ML20154B572
| ML20154B572 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 09/09/1988 |
| From: | Kotkowski G PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | |
| Shared Package | |
| ML20154B444 | List: |
| References | |
| OL-1, NUDOCS 8809140052 | |
| Download: ML20154B572 (19) | |
Text
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TEST EQUIPMENT LIST Test Report #
Page NAME MFR.
MODEL SER.NO.
RANGE ACCURACY INV.#
CAL DATE Pressure Gauge US Gewy 1903 N/A 0 to 400 PSIG
+.51 span PI456 l
Pressure Omega PS906-150164 0 to 500 psig 1.4%
PI496 Transducer 500GV Digital Omega 199 19843
-245' F to 1999'T 1.5*F TI326 Temp. Indicator Fluidized Bath Teche F8-07 1063-18 100 to 600C il.*F TI336 212 to 1112*F Digital Temp.
OMEGA 650JK None
-245*F to 1999'T
+ 1*F TI358 Indicator
~-
Digital Tempera-Omega 650JX None
-245 to 1999'F tl.0*F TI359 ture Indicator Mescury Ertco ASTM 11C 45800 0 to 400*C Thermometer
-+ 1*C It364 l
Digital Temp.
Omega 650 JE Nr :e
-245 to 1999'F 11*F T1315 Indicator TC Temp.
Omega 650 JK None
-245 to 1999'F 11*F TI316 Indicator Thermocouple Omega Type J N/A
-300 te 1600*F
+2.2*C TP324 or _+.75%
Thermocouple Omega Type J N/A
-300 to 1600*F
+ 2.2*C TP334
- D' or _+.757.
G
TEST EQUIPMENT LIST Test Report #
Page NAME MFR.
MODEL SER.MO.
RANGE ACCURACY INV.#
CAL DATE Thermocouple Omega Type J N/A
-300 to 1600*F 22.2*C TP336 Probe or t.751 whichever is greater Thermocouple Omega Type J N/A
-300 to 1600*F 22.2*C TP337 Probe or t.75%
whichever is greater Dual Thermocouple Omega Type J None
-300 to 1600*F 12.2*C TP341 Probe 1.751 Thermocouple Omega Type J None
-300 to 1600*F
+ 2.2l*C TP343 Probe T.751 Thermocouple Omega Type J N/A
-300 to 1600*F 12.2*C TP344 Probe or t.751 1
j Dual Omega Type J N/A
-300 to 1600*F
+ 2.2*C or TP348 j
Thermocouple
+.751 Dual Omega Type J N/A
-300 to 1600*F
+ 2.2*C or TP349 Thermocouple T.751 1
1 J
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PCPETED UWC UNITED STATES OF AMERICA
'68 SEP 12 P1 :47 UNITED STATES NUCLEAR REGULATORY COMMISSION before the
($,
jj
- m..t ATOMIC SAFETY AND LICENSING BOARD
)
In the Matter of
)
)
PUBLIC SERVICE COMPANY
)
Docket Nos. 50-443 OL-1 NEW HAMPSHIRE, at al.
)
50-444 OL-1
)
(Seabrook Station, Units 1
)
(On-site Emergency and 2)
)
Planning and Safety
)
Issues)
)
)
AFFIDAVIT OF GERALD A.
KOTKOWSKI I,
GERALD A. KOTKOWSKI, being on oath, depose and say as follows:
1.
I am the Electrical Engineering Supervisor at Seabrook Station.
My responsibilities include the supervision of Electrical Engineering and Design activities and technical support of field / construction activities.
I am familiar with the applications of cables at Seabrook Station and the cable characteristics which contribute to signal transmission.
A statement of my professional qualifications is attached and marked "A".
2.
As provided in the accompanying Affidavit of Richard Bergeron, paragraph 16, twelve (12) nonsafety-related RG-58 1
cables (now spares) are located in harsh environments within l
t the Seabrook Station Unit 1 nuclear island.
The purpose of my affidavit is to show that, for these 12 applications, the
b i
RG-59 coaxial cable already purchased and qualified for use at seabrook Station is a technically adequate substitute for RG-58 coaxial cable.
