ML17278B037
| ML17278B037 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 10/07/1986 |
| From: | WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | |
| Shared Package | |
| ML17278B036 | List: |
| References | |
| TAC-63052, NUDOCS 8610160074 | |
| Download: ML17278B037 (5) | |
Text
'(3 ELECTRICAL POWER SYSTEMS PRIMARY CONTAINMENT PENETRATION CONDUCTOR OVERCURREHT PROTECTIVE DEVICES LIMITING CONDITIOiN FOR OPERATION 3.8.4.2 All primary containment penetration conductor overcurrent protective devices shown in Table 3.8.4.2-1 shall be OPERABLE.
APPLICABILITY:
OPERATIONAL CONDITIONS 1, 2 and 3.
ACTION:
a.
With one or more of the primary containment penetration conductor overcurrent protective devices shown in Table 3.8. 4. 2-1 inoperable, declare the affected system or component inoperable and apply the appropriate ACTION statement for the affected system and:
1.
For 6. 9 kV circ'uit breakers,"de"energize the 6. 9 kV circuit(s) by tripping the associated redundant circuit breaker(s) within 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />sgnd verify the redundant circuit breaker to be tripped at least'-.once per 7 days thereafter.
2.
For 480 voltcircuit breakers, remove the inoperable circuit breaker(s) fromN service by removing the fuses within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and verify the"fuses associated with the" inoperable breaker(s) to be removed at. 1'east once per 7 days thereafter.
Otherwise, be in at least~HOT SHUTDOWN within he next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTOOWH within 'the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
b.
The provisions of Specification
- 3. O. 4 are not applicable to over current devices in 6. 9 kV circuits which have their redundant circuit breakers tripped or to 480 volt..circuits which have the fuses asso-
'iated with the inoperable circuit breaker removed.
SURVEILLANCE REOUIREMEHTS
.P.)
4.8. 4. 2 Each of the primary containment penetration conductor overcur rent protective devices shown in Table 3.8.4.2-1 shall be demonstrated OPERABLE:
a.
At least once per 18 months:
1.
By verifying that the medium voltage,
- 6. 9 kV, circuit breakers are OPERABLE by selec ing, on a rotating basis, at least 10 of the circuit breakers of each voltage level and performing:
a)
A CHANNEL CALIBRATION of the associated protective relays, and b) c)
An integrated sys em functional test which i'ncludes simulated automatic actuation of the system and verifying that each relay and associated circuit, breakers and overcurrent control circuits function as designed.
For each circuit breaker found inoperable during these functional tes s, an additional representative sample of at least IQ,o of all the circuit breakers of the inooerable type shall also be functionally tes ed until no more failures are found or all circuit breakers of that type have been func ionally tested.
WASHINGTON NUCLEAR - UNIT 2 3/4 8-21 8610160074 861007 PDR ADOCY, 05000397 P
I PDR
ELECTRICAL POWER SYSTEMS SURVEILLAHCE REOUIREMEHTS Continued) 2.
By selecting and functionally testing a representative sample of at, least 10K of each type of lower voltage circuit breakers.
Circuit breakers selected-for functional testing shall be selected on a rotating basis.
Testing of these circuit breakers shall consist of injecting a current with a value equal to 300 of the pickup of the longtime delay trip element and 150Ã of the pickup of the short time delay trip element, and verifying that the circuit breaker operates within the time delay band-width for that, current specified by the manufacturer.
The instantaneous element shall be tested by injecting a current equal to *20Ã of the pickup value of the element and verifying that the'circuit breaker trips instantaneously with no inten-tional time delay.
Molded case=cbcuit breaker testing shall also follow this procedure,except that generally no more than two trip elements, time delay,",and instantaneous, will be involved.
Circuit breakers found inoperable during functional testing shall be restored to OPERABLE status prior to resuming operation.
For each cipcu~t breaker found inoperable during these functional tests,'.'in additional representative sample of at least 10~ of all the~circuit breakers of the inoperable type shall also be function'a'lly tested until no more failures are found or all circuit"breakers of that type have been functionally testedi each type'.of~>use on a rotating basis.
Each represe ive sam f fuses shall include at least 10~ of all es of that type.
The tional test shall consist of on-destructive resistance measur
. t test which de rates that the fuse meets its manufacturer s
i eria.
Fuses found inoper able during these functi t 'hall be replaced with OPLRABLE fuses pri o resuming oper For each fuse found inoper during these functional tes an additional repres ive sample of at least 10" of all fuses hat type be functionally tested until no more failures are r C
b.
At leas once per 60 months by subjecting each circuit breaker to an inspection and preventive maintenance in accordance with procedures prepared in conjunction with its manufacturer's recommendat'ons.
