ML20003H759
| ML20003H759 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/30/1981 |
| From: | NORTHEAST UTILITIES |
| To: | |
| Shared Package | |
| ML20003H758 | List: |
| References | |
| PROC-810430, TAC-11290, NUDOCS 8105070404 | |
| Download: ML20003H759 (17) | |
Text
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'N L,1 Docket No. 50-336 AttacPaent 1 Millstone Nuclear Power Station, Unit No. 2 Inservice Testing Program Revised Pages o
April,1981 810 5070//dy
April 1981 OPERATIONAL READINESS TESTING FOR VALVES The attached tables include all valves in the Millstone Unit No. 2 plant which are required to be identified under Subsection IWV of ASME Section X1, Summer
'75 Addenda, as further defined in NRC Staff Guidelines and in meetings with NRC Staff Reviewers, NNECO and NUSCO personnel.
All of the valves are presently under surveillance testing requirements of Plant Technical Specifications or administratively controlled by plant regulations or requirements.
In some cases, the specific requirements of IWV cannot be met due to plant design, operational requirements, or infringements on safety mar-gins. These situations are noted, as required, and pertinent relief requests, with alternate test schemes are presented.
Valves which cannot be tested while the reactor is at power can, for the most part, be tested during cold shutdowns. NNECO has established a program to commence testing these valves within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> of achieving cold shutdown conditions, and to continue as time permits on subsequent shutdowns without repeating a specific valve test until the entire list is completed.
It is the position of NNECO that the operating status of a valve including certain deviations from required stroke times is best determined by plant man-agement after an Engineering and Operations review of test data. NNECO there-fore requests relief from those requirements of IWV-3410 (c) (3) and IWV-3410 (g) which require an increased schedule of testing and/or the declaring of a valve out of service.
NNECO has determined the ASME PTC 25.3-1976 to be more suitable than PTC 25.2-1966 in the inservice testing of relief and safety valves in that the 1976 version has a specific section (4.09) which was designed to ensure service readiness for valve set pressure and operation. The earlier code was designed to demonstrate total valve conformance to Code and/or purchase specifications.
The 1976 Code includes the material in the 1966 Code and also extends and supercedes that document.
The additional guidelines of the 1976 Code provide more options to ensure the operational readiness of safety and relief valves.
IWV-3520 (c) Check Valve rests - Corrective Action - requires that a valve be declared inoperative if test requirements cannot be verified within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of test performance. NNECO intends to implement this paragraph by stating corrective action in the specific valve test procedures. Unsatisfac-tory test results may or may not lead to an " inoperative" status, depending upon an engineering evaluation and disposition of test data by plant mangement.
4.
April'1981 SYSTEM: CONTAINMENT ISOLATION (Cont'd)
Basis for Relief:
Operation of this valve during plant operation would cause undesirable thermal transients on the regenera-tive heat exchanger. This component has a limited number of design thermal transients.
Alternate Testing:
Exercise (full stroke) and measure stroke time during cold shutdown.
4.
Valves:
See List of Containment Isolation Velves Category:
A AE l
Class:
2 Function:
To insure containment integrity in event of requirements to isolate.
Test Requirement:
Exercise valves quarterly and determine leak tightness not less than once every two years.
Basis for Relief:
This list consists of valves.whose only safety function is containment isolation. These valves are and have been leak tested under Tech. Spec. requirements using Appendix J to 10CFR50, Type C tests.
See MP2 Tech. Spec's. 3.6.1.2.
Millstone Unit 2 requests relief fro'm paragraph IWV-3420 (a-e) in that the intent is met by the Appendix J requirements.. Passive or locked valves, which are nor-mally closed, thus in their safety position, are not required to open to mitigate the consequences of an accident or to safely shutdown the plant. Therefore, the operability of these valves is inconsequential with regard to the safety function which they perform.
Millstone Unit 2 requests relief from the exercise requirements for the following passive / locked valves.
2-S1-463 2-RW-21 2-RW-154 2-AC-4 2-AC-6 2-S1-709 2-RW-53 2-RW-232 2-AC-5 2-AC-7 2-SA-19 2-AC-46 2 AC-51 Alternate Testing:
Leak Test the containment isolation valves under tech-nical specification requirements using Appendix J to 10 CFR50 type tests.
There is no exercising requirement for passive valves.
l
- l
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April 1981 SYSTEM: CONTAINMENT ISOLATION (Cont'd) 5.
Valve:
2-SI-651 Category:
A Class:
1 Function:
Isolate shutdown cooling system piping from Reactor Coolant System.
l Test Requirement:
Exercise and measure stroke time every three months.
Basis for Relief:
Valves are locked closed when Reactor Coolant System pressure exceeds 300 PSIG to protect the low pressure shutdown piping. Valve exercise would require violation of plant interlocks.
Alternate Testing:
Exercise and measure stroke time during cold shutdown when Reactor Coolant System pressure is less than 300 PSIG.
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Feedwater 25203-26126, Sh. 4 2-W-5A 2BC l Feedwater to S.G. 1 18 STOP A0 0
Q X
QCS CK MT 20 Sec.
