no evidence of loose parts or gross misalignment
of the coils or latching mechanism.  No wear was evident on the latching
mechanism or a...  other moving parts.

                                    3


Relay #4 is a new stock relay, date code 96** (date code marking on case
smudged).  It was supplied as a correlation sample.  The part markings
are 255XCX128.  Internal inspection revealed that this relay was new. 
There was no evidence of aging on any of the internal components.  There
was no evidence of any loose parts or gross misalignment of the coils or
latching mechanism.  No wear was evident on the latching mechanism or any
other moving parts.

As was mentioned earlier, there are significant differences in the
mechanical construction of the old relay and the three new relays.  Most
of the differences are in the reset coil and latch assembly.

     1.   The presence of a frame in the new relays is a major difference
          compared to the old relay.  On the old relay the reset coil
          assembly is attached directly to the top of the operate coil
          assembly.  On the new relays the operate and reset assemblies
          are attached to a U shaped frame.  The frame provides less
          torsional rigidity to the assembly, especially in the alignment
          of the resent and operate coils.

     2.   There are numerous alignment adjustments on the both the new
          and old assembles, all intended to precisely position the
          plastic latch on the reset coil armature to the latch lever on
          the operate coil armature.  On the old style relay these
          adjustments are made with the hardware on rigid clamps which
          connect the reset coil assembly to the operated coil assembly. 
          On the new style relay these adjustments are in the frame
          attachment hardware and in the case of the height adjustment
          via shims between the reset coil assembly and the frame.  The
          alignment scheme on the new style relays is less rigid then
          that on the old style relays.

     3.   The switch contact spring arms are significantly more bent,
          preloaded, on the new relays.  This results in a higher contact
          force on the new relays but also a higher pull-in force of the
          operate coil and stronger pull-out force on the reset coil
          latch.

                                    4


     4.   The reset coils are completely different on the old and new
          style relays.  The coil resistance of the new reset coils is in
          the range of 460 Ohms and the old reset coils measures 309 Ohms
          (cold).  The core is also larger on the old style reset coil. 
          The higher resistance on the new coils is disturbing because it
          is not in accordance with the data sheet specification.  The
          electrical performance differences will be discussed below in
          the Electrical Testing section of the report.

     5.   A most significant difference between the old and new style
          relays, as related to the failure mode, is the reset coil
          armature spring.  The armature return spring on the old relay
          is significantly stretched in the latched and released states. 
          This delivers significant force to the latch.  The return
          spring on the new relays is almost fully relaxed in the
          released position and slightly stretched in the latched
          position.  This condition provides reduced holding force to the
          latch.  The details of this condition will be discussed on the
          Force Balance section of this report.

Electrical testing

Initial electrical testing confirmed the failure to latch of the #3
relay.  The #3 relay would not remain latched when the operate coil was
actuated and power was removed.  After the cover was removed the relay
began to latch successfully.  It was noted during removal of the cover
that it was a tight fit and reinstallation of the cover confirmed that
the tight fit was interfering with the relay frame, causing it to bend. 
Testing after the cover was reinstalled revealed that the relay would not
latch.  The presence of the cover is interfering with the alignment of
the latch mechanism.  It was noted during subsequent testing, after the
cover was removed that the relay could be made to release with a minor
flexing (twisting) of the frame.

                                    5


Initial electrical testing of relay #2 revealed that the relay would
latch at normal voltage/current compared to #4 but could be made to
unlatch under mild mechanical shock (pencil tap on side of case).

Initial electrical testing of #1 and #4 revealed that they both set and
rest normally.  Relay #4 could be made to release with moderate
mechanical shock (screw driver handle tap to side of case) and #1 could
be made to release under strong mechanical shock (banging relay on table
top).

Static electrical testing was performed with a DMM in the resistance mode
(Fluke 8060A) for coil resistance measurements and a millivolt meter and
a constant current source (10.00 mA) for the switch contact resistance
measurements.  The switch contact resistances in the N/O and N/C states
on all the relays were good, in the range of 0.001 Ohms.  The coil
resistance measurements on the relays revealed that there was a
significant difference on the reset coils on the old and new style
relays:

Sample         Operate coil             Reset coil
  #1              240 Ohms               309 Ohms
  #2              250 Ohms               460 Ohms
  #3              240 Ohms               470 Ohms
  #4              250 Ohms               460 Ohms

The Struthers-Dunn specification sheet shows a nominal resistance for the
operate coil of 250 Ohms and a nominal resistance for the reset coil of
300 Ohms.  The higher resistance (more windings) of the new coils results
in a lower current (cold) necessary to actuate the reset coil as
indicated by the following data:

Sample         Volts          Release mA
  #1           24 VDC          78.2 mA
  #2           24 VDC          52.0 mA
  #3           24 VDC          51.0 mA
  #4           24 VDC          52.5 mA

                                    6


Again, The Struthers-Dunn data sheet specifies a nominal release current
of 80 milli-Amps for these relays.  The new relays are not in compliance
with the published specifications.

Another result of the different release coil assembly is a lower reset
voltage on the new relays due to the lower overcoming force necessary on
the reset armature spring.  The pick-up and drop-out voltages are
recorded as follows:

#1   Pick-up = 16.8 VDC
     Release = 15.5 VDC
     Pick-up = 15.3 VDC

#2   Pick-up = 12.9 VDC
     Release = 11.9 VDC
     Pick-up = 13.3 VDC

#3   Pick-up = 14.0 VDC
     Release = 10.0 VDC
     Pick-up = 13.5 VDC

#4   Pick-up = 15.9 VDC
     Release = 12.2 VDC
     Pick-up = 12.9 VDC

Note that the release voltage is somewhat lower on the new relays which
is a result of the lower return spring overcoming force as discussed in
the Force Balance section of the report.

                                    7


Force Balance Analysis

A force-balance analysis was performed on the latching mechanism of the
old relay compared to the new relays.  Samples #1, #2 and #4 were used
for the testing.  Sample #3 was left intact for possible future testing
as a worst case condition.

Diagram omitted.

The above diagrams are the force balance schematics.  The left schematic
is in the latched position and the right schematic is in the unlatched
position.

Relays #1 (Old Style) and #2 (New Style) were used to take direct
measurements of the spring and latch geometries.  The spring on the #1
relay was noted to be extended in both the latched and unlatched
positions.  The spring on the #2 relay appeared to n--be extended in the
latched position.

