ML20043H074

Proposed Tech Specs Re Replacement of 1,300 Hydraulic Control Unit Isolation Boundaries W/Four Newly Installed Isolation Boundaries on Common CRD Headers

ML20043H074
Person / Time
Site:	Limerick
Issue date:	06/14/1990
From:	PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20043H072	List: ML20043H071 ML20043H074
References
NUDOCS 9006210544
Download: ML20043H074 (4)

Text

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ATTACfMENT 2 LIMERICK GENERATING STATION UNIT 1 i

Docket No. 50-352 License No. NPF-39 .

TECHNICAL SPECIFICATION CHANGE REQUEST No. 90-01-1

List of Attached Pages Unit 1 3/4 6-23 3/4 6-41 3/4 6-43*  ;

• Included for information only I.

lI 9006210544 900614 r i PDR ADOCK 05000352 j- P PDC

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-" TABLE 3.6.3-1 (Continued)= .

PART A'- PRiFiARY CONTAINMENT. ISOLATION VALVES-2 m

u '

ISOL.~

INBOARD OUTBOARD PENETRATION ~ FUNCTION- ' ISOLATION. . ISOLATION. MAX.ISOL . SIGNAL (S), . NOTES ,P&ID' NUMBER ~ BARRIER BARRIER TIME.IF APP.. IF. APP.

(SEC)(26) (20)

B,H R.S 0288 SV57-133 5 11 57 DRYWELL H2/02 SAMPLE SV57-143 5 b,H,R,5 11 SV57-195 5 B,H,R,5 11

.0308 DRYWELL PRESSURE HV42-147A 45 10 42 INSTRUMENTATION

-TIP PURGE 59-1056(CK) NA 59

! 0358 (DOUBLE "0" RING)

HV59-131 7 B,H,S. 16 03SC-G TIP DRIVES XV59-141A-E NA B,H 11,16,21 59 l (DOUBLE "0" . RIP!G)

XV59-140A-E NA 11,16 1

CRD INSERT LINES BALL CHECK NA 12 47 037A-D 46-1101 NA 12,22 46-1102 NA 12,22 46-1108 NA 12,22 46-1109 NA ~ 12,22 CRD WITHDRAW LINES 46-1115 NA 12,22 47 038A-D

< SDV VENTS & DRAINS 46-1116 NA 12,22 46-1122 NA 12,22 46-1123 NA 12.22 XV47-1F010 25 3G XV47-1F180 30 30 XV47-1F011 25 30 XV47-1F181 30 30 DRYWELL $ PRAY HV51-IF021A(B) 160 4,11 51 039A(B) .

11 HV51-1F016A(B) 160 040E DRYWELL PRESSURE HV42-1470 45 10. 42 INSTRUMENTATION 040F-2 CONTAINMENT INSTRUMENT HV59-101 .45 C,H,5 5 59 GAS - SUCTION HV59-102- 7 C,H,5 LIMERICK - UNIT 1 3/4 6-23

• ~

TABLE 3.6.3-1

, PRIMARY CONTAINMENT ISOLATION VALVES NOTATION NOTES

.l.. Instrumentation line isolation provisions consists of an orifice ano excess flow-check vaive or remote manual isolation valve. The excess flow-check valve is subjected to operability testing, but no Type C test is performed or required. The line does not isolate during a LOCA and can leak only if the line or instrument should rupture. Leaktightness of the lina is verified during the intergrated leak rate test (Type A test).

2. Penetration is sealed by a blind flange or door with dcuole 0-ring seals.

These seals are leakage rate tested by pressurizing-between the 0-rings.

-3. Inboard. butterfly valve tested in the reverse direction.

4. Inboard gate valve tested in the reverse direction.

5. Inboard globe valve tested in the reverse direction.

6. The MSIVs and tnis penetration are tested by pressurizing oetween the.

valves. Testing M the inboard valve in tne reverse airection tends to unseat the' valve and is therefore conservative. The valves are Type C tested at a test pressure of 22 psig.

