ML19325E449
| ML19325E449 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 09/11/1979 |
| From: | Groce R Maine Yankee |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| References | |
| IEB-79-15, WMY-79-92, NUDOCS 8911070115 | |
| Download: ML19325E449 (15) | |
Text
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WMY 79-92
^
September 11, 1979 j
1 l
i United States Nuclear Regulatory Commission Office of Inspection and Enforcement
{
Washington, D. C.
20555 Attention: ' Director, Division of Reactor Construction Inspection l
l
References:
(a) License No. DPR-36 (Docket 50-309)
(b) USNRC I&E Letter to NYAPC dated July 11, 1979 I&E Bulletin 79-15 j
Dear Sir 1
I f
Subject:
Response to I&E Bulletin No. 79-15 The information contained in Attachment A is being submitted in response to USNRC I&E Bulletin No. 79-15. The responses are numbered l
corresponding to the bulletin paragraph numbers as listed under i
" Action to be Taken by Licensee and Permit Holders".
{
i Should any further information be required, please feel free to i
contact us.
i Sincerely, MAINE YANKEE ATOMIC POWER COMPANY l
l 1
1 Robrit H. Croce l
Licensing Engineer 1
.DEH/saw l
k i
8911070115 790911 n
i PDR ADOCK 05000309 1
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Attachment A
{
Low Pressure Safety Injection Pumps l
L [
1.
(a)
Pump Name Low Pressure Safety Injection Pump l
(b)
Number l
P-12 (A&B) l l
2.
(a)
Manufacturer Bingham-Willamette Company 28 Northwest Front Avenue f
Portland, Oregon (b)
Model Number (Size and Type) 14 x 16 x 18 B.V.C.R.
(c)
Capacity i
3350 gpm at 360 ft. TDH (d)
Plant Application L
Low Pressure Safety Injection 3.
Pump Dimensions 4
(a)
Height:
35 ft. O in.
- (b)
Diameter 30 in.
J 4.
(a)
Performance Tests Satisfactorily Completed on 9/29/70 and
.. 1,0/9/70
- h. t !, *'
h b.) khhft;h.'S a
,'f(
.kNud
'k I hhd I.'
1 l
'(1)
Neekly:
Lubrication Checks l
(2)
Monthly:
Surveillance Tes. ting i
1 (3)
Yearly Oil Samples Tested j
5.
Operational Problems and Major Repairs i
(a)
P-12A 1
10/20/72 Replaced Mechanical Seal j
3/21/73 MR,461-73 Replaced Mechanical Seal 1
5/4/73 MR 683-73 Lower motor oil level low.
Added
)
1 oil,to proper level.
I l
1
7 n
.t.
h,...
t U.
8/29/73 MR 1349-73 Tightened flango bolts in seal
[
- p ("
water piping to pump.
11/12/73 MR 1865-73 Replaced RTD at lower bearing.
i.
7/26/76 MR 0457-76.Ref:
Rebuild mechanical seal.
Installed i
new "O" rings carbide face, and carbon face.
l Assembled seal.
Rebuilt seal will be stored in RCA i
Shop tool crib.
t 4/5/77 Motor Thrust & Journal Bearings (SFX-22326)
[
temperatures may be 250 F for sustained operation.
At 265 P and above oil break down may occur.
[
Bearing max. operating temp. for rollers is 290 F j
Per Bob Linguist, Atlantic Bearings and Drives.
j 4/30/77 MR 697-77 Rezeroed amp meter in MCB per procedure l
3.5.4.
j r
5.
P-12B 4/19/72 Investigated report of smoke from motor.
Meggered and found zero ground.
Removed and sent motor to f
Westinghouse at Augusta for rewinding; motor returned and installed.
Performed all high voltage testing l
and placed back into service.
j
(
8/29/73 MR 1349-73 Tightened flange bolts on sehl water l
piping to pump.
11/6/78 MR1767-73 Replaced mechanical seal.
Durametallic rep. (P.L. Keefer) assisted).
Found carbon seal pitted.