The spring dimensions were taken from established reference points across
the collapsed and extended spring coils.  The spring extension was
measured on the release armature springs, in place, in the latched and
unlatched state.  The springs were then removed from the relays and the K
factor was measured.  The armatures were measured to obtained the lever
ratio from the spring center of force to the lip of the latch.  The
following data was obtained:

                                    8


          PARAMETER                OLD #1              NEW # 2

     Spring Constant               66 gram/mm          78.6 gram/mm
     Extended Length Latched        10.4 mm             6.3 mm
     Extended Length Unlatched      10.65 mm                 6.7 mm

     Collapsed Length (Removed)      8.5 mm             6.25 mm
     Spring Force Latched          125.4 gram           3.93 gram
     Spring Force Unlatched        142.0 gram          35.0 gram
     Lever Ratio                     2.64 : 1           3.2 : 1
     Latched Clamping Force         47.5 gram           1.23 gram

The latching force is significantly lower at the latch on the new relays
than on the old relays.  Combined with the higher switch contact spring
tension on the new relays, which work to pull the relay open, the new
relays are more susceptible, by design, to a failure to latch (based on
minor misalignments) and spurious unlatching under minor mechanical
shock.

A calculation was made to determine what adjustments would be necessary
to increase the latching force on the new relays to that on the old
relay.  It was determined that bending the spring attachment tab
approximately 1.88 mm open was sufficient to increase to latching force
at the latch on the new relays to the 50 gram range measured on the old
relays.  This may be the most efficient fix for the weak latching
problem.

However, simply bending the tabs on the reset relay armature may affect
relay timing and release coil pick-up voltage.  A simple experiment was
performed on #2 to test the effect of bending the armature tab to open
the spring.  Note that this relay had been disassembled and the spring
manipulated (loop opened) prior to the experiment.  The relay was
reassembled to approximate the original condition.  The spring extension
measured 6.5 mm in the latched condition.  The release voltage (worst
case, cold) measured 11.62 volts at 24 mA.  The tab on the release coil
frame was bent open 1.9 mm.  It was noticed that the opening of the tab
caused the spring coils to open slightly but most of the stretch was
taken up by opening of the coil attachment loop.  The spring extension
measured 6.9 mm in the latched position at the same

                                    9


datum as the original measurement.  The extension resulted in a
calculated increase of the latching force from 2.45 gm to 12.3 gm at the
latch.  The pickup voltage measured 11.69 VDC at 24.8 mA after the bend. 
The conclusions from this experiment are that bending the tab out to
extend the spring does not significantly affect the pickup voltage
characteristics of the relay.  one observation made during this
experiment is that, as a rule of thumb, one must be able to see light
between the spring coils in order to assure some spring extension in the
latched condition.  Light could not be detected in the original 6.5 mm
extension but could be seen in the 6.9 mm extension.  This parameter
could be quantified as a spacing measurement between coil loops.  The
result of the bend is a 5X increase in latching force between the two
adjustments with no significant change in the electrical performance. 
Evaluate these results with caution, the effect on switching time has not
been determined.

                          Analysis Conclusions

Testing and failure analysis first confirmed the failure to latch on #3. 
This relay recovered the ability to latch when the cover was removed and
failed when the cover was replaced.  The latch could be made to release
under mild twisting stress to the frame during testing with the cover
removed.  Relay #2 was made to unlatch under much lower mechanical shock
stress than the old design #1 relay.

The old style and new style relays have significant design differences
especially in the latching mechanism.  These differences contribute to
the propensity for the failure to latch mechanism and the spurious
release failure mechanism.  The major differences are listed as follows:

     A.   The presence of the surrounding frame in the new relays is a
          much less torsionally rigid system for maintaining the latching
          mechanism critical dimensionality than the old style direct
          bracket arrangement between the operate and reset coil
          assemblies.

                                   10


     B.   The lack of rigidity in the frame means that the latching
          adjustment tolerances must be maintained to a very precise
          degree to insure proper operation.  The new style relays are
          prone to spuriously release under much lower mechanical shock
          than the old style relays.  Stress from pressure from the cover
          caused relay #3 to fail due to distortion of the frame.

     C.   The lower latching force on the new relays is the primary cause
          of the lowered ability of the new relays to latch and remain
          latched.  The most direct corrective action is to increase the
          spring force on the new relay reset latch armature.

     D.   The electrical characteristics of the new release coils are
          significantly different than the old coil and are not in
          compliance with the manufacturers published data.  As a result
          of this difference (and the reset mechanism differences), the
          new relays are not "like for like" replacements for the old
          relays.

                          Root Cause Evaluation

The root cause of the two relay failures is design differences between
the old and new relays that make the new relays more prone to latching
problems and spurious unlatching than the old style relays.  Another
significant concern is the deviation of the electrical characteristics of
the new release coils from the design specifications which indicate that
the new relays are not direct replacements for the old relays.

                                   11


                           Corrective Actions

Three corrective actions are recommended.  FPI, International has the
expertise to assist in implementing all the corrective actions.

First, a review should be performed of all the plant applications of the
new relays for their adequacy in the operating and design environment. 
Determine if the reliability of the new style relay is adequate for the
Safety Related applications at the Salem Nuclear Generating Station. 
This corrective action is necessary to justify the installation of the
new relays in safety critical applications.  If adequate justification
cannot be made, the relays will have to be changed out.

Secondly, review the adequacy of the new relay design.  This corrective
action involves a review of the results of this analysis with the
manufacturer and supplier in order to determine the reasons for the
design changes and the manufactures basis for assuming that the relays
are interchangeable.  This is especially critical in the lowering of the
holding force on the reset coil latch and incidentally important on the
release coil electrical parameter changes (which if justified would
require a specification sheet change).  We suspect that the coil changes
are the result of maintaining switching time specifications but we do not
have access to that design information.

Thirdly, conduct necessary tests, adjustments and experiments to justify
the use of the new relays in challenging environments.  One experiment
performed at FPI on the new relays determined that simply adjusting the
spring tension on the release armature spring as little as 1 mm will
increase the latching force to the range of the old style relays.  This
adjustment could potentially correct the problem.  Similar mechanical
adjustments or repairs may increase the reliability of the relays to
acceptable levels.  It is possible that augmented testing, dimensional
verification or design change justification may be adequate to assure the
reliability of the replacement relays.

                                   12


It is a also incumbent on PSE&G to inform other users of this model relay
of the problems encountered with the spurious unlatching.  A short report
on the INPO Nuclear Network of the problems encountered at Salem would be
a responsible action.  There may be Part 21 issues associated with the
dedication of the relays for Safety Related applications.  This issue
should be evaluated by the supplier.

                                   13


Attachment I
Photodocumentation


Figure 1:  "Photograph of the old style relay #1, case removed.
Note the bracket attachment of the reset coil assembly." omitted.

Figure 2:   "photograph of relay #1, side view, showing the frame
arrangement for the coil assemblies." omitted.


Figure 3:   "Close up of the reset assembly on relay #1, unlatched."
omitted.

Figure 4:   "Close up of the reset assembly on relay #1, latched."
omitted.


Figure 5:   "Close up of relay #1 reset coil spring assembly." omitted.