7. Gate valve tested in the reverse direction.

8. Electrical penetratiors are tested by pressur! zing between the sea'Is.

9. The isolation provisions for this penetration consist of two isolation valves and a closed system outside containment. Because a water seal is maintained in these lines by the safeguaro piping fill system, the inboard valve may be tested with water. The outboard valve will-be pneumatically tested.

10. The valve does not receive an isolation signal out remains open to measure containment conditions ;ost-LOCA. Leaktightness of the penetration is verified during the Type A test. Type C test is not requireo. ,

11. All isolaticn ba riers are located outs:ce containment.

12. l.eakage monitoring of the control rod drive insert and withdraw line is provided by Type A leakage rate test. The outboard isolation provisions for the control rod insert and withdraw lines consists of two redundant Type C tested simple check valves located on each m3in water header (i.e.

charging, cooling, drive arid exhaust). Type C test is not required for the ball check valve.

13. The motor operators on HV-13-109 and HV-13-110 are not connected to any power supply.

'14 Valve is provided with a separate testable seal assembly, with double concentric 0-ring seals installed between the pipe flange and valve flange facing primary containment. Leakage through these seals is Mcluded within the' Type C leakage rate for this penetration.

\

I U MERICK UNIT 1 3/4 6 t

TABLE 3c6.3-1 PRIMARY' CONTAINMENT ASOLATXON VALVES

.~ N TAUON FO R. IN FOR.M A T ION

= NOTES (Continued)

ON W

21. Automatic isolation signal causes TIP to retract; ball valve closes when probe is fully retracted.

22. Isolation barrier remains water filled or a water seal remains in the line post-LOCA. Isolation valve may be tested with water. Isolation valve leakage is not included in 0.60 La total Type B & C tests.

23. Valve'does not receive an isolation signal. Valves will be open during Type A

. test. Type C test not required.

24. Botn isolation signals required for valve closure.  ;

25. Deleted.

26. Valve stroke times listed are maximum times verified by testing per

$pecification 4.0,5 acceptance criteria. The closure times for isolation valves in lir.es in which high-energy line breaks could occur are identified with a single asterisk. The closure times for isolation valves in lines which provide an open path from the containment to the environs are identified with a double asterisk.

27. The reactor vessel head seal leak detection line (penetration 29A) excess flow check valve is-not subject.to OPERABILITY testing. This valve will not be exposed to primary system pressure except under the unlikely conditions of a seal failure where it could be partially pressurized.to reactor pressure. Any leakage path is restricted at the source; therefore, this valve need not be .

OPERABILITY tested.

28. Automatic isolation logic to be added by the end of the first refueling outage.

29. Valve may be'open during normal operation; capable of manual isolation from control room.- Position will be controlled precedurally.

30. Valve normally open, closes on scram signal,

31. Valve 41-1016 is an outbourd isolation barrier for penetrations X-9A, 8 and X-

44. Leakage through valve 41-1016 is includeu in the total for penetration X- *

'44 only. *

32. Feedwater long-path recirculat. ion va.lves are sealed closed whenever the reactor

'is critical and reactor pressure is greater than 600 psig. The valves are expected to be opened only in the following instances:

a. Flushing of the condensate and feedwater systems during plant startup.

b. Reactor pressure vessel hydrostatic testing, which is conducted following each refueling outage prior to commencing piant startup.

Therefore, valv.e stroke timing in accordaNe with Specification 4.0.5 is not required.

33. Valve also constitutes a Unit 2 Reactor Enclosure Secondary Containment Automatic Isolation Valve and Refueling Area Secondary Containment Automatic Isolation Valve as shown in Table 3.6.5.2.1-1 and Taole 3.6.5.2.2-1 respectively.

LIMERICK - UNIT 1 3/4 6-43 Amendment No. 23 l

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