Caused by boren when pump is not running.
i Ecplaced complete sca*.ith a rebuilt seal.
Fump dropped.380" when unco'upled, and was raised.350" 6
.%' *bth';"h.Whh$, '2'/20/76 MR 1761-76$ ?.''Q,' h i+.%!> pled when cou Wi '-)*\\. 5. $..f. Yi ??.l'3?.llt.E.!.' b. l+NV.hf'h
'Y T
cl Upper bearing oil' level' low.
Level wa.s 1/0" lower than nons.al.
Se oil was added.
Tightened l
fitting around sight glass.
4/5/77 Motor thrust and journal bearings (SFK022326) temp-e eratures may be 250 F for sustained operation.
At 265 F and above oil breakdown may occur.
Bearing i
I max. operating temp. for rollers is 290 F.
Per Bob Linquist, Atlantic Bearings and Drives (4/5/77) (RFP).
5/12/77 MR 519-77 Installed threaded pipe cap on casing drain valve.
1/23/79 MR 094-79 Ammete:: in switchgear room reads 45 amps with pump shut docin.
F.eplaced inoperative anmeter
(
with new one from stock.
Calibrated new meter in ac'cordance with prc:edure MYM-3.5.4 and attached calibrction sheet.
R e
7..
.s.
e, ee +.
(.,
6.
(a)
Lor'sgest Interval Available for operation
.,,,p Y(
ey. :
(1)
P-12A:
2 yrs. 6 mos. (11/12/73 thru 7/26/76)
- g(j
- {
s.
(2)
P-125:
3 yrs. 1 mon.
(11/6/73 thru 12/20/76) 4.' >
(b)
Number of cycles during this interval, duration and mode M7'# '
%j (1)
P-12A 26 cycles, 15 min. recirculation, 14 cycles,.
- i.-
4;
..;f 7 dhys, rated flow f
I e...,,s.
(2)
P-125 26 cycles, 15 min, recirculation, 14 cyclest.a'
-*"~... $
7 days, rated flow
- p. " s.. ' "i.?#
'-' 'l p.,
l (c)
Longest Continuous Run and Status at End of Run'
- M.
' f'... i ;
..i, l (1)
P-12A 7 days, operable (2)
P-12B 7 days, operable
, [ A[f)
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7 service Water Pumps
(, ~ 1..
(a)
Pump Hame l'
service Water Pump l
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}
(b). Number P-29 (A,,B, C, & D) l-2.
(a)
Manufsetu,rer I
i j
P-29 A, D P-29 B, C l
Worthington Corporation Bingham-Willamette Company 4751 Broadway 28 Northwest Front Avenue j
Denver, Colorado 80216 Portland, Oregon j
i I
(b)
Model Number
~
P-29 A, D P-29 B, C 1
27 HH1200W-1 16X32CT VM Capacity l
(c)
P-29 A, D P-29 B, C l
t 10,000 gpm at 66 ft. TDH 10,000 g;rn at 66 ft. 'IDH (d)
Plant Application
)
Pump Dimensions l
1
- ,.P-29 P-29,B, C
.t.*.A,.D 's.'. ~ p.',. ;..
(a)
Height:
21 ft. 5-1/4 in.
29 ft. 7-5/8 in.
l (b)
Diameter:
34 in.
32 in.
4.
(a)
Performance Tests Satisfactorily Completed On:
p 6/21/72 (P-29 A, D) i 6/28/74 (P-29 B, C) l (b)
Routine Maintenance I
(1)
Weekly:
Lubrication Checks
(
(2)
. Monthly ' Surveillance Testing l
(3). Yearly:
,6 1 Samples f
(4)
Refueling Outage:
Inspect motor windings, meggar motor, inspect impeller
.',,,,i.
s
'. 5.
. Operational Problems and Major Repairis r
(a)
P-29A C
2/26/73 to 3/2/73 worked in service water pump.
Service rep., Art Rowe, installed stainless steel impeller.
Repacked gland with Crane C-60 packing.