3.
A review was performed to determine the applications of these twelve Rr.-58 cables and to determine if RG-59 cables were a technically adoquate substitute for thace 12 RG-50 cables.
(See Engineering Evaluation Number 88-014, l
"Raplacement of Coax Cable Type RG-58 By RG-59," Attachment B.)
As a result of the review, these applications can be categorized into two nonsafety-related/non-tssential groupings.
The first application grouping is of cables connecting intelligent remote termination units (IRTU) to the main plant computer system Host CPU.
The second application grouping is of cables connecting ultrasonic level sensors to
[
electrical control units for certain level measuring l
instruments.
In both cases the intended function of the cable is to transmit high frequency electrical signals.
4.
In determining the acceptability of RG-59 coaxial cable for these applications, an evaluation was made to assess the degradation of signal dus to insertion loss (attenuation) and i
variation in response time due to the change in the velocity l
of propagation.
These are the primary specifications that determine the wave propagation characteristics of l
transmission lines.
i l
i 5.
The velocity of propagation is the velocity of an electric wave governed solely by the properties of the dielectric medium and the permeability of the conductor through which it is transmitted.
In a coaxial cable the velocity of propagation is the ratio of the speed of electromagnetic energy flow compared to the speed of light and is generally referred to herein an a percentage (%).
The actual measured velocity of propagation provided in the typical factory cable test reports is 61.24% for RG-59 and 63.5% for RG-58.
The actual field cable lengths for these twelve applications are much less (approximately 1/4) than the maximum allowable cable lengths for the applicable operating frequency as recommended by the equipment vendors.
The minor decrease in the velocity of propagation (approximately 2.26%) in conjunction with the relatively I
short length of cable will not noticeably affect the rate of signal transmission.
6.
A review of factory test results for both hG-58 and RG-59 coaxial cables showed that the attenuation (i.e., db/100 l
ft.) for the RG-59 cable is less than that for the RG-58 cable.
(See Attachment B.)
Thus the RG-59 cable will have less insertion losses and will retain equal or better signal l
quality than the RG-58 cable for these twelve applications.
l l
7.
In addition, the compatibility of an RG-59 cable with the connecting devico/ instrument was evaluated.
In both I
'f 4
application groupings the characteristics impedance of the RG-59 is compatible with the requirements of the connecting device / instrument.
In addition, the respective equipment vendors were contacted and they confirmed that the use of RG-
{
59 was acceptable.
1 8.
Based on the foregoing, I have concluded thaw an RG-59 coaxial cable would be an acceptable oubstitute for the twelve nonsafety-related RG-58 cables located in harsh environments and within the nuclear island.
4
$4Yf lA
?-
_2 Gerald A. Kotkowski j
Dated:
September 9, 1988 f
Then personally appeared Gerald A. Ko tkows,ci, before and f
persona?.ly known to me, who, being first duly sworn, made oath that the foregoing statements are true to the best of his knowledge, information, and belief.
N'2 du h Zh Ikfek-NotaryPublicg My Commission Expires:
- f _3 4
KOTKOWSKI AFFIDAVIT ATTACHMENT A GERALD A. KOTKOWSKI Electrical Engineering Supervisor Education B.S.
Northeastern University June, 1974 Mr. Kotkowski joined PSNH in June 1982 as a Senior Electrien1 Engineer in the Engineering Services Department.
He was assigned to the Startup and Test Department as the Test Engineer for the 13.8 KV, 4160 Volt, 125 Volt DC Syst 1
and Diesel Generator Electrical Systems and as the Lead Electrical Distribution Test Engineer. Specific accomplishments include the preparation and performance of the pre-operational acceptance testo for the DC Distribution and Diesel Generator Systems.
Specific responsibilities included the review and approval of all design changes to the Distribution Systems and the subsequent implementation and testing of these changes.
Work Excerience In June 1986, Mr. Kotkowski was appointed to the position of Electrical Engineering Supervisor in the Engineering Department.