FT X
FTCS 2-W-5B 2BC Feedwater to S.G. 2 18 STOP A0 O
Q X
QCS CK MT 20 Sec.
FT X
FTCS 2-W-7 3C Steam aux. pp. discharge 6
CK C
Q X
QCS 2-W-8A 3C Aux. pp. A discharge 4
CK C
Q X
QCS 2-W-8B 3C Aux. pp. B discharge 4
CK C
Q X
QCS 2-W-12A 2BC Aux. feedwater to S.G. 1 6
,Stop A0 C
Q X
QCS CK MT 20 Sec.
FT X
FTCS 2-W-12B 2BC Aux. Ibedwater to S.G. 2 -
6.
Stop A0 C
Q X
QCS CK MT 20 Sec.
FT X
FTCS 2-W-32A 3C Aux. W pump A recire. check 1.5 CK C
Q 2-W-32B 3C Aux. W pump B recire. check 1.5 CK C
Q 2-W-33 3C Terry Aux. W pump recire. check 1.5 CK C
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Aux. W reg. valve to No.1 S.G.
4 GL MO C
Q MT 30 Sec.
2-W-43B 3B Aux. W reg. valve to No. 2 S.G.
4 GL M0 C
Q 30Sec.l MT 2-W-44 3B
. Aux. W pump dis e cross tie 6
GA M0 C
Q MT 10 Sec.
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. Aux. W reg. valve by pass 6
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2-W-56B 3B Aux. W reg. valve by-pass 6
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Q 2-SW-1B 3C SW pump B discharge check 24 CK 0
Q 2-SW-lC 3C SW pump C discharge check 24 CK 0
Q 2-SW-3.2A 3B B SW header to'TBCCW HX's 16 BFLY A0 0
Q NT 20 Sec.
FT SW-3.2B 3B "A" SW header to TBCCW HX's 16 BFLY A0 0
Q MT 20 Sec.
FT 2-SW-8.lA 3B A RBCCW Hx temp. control 24,BFLY A0 0
Q MT 60 Sec.
FT 2-SW-8.lB 3B B RBCCW Hx temp. control 24 BFLY A0 0
Q MT 60 Sec.
FT 2-SW-8.lc 3B C RBCCW Hx temp. control 24 BFLY A0 0
Q MT 60 Sec.
FT 2-SW-11A 3C A discharge header check 24 CK 0
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I April 1981
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B discharge header check 24 CK 0
Q C
Q 2-SW-13A 3C A diesel cooling discharge 8
CK 2-SW-13B 3C B diesel cooling discharge 8
CK C
Q 2-SW-89A 3B A diesel cooling temp. control 8
BFLY A0 C
Q MT 20 Sec.
FT 2-SW-89B 3B B diesel cooling temp. control 8
BFLY A0 C
Q MT 20 Sec'.
FT j
2-SW-102 3B A SW header to chiller X-170 2
. CL A0 0
Q MT 5 Sec.
2-SW-lC4 3B B SW IIeader to chiller X-170 2
GL A0 0
Q MT 5 Sec.
FT l
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Temperature control valve X-84A 1.5 TCV A0 C
Q l
i MT 15 Sec.
FT 2-CHW-34 3B Temperature conttol valve X-84B 1.5 TCV A0 C
Q l
MT 15 Sec.
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SIS header 2B check valve drain 1
GL A0 C
Q stop MT 5 Sec.
FT X
FTCS PI 2-SI-652 IB SDS isolation vilve 12 GA M0 C
Q X
QCS MT 90 Sec.
PI 2-SI-654 2E HPSI header B stop 6
GA MO LO ET 2-SI-656 2E HPSI header A stop 6
CA MO LO ET 2-SI-657 2E SD HX flow control vt:lve 10 BALL AO LC ET 2-SI-659 2B CS/SI pumps minimum flow stop 4
' GL A0 0
Q X
QCS MT 5 Sec.
FT X
FTCS i
2-SI-660 2B CS/SI pumps minimum flow stop 4
GL A0 0
Q X
QCS MT 5 Sec.
FT X
FTCS 9
. April 1981
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Containment Spray 25203-26!26, Sh. 3 2-CS-13A 2E l Suction line from RWST 18 GT 11 LO ET 2-CS-13B 2E Suction line from RWST 18 GT II LO ET 2-CS-13.lA 2B RWST header A stop 18 GA M0 O
Q X
QCS MT 20 Sec.
2-CS-13.1B 2B RWST header B stop 18 GA MO O
Q X
QCS MT 20 Sec.
2-CS-14A 2C RWST header A check Ib CK C
Q X
QP, QR 2 -CS-14B 2C RWST header B check 18 CK C
Q X
QP, QR d
2-CS-15A 2C CTMT sump outlet header A check 24 CK C
Q X
QP 2-CS-15B 2C CTMT subp outlet header B check 24 CK C
Q X
QP 2-CS-16.1A 2B CTMT sump outlet header A 24 GA M0 C
Q MT 33 Sec.
2-CS-16.1B 2B CTMT sump outlet header B 24 GA M0 C
Q MT 33 Sec.