Inapected pump b' earing,,
3 found to be satisfactory.
Vibration readings were taken with IRD Model 306.
Motor at one point 1.2 mills.
Pump.7 mills.
l Msgger reading at 1000 volts 700 meg.
(R. Guillette).
i I
i 4/15/74 MR 356-74 Installed shields over expansion joints j
per W/O 73-135, 8/6/75 MR 1625-75 Removed ventilation screens, cleaned and replaced.
8/8/75 MR 1660-75 Freed up and adjusted gland leaving i
purp with slight leak off, j
l 10/9/75 HR 0314-76 Removed section of casing drain, ran i
l water through all sections and found them to be clear.
r 3/8/76 MR 0367-76 Adjusted packing gland to allow normal leakage.
.l 4/2/76 MR 0539-76 Checked packing gland and adjusted same.
?
2/10/77 MR 170-77 Cleaned cooling air filter screens.
l 6/4/77 MR 865-77 Excessive packing gland leakage.
Removed l
packing.
Repacked without lantern ring (ruihed packing ring i
trying to remove).
Installed 7 rings of 5810 packing.
i 6/9/77 MR 779-77 Removed motor and. delivered to Westinghouse in Augusta for cleaning and necessary repairs including ber'F ns i
Reinstalled motor and test run.
r
!?',.*.. g replacement..
v..
.g...
'z
..'...t'-
s
.: a..s..; h 8$:7 48' 'R[ mon d,Sebdilt^and r'eiss'N Yled P'-29A'I'...
..:n
~-
gf
.rf...!
0.74fe,L8/18'/7 b..
3 *l
'i as'per maintenence procedures.
~ '
ThepresentWorthingtonPumpisschedukedtobe NOTE:
l replaced in the near future, possibly during the refueling outage in January 1980.
l (b)
P-29B f
2/26/73 to 3/2/73 Worked on Service Water Pump.
Service Rep., Art Rowe, installed ceramic impeller from "A" pump.
l l
Condition was fair, coating was still good.
Repacked gland with Crane C-60 packing.
.tnspected pump bearings, found l
L to be satisfactory.
Vibration readings were taken with IRD g
L Model 306, and taken 90 from each other.
Top of motor.5 mills, bottom'of motot
.2 mills, head of pump.2 mills.
L t Megger reading at 1000 v.
1000 megs.
(R.
E. Guillette).
4/15/74' MR 35'4-74 Installed shields'dver' expansion joints
~
pc. M/O 7 3-135 (MR is in ?-231s filo).
6 3 :'.'..
s V
g
~
I S/17/74 MR 1225 and 1252-74 Megger 61-023 1000 Volts.
400 megs. (R. E. Guillette).
i
(~
9/1/74 MR 1225-74 Comp 1ted, replaced Worthington pump.
Installed Bingham-Willamette pump.
\\
,10/1/74 MR 1532-74 Took up on head closure strap t6
~
stop leakage.
(B. Clark BIW).
i-10/31/74 MR 1681-74 Added two (2) rings of JC C-60 3/8" 1
packing.
(C. Pinkham BIW).
i 5/21/75 MR 1032-75 Tightened fitting, leak stopped.
)
7/4/75 MR 1399-75 Nipple was erroded (renewed).
,j 8/3/75 MR 1625-75 Removed screens to pumps, cleaned i
them with solvent, wiped out sister parts and replaced screens.
10/17/75 MR 1587-75 Corrected as per MR 451-75 which is f
in, service water system valve file.
10/21/75 MR 2004-75 Cut into casing and welded a nipple, and piped into drain.
Check valves were installed.
6/9/76 MR 0839-76 Problem
(
Disassemble pump to locate outlet check valve clapper stud and nut and check pomp internals for damage.
i corrective Action (Bingham Rep., W. McCaulley, on site)
Disassembled pump and found the stud lodged on the impeller bell.
Damage to the impeller was minor with tears on two of the blades and small dings en,the others.. The impeller
.i was shipped to DIN for refurbishing and rebalarce.