His current responsibilities include the supervision of Electrical Engineering and Design activities and technical support of field / construction activities.
He has overall responsibility for ensuring that the electrical design of the plant complies with the codes and regulations specified in the Seabrook FSAR.
Mr. Kotkowski came to PSNH from Power Technical Services where he was employod from June 1901 - April 1982 and was assigned as a Project Engineer to Boston Edison Company.
While in this position he had the overall responsibility for implementing an Emergency Response Facility program for the Pilgrim 1 Nuclear Station.
This program was designed to ensure technical adequacy and licensing compliance to current regulatory requirements, including NUREG-0696, NUREG-0700 and Regulatory Guide 1.97, Revision 2.
Between March 1978 and May 1981, Mr. Kotkowski was employed by Stone & Webster Engineering as an engineer in the Electrical Control Group.
While at Stone & Webster Headquarters in Boston he was assigned to the Electrical
Control Group on the Shoreham Nuclear Power Station Project as the engineer responsible for providing post accident instrumentation to reet the requirements of Regulatory Guide 1.97, Revision 2.
He also was designated as the cognizant engineer responsible for all controls associated with the Nuclear Steam Supply Systems as well as several other major I
modifications to Balance of Plant Systems.
While on a field assignment he was the only site representative for the Controls Division at the Shoreham Nuclear Power Station.
He assumed complete responsibility for the resolution of construction and startup problems on all instrumentation and controls associated with an 850 MW Boiling Water Reactor.
Specific responsibilities included:
medium and low voltage switchgear, motor control centers, protective relaying, control and relay panels, electronic
)J analog instrumentation, pneumatic control loops and i
instrumentation tubing.
He was also designated as the Interface Engineer between Nuclear Steam Supplier and the Architect Engineer.
Between December 1974 and February 1978, he was employed by General Atomic Engineering Company.
While on a field assignment he participated in the rise to power program at the Fort St. Vrain Nuclear Power Station.
Specific accomplishments includes tuning the major plant controllers, modifying the Plant Protective System and Overall Plant Control System as required to pass Reactor Scram and Turbino Trip testing, coordinating a task force to resolve the 1
Nuclear Regulatory ( Smmission's concerns on cable segregation, and eliminating spuriour control room alarms.
I I
While at General Atomic Headquarters in San Diego he was j
assigned to the Control and Electrical Department.
He was i
responsible for the design of instrumentatien and controls l
for systems associated with the operation or a nuclear power plant.
He prepared control and instrumentation diagrams, i
schematic diagrams, cable tabulations, and instrument specifications.
t Between December 1970 and October 1974 'tum was employed by Stone & Webster on a student co-operative basis where he received various assignments in the Electrical control Department.
l In summary, Mr. Kotkowski has fourteen (14) years experience in the electrical design and testing of nuclear i
power plants.
1
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KOTK0WSKI AFFIDAVIT ATTACHMENT B REPLACEMENT OF C0AX CABLE TYPE RG-58 BY RG-59 QNTENTS Engineering Evaluation Number 88-014
1 7
REPLACEMENT OF COAX CABLE TYPC RG-58 BY RG-59 By Nirmal K. Bhowmik - NHY May 2, 1988 i-Engineering Evaluation Number 88-014 r
I Prcoered By
' #! 4' 6/s, /41S
< n.,
S-
$ 2L.NY 7
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'(Dete)
RWiewed By A k /JfAlter m M 5 B 6 u~
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(%)
Appewed sy t////r/
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(Dete)
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1.0 PURPOSE i
The purpose of this evaluation is to determine if Coax Cable Type RG-58 can be replaced by RG-59 for certain applications in the Seabrook Station i
design.
[
f 2.0 SACKCROUND 7
2.1 The non-vital plant cable numbers listed under paragraphs 2.2 and 2.3 l
are Coax Cable type RG-58. These cables have been routed in A-train i
associated raceways in harsh environments.
Since the similarity l
qualification of RG-58 is being litigated for application in harsh i
i environoents, cable type RG-59 will be analysed f or replacement cable
{
i i
)
in this evaluation. Cable type RG-59 has been qualified by cest for
[
I harsh environments.