Figure 6:   "Magnified view of Figure 5 showing the spring extension
on the #1 relay, latched position." omitted.


Figure 7:   "Photograph of relay #2, case removed.  The relay is in the
latched position." omitted.

Figure 8:   "Close up of Figure 7 showing the reset coil assembly in
the latched position.  Note the coil extension." omitted.


Figure 9:   "Photograph of relay #3 with the cover removed, unlatched
position." omitted.

Figure 10:   "Close up of the reset coil assembly in Figure 9." omitted.


Figure 11:   "Photograph of relay #4, cover removed, in the unlatched
position." omitted.


Figure 12:   "Close up of the reset coil assembly on relay #4,
latched position.  Note the spring extension." omitted.


Attachment II
Correspondence
Application information


MEMO

To:       Dr.  Chong Chiu

From:     Craig D.  Bersak (609) 339-7463, FAX (609)339-2210
          PSE&G Nuclear Business Unit, PO Box 236, Hancocks 
          Bridge, NJ 08038

Subject:  Proposal for Relay Failure Analysis

Date:     September 20, 1996

          The following is being provided in anticipation of approval of
          a Purchase Order by PSE&G, it is not authorization to begin
          work.

          Enclosed are four relays for your evaluation.

          Relay #1 was is an old relay that has NOT had a failure
          associated with it.

          Relay #2 spuriously tripped from a latched condition to its
          reset condition.

          Relay #3 failed to maintain itself latched following an operate
          demand.

          Relay #4 is a new relay that has not been installed in a Salem
          system.  The case was opened and the wire from pin 5 to the
          RESET coil repositioned due to its having been crimped.

          Relay #2 (83 relay for 22RH29) functions as the AUTO-MANUAL
          relay for the RHR Heat Exchanger Bypass valve.  Its failure
          occurred when it swapped to MANUAL (reset condition) as RHR
          loop flow was being reduced to its low flow setpoint.  The low
          flow signal energizes a 219 style 115 Vac relay co-located with
          this relay in its Bailey Can.  [The 83 relay is in the K1
          position in the can, two 219 style relays are in the K2 and K3
          position actuated on High and Low flow signals respectively.]

          Relay #3 (18SS relay for 22 BAT Pp) is the Slow Speed Start
          relay for a Boric Acid Transfer Pump.  It failed to maintain
          the latched condition when the demand condition was removed.
          [The 83 relay is in the K1 position in the can, two 219 style
          115 Vac relays are in the K2 and K3 position, actuated on High
          and Low flow signals respectively.]

          Additionally, I am including the following documentation:
               Circuit diagrams for relays #2 and 3.
               Manufacturer's Specifications for 255 and 219 style relays
               Bailey Relay Module Technical Manual

          If I can be of any assistance please call me at (609) 339-7463.


MEMO

To:       Mr.  James Riddle FAX (714)361-5479

From:     Craig D.  Bersak (609) 339-7463, FAX (609)339-2210
          PSE&G Nuclear Business Unit, PO Box 236, Hancocks.  Bridge, NJ
          08038

Subject:  Response to Questions from 10/2/96

Date:     October 3, 1996

Here are answers to your questions from yesterday.

Are the capacitors electrolytic?

     Electrolytic capacitors are used in some Bailey control circuits.  I
     looked over the Boric Acid Transfer Pump and 22RH29 control circuits
     and neither of these circuits use capacitors.  You may be confusing
     the contacts off of the control room's pushbutton stations for
     capacitors.  A pushbutton's contact appears as: (Equation omitted.)

     The capacitors shown in the Bailey manual, page 3, as pan of the
     Suppression Circuit Board, are not in the models of the modules used
     at Salem (6615692A1, A2, A3).

     Where electrolytic capacitors are used they are being inspected
     /tested and replaced when necessary.

What is the voltage at the relay cabinets?

     The 28 VDC system voltage is nominally maintained between 28 to 30.3
     VDC.  Per a verbal discussion with a technician, they typically see
     29+ VDC when they check at the back of a relay cabinet.

What is the significance of the suffixes -111, -128 on the relay IDs?

     I have not been able to identify the specific special construction
     features identified by these suffixes.  The S-D catalog states "when
     a special type of construction is not covered by a 'common' feature
     or when it combines several of them, a "special number is assigned
     at the factory.  This number will always be '100' or greater, and
     applies only to the relay to which it was assigned." I've tried
     repeatedly to contact Mr.  Thomas Mahaffey, Production Engineering
     Manager at Magnecraft/Struthers-Dunn (803) 395-8512, for the details
     without his returning my calls.  When I get in contact with him I
     will inform you of the results.

Should you need any other information please contact me.


FAX

To:       W.  James Riddle FAX# 714-361-5479

From:     Craig D.  Bersak (609) 339-7463, FAX (609)339-2210
          PSE&G Nuclear Business Unit, PO Box 236, Hancocks Bridge, 
          NJ 08038

Subject:  Relay suffix numbers

Date:     October 3, 1996

Spoke to Tom Mahaffey of MSD, the suffix numbers mean that the relays
were marked with a Bailey Part number (Suffix 111) or Public Service part
number (Suffix 129).

Otherwise they are the standard 255XCXP relays,


Attachment III
Product Data


                                                                  SECTION
Bailey                                                          
                                                                 E92-52

PRODUCT INSTRUCTIONS

RELAY MODULE

PT.  NO.  6615692A [ ]

Figure omitted.

BAILEY METER COMPANY o WICKLIFFE, OHIO 44092

                                                         FORM 1E92-52-670
                                                          LITHO IN U.S.A.


E92-52
Page 2                                                             Bailey

                           MODULE DESCRIPTION

     The Relay Module for Bailey 660 Systems is a three-unit wide (3-3/8
inches) module designed for plug-in mounting in a standard Bailey
electronic systems cabinet (see Figure 1).  The unit is frequently used
with the Type RZ Multiple Switch and Light Station for contact interlock
and signal light operation.

Figure 1 -  "Relay Module" omitted.

     The module can contain three plug-in, multiple-contact relays and is
used primarily for interlocking or circuit protection.  As options,
diodes can be added for selective relay operation or a warning flasher
can be installed.

     Three general purpose relays can be installed in one module.  If a
flasher is used, height interference permits a maximum of two latch type
relays and one general purpose relay to be installed in one module. 
Relay variations are listed in Table 1.  The complete assembly of the
module is shown in Figure 4.

     All electrical connections are made thru one or two rectangular 32-
pin connectors mounted on the rear of the module.

Table 1 omitted.

[copyright] BAILEY METER COMPANY 1970


                                                                   E92-52
Relay Module                                                       Page 3

                           CIRCUIT DESCRIPTION

Suppression Circuit Board 

     Six sets of resistors (R1 thru R6) and capacitors (C1 thru C6 can be
provided on an optional suppression circuit board (PC1).  The circuit
provides protection to the coil initiating contacts to prevent burning or
erosion due to coil inductance.  Incoming transients are also suppressed
with the addition of this circuit.  See Figure 2.                         
                          
Figure 2 -  "Schematic Wiring Diagram" omitted.

