ML20101Q623
| ML20101Q623 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 07/07/1992 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20101Q620 | List: |
| References | |
| NUDOCS 9207150033 | |
| Download: ML20101Q623 (4) | |
Text
,.j; ATTACHMEN1 2 LIMERICK GENERATING STATION Unit 2 Docket No. 50-353 License No. NPF-85 PROPOSED TECHNICAL SPECIFICATIONS CHANGES No. 92-07-2 e
List of. Attached "Pages Unit 2 3/4 6-23 3/4 6-41' 3/4 6-43*-
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- Included for information only
-9207150033 920707-ADOCK0500g3-
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,sa iTABLE 3.6i3-1'(Continued)).,
..PARF A?- PRIMARY CONTAINMENT ISOLATION VALVES p
INBOARD,
20UTBOARD
. ISO L. -
"PENElRATION rVHCTION ISCLATION ISOLATION-MAX.ISOL_
- $1GNAL(S'j,-
NOTES P&IDL
' NUMBER -
-BARRIER
? BARRIER-
. TIME.IF AP?.
IF. APP.
~ (SEC)(26)
-(20) f
~SVS7-233 5
B H,R,S 11 57 l0288
. DRYWELL.H2/02 SAMPLEa SV57-243 5..
B,H,R,S.
11 SV57-295 51
- B,H,R,S 11
'0308-1 DRYWELL-PRESSURE HV42-247A:
45 10
~ 42 4
INSTRUMENTATION c.035B TIP PURGE 59-2056(CK)~
NA 59.-
-(DCUBLE "0". RING)
- HV59-231
'7 B.H.S 16 i.,035C-G TIP DRIVES XV59-241A-E' NA B,H 11,16,21 59 (DOUBLE "0" RING)'
NA 11,16 XV59-240A-E
)
037A-D; CR0 INSERT" LINES-BALL CHECK NA 12 47' 46-2101 NA 12,22-46 46-2102 NA 12,22 46-2108 NA 12,22 46-2109 NA 12,22
'C38A-D CRD. WITHDRAW LINES 46-2115 NA 12,22 46 SDV VENTS L' DRAINS' 46-2116 NA 12,22 46-2122 NA 12,22 46-2123 NA 12,22 XV47-2F010 25 30 47 XV47-2F180' 30 30-XV47-2F011-25 30 XV47-2F181 30
' 30
'039A(B)
DRYWELL SPRAY HV51-2F021A(B) 160 11 160 4,11 51
.HV51-2F016A(B) 040E DRYWELL PRESSUR'E HV42-2470 45 10 42 INSTRUMENTATION 04CF-2 CONTAINMENT-INSTRUMENT HV59-201 45 C.H,5 5
59-GAS - SUCTION HV59-202-7 C,H,S LIMERICK - UNIT 2 3/4 6-23:
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_ TABLE 3.6.3 y
. PRIMARY CONTAINMENT ISOLATION VALVES
?'.
NOTATION NOTES.
1.
Instrumentation line-isolation - wisions consists of an orifice and excess flow-check valve or remote manuai 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 curing a LOCA and can leak only if the'line or instrument should rupture. Leaktightness of the line is
~
_ verified-during the intergrated leak rate test (Type'A test).
2.
Penetration is sealed by a blind flange or door with double 0-ring seals.
These-seals are leakage rate tested by pressurizing between the 0-rings.
i3.
Inboard butterfly valve tested in the reverse direction.
- 1
- 4.--
Inboard gate valve-tested in the reverse direction.
5.-
Inboard globe valve tested _'in the reverse direction.
6.
The MSIVs~and1this penetration are tested by pressurizing between the valves. Testing of the inboard valve in the reverse direction 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.
-82 l Electrical penetrations are tested by pressurizing between the seals.
-9.L The isolation' provisions for this penetration consist of twe isolation
. valves and a closed system _outside containment. Because a water seal is
- maintained in these lines by the safeguard 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 but remains open to measure containment conditions, post-LOCA. Leaktightness of the penetration is verified:during the Type A-test. Type.C test is not required.--
>11..All' isolation barriers'are located outside containment.
_12..._ Leakage monitoring of'the control rod drive insert and withdraw line is.
pro.vided by Type A leakage rate test. The outboard-isolation provisions ifor the-control = rod ins'ert and withdraw lines consists of'two redur. dant Type:C-tested simple check valves located on each main water header (i.e.
(charging, cooling,driveandexhr.ust). Type C test'is not required for the ball check valve.
313L :The motor ; operators on HV-13-109 and HV-13-110 are not connected to any power. supply.
<1,4. ;Valveiis provided with a separate testable seal assembly, with double concentric 0-ringeseals installed between the pipe flange and va'1ve flange L
facing primary. containment. Leakt.ge through these seals is. included within the Type C-leakage rate for-this penetration.
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IllH$NICKL-UNIT 2 3/4 6-41
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FOR INFORMATION ONLY TABLE 3.6.3-1
'h PRIMARY CONTAINMENT ISOLATION VALVES NOTATION NOTES (Continued) 21.
Automatic isolation signal causes TIP to retract;' ball valve closes when probe is fuily 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.
Both isolation signals required for valve closure.
25.
Deleted 26.
Valve stroke times listed are maximum times verified by testing per Speci-fication 4.0.5 acceptance criteria.
The closure times for isolation valves in lines 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 con-ditions of a seal f'ailure where it could be partially pressurized to reactor pressure, Any leakage path is restricted at the source; therefore, tnis valve need not be OPERABILITY tested.
28.
(DELETED) 29.
Valve may be open during normal operation; capaHe of manual isolation from control room.
Position will be controlled procedurally.
- 30.
Valve normally open, closes on scram signal,
- 31.. Valve 41-2016 'is an outboard isolation barrier for penetrations X-9A, B and X-44.
Leakage through valve 41-2016 is included in the total for penetration X-44 only.
-32.
Feedwater long path recirculation valves are sealed closed whenever the reactor is critical and reactor pressu_re is greater than 600 psig.
The valves are expected to be opened only in the follouing instances:
Flushing of the condensate and feedwater systems during plant startup, a.
b.
Reactor pressure vessel hydrostatic testing, which is conducted follow-ing each refueling outage prior to commencing plant startup.
Therefore, valve stroke timing in accordance with Specification 4.0.5 is not required.
33.
Valve also constitutes a Unit 1 Reactor Enclosure Secondary Containment Automatic Isolation Valve and a Refueling Area Secondary Containment Automatic Isolation Valve as shown in Table 3.6.5.2.1-1 and Table 3.6.5.2.2-1,
.respectively.
34 Isolation signal causes recombiner to trip; valve closes when recombiner is not operating.
AUS 2 5 m3
-LIMERICK - UNIT 2 3/4 6-43
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