ML17297B649
| ML17297B649 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 08/19/1982 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Novak T Office of Nuclear Reactor Regulation |
| References | |
| ANPP-21657-WFQ, NUDOCS 8208230053 | |
| Download: ML17297B649 (18) | |
Text
REGULATOR'I
.NFORMATION DISTRIBUTION -S,EM (RIDS)
ACCESSION NBR:8208230053 DOC ~ DATE: 82/08/19 NOTARIZED:
YES FACIL:STN"50 528 Palo Verde Nuclear S.tation~
Uni,t 1i Arizona Publi STN 50-529 Palo Verde Nuclear Stationi Unit 2i Arizona Publi STN 50 530 Palo Verde Nuclear Station~
Unit 3< Arizona 'Publi
'AUTH BYNAME AUTHOR AFFILIATION VAN BRUNT~E,E.
Arizona Public Service Co, RECIP ~ NAME RECIPIENT AFFILIATION NOVAK,TAHE Division of Licensing SIZE:
NOTES:Standardized plant.
Standardized plant ~
'Standardized plant>
SUBJECT:
Forwards responses to open items re 820803-06 pump 8 valve operability review team (PVORT) audits DISTRIBUTION CODE:
B001S COPIES RECEIVED:LTR, ENCL.,$
TITLE: PSAR/FSAR AMDTS and Related Correspondence DOCKET 05000528 05000529 05000530 05000528 05000529 05000530 RECIPIENT ID CODE/NAME A/D LICENSNG LIC BR P3 LA INTERNAL: ELD/HDS3 IE/DEP EPOS 35 NRR/DE/CEB 11 NRR/DE/GB 28 NRR/DE/MEB 18 NRR/DE/QAB 21 NRR/DE/SEB 25 NRR/DHFS/LQB 32 NRR/DHFS/PTRB20 NRR/DSI/ASB 27 NRR/DS I/CSB 09 NRR/DSI/ICSB 16 NRR/DSI/RAB 22 NRR/DST/LGB 33 RGN5 EXTERNAL~
ACRS 41 DMB/DSS (AMDTS)
LPDR 03 NSIC 05 COPIES LTTR ENCL 0
0 1
0 1
1 1
1 2
2 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
2
'2 10 10 1
1 1
1 1
1 RECIPIENT ID CODE/NAME LIC BR 03 BC LICITRAe E ~
01 IE FILE IE/DEP/EPLB 36 NRR/DE/EQB 13 NRR/DE/HGEB 30 NRR/DE/MTEB 17 NRR/DE/SAB 24 NRR/DHFS/HFEB40 NRR/DHFS/OLB 3Q NRR/DS I/AEB 26 NRR/DSI/CPB 10 NRR/DSI/ETSB 12 NRR/DSI/PSB 19 N
B 23 0Q RM/DDAMI/MI8 BNL (AMDTS ONlY)
FEMAPREP DIV 39 NRC PDR 02 NTIS COPIES LTTR ENCL 1
0 1'
1 1-3 3
'3 3
2 2
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
0 1
1 1
1 1
1 1
1
.TOTAL NUMBER OF COPIES REQUIRED:
LTTR 58 ENCL
.53
c 1
Wt 1
n W
~
rr wtr k
Wr
n ARIZONANUCLEA~POWER PROJECT Post Office Box 2166 oenix, Arizona 85036 August 19, 1982 ANPP 21657-WFq/TFq Mr. T. H. Novak Assistant Director for Licensing Division of Licensing Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS) Units 1, 2 and 3
Docket Nos.
STN-50-528/529/530 File:
81-056-026, G.1.10
Dear Mr. Novak:
Enclosed are responses to the open items of the Pump and Valve Operability Review Team (PVORT) Audit conducted at the PVNGS site, August 3 through 6, 1982.
Please contact me if you have any questions on this matter.
Very truly yours, C~
E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects ANPP Project Director EEVB/TFQ/dh cc:
F. Maraglia E. Licitra (w/a)
R. Wright (NRC) (w/a)
C. Miller (EG&G) (w/a) 8208230053 8208 i9 PDR ADQCK 05000528 A
('
C
STATE OF ARIZONA
)
) ss.
COUNTY OF MARICOPA)
I, Edwin E. Van Brunt, Jr., represent that I am Vice President Nuclear Projects of Arizona Public Service Company, that the foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority so to do, that I have read such document and know its contents, and that to the best of my knowledge and belief, the statements made therein are true.
Edwin E. Van Brunt, Jr.
Sworn to before me this day o
~4
,p 1982.
-Ny Commission expires:
My Commlsslon Expires May 49, 4986 Notary Public
r r'pl 9 f "(g)8 V5't<qx3 A'~>liAl'"it(4"
1.
Resoluti.on to PVORT Finding of ~Findin s and Status Perm Page 1
CVCS Char in Pum 1-P-CHB-POl A detailed review of the manufacturer's and vendor's recommended installation configuration for the plexiglas pump cover-plate has revealed the following information:
1)
As indicated in the PVORT, this cover-plate is to be both sealed (gasketed) and vented to provide an outlet for water or hydrazine vapor which may accumulate in this housing.
2)
The sealed and vented requirement for the cover, however, is needed to preclude area hydrazine buildup and is essentially at issue only from a room habitability standpoint.
It should not effect pump operability, except in its role as a dust cover for the pump pistons.
Good industry practice would indicate that the moving parts (i.e. the pistons) should be kept clean and free of abrasive particles which could cause premature wear.