2-CS-065 2E CS stop inside containment 8
2-CS-066 2E CS stop inside containment 8
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GA MO O
Q X
QCS No RCP's in operation l
MT 90 Sec.
2-RB-30.1B 2B RBCCW to RC pump coolers et al 6
GA MO O
Q X
QCS No RCP's in operation l
MT 90 Sec.
2-RB-37.2A 2B RBCCW from RC pump coolers et al 8
GA MO O
Q X
QCS No RCP's in
+
operation MT 90 Sec.
2-RB-37.2B 2B RBCCW from RC pump coolers et al 6
GA MO O
Q X
QCS No RCP's in operation NT 90 Sec.
2-RB-68.lA 3B Eng. safeguards RM cooler outlet 2
GL A0 C
Q MT i
FT 2-RB-68.1B 3B Eng. safeguards RM cooler outlet 2
GL A0 C
Q MT FT 2-RB-210 3B Degasifier return stop 8
BFLY A0 C
Q MT FT a
6 April 1981
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Containment Isolation 2-CS-4.1B 2A Contairunent spray 8
GA MO C
Q l
MT 15 Sec.
LT X
LLRT 2-SI-312 2A Nitrogen supply to SI tanks
.75 GL A0 0
Q MT 5 Sec.
FT LT X
LLRT 2-SI-463 2AE SI tank test line 2
GA H
LLRT 2-E. 709 2AE Shutdown cooling isolation 12 GA H
LLRT 2-MS-191A 2A Steam gen. blowdown sample
.5. GL AO O
Q MT 5 Sec.
FT LT X
LLRT i
2-MS-191B 2A Steam gen. blowdown sample
.5 GL A0 0
Q MT 5 Sec.
FT LT X
LLRT 2-MS-220A 2A Steam gen. bottom blowdown 2
GL A0 0
Q MT 5 Sec.
FT LT X
. April 1981
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m zm Containment Isolation 2-LLR-61.1 2A Quench tank sample
.5 GL A0 C
Q l
MT 5 Sec.
FT X
FTCS PI LT X
LLRT 2-RW-21 2AE Refueling water purification 4
GA H
LLRT 2-RW-63 2AE Refueling water purification 4
GA H
LLRT 2-RW-154 2AE Refueling water purification 4
GA H
LLRT 2-RW-232 2AE Refueling water purification 4
,GA H
LLRT t
l 2-SSP-16.1 a
CTMT sump to aerated drain tk.
3 GL A0 C
Q
^
MT 5 Sec.
FT X
ITCS PI LT X
LLRT t
2-SSP-16.2 2A CTMT sump to aerated drain tk.
3 GL A0 C
Q HT 5 Sec.
ET I
LT X
LLRT s
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Containment Isolation 2-AC-4 2AE CTMT Purge Supply CTMT 48 BFLY AO C
ET PASSIVE LT X
LLRT 2-AC-5 2AE CTMT Purge Supply CTMT 48 BFLY A0 C
ET PASSIVE LT X
LLRT 2-AC-6 2AE CTMT Purge Exhaust CTMT 48 BFLY A0 C
ET PASSIVE LT X
LLRT j
2-AC-7 2AE CTMT Purge Exhaust CTMT 48 BFLY A0 C
ET PASSIVE.
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LT X
LLRT 2-AC-12 2A Containment air sample 1.5 BFLY A0 0
Q MT 5 Sec.
FT 3
LT X
LLRT 4
2-AC-15 2A Containment air sample 1.5 BFLY A0 0
Q MT 5 Sec.
FT LT X
LLRT 2-AC-20 2A Containment air sample 1.5 BFLY A0 0
Q MT 5 Sec.
FT LT X
LLRT 2-AC-46 2E Post incident CTMT sample 1
GL H
ILRT F April 1981
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Containment Isolation 2-AC-47 2A Containment air sample 1.5 BFLY A0 0
Q j
MT 5 Sec.
FT LT X
LLRT 2-AC-51 2AE Post incident CTMT sample 1
GL H
ILRT 2-EB-88 2A
, Containment air sample 1.5 BFLY A0 0
Q MT 5 Sec.
FT X
FTCS PI LT X
LLRT 2-EB-89 2A Containment air sample 1.5 BFLY A0 0
Q MT 5 Sec.
FT X
FTCS PI LT X
LLRT i
2-EB-91 2A Hydrogen purge 6
BFLY A0 C
Q HT 5 Sec.
PI LT X
LLRT 2-EB-92 2A Hydrogen purge 6
BFLY AO C
Q MT 5 Sec.
FT LT X
LLRT 4
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- April 1981
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Containment Isolation 2-EB-99 2A Hydrogen purge 6
BFLY AO C
Q MT 5 Sec.
FT LT X
LLRT 2-EB-100 2A Hydrogen purge 6
BFLY A0 C
Q MT 5 Sec.
PI LT X
LLRT 2-SA-19 2AE Station air 2
GA H
LLRT 2-SI-651 1A SIS Isolation Valve 12 GA MO C
Q X
QCS MT 90 Sec.
LT X
e e
4 April 1981