     Three sets of resistors and capacitors are permanently connected to
relay operating coils.  Remaining sets must be connected to the release
coils when using a latch type relay and must be connected at
installation.

Blocking Diode Circuit

     Blocking diodes (CR1 thru CR6) are optional and are located on
rectangular connector pins at rear of module.  Diodes provide selective
relay operation on bidirectional operating voltages.  See wiring
schematic shown in Figure 2.

Flasher

     One optional flasher can be provided in the module.  Circuit wiring
for flasher must be provided external to module.  Input voltage of
flasher is 18 to 32v DC with a power consumption of 1 watt.  Contact
rating is 0.5a (resistive load) with a flashing rate of 1/2 second on,
1/2 second off.  Flash rate is not adjustable.

Control Relay

     Internal wiring diagrams for various types of relays are shown in
Figure 3.

Figure 2 "Schematic Wiring Diagram" omitted.


E92-52
Page 4                                                             Bailey

FIGURE 3 -  "Relay Internal Wiring Diagrams" omitted.

                                SERVICING

     Check operation of Relay Module by substituting a known trouble-free
module for the one in service.  If trouble is definitely traced to the
module, check for broken wires, damaged connectors or shorted leads.  If
trouble continues after repair, consult a Bailey service representative
or return unit to factory for repair.

Flasher Replacement 
(Refer to Figure 4.)

     1.  Remove fastener studs and pull Relay Module from systems
cabinet.

     2.  If module has plug-in relay installed in KX3 position, remove
relay.

     3.  Disconnect wires to flasher (12).

     4.  Disassemble flasher by removing hex nuts (20) and washers (21).

     5.  Install new flasher and rewire in accordance with Figure 5.

     6.  Replace relay in KX3 position if removed in step 2.

     7.  Install Relay Module in systems cabinet.  Replace fastener studs
and tighten.

                            REPLACEMENT PARTS

     A Parts Drawing covering the Relay Module is shown in Figure 4. 
This drawing will normally apply to the units furnished.  However, there
may be individual differences in specific assemblies due to:


     a.  Design changes made since the printing of this Instruction
Section.

     b.  Special design of equipment furnished to mae it suitable for
special application.                                                      
                                              
     Therefore, when ordering parts, assure receipt of correct
replacements by specifying on the order:

     1.   Complete nomenclature, code label number and part number of
equipment for which parts are desired.

     2.  Parts Drawing number on which each part is illustrated.  (The
Parts Drawing Number is given in the title for the Figure.)


                                                                   E92-52
Relay Module                                                       Page 5

FIGURE 4 -  "Parts Drawing E92-58, Relay Module, Part No. 6615692A"
omitted.


E92-52
Page 6                                                             Bailey

FIGURE 5 "Relay Module Wiring Diagram" omitted.


Instructions for Understanding
Bailey Relay Cabinet
Arrangement and Wire Tabulations

The Bailey Relay Cabinets an sectioned in 11 rows, which contain the
following equipment and designations:

     Row 1     1634-pin Amphenol Series 93 Cable Connectors.  Cables that
               route to the Control Console plug in here.  The cable
               connector position number is identified by numbers 2 thru
               16.  The pins on each connector art identified by letter
               designation A thru NN.

Rows 2 thru 9  Bailey Relay Modules.  The relay modules consist of three
               relay sockets, identified as KX1, KX2, and KX3 (front to
               rear of module), a flasher relay in some but not all
               modules), and two male 32-pin Amphenol Blue Ribbon style
               connectors (mounted to the rear of the module).  Female
               32-pin connectors am mounted on the back of the relay
               cabinet, while the rear doors of the cabinet provide
               access to this wiring.  The pins of the connectors am
               identified by numbers 1 to 32, and there are 15 of these
               connectors mounted per row on the cabinet's back panel.

     Row 10    16 34-pin Amphenol Series 93 Cable Connectors.  Cables
               that route to the Aux.  Control System Terminal cabinets
               (located in the Relay Room, directly below the, Control
               Room) plug in here.  The cable connector position number
               is identified by numbers 1 thru 16.  The pins on each
               connector are identified by letter designation A thru NN.

     Row 11    Service Section of the Cabinet.  A 40-point terming strip
               (which is identified as Position 1) and 10 circuit
               breakers (identified as Positions 2 thru 11).


Table omitted.

Figures 1 and 2  "Typical Bailey Relay Cabinet Arrangement" omitted.

Examine the designation in Fig. 1.  The cabinet series and cabinet number
is shown in the title block of the arrangement drawing, and identifies
the particular cabinet where the components are located (in this case,
RC25-6).  The bottom three characters, as shown, call out the row, wiring
position, and pin number.  The row designation should be self explanatory
(they are clearly represented on the arrangement drawings).  There are
three wiring positions in each module, where relay sockets X-1 and X-2
(designated as KX1 and KX2 in PSBP #301699) are in the first wiring
position.  Relay socket X-3 (KX3 on the PSBP) and the flasher are in the
second wiring position.  The third wiring position (which is used for
jumpering on the rear panel of the Bailey Relay cabinet) never has any
equipment located in it.


The rear or the Relay Module has two male Blue Ribbon Connectors mounted
on the rear section, while the rear of the Bailey Relay Cabinet has three
female Blue Ribbon Connectors mounted.  There are three wiring positions
in each module, and are numbered from the top to bottom, left to right. 
Since there are 5 module slots per row, that yields 15 wiring positions. 
Note that there is never any equipment shown in any wiring position
divisible by three (3, 6, 9, 12, & 15).  For example, the location of the
74/OP relay for the Rod Control Reactor Bypass Breaker "A" is 6-6-13, or
cabinet 6, row 6, and wiring position 13.

The wiring in the cabinet is color-coded in the following manner:

     118 VAC Line,-           Black
     118 VAC Neutral-         White
     118 VAC Ground -         Green
      28 VDC Positive -       Brown
      28 VDC Negative -       Orange
     125 VDC Positive -       Blue
     125 VDC Negative -       Yellow
     Computer Inputs and -    Green
     Alarms
     Indication -             Red

NOTES:

     1.   Only 2 wires per Blue Ribbon Connector pin may be terminated
          (Rows 2 thru 9), and the maximum wire size is #18 AWG.

     2.   Only 1 wire per Amphenol Series 93 Connector pin (Rows 1 and
          10), and the maximum wire size allowable is #22 AWG.

     3.   All soldering is to be performed by qualified personnel in
          accordance with the latest soldering procedure.


Figure "MODULE PART NUMBERs" omitted.