E i
2.2 Application # 1:
Cables FM3-JW5, FM3-JW5/1, FM7-JX1, FM6-JW5/1, L
t I
l FM4-JX1, FM4-JX1/1, FM7-JX1/1, and FM6-JW5 (Ref. Dwg. 310181 shts. JWS
& JX1) are used between intelligent remote termination units (IRTUs) j and the main plant computer eysten Host CPU.
These cables transsit at l
a pulse rate of 93.7 kha (93.7,16 bit kilo words per second).
i
)
2.3 Application #2:
Cables CU4-Y59/2, 3, 4, & 5 (Ref.dwg. 310671 shts.
i
)
E38/8) are used between ultra sonic level sensors and electric control I
i l
units for National Sonics level seasuring instruments, type 3005. The sensor consists of a transmitter and receiver transducers. The trans-mitter converts electrical signals (pulse @ 1 sha) to ultrasonte signals l
and transaits across the sensor gap to the receiver. The signal at f
I the receiver is converted to electrical signals (pulse e 1 sha) and l
transmitted to the control unit.
i 4 :
,~.-,n,.,_n._,--__.__n--n_,,,,.
n
-. n.m n v
3.0 08SCUSSRON 3.1 The intended f unction of thw cable as described under paragraph 2.2 &
2.3 is to transmit high frequency electrical signals. The maximum length of the cable that can be used at this f requency as recommended by the vendor is 2,000 feet for application 1 and 1000 feet for appli-cation 2.
The actuel naximun lengths of the field cables are 425 feet and 253 feet respectively. Degradation of signal due to insertion loss (attenuation) and variation of response time due to the change in the velocity of propagation are the prime concerns to be evaluated.
The attenuation and velocity of propagation are listed, compared, and evaluated under subsequent paragraphs 3.2 thru 3.8.
3.2 Refer to Specification ho.
9763-006-113-19 Rev. O f or the f ollowing itio rma tion:
Parameters KC-59 RC-58 Conductor Resistance 25.2
- 6.3 *
(ORMS per 1000 f t. Max.)
Loop Resistance 25 26 Center Conductor to Shield (ORMS per 1000 ft Max.)
capacitance 25.7 pf/ft Max.
37 pf/ft Max.
Characteristic 75 + 15 OKM
$0 +3 ORM
~
Impedance
-6 Velocity of Propagation 61.24%
- 65% (63.5% per test report)
Attenuation in db/100 ft
@ 10 KHZ l.5
- 1.74
- 50 MR2 3.15
- 4.31
- 100 MHZ 4.71
- 6.39
- 200 MMZ 7.55
- 11.02
- 300 MHZ 10.00
- 14.62
- 400 MRZ 11.92
- 15 Not specified in the Reference Specification, data typical f or cable type as documented in actual Factory Test Reports (Ref. P.O. 113-19 Site Data Packages).
3.3 Conductor Resistanco The total resistance based on allowable cable lengths with RG-58 l
8 for application Number 1 is 6.3 X 2000 = 12.6 OKMs.
1000 Application Number 2 is 6.3 X 1000 = 6.3 OHMS.
1000 Resistance based on actual lengths with RG-59 Application Number 1 - 25.2/1000 X 425 = 10.7 OHM i
Application Number 2 - 25.2/1000 X 253 = 6.37 OKM Conductor resistance contrib2tes to the characteristic impedance as discussed under paragraph 3.6.
l 3.4 Loop Resistance Loop Resistance also contributes to characteristic impedance as discussed l
under paragraph 3.6.
The loop resistance for RG-59 is 25 ORMs/1000 ft.
l c ompa red a 26 OKMs/1000 f t. f or RC-58.
3.5 Capacitance
I Reference specification specifies maximum capacitance per foot for the l
cable. Actual capacitance, less than the maximum specified is accep-table.
The specified capacitance for RG-59 is 25.7 pf/f t max. which is less than the specified value of 37 pf/f t max. fri RC-58.
The value of the capacitance contributes to the characteristic impedance and velocity of propagation as described under paragraph 3.6 and 3.7.
