ML18052A168

Proposed Tech Specs,Upgrading Range of Subcooling Margin Monitor & Qualification & Readout Capability of Core Exit Thermocouples to Satisfy Generic Ltr 82-28, Inadequate Core Cooling Instrumentation Sys.

ML18052A168
Person / Time
Site:	Palisades
Issue date:	11/21/1985
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18052A167	List: ML18052A166 ML18052A168
References
GL-82-28, NUDOCS 8511270064
Download: ML18052A168 (4)

Text

ATTACHMENT Consumers Power Company Palisades Plant Docket 50-255 PROPOSED PAGES PROPOSED TECHNICAL SPECIFICATIONS CHANGE REQUEST DETECTION OF INADEQUATE CORE COOLING November 21, 1985 I

I .

85112700.64 851.121-. .

~DR. ADOCK 0500:~5~5 .*

i1 3 pages IC1185-0326-NL04

• Table 3.17.4 (cont'd)

Minimum Minimum Permissible Operable Degree of Bypass No Functional Unit Channels Redundancy Conditions

8. Pressurizer Water 2 1 Not required in Level (LI-0102) Cold or Refuel-ing Shutdown

9. Pressurizer Code 1 per None Not Required Safety Relief Valves Valve Below 325°F Position Indication (Acoustic Monitor or Temperature Indication)

10. Power Operated Relief 1 per None Not required When Valves (Acoustic Valve PORV Isolation Valve Monitor or Temperature Is Closed and its Indication) Indication System is Operable

11. PORV Isolation Valves 1 per None Not required When Position Indication Valve Reactor is Depressurized and Vented Through a Vent i?:l.3 sq in I

12. Subcooling Margin 1 None Not Required Monitor Below 515°F

13. Auxiliary Feed Flow 1 per None Not required Rate Indication Steam below 325°F Generator

14. Auxiliary Feed Pump 1 pe/e) None Not Required Auto Initiation Pump below 325°F Circuitry

15. Excore Detector 1 (f) None None (e) With one auxiliary feed pump automatic initiation circuit inoperable, in lieu of the requirement of 3.17.2, provide a second licensed operator in the control room within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. With both inoperable, in lieu of following the requirements of 3.17.2, start both and maintain in operation the turbine driven auxiliary feed pump.

(f) Calculate the Quadrant Power Tilt using the excore readings at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> when the excore detectors deviation alarms are inoperable.

3-81a Proposed TSP1185-0003-NL02

• Table 3.17.4 (Cont'd)

Minimum Minimum Permissible Operable Degree of Bypass No Functional Unit Channels Redundancy Conditions

16. Containment Pressure 1 *None Not Required (PT-1805A and PT-1812A) Below 210°F

17. Containment Sump 1 None Not Required Water Level Below 210°F (LT-0382 and LT-0383)

18. Containment Floor 1 None Not Required Water Level Below 210°F l['\

(LE-0446A and LE-0446B) co (Y"l

19. Gaseous Containment 1 C\J None Not Required .........

l['\

Monitoring System Below 210°F (RE-1817) (g) 'd Q) ti.I 0

Containment Humidity Not Required p..

20. 3 None 0 Detectors Below 210°F J..t p...

(HT-1812, HT-1813, HT-1814, HT-1815)

21. Containment Air Cooler 3 None Not Required Condensate Level Switches Below 210°F (LS-0817, LS-0865, LS~0868, LS-0870)

22. Core Exit Thermocouples 2/Core i 1/Core Not Required in Quadrant( ) Quadrant Cold or Refueling Shutdown rrj Q) l['\

(g) Three of the four supply valves (SV-1819, 1820, 1821, and 1822) to ti.I co 0 .........

RE-1817 must be operable with their associated containment air cooler p.. (Y"l 0 C\J fan (A or B) in service. J..t ........_

p... 1.0 (h) (Footnote submitted in change request of October 28, 1985.)

(i) The core exit thermocouples in core locations (H2, G7, J7, JlO), (Q4, R7, R&, Nll), (M13, X14, Q16, Rl7) and (B13, H13, Jl6, G17) are to be used in determining the minimum channels operable requirement.

3-8lb Proposed TSP1185-0003-NL02

TABLE 4.1. 3

• Minimum Frequencies for Checks, Calibrations and Testing of Miscellaneous Instrumentation and Controls (Contd),

Channel Descri~tion Function Fre9uenc:t: Surveillance Method (6)

23. Core Exit Thermocouples a. Check M a. Comparison of Channels

b. Calibrate R b. Known voltage substituted for thermocouple (6) Only applicable to core thermocouple in core locations H2, G7, J7, JIO, Q4, R7, RB, Nll, Ml3, Xl4, Ql6, Rl7, Bl3, Hl3, Jl6 and Gl7.

4-llb Proposed TSP1185-0326A-NL04