. ' Wi'a..: ;
'" '$. u ?p*.hg. G,y.*1 6.i.'. U Slight. scratches'and ding;s'wer...>e'noted;on the*:
y.' ' ~.T. u
' O r. '. i. a.:.:
3....
M.
y;
'S T' vanes ab'ove the impeller.
An evaluation determined these would not require repair.
Unrelated to this event, three small' shrink cracks were noted near the impeller bell housing gussets.
An evaluation of these was also determined to be not serious because they are not pressure retaining parts.
Bearing and wear ring clearances were noted as excessive.
No spare parts were on site for replacement (on order)
(
therefore, the pump was re-assembled with the concurrance of Bingham representative.
Mr. McCaulley advised bearing clearances of.010" to.020" on dry cutless rubber bearing was normal.
He advised replacing bearing' sleeves.tnd bearings during a duture
(
overhaul, within 2 yrs. if' practical.
He recommended l
impeller sad casing wear ring 'alse be replaced at that time.
of insysetton,f impeller will depend on condition at time Rep 1;cpment o I m,_
_,t
g l
1
.y.
o -
j The following bearings clearances were noted:
1st Bottom Bearing Bearing Shaft Sleeve c
2.789 The shaft sleeve was worn excessively.
It was metal spray welded with "Lubritec j
l 19985 and to provide.020 2.780 bearing clearances.
j 2nd Bearing from Bottom l
Bearing Shaft sleeve j
2.779 2.747 1
2.7885 2.7485 3rd Beaging from Bottom f
These clearances were not recorded because the bearing i
was " stuck" and would have required machining to remove i
As spares were not availabic, this machining was same.
not done.
4th Bearing from Bottom Bearing Shaft Sleeve i
2.7875 2.7465 i-Y
1: ?
5 2
5th. Bearing from Bottom J
Bearing Shaft Sleeve l
2.780 2.750 2.790 2.749 Part of the nut.from the outlet check valve was found by a diver under the pump inlet in the circ., water pump bay after having dropped through the pump.
When the nut went by the stationary wear rings, it caused the stationary wear rings to rotate approximately one inch causing the ring to roll'over its'three set scrcws.
9*e 4
pp y
c.
_g_
This then caused aIbulge in the area of the set screws.'
L The old set screws were drilled out to relieve this problem I '(
'and three holes were drilled and taped for new set screws.
Upon completion, the following stationary wear rings were t
recorded.-
i; io 9
I p.r,1 e g
Set Screw 4
- qp 3 (Typ) o o*I V
r t
Y l
i g
The instruction book specifies.050" to.060" impeller f
g; (pump lif t) clearance at cold set conditions.
In order r
to achieve maximum pump performance with present wear,
~
Mr. McCav11ey recommended a.028" lift.
This was i
confirmed with Bingham Engineering & Service Dept. by PEOAG (R. LaRhette).
Final coupling alignment readings were as follows:
l
.000"
.000
-001" FACE
-001"
.001 OD
.001
.000
.000 i
The pump was test run after assembly with satisfactory results.
The following vibration readings were noted, i
Horizen:11 in East to West directi:n.001", vertical was Icss than.005".
d
[M w% hyV','Q.ur'ifor.'. additional 5referencer and 'for/ spe hj;f'.M.The. cognizant'iPEQAG. inspect'ionreport'is. contained
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. g.r 1/28/77 Mit 119-77 Laaks in brackish water piping.
Repla'ced nipples that were leaking.
Took up on packings.
2/10/77 MR 170-77 Cleaned cooling air filter screens.
l (MR is in P-29A folder).
i 6/9/77 MR 779-77 Removed motor and delivered to Westinghouse in Augusta for cleaning and necessary repairs including bearing replacement.
Reinstalled motor and test run.
10/20/77 MR 1532-77 PROBLEM:
Unen P-29 B & C were on together there normally would be 5 t3~7 amps' difference.
On 9-25 "C" amps decreased approximate 3y 7 amps to equal "B"
pump.