Figure  "BAILEY RELAY CABINET (Rear View) omitted.


Figures "idec GT3A SERIES; GT3A-1/GT3A-2/GT3A-3 (Multi-Mode), Four
Selectable Operation Modes In One Timer (On Delay, Interval, Cycle and
Cycle On" omitted.


Figure "GT3A-1, -2, and -3 ALL MULTI-RIVERS (MULTI-MODE TYPE)" omitted.


Figure "Timing Diagrams" omitted.


Figures and Tables "300 VOLT GENERAL PURPOSE PLUG-IN RELAYS" omitted.

     Series 219 General Purpose Industrial Plug-In Relays feature a 12
pin and a 14 pin size, from 2 Form C to 4 Form C or 6 Form A/Form B
combinations.  A locking clip on the plug is provided as standard.  The
coil is encapsulated for protection.  Gold diffused silver cadmium oxide
contacts are standard.  The screw terminal socket has all terminals on a
single level, which facilitates the wiring process.  Nuclear qualified
versions are available.  Contact the factory for details.


                 PUBLIC SERVICE ELECTRIC AND GAS COMPANY
                           NUCLEAR DEPARTMENT

                   SPECIFICATION NO. S-C-RCP-CDS-0343

          REACTOR CONTROL AND PROTECTION SYSTEM CONTROL RELAYS

                         DETAILED SPECIFICATION

                            REFERENCE NO: N/A

IMPORTANT TO SAFETY:          
                         YES       NO

Routing form omitted.


                                   Specification No.  S-C-RCP-EDS-0343
                                   Revision 0
                                   Page i

                            TABLE OF CONTENTS

1.0  SCOPE                                                              1
2.0  DEFINITIONS                                                        1
3.0  CODES, STANDARDS AND REGULATORY REQUIREMENTS                       3
4.0  SUPPLEMENTAL DATA                                                  4
5.0  DOCUMENT SUBMITTALS                                                4
6.0  DESIGN REQUIREMENTS                                                6
7.0  PERFORMANCE REQUIREMENTS                                           6
8.0  MATERIAL REQUIREMENTS                                              6
9.0  FABRICATION AND ASSEMBLY REQUIREMENTS                              7
10.0 INSTALLATION REQUIREMENTS                                          7
11.0 INSPECTIONS AND TESTS                                              7
12.0 QUALIFICATION                                                      7
13.0 CLEANING                                                           9
14.0 MARKING AND IDENTIFICATION                                         9
15.0 PACKAGING, HANDLING AND STORAGE                                   10
16.0 DEFECTS AND NONCOMPLIANCES                                        10
17.0 RECORDS                                                           10
18.0 OTHER REQUIREMENTS                                                10
19.0 RIGHT OF ACCESS                                                   10
20.0 GA PROGRAM REQUIREMENTS                                           11
21.0 RELAY SPECIFIC REQUIREMENTS                                       12
     21.1   219 Series 300 V General Purpose Plug-In Relay
            Specification Requirements                                 13
     21.2   B255 Series 300 V Latching Plug-in Relay 
            Requirements                                               16
     21.3   219 & B255 Series Mating Socket Physical 
            Dimensions                                                 19


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                                   Specification No.  S-C-RCP-EDS-0343
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                                   Page 1

1.0  SCOPE

     This specification defines the construction, functional,
     performance, quality assurance and shipping requirements for
     Struthers-Dunn 219 and B255 Series general purpose and latching
     plug-in relays respectively.  These relays are used in various
     applications in the Reactor Control and Protection System and
     various other control systems at Salem Nuclear Generating Station
     Units 1 and 2.  An equivalent replacement relay is acceptable. If it
     meets all the requirements of this specification and has the same
     form, fit and function as the Struthers-Dunn 219 and B255 Series
     relays.

     It is not the Intent herein to specify all details of design and
     construction.  It shall be the responsibility of the Vendor to
     ensure that the equipment has been designed and fabricated in
     accordance with engineering codes, standards, and federal and state
     regulations in accordance with section 3.0 and 4.0 of this
     specification.

     No deviation from this specification or applicable federal, state,
     and local codes and standards shall be accepted until approved by
     PSE&G.  Deviations are considered departures from any requirements
     of this specification.

     Nonconformances from federal, state, and local codes and standards
     must be submitted to the cognizant jurisdictional agency for
     authorization, prior to submittal to PSE&G.  After obtaining
     approval, Vendor shall promptly document and notify PSE&G of all
     deviations and nonconformances from the purchase order/contract. 
     Further engineering, manufacturing or fabrication after detection of
     any deviation or nonconformance prior to PSE&G approval shall be at
     the Vendor's risk.  No departures from this specification shall be
     binding on any party until an addendum or revision to the
     specification has been issued.

2.0  DEFINITIONS

2.1  Abbreviations/Definitions

     ANSI -         American National Standards Institute

     Approved -     this word, when applied by the Owner to the Vendor's
                    drawings or documents, means that the drawings or
                    documents are satisfactory from the stand-point of
                    interfacing with all Owner-furnished components of
                    the installation and/or that the Owner has not
                    observed any statement or feature that appears to
                    deviate from the Specification's requirements. 
                    Except for the interfacing


                                   Specification No.  S-C-RCP-EDS-0343
                                   Revision 0
                                   Page 2

                    with all Owner furnished components, the Vendor shall
                    retain the entire responsibility for complete
                    conformance with all of the specification's
                    requirements.

     Class 1E -     the safety classification of the electrical equipment
                    and systems that are essential to emergency reactor
                    shutdown, containment and reactor host removal or are
                    otherwise essential in preventing significant release
                    of radioactive material to the environment.

     Design -       the time during which satisfactory performance can be
     Life      expected for a specific set of service conditions.

     NEMA -         National Electrical Manufactures Association

     IEEE -         Institute of Electrical and Electronic Engineers

     OBE -          Operational Basis Earthquake

     Owner -        Public Service Electric and Gas, Newark, New Jersey

     PSE&G -        Public Service Electric And Gas

     PSIA  -        pounds per square inch absolute

     Seismic -      indicates that the equipment has been classified and
     Qualified      certified to meet its performance requirements during

                    and following one SSE preceded by five OBE's.  All
                    seismically qualified equipment shall satisfy
                    Category 1 seismic requirements.

     Service -      the Interval from installation to removal, during
     Life           which the equipment may be subject to service
                    conditions and service demands.

     SQURTS-        Seismic Qualification Report & Testing
                    Standardization

     SSE -          Safe Shutdown Earthquake

     Vendor-        a company either submitting a proposal or selected to
                    fulfill the requirements of this specification.