An inspection of the pumps of all three units has shown that the pumps in Units 2 6 3 are configured in accordance with the vendors sealing requirements, as in Unit 1 pump 1-P CHA-P01.
Please refer to the attached sketch and pictures.
Unit 1 pumps 1-P-CHB-POl 6 1-P-CHE-P01 do not conform to this requirement for sealing in that the vent line is smaller than the hole in the cover-plate.
Corrective action will be taken to assure that the sealing on these two pumps will be identical or equivalent to the others and provide an equivalent level of personnel safety.
2.
Resolution to PVORT Pindings of ~Findin s and Status Form Pages 5 and 11.
1)
CVCS (CVIC) 1" Pneumatic Globe Valve/NSSS-CH-505 2)
H dro en Pur e Valve/BOP-HPA-UV-003; A review has been made of the design and functioning of these
- valves, the PVNGS policy regarding their operation, and their indication in the control room on the Safety Equipment Status Status System (SESS)
Panel.
Desi n
& Functionin Item 1.,
CH-505, has a manual mechanical operating mechanism which, if engaged, prevents the valve from functioning pneumatically.
, This mechanism does not have provision for contacts to provide an automatic remote indication or override of the operation of this mechanism.
I
,f
.l
Page 2.
Item 2., UV-003, has a manual mechanical operating mechanism which will not prevent the valve from being automatically functioned, unless a padlock, pin, wire or some other sort of restraining device is used to secure the handle in the mechanical position.
Although such devices are not presently planned for use at the site, their used on a case-by-case or even unauthorized basis cannot be ruled out.
Also, there is no provision for automatic remote indication of the opera-tion of this mechanism.
It Therefore, it can be post'ulated correctly that both of these valves could be put in a position which,would disable auto-matic operation "upon demand..
0 eratin Polic There are two operating conditions under which these valves could'e put into the manual mechanical mode:
1.
During maintenance of the valve or the system in which it is connected.
2.
During operations when the valve is found to be not automatically operable.
In the first case, the maintenance procedures, which are in preparation at this time, will specify that the final step of any maintenance on the remotely operable value will be to stroke it remotely to verify proper operations.
In the second
- case, the discovery of the non-operable valve will cause an "action statement" to be generated which will require a work order to be performed to correct the problem causing the non-operability.
This work order will then be performed to the procedures discussed in the first case, which will result in the same disposition.
In addition, for both these
- cases, there will be an SESS Panel indication of the inoperable status of the specific valve.
This has been verified specifically for CH-505 and UV.-003, as well as for their counterparts in the other safety train.
In the first case, this indication will be manually done in accordance with maintenance and operating procedures.
In the second
- case, the initial failure to operate will cause automatic SESS initiation.
Both ini-tiations must be cleared following proper operating procedures.
In addition to these policies and safeguards, there are two other operations procedures, in preparation, which will provide additional assurance that these valves will be available when needed:
Page 3.
1.
Operations will perform a routine valve line-up verification.
2.
After fuel load or any time the containment is opened, a containment integrity (isolation) check is'performed prior to initiating start-up.
I I
All of these policies are in accordance with the PVNGS Tech.
Specs.,
SESS Indication The Safety Equipment Status System (SESS) supplies signals to a panel in the control room which automatically indi-cates inoperability of any active class i.e. equipment on the following systems (passive equipment such as manual valves are not included):
1.
Containment Isolation 2.
Main Steam Isolation 3.
HPSI 4.
Recirculation 5.
Aux.
Aux.
7.
LPSI 8.
Passive Safety Injection 9.
Iodine Removal 11.
Containment Purge Isolation 12.
Control Room Filtration Isolation 13.
Control Building Essential ACU 14.
Fuel Building Essential Ventilation 15.
Essential Chilled Water 16.
Essential Cooling Water 17.
Essential Spray Pond 18.
Diesel Generator 19.
IE Load Center Breaker 20.
Non-ESF Load Shed Both of these valves are so automatically indicated upon their failure to operate when required or upon failure of their power supplies, as indicated previously.
In addition, both may and will be manually indicated as inoperable in any of the situations previously discussed, which encompass all such postulated occurrances.
4 I
Page 4.
In addition to these valves, all non-manual valves will be handled in the manner described, as appropriate.
For instance, all critical valves are individually indicated on the SESS; others being included in ~s stem inoperable indication.
Non-containment isolation valves will obviously not be subject to containment integrity checks.
3.
Resolution to PVORT Findings of ~pindin s and Status Form Page 8
A visual inspection was made of the MSIV hydraulic actuator in question (BOP-J-SGE-UV-180), in order to identify the correct serial and model numbers.
The correct numbers are as follows:
1)
Model Number F-5155 2)
Serial Number E-9023-1-2, which is identical to the valve serial number.
These new numbers have been transferred onto the PVORT and SQRT Master Forms.
E
ETCH'maqi~ mO covFQ, V~T hhoQlcQ~
EPWS,Q, F84,~9,5
~O NiOPLE
- -RuaBKR-vlASHg~
PLFX<qLp,~
~ KW-PlA, STA'R UKkWASgag HKx NgT lNSWAi<A'OOru 'DETAil OF TH@
yp~ VeR, 7HZ FO~V4lNQ pub% S:
Qy A i-P-@HA-POX get'T $
>-P-CHA-FQ1.
f N
~
~
a.s bu'i'/inskolleh l-P-CHS-PQl f
\\
P.
-, ~~~;'rp'l
++~8 '~
'~e
+i.r+v~
~$
UNSE.ALEP %FAT lt4$TALLA%'[054
~
~