- Also,
(
service on pressure oscilla' tion was approx. 1 psi.
Chechef. tith Operati:ns, all pd ps appear to be operating satisfs:.orily.
Thesa fluctuati:ns could have been caussi bymu}sb1 cont'rolopciationsthat :sre'being performedT
6
-,.. ~ _.....
i N ~. v.
~9~
NOTE:
The original P-29B pump was a Worthington, Pump f
and was replaced with a Bingham pump.
(c)
P-29C 2/26/72 to 3/2/73 Worked on service water pump.
Service Rep., Art Rowe, dewatered pump pit.
Inspected pump ceramic impeller.
Condition was fair.
Coating was still good.
I j
\\
4/15/74 MR 356-74 Installed shields over expansion I
joints per W/0 73-135 (MR is in P-29A file).
9/1/74 MR 1225-74 Comp 1ted, replaced.Worthington Pump.
Installed Bingham-Willamette Pump.
MR is in j
P-29B history file.
9/1/74 MR 1252-74 Complted, tow plate located, drilled, pined and secured.
MR is in P-29B history file.
1/13/75-MR 73+75 Meggered motor with a satisfactory
)
reading.
8/3/75 MR 1625-75 Removed screens to pumps, cleaned them with solvent, wiped out sister parts and replaced screens.
10/17/75 MR 1587-75 Corrected as per MR 451-75, which i
is in Service Water Systems valve.
j 10/21/75 MR 2004-75 Cut into casing and welded a nipple, and piped into drain.
Check valves were installed.
1/28/77 MR 119-77 Leaks in brackish water piping.
Also leaks infair piston.
Replaced nipples that were leaking.
,g.
h[ihjy.N.I9Ti>6k up on:. packings. 'i. Had '.I&C
- repair'.', air. le
'i
/
r i
4p.w.
2/10/77 MR 170-77 Cleaned cooling air filter screens (MR is in P-29A file).
J 6/9/77 MR 779-77 Removed motor and delivered to Westinghouse in Augusta for cleaning and necessary repairs including
]
bearing replacement.
Reinstalled motor and test ran.
j 10/20/77 MR 1532-77 PROBLEM:
P-29 B & C were on together there would normally be 5 to 7 amps difference.
On 9/25 "C" amps decreased approx. 7 amps to equal "B" pump.
- Also, service water header pressure was oscillating approximately 3 lbs. until A & D were put on.
With A & D on pressure oscillation was approx. 1 psi.
Check with Operations, all
' pumps appear to be operating properly.
These fluctuations could have been caused by mussel control operations that were being performed (MR is in P-29B folderl.
9*G g
,.~n.-
=4
-10 MR 129-78.SalCnDid valva 1cCk;d by.
Removed 1/30/78 solenoid valve and cleaned internals.
Removed air operated valve, inspected seats and reassembled.
Removed i
(.
piping and inspected inside for obstructions.
Reassembled valve and tested satisfactorily, i
NOTE:
The original P-29C pump was a Worthington pump l
and was replaced with a Bingham pump.
(d)
P-29D
)
l 2/26/73 to 3/2/73 Worked on Service Water Pump.
Service
]
Rep., Art Rowe, installed stainless steel impeller.
j Repacked gland with Crane C-60 packing.
Inspected pump i
bearings, found to be satisfactory.
Vibration readings were l
taken with IRD Model 306, and taken 90 from each other.
Top of motor 1.5 and 2.5 mills, bottom of motor.7 and.8 l
mills, top of pump.2 milles. Megger, reading at 1000 V.
2500 megs.
(R. E. Guillette).
12/17/73 MR 2041-73 Tightened packing and cleaned drain.
A. Leeming.
4/15/74 MR 356-74 Installed shields over expansion joints per W/O 73-135.
(MR is in P-29A file),
i 4/27/75 MR 805-75 Repacked pump using JC C-60 packing 1/2" sq.
Had much difficulty in removing laritern ring because it
(-
was of carbon steel material and was corroded.