                                   Specification No.  S-C-RCP-EDS-0343
                                   Revision 0
                                   Page 3

3.0  CODES, STANDARDS AND REGULATORY REQUIREMENTS

3.1  General

3.1.1     Various codes and addenda, standards, or other documents that
          are mentioned by short form name elsewhere in this
          specification are fully identified below.  To the extent that
          these documents apply, as stated herein, the version of the
          document listed below shall be used.  A later version of some
          of the dated documents may become mandatory under regulations
          that have jurisdiction.  If this occurs, the mandated version
          of the document shall be used.

3.1.2     If there is, or seems to be, a conflict between this
          specification and a reference document, the matter shall be
          referred to the Owner who will provide written clarification.

3.2  Various applicable documents follow:

     ANSI N45.2.2 - 1972      Packing, Shipping, Receiving, Storage, and
                              Handling of Items for Nuclear Power Plants

     ANSI N45.2.11 - 1974     Quality Assurance Requirements for the
                              Design of Nuclear Power Plants

     IEEE 344 - 1975/87       Recommended Practices for Seismic
                              Qualification of Class 1E Equipment for
                              Nuclear Power Generating Stations

     SQTS-01-GSQTP            General Seismic Qualification Technical
     Rev  4                   Procedure

     SQTS-01-CR-1-SFP         General Purpose Control Relays Seismic and
     Rev.  5                  Functional Procedure

     UL 508 - 17th edition    Standards for Safety Industrial Control
                              Equipment

     Regulatory Guide 1.38    Quality Assurance Requirements for 
     October 1976             Packaging, Shipping, Receiving, storage,
                              and Handling of Items for Water-Cooled
                              Nuclear Plants (endorses ANSI N45.2.2 1972)


                                   Specification No.  S-C-RCP-EDS-0343
                                   Revision 0
                                   Page 4

     Regulatory Guide 1.64    Quality Assurance Requirements for the
     October 1973             Design of Nuclear Power Plants (endorses
                              ANSI N45.2.11-1974)

     Regulatory Guide 1.100   Seismic Qualification of Electrical
                              Equipment for Nuclear Power Plants
                              (endorses IEEE 344-1975)

Title 10 Code of Federal Regulations

     Part 21        Reporting of Defects and Noncompliance

     Part 50        Domestic Licensing of Production and Utilization
                    Facilities

     Appendix A     General Design Criteria for Nuclear Power Plants

     Appendix B     Quality Assurance Requirements for Nuclear Plants and
                    Fuel Reprocessing Plants

4.0  SUPPLEMENTAL DATA

4.1  The Public Service Electric and Gas Company's Salem Generating
     Stations have committed to meeting the requirements of the
     Regulatory Guides of Section 3.2.  Compliance with the Regulatory
     Guides shall be accomplished by satisfying the requirements of the
     associated ANSI, IEEE or ISA standards.

4.2  PSE&G - Standard Specification 0-01, "Quality Requirements for
     Suppliers."

5.0  DOCUMENT SUBMITTALS

5.1  Equipment Qualification Reports

5.1.1     The Vendor shall supply the Owner, for review and approval,
          four (4) copies of the Qualification report demonstrating
          compliance with the testing requirements of Section 12.0.  Upon
          approval by the Owner, this requirement may be waived.

5.1.2     The qualification report shall document the results of the
          relay type testing performed and any analyses associated with
          such testing.

5.1.3     Qualification reports shall Include recorded date on all
          qualification tested samples.



                                   Specification No.  S-C-RCP-EDS-0343
                                   Revision 0
                                   Page 5

5.1.4     The qualification report shall document, evaluate and
          disposition any malfunctions, anomalies or performance
          deviations which occurred during testing.

5.1.5     All test results shall be reviewed, approved and signed by
          qualified personnel.

5.1.8     The Vendor shall confirm in writing and shall submit a report,
          including calculations and/or test data, for approval by the
          Owner which supports his statement that the equipment furnished
          under the specification meets the requirements for the Safe
          Shutdown Earthquake, Operating Basis Earthquake, and any other
          effects listed herein.  The Vendor shall, as part of his
          report, provide natural frequency data determined by either
          analysis or test.  The analysis or lost shall confirm that the
          resulting deflections shall not cause damage to the equipment
          which may be detrimental to its capability to function as
          specified.  The Vendor shall include a schedule of submittals,
          approvals, interface resolutions, and certificates to be
          submitted to, or received from, the Owner, as discussed herein. 
          When seismic qualification is based on testing, a fully
          detailed test plan must be submitted to the Owner for approval
          prior to the initiation of testing, unless equipment has been
          pre-qualified.  Any deviations from the approved test procedure
          must be approved by the Owner.  Resolution of Engineering
          comments on module qualifications may require additional
          testing which will be negotiated.

5.1.7     All qualification reports shall be of high quality and
          legibility.

5.1.8     Manuals and reports shall be bound so that copies of each page
          may be easily made and revised pages may be easily added.

5.1.9     Each qualification report submittal shall have a unique control
          number for reference and control purposes.

5.1.10    Vendor provided qualification documentation should be
          identified with the PSE&G name and purchase order number.

5.1.11    A controlled copy of the qualification report shall be supplied
          with a purchased equipment whenever new qualification testing
          has been performed.

5.1.12    One controlled copy of each qualification report shall be
          retained at the Vendor's file for future reference.


Specification No.  S-C-RCP-EDS-0343
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Page 6

6.0  DESIGN REQUIREMENTS

6.1       The relay physical dimensions and coil & contact configuration
          shall be as shown by Attachments for the applicable relay type.

6.2       Relays shall plug into the socket assembly shown by Attachment
          for the applicable relay type.

6.3       Relays shall have a design life of not less then 40 years while
          in service under the mild environment defined in Section 6.4. 
          The relay application (normally energized vs. normally de-
          energized) shall not affect the 40 year design life.  The
          following exceptions shall apply;

          -    maximum of 10 million mechanical operations 
          -    100,000 at rated load 
          -    500,000 at half rated load

6.4       Environmental Design Requirements

6.4.1     Relays shall be designed to operate in various instrument and
          relay racks with the following service condition environment

                                   Minimum             Maximum
          Temperature (degrees F)    40                  140
          Pressure (PSIA)          14.69               15.20
          Relative Humidity (%)     20                   90
          Radiation (Total Integrated
          Dose in RADS-gamma for 40 yrs.)              <.10**4

7.0       PERFORMANCE REQUIREMENTS

7.1       The relays shall have performance characteristics which meet or
          exceed the specific performance requirements for each relay
          type in accordance with the Attachments to this specification. 
          For specific performance requirements for each relay type see
          the applicable Attachment.

8.0       MATERIAL REQUIREMENTS

8.1       Relays shall be constructed of high quality materials.


Specification No.  S-C-RCP-EDS-0343
Revision 0
Page 7

9.0  FABRICATION AND ASSEMBLY REQUIREMENTS

9.1       Relays shell be designed and constructed in accordance with the
          applicable Attachments.  Equivalent replacement relays shall
          have the same physical dimensions, mounting, and coil and
          contact configuration as previously qualified relays to achieve
          the form, fit and function of the original relay.