3.6 Characteristic Impedance:
The characteristic impedance, Zo is a complex number and is defined as:
Z, Reference Schaua's outline of theory and problem of Y
cransmission lines, Chapter 5 Zo
=
Where Z = Line impedance per unit length Y = Line admittance per unit length Line Impedance Z = R + jWL i
l Whero, R o Conductor Resistance in OHMS (Sco para. 3.3 of this evaluation]
t I
Ue2 P.
F = f requency in HZ L = Induction in Henries
[
Line Adatttance Y = G + jwe
[
Where G = Conductance in MOHS, reciptocal of the loop resistance (see paragraph 3.4)
{
C = Capacitance in farade (see paragraph 3.5) f I
l Therefore, characteristic impedance Zo can be written as i
i J R + j WL Zo = V G + jWC Inductance, L is not specified in the specification.
However, the
(
capacitance, loop resistance, conductor resistance, and the value of I
I the characteristic impedance have been specified (for both type of f
cables). These values are listed under parageaph 3.2 of this evaluation.
This impedanen contributes to the velocity of propagation and attenuation i
as discussed under paragraph 3.7 and 3.8.
3.7 Velocity of Propagation (VP)
The velocity of propagation (VP) is the velocity of an electric wave
{
governed solely by the properties of the dielectric medius and the j
permeability of the conductor through which it is transmitted.
In
[
f ree space the electromagnetic energy will travel with a speed of 3 X 108 meters per second or a 100 percent.VP.
In a coaxial cable with a uniform dielectric and a conductor with a relative permeability of 1, the VP is always less than 100 percent. Hence, the VP of a coaxial cable is the ratio of the speed of electromagnetic energy flow compared to the speed of light.
Velocity of energy in a cable dielectric medius X 100 Velocity of energy in free space j
=
I t
I
Volocity of propagation is invorsoly proportional to the product of characteristic impedance in OHMS (Zo) and capacitance in PICO Farads per ft. (C).
[ Reference IPCEA S-69-530 NEMA WC 41, January 21, 1975 and MIL-C-17F Amendment 2 Februa ry 18, 1986].
i. e.. V P aC Zo X C The actual measured value of VP is available f rom the test report for the cables. These values are 61.24% for RG-59 and 63.5% for RC-58.
The impact due to the increased value of characteristic impedance Zo of RG-59 (see paragraph 3.6) is mostly compensated by decreased value of the capacitance "C" (see paragraph 3.5).
The velocity of propagation determines the speed of transmission of the signal thru the cable.
A decrease in VP by 2.26% (63.5 - 61.24) will not create a time delay in signal transmission due to the f act that the actual field cable length is much less (about 1/4) than the nax. allow-able cable length for the applicable frequency of operation.
3.8 Attenuation
For high f requency applications the attenuation ( A ) can be expressed as follows:
A=
1/2 R
+
1,' 2 C Z o Zo (Reference, Schac1's outline of theory and problems of transmission lines i
Chapte r $1.
r The tested values for the attenuation at different frequencies are listed under paragraph 3.2 of this evaluation.
These test results show that the attenuation decreases with the frequency et application.
The lowest f requency available f rom the test results is 10 MM2.
At this 5-
f rcqu2ncy, RG-59 has an attenuation for 1.5 as compared to 1.76 f or RG-58. Theref ore, RG-59 has less attenuation than RG-58.
The impact of attenuation on the input and output of the signal transmitted is as follows:
Sirnal Output,,"
Signal Input Wh e r e, e = 2.71828 Attenuation in db/100 f t.
o(
=
X = Length of the cable (in 100's of it)
Tor comparison purposes, e-1.5 = 0.22 f or KG-59, whereas, e-l 74 = 0.17 for RC-$8.
This shows that cable type RC-59 having an attenuation of 1.5db/100 ft. has less insertion loss and vill retain better signal quality than RG-58 cable.
3.9 Adjusteent of Signal:
Deviation of signal, if any, due to replacement of cable RG-58 by RC-59 can be compensated by adjustment of potentiometer R1 (Reference MODCOMP d rawing 515-A00009.
