ML20081L228
| ML20081L228 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 06/27/1991 |
| From: | ENTERGY OPERATIONS, INC. |
| To: | |
| Shared Package | |
| ML20081L225 | List: |
| References | |
| NUDOCS 9107030085 | |
| Download: ML20081L228 (5) | |
Text
-
1 PROPOSED TEC181 CAL SPECIr1DAT10N CllANGES 1
9107030085 910627 PDR ADOCK 05000368 P
PDR l' -,,n v.,m-
_.n.,,, _, _,,,,,., _,,, _,,
LLECTRicAL_tgWLR SYSTEMS CONIAINilLNIEfiLIRAIJON CONDMU10RRf1GUREMI_l'RRILG11YL11FJLCES LltilIING,COSDII10Sl0RRERAT10N _
3.8.2.5 All containment penetration conductor overcurrent protective devices shown in Table 3.8-1 shall be OPERABl.E.
At&lCAD1LITY:
MODES 1, 2, 3 and 4.
bG110N:
With oe, or more of t he cont ainment penetration conduct or overcur rent protective devices shown in Tnble 3.8-1 inoperable:
n.
De-energize the circuit (s) by t ripping thn associnted bnckup circuit breaker within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and verifying the backup circ.iit breaker to be tripped at least once per 7 days therenfter; the provisions of Specification 3.0.4 are not applicable to overcurrent. devices in circuits which have their backup circuit breakers t rippnd, or b.
He in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> ani in COLD SilVTDOWN wIthin the foilowing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
EURYEILLANCEJEQUIKfJiENIE___
4.8.2.5 All containment penetration conductor overcurrent protective devices listed in Table 3.8-1 shall be demonstrated OPERABLE in accordance with the I
manufacturerr.' recommendations:
a.
At least once per 18 mon t. tis :
1.
For at least one 6.9 kV react or coolant pump circuit, such that all reactor coolant pump circuits and their associated backup circuit s are demonstrated Op0kABl.E at least once each 72 months by performance of:
(n) A ca librat ion of the assoc int ed ptot ect ive relays to verify the rnnge, necuracy, and ninim/ t r ip capabilit y, and (b) A functionn1 test which includes verificat(on ihnt the protective device trips when its associated overcurrent.
element actuates, if any protective device falls to function as designed, all other protective devices of the same type shall be tested.
2.
For each type of 480 volt air frame protectivo device, such that all 480 volt air frame protective devices are demonstrated OPERABLE nt least once each N x 18 months, where N is the number of devices of each type, by performance of:
(n) A calibration of the protect ive relnys for devices that are actuat ed by protect ive relnys which includes verificat. ion of the range, accurncy, and alarm / trip capal ility, and ARKANSAS - UNIT 2 3/4 8-11 Amendment No. Jt),
fLLCTRICAldTMELEISKtlS i
SVE YEILLANck KLQM RfJiESIS_1 Corttittu e O___._
(b) A functional test of piot ect ive devices thnt are actuated by protective relays which verifies that the protective device t rips when its associnted protective relays actunte, and (c) A functional test which consists of injecting primary current in each overturrent eletnent mount ed on the protectivo device nt. the specified setpoint and verifying that the protective devi.cn ttips when each overturrent element actuates.
If any protective device fails to f unct ton as designed, all other protect.ive devices of the u me type shn11 he tested.
3.
For molded enne protective devices, such that all protective devices of each t ype are demon <.t rat ed OPERABI.E at. least once each N x 18 months, where N is the number of devices of ench type, by performance of:
(n) A functional test of at least one protectivo device of ench type which consists of injection of primary current at the specified setpoint to the protective device and verifying that the protective device trips when the overcurrent elements are actunted.
If any protective device fnils to funct.lon ns designed, all other protective devices of the same type shall be tested.
h.
At least once per 60 months, by performing inspections and prevent ive maint ennnce on each protective device in accordance with procedures prepared in conjunction with its manufacturer's recommendations.
ARKANSAS - UNIT 2 3/4 8-12 Amendment No. 75,
~..
~
TABLE 3.8-1 (Continued)
CONTAINMENT PENETRATION CONDUCTOR OVERCURRENT PROTECTIVE DEVICES Primary Backup I,ocation Device Device of System Number Number Dev_ ices Powered 52-61F2 5 2-6 1116 MCC 2B61 Safety inject.
Tank 2T2C Discharge MOV 2CV-5043-2 52-61G2 52-61K8 MCC 21161
' Check Valve Leakage Drain Valve 2CV-5106-2 52-31G1 52-31G2 HCC 2B31 Pzr Spray Isolation Valve 2CV-4654 52-41F4 52-41F5 HCC 21341 Pzr Spray Isolation Valvo 2CV-4656 t
I l
l l
ARKANSAS - UNIT 2 3/4 8-17a Amendment. No. 35, fil,
3/4.8 ELECTRICAL POWER SYSTEMS BASES The OPERABILITY of the A.C. and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety-related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.
The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation.
The OPERABILITY of the power sources are consistent with the initial condition assumptions of the accident analyses and are based upon maintaining at least one redundant set of onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C. source.
The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution systems during shutdown and refueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the unit status.
The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory Guides 1.9 " Selection of Diesel Generator Set Capacity for Standby Power Supplies", March 10, 1971, and 1.108 " Periodic Testing of Diesel Generator _ Units Used as Onsite Electric Power Systems at Nuclear Power Plants".. Revision 1 August 1977.
Containment electrical penetrations and penetration conductors are protected by either de-energizing circuits not' required during reactor operation or by demonstrating the OPERABILITY of primary and backup overcurrent protection circuit breakers during periodic survelliance.
Each overcurrent element associated with a protective device is tested in accordance with the manufacturers' recommendations to ensure that the protective device functions as designed when each overcurrent element is actuated.
The 6.9 kv reactor coolant pump protective devices utilize r
protective-relays,as overcurrent elements.
The protective device trips when its associated overcurrent elc. ment actuates.
The 480 volt air frame protective devices utilize electro-mechanical overcurrent elements which are mounted on the protective device and, in some instances, protective relays to trip the protective device. Actuation of each overcurrent element will trip the protective device.
The molded case protective devices utilize magnetic or thermal-magnetic overcurrent elements which are contained in the protective i-dev3ce. Actuation of each overcurrent element will trip the protective device.
ARKANSAS - UNIT 2 B 3/4 8-1 knendment No.
l-L
-