9.2       Relay design, material and workmanship shall result in a high
          quality product.

10.0      INSTALLATION REQUIREMENTS

10.1      Relays shall be designed for mounting In a socket in accordance
          with the applicable Attachment.  Mounting may be in the
          vertical or horizontal plane in various equipment racks.

11.0      INSPECTIONS AND TESTS

11.1      The Owner's authorized representatives shall reserve the right
          to inspect design, materials and workmanship and to report
          thereon, at any time during the program of design, fabrication
          or testing.

12.0      QUALIFICATION

12.1      Electrical and Environmental Qualification Requirements

12.1.1    Relays shall be qualified for operation in the environment
          specified in Section 0.4.  Relay parts shall not be subject to
          degradation for the specified life of the component.

12.1.2    Relays shall have UL 508 certification.  The Vendor shall
          document the applicable parts of the UL 508 certification.

12.1.3    Design changes, part substitutions and other modifications to
          previously qualified designs require either additional
          qualification testing or analysis to prove now designs are
          qualified or to confirm changes have no impact on previous
          qualification testing respectively.  The Vendor shall notify
          and inform the Owner of design changes or modifications to
          previously approved designs.


Specification No.  S-C-RCP-EDS-0343
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Page 8

12.2      Seismic Qualification Requirements

12.2.1    Seismic Qualification adequacy of the equipment shall be
          established by the results of seismic tests performed in
          accordance with IEEE Standard 344-1975/1987 as applicable and
          the combination of SQTS-01-GSQTP titled, "General Seismic
          Qualification Technical Procedure" and SQTS-01 CR-1-SFP titled,
          "General Purpose Control Relays Seismic and Functional
          Procedure."

12.2.2    The Vendor shall qualify the equipment for the specified
          seismic requirement either by performing a similarity analysis
          to a previously qualified equipment whose seismic qualification
          level is adequate to envelope the required seismic response
          spectra for the new equipment, or by performing the required
          simulated seismic qualification tests.  Qualification testing
          or analysis should address relay mounting in the vertical or
          horizontal plane.

12.2.3    The equipment should be seismic tested to its fragility level
          or test response spectra (TRS) shall envelope the site specific
          required response spectra (RRS) when attached.

12.2.4    The minimum acceptance criteria or each seismically tested
          module shall include the following:

          -    No loss of function or ability to perform designed
               functions before, during and after testing.

          -    No structural or electrical failure which could compromise
               equipment integrity,

          -    No adverse operation or misoperation before, during and
               after testing.  Maximum allowable contact bounce (change
               of state) shall be 2 milliseconds during seismic testing. 
               Test equipment shall be capable detecting contact bounce
               of 2 milliseconds or shorter duration.

12.3      Prototype Testing

12.3.1    Qualification programs may be based on prototype testing of
          equipment.  A representative sample of each module type must be
          tested.  Engineering justification of the program must be
          provided to assure qualification of all equipment supplied.


Specification No.  S-C-RCP-EDS-0343
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          Vendors may qualify equipment based on prior testing provided
          the test report is available to the Owner and the Vendor
          submits a report showing that this prior test meets seismic
          testing requirements herein.  Changes to standard qualification
          documentation will be negotiated if review and approval
          requires modification.

          A final analysis and/or test report shall be compiled by the
          Vendor and submitted to the Owner for approval.  It is required
          that the qualification document be complete and address fully
          the equipment being supplied in accordance with this
          specification.

12.4      Certification of Compliance

12.4.1    The seismic testing data report shall be stamped and signed by
          a Registered Professional Engineer.  The Vendor shall submit a
          Certificate of Compliance (COC) documenting compliance to the
          design and qualification requirements of the specification. 
          The certificate should reference the applicable purchase order,
          this specification and the applicable qualification report. 
          The certificate shall be signed by the appropriate Quality
          Assurance representative.

12.4.2    The assemblies used for seismic testing or qualification shall
          not be used as a deliverable to the Owner.  These test
          specimens are previously fatigued and are not suitable for
          operation.

12.4.3    The equipment shall perform its intended function when exposed
          to the service conditions environment specified in Section 6.4. 
          A Certificate of Conformance shall be supplied.  This should
          state that the equipment will perform its intended function
          within the applicable accuracies when subjected to the
          environmental conditions identified herein.

13.0      CLEANING

13.1      Before testing and prior to shipping, relays shall be
          thoroughly cleaned to remove dust, debris and other foreign
          materials.  Cleaning agents used shall not damage finished
          surfaces or adversely affect material properties and function
          of equipment.

14.0      MARKING AND IDENTIFICATION

14.1      Each relay shall have a nameplate which identifies the model
          number, part number, serial number, coil voltage rating and
          manufacturing date.


Specification No.  S-C-RCP-EDS-0343
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Page 10

15.0      PACKAGING, HANDLING AND STORAGE

15.1      The packaging, handling, storage and preparation of relays for
          shipment shall be in accordance with ANSI N45.2.2 level B
          requirements.  Relays shall be thoroughly protected against the
          elements and damage during transit and storage.

15.2      Equipment contents, part numbers and the Owner's purchase order
          number shall be clearly marked on shipped packages.

15.3      Vendor shall provide to the Owner instructions for applicable
          storing and handling instructions.

16.0      DEFECTS AND NONCOMPLIANCES


16.1      The equipment covered by this Specification is safety related
          and is subject to the requirements of 10CFR Part 21 for the
          reporting of defects and noncompliances.

17.0      RECORDS

17.1      See Section 5.0 of this specification for all required
          documentation.

17.2      Qualification documentation and other correspondence related to
          the relays procured by this specification shall be retained by
          the Vendor for a minimum period of at least the equipment
          design life.  These records should be forwarded to PSE&G for
          retention if they will not be retained by the Vendor.

17.3      All records shall be reproducible end capable of being
          microfilmed.

18.0      OTHER REQUIREMENTS

18.1      The terms and conditions of any warranty for the relays shall
          be clearly defined by the Vendor.

19.0      RIGHT OF ACCESS

19.1      The Owner shall have access to all vendor and sub-tier
          facilities and records which are directly related to the relays
          procured by this specification.


Specification No.  S-C-RCP-EDS-0343
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Page 11

19.2      The Owner shall notify the Vendor seven (7) calendar days in
          advance of such inspections.

20.0      QA PROGRAM REQUIREMENTS

20.1      Suppliers of equipment to this specification are required to
          have a quality assurance programs which comply with the
          requirements of 10CFR50, "Quality Assurance Criteria for
          Nuclear Power Plants and Fuel Processing Plants," Appendix 5
          and ANSI N45.2.11-1974 and demonstrate implementation through
          audit and/or inspection by the Owner.