R'.
A) for application 1 and by adjustment of gain potentfomater (Referene, T.P. 53758-09, Section 16) for application 2.
3.10 Vendor Confirmation:
In addition to above, the subject was discussed with the respective I
equipment vendor representatives. The confirmation f rom the vendors is documented in notes of telephone conversation attachment A & B.
4.0 CONCLt'StoN 4.1 Cable type RG-58 can be replaced by cable type RG-59 f or the app 11-cation centioned under paragraph 2.
5.0 RE EE RENCE S 5.1 Specification 9763-006-113-19 Rev. 0 _ _ _ _ _ _ _ _ -
1 5.2 C5Quterimod Conduit & Cable Sch:dulo Prograc (CASP), Dwg. 31(994., Rov. 20 5.3 D$ wing 310181, Rev. 34 5.4 Drawing 310891, Rev. 26 5.5 Site Data Packages for P.O. 113-19-01 5.6 IPCEA S-69-530, NEMA WC-41, January 21, 1975 5.7 Modular Computer System Technical Manual 225-900006-00 l
5.5 Foreign Print TP 51796-06 5.9 operation - Maintenance Instructions for Nuclear Degasifier, FP 53758-09 5.10 Schaum's outline series on theory and problems of transmission lines by Robert A. Chipsan 5.11 Telephone Conversation Notes, Attachment A & B i
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ATTACHMENT A i
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ENGINEERING EVALUATION NUMBER 88-014 l
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TORM 3516 REY. 1/74 V. C. Patel. Plant Eng., Seabrook CALL TROM: Station. P.O. tox 700. Seabrook DATE April 29, 1988 NH 03874 TIME 3:30 p.m.
TO: Bob Booker, Modcomp 1650 k*est McNab Road. P.O. Box 6099 JOB NO.
Tt. Ladderdale. FL 33310
$UBJECT: "Replacement of Cab'* Type RG-58 ORDER NO.
By RC-59" l
l In response to the inquiry on subject replacemant. Mr. Boekar checked Modecep Enrineering Dvr. No. 502-100018 Rev. A and verified Modeoep Part No. 335-100112 for Coax Cable Type RC-195 with characteristic impedance of 95 /llneminal).
Theref ore. Cable Type RC-58 havint characteristie impedance 50JrL can be replaced safely by cable Type RC-59 hyvint ehreseteristic f eredance of 75 JT.vithout re-placing Elan. terminating resister (Ref. Medecep Dvr. 515-A00009. Rev. A).
NOTES PREPARED BY
\\@
Vasant C. Pat * '
'/30/88 i
., s cet J. M. Varras 01/62 R.
terreren 01/62 C.
A. Y,etkovski 01/62 Bob Booker /Modeosp e
e 4
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1 ATTACMMENT B i
F ENGINEERING EVALUATION WCMBER 88-014 t
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(ORM 3516 RE'.'. 1/ 7 4 N. K. Shevcik, Plant Eng., Seabrook C ALL TROM: Station, P.O. Box 700, Seabrook, KR DATE April 29, 1988 03874 TIME 2:15 p.m.
TO: Toe 51tke, Neponset Control Inc.
13 Mechanic St., Texboro, MA 02035 JOB NO.
(617) 543-4801 1
SUBJE CT : "Replacecent of Cable Type RC-58 OPDER NO. 233-3 By RC-59" In respense to the inoutrv en subject replacecent, Mr. Blake consalted Mr. Oavid Ketliar Custecer Service Manarer, National Senies, New Yerk and confireed that cable type RC-59 with characteristic impedance 75JCL(necinal) can be used for custoner virine be
- he level senser and the centrol enit of National Sonics' level eensurier un, je 300s.
t NOTES rx.rARED BY, / If, 74f f.sc Nireal K. Ehev=ik, 04/30/85 eet J. M. Varras 01/62 R.
Bergeren 01/62 C. A. Ketkewski 01/62 Ten b*
ue. Nepenset ' Control, Inc.
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