WASHIHGTOH HUCLEAR " UHIT 2 3/4 8-22
TABLE 3.S".4.2-1 PRIMiARY CCNTAINMEi'IT'EtlETRATIONCONOUCTOR OVERCURRENT PROTECT!Vc DEVICES EQUI PHiENT a.
5900V Circuit oRC-P-lA RRC-P-18 b.
4SOVAC Fused PR it!ARY PROTECTION Breakers E-CB-RRA (Relay)
E-CB-RRB (Relay)
Disconnects BACI:Uo PROTECTION E-CB-S5 (Relay)
E-CB-f>2/5 (Relay)
E-CB-S6 (Relay)
E-CB-t32/6 (Relay)
C-V-72n" RC V<<72B RCC-7A CRA-FiN-
-2 RRC-V-676 RRC-Y-23B
. Rl CU-Y-102 RhCL<-Vr106 RRC-V-23A RVCU-Vr101 R'FICU-V 100 RCC-V-178 RCC-V-71C RCC-V-718 CRA-Ftf-1A-2 CRA-FN 1A-1 CRn-FN 2A 2 CRA-FN-2A-1 CPA-FN-SA CF.A-Fft-4A CRn-Ftl-SC
. CRA-Ftfr3A CRA-FtI-
-2 CRA-F '-18-.1 CP, r N-1C-1 p r ~ ~ rr
~
~.r.-r I'e C b - L
~
n I
MC 7C 125nF t'lC 7C MiC-SC 1.25AF HC-8C HC-7C
- 1. 125AF HC-7C I'iC-SB, 110AF t1C-88 MC-SC ';P 25AF HC-HC-SC v~/15AF H
SC NC-SC
~
SAF C-SC MC-SC
~P 3AF I'IC-SC
'C-8C
~-
1AF IIC-8C H
C
'+3A HCSC MC-FX HC-BC MC-SC 1.'25AF HC-SC MC-SC 1.2SAF NC-SC HC-BC 1.25AF,.y HC-SC MiC-78 100AF '>~pf~iC-78
...'C-1 AF
,t)C;78
-78 60A t"C.-78 C-78
'50AF MC-78 MC-78 25AF MC-78
. 'MC.-78 15AF
-76 HC-76 25A."
HC- "
HC-78 25AF i4IC-7B MC-88 100AF MC-GB NC-SB 100AF MC-SB HC-SB 100nF I'1C-SB hC-SB 150nF HC-SB 2SA F
25AF 200AF 90AF 25AF 25AF 25AF 25AF 25AF 25AF 25AF 25AF 25AF 200AF 200AF 90AF 300AF SOAF SOAF 50AF SCAF 200AF
'AF 20 F
30QAI-
"'S-V '6
."".i".-V-40
~ ~
~ 6 rr al ML'~.'~-
~ -/b hC-SBrA tiC-SB-A f'.C-SB nA hC-28-A I IC 58 A
t':C-26-A fIC-26rA
~ /
l)r
&V a r flC-SB hC-So hC-SB hC-SB HiC-SB fiC-SB flC-c,B 12SACB
! 25.-'.CB Al O AC, Qv 12=AC"=
EQUI PMEH7 PRIMARY. PROTFCTION BACYUP PROTECTION CRA-ri CRA-FN-3C CRA FH 48 l'.S-V-1 HS-'!-"
AC-SB MC-SB C-SC-8 MiC-SC-8 25AF 25AF F
1AF lAF MC-OAF
-SB 50AF MC-SB 25AF
-SC-8 25AF MC F RHR-V-123A biC-88-A
~%A"-
MC-SB 125ACB g~ A 3
S-Z"
ELECTRICAL POWER SYSTEMS 8ASES 3/4.8.4 ELECTRICAL EOUIPMEHT PROTECTIVE DEVICES Primary containment electrical penetrations and penetration conductors are protected by either deenergizing circuits not required during reactor operation or demonstrating the OPERASILITY of primary and backup overcurrent protection circuit breakers by periodic surveillance.
The surveillance requirements applicable to lower voltage circuit breakers aacL4u.~ provide)'ssurance of breaker ~~ reliability by testing at. leas one representative sample of edch manufacturers brand of circuit breaker. aa4~
Each manufacturer's molded case and metal case circuit breakers ~~
~ are grouped into representative samples which are thorn tested on a rotating treat each group as a separate
'type of breaker ~~~for surveillance purposes.
~J v~
The bypassing of the motor.operated valve thermal overload protection continuously or during accident condjtions ensures that the thermal overload protection will not prevent safety-related valves from performing their function.
The 'surveillance requirements for demonstrating the bypassing of the thermal overload protection continuously and during accident conditions are in accordance with Regulatory Guide 1.106 "Thermal Overload Protec ion tor
~ Electric Motors. on Motor Operated Valves,".Revision 1, March 1977.
WASHINGTON NUCLEAR - UNIT 2 B. 3/4 8-3