20.2      The Vendor shall comply with PSE&G standard specification 0.01,
          Quality Assurance Requirements for Suppliers.

20.3      The Vendor's Quality Assurance Program shall be documented and
          shall, be approved by the Owner prior to the award of the
          contract.

20.4      Inspection and witnessing of in-process testing shall to be
          made available at the Owner's discretion and dependent upon
          proper notification by the Vendor prior to the performance of
          in-process testing.  The Vendor shall notify the Owner's
          Quality Assurance Department by facsimile at (609) 339-7707 at
          least 72 hours prior to all vendor hold points.

20.5      Prior to shipment, the Owner has the option of performing a
          detailed inspection of the assembled relays.  This inspection
          shall not lesson the responsibility of the Vendor for the
          completeness and correctness of the modules.

20.6      Parts or materials indicating irremediable or injurious
          defects, improper fabrication, excessive repairs, and/or not in
          accordance with this specification, the QA program, or approved
          drawings shall be subject to rejection.  They shall also be
          subject to repair or replacement by the Vendor if such
          conditions are discovered after delivery at the Owner's
          facility.


Specification No.  S-C-RCP-EDS-0343
Revision 0
Page 12

21.0      RELAY SPECIFIC REQUIREMENTS

          Note: A site specific required response spectra (RRS) will be
          attached when required.  Reference Section 12.2.3.

21.1      219 Series 300 V General Purpose Plug-In Relay Specification
          Requirements

          219 Series Relay Physical Dimensions and Contact Arrangement

21.2      B255 Series 300 V Latching Plug-In Relay Requirements 

          B255 Series Relay Physical Dimensions and Contact Arrangement

21.3      219 & B255 Series Mating Socket Physical Dimensions


Specification No.  S-C-RCP-EDS-0343
Revision 0
Page 13

                              SECTION 21.1
219 Series 300 V General Purpose Plug-in Relay Specification Requirements

Reference:     Struthers-Dunn Commercial/Industrial Relays Catalog

Type 219BBXP:  Double-pole, double-throw plus 2 normally-open sets of
               contacts

Type 219ABAP:  Double-pole, double-throw plus 1 normally-open and 1
               normally-closed set of contacts

General Data:

Insulation:    1/4" surface, 1/8" air

Dielectric:    1500 VAC minimum

Operate Time:  25 ms maximum

Release Time:  20 ms maximum

Coil Data:

120 VAC Relay, 50-60 Hz, 5 VA:

Voltage:       102 - 132 VAC
Current:       75 mA open, 40 mA closed (typical)
Impedance:     2700 ohms (typical)
Resistance;    540 ohms +/- 10%

24/28 VDC Relays, 2.3 W at 25 degrees C:

Voltage:       19.2 - 30.8 VDC
Current:       77 mA hot, 915 mA cold (typical)
Resistance:    250 ohms +/- 10%

115/125 VDC Relays, 2.5 W at 25 degrees C:

Voltage:       90 - 140 VDC
Current:       16 mA hot, 20 mA cold (typical)
Resistance:    6200 ohms +/- 10%


Specification No.  S-C-RCP-EDS-0343
Revision 0
Page 14

                              SECTION 21.1
219 Series 300 V General Purpose Plug-in Relay Specification Requirements

Contact Data:

Composition:   Gold diffused silver cadmium oxide contacts unless
               specified otherwise 

120 VAC:       30 A make, 10 A carry, 10 A resistive break, 3 A inductive
               break

24/28 VDC:     30 A make, 10 A carry, 10 A resistive break, 3 A Inductive
               break

115/126 VDC:   30 A make, 10 A carry, 0.5 A resistive break, 0.1 A
               inductive break

Optional Features:

-    Indicator Lamp

-    Coil suppression


Specification No.  S-C-RCP-EDS-0343
Revision 0
Page 16

                              SECTION 21.1

Figure  "219 Series Relay Physical Dimensions and Contact Arrangement"
omitted.


Specification No.  6-C-RCP-EDS-0343
Revision 0
Page 16

SECTION 21.2
B255 Series 300 V Latching Plug-In Relay Requirements

Reference: Struthers-Dunn Commercial/Industrial Relays Catalog

Type B255XCXP: Three-pole, double-throw

General Data:

Insulation:    1/4" surface, 1/8" air

Dielectric:    1500 VAC minimum

Operate Time:  25 ms maximum, mechanically latches until reset coil is
               energized, even if power is interrupted

Release Time:  20 ms maximum, when reset coil is energized

Coil Data:

120 VAC Relay, 50-60 Hz, 5 VA;

Voltage:       102 - 132 VAC

Reset Coil (3 VA):

Current @ 60 Hz: 22.6 mA (typical)
Resistance:      1700 +/- 10% ohms

Operate Coil (5 VA):

Current @ 60 Hz: 75 mA open, 40 mA closed (typical)
Resistance:      540 +/- 10% ohms

24/28 VDC Relays, 2.3 W at 25 degrees C:

Voltage:         19.2 - 30.8 VDC

Reset Coil (1, 7 W):

Current:    70 mA (typical)
Resistance: 340 +/- 10% ohms


Specification No.  S-C-RCP-EDS-0343
Revision 0
Page 17

SECTION 21.2
B255 Series 300 V Latching Plug-In Relay Requirements

Operate Coil (2.3 W):

Current:       96 mA (typical)
Resistance:    250 + /- 10% ohms

115/125 VDC Relays, 2.5 W at 25 degrees C:

Voltage:       90 - 140 VDC

Reset Coil (, 7 W):

Current:       13.8 mA (typical)
Resistance:    9000 +/- 10% ohms

Operate Coil (2.5 W):

Current:       20 mA cold, 16 mA hot (typical)
Resistance:    6200 +/- 10% ohms

Contact Data:

Composition:   Gold diffused silver cadmium oxide contacts unless
               specified otherwise

120 VAC:       30 A make, 10 A carry, 10 A resistive break, 3 A inductive
               break

24/28 VDC:     30 A make, 10 A carry, 10 A resistive break, 3 A inductive
               break

115/125 VDC:   30 A make, 10 A carry, 0.5 A resistive break, 0.1 A
               inductive break

Optional Features:

-    Indicator Lamp

-    Coil suppression


Specification No.  S-C-RCP-EDS-0343
Revision 0
Page 18

                              SECTION 21.2

Figure "B255 Series Relay Physical Dimensions and Contact Arrangement:
omitted.


Specification No.  S-C-RCP-EDS-034-3
Revision 0
Page 19

                              SECTION 21.3

Figure "219 & B255 Series Mating Socket Physical Dimensions" omitted.


*** END OF DOCUMENT ***


Page Last Reviewed/Updated Thursday, March 29, 2012