With PEQAG l
(J. Hebert) concurrence, removed lantern ring permanently.
l The packing does not have seal vater to the lantern ring.
8/3/75 MR 1625-75 Removed screens to pumps, cleaned them with solvent, wiped out sister parts and replaced screens.
3/17/76 MR 0432-76 Adjusted packing gland.
-7 C'le'ariek olid aiU [11't'Ah. chIhn fpf,.
I kh.
k
/
e,$,;fy'8rP,% M yh QR i,,in,'P-29A'fil )'.;- a 2,*j,}i WlJ '.*f."! fo,9.M:y...q 's.pf,~ ty,,,, I y j
6/9/77 MR 779-77 Removed :.a.otcr and delivered to Westinghouse in Augusta for : leaning and necessary repairs including bearing replacement.
Reinstalled motor and test ran.
11/23/77 MR 1747 gland leaks.
Adjusted packing.
2/17 to 2/22/78 MR 213-78. P-29D Service Water Pump Shaft t
Broken.
The following was noted during pump disassembly.
1.
The lower in.peller drive shaft was broken at the chaft coupling.
The break was at the root of the last thread on the shaft.
Indications were that the crack had started at some time previous and had continued approximately 1/3 l
of the way through shaft prior to breaking, 2.
Corrosion.by apparent galvanic action.was ver. prev.ilent w,-
on the suction bell and support webs.
Some was evident to a lesser degree on the casing sections.
- l
- t.
q,
()
3.
Some fine cracks were. noted at the suction flange webs.
4.
Cusing wear ring were severely corroded.
{
5.
liepeller and pump casing showed no sign of erosion.
6.
Cutless rubber bearings were in satisfactory condition.
corrective Action 1.
Replaced broken drive shaft using shaft from previously removed pump with cast iron impeller.
]
I NOTE:
One quarter inch (14/") had to be removed
. from the unthreaded end of the drive shaft to achieve.185" impeller lift plus 1/32" drive shaf t to motor shaf t clearance.
I 2.
Rep) aced suction bell and 2 casing sections using same from old pump.
3.
Replaced casing wear ring.
The impeller wear ring had to be machined slightly to allow.010" clearance
(.020" overall).
- 4.
The punp was repacked.
5.
Vibration readings subsequent to assembly were less
(
than 1.2 n.ils anywhere.
6.
Megger readings on motor were 000,.
7.
Pump alignment 5
.~
1 E+.0005
+001 W l
+.004 N
7/2/79 MR 892-79 Packing leaking.
Adjusted packing, leak stopped.
NOTE:
The present Worthington pump is scheduled to be replaced in the near future, possibly during the refueling outage in January 1980.
1:
- ,r i',
. 6.
a) longest Interval Available for Operation 1.
P-29A 1 yr. 4 nonths (4/15g4 to 8/6AS) 2.'
P-29B 1 yr.10 nonths (10/20M7 to present) 3.
P-29C
,1 yr. 7 mmths (1/30M8 to present) 4.
P-29D 1 yr. 4 nonths (2/17A8 to 7/2A9) '
b) Hanbar of cycles of Operation during this interval (6a),
daration of each cycle, and the operating node.
1.
P-29At 34 cycles, 7 days, rated flow 2.
P-29B:
48 cycles, 7 days, rated flow 3.
P-290:
41 cycles, 7 days, rated flow 4.
P-29D: 34 cycles, 7 days, rated flow c) Imgest continuous run and sta'.us at and of run 1.
P-29At 7 days, operable '
2.
P-29B: 7 days, operable 3.
P-29C:
7 days, crerable 4.
P-29D 7 days, operable i
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..c, Ccatainment Spray Pumps
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'1.
a)
P m p Nune:
0:mtainnant spray Pmp b)
Nunber
.' P-61 (A, B & 8) l 2.
a)
Manufacturers
[
Byron Jackson Pupp Division I
Terminal Annex Ice Angeles,, California 90054 b)
)bdel Nebers j'
(Size and Type) 18CKXH V>tf c)
Capacity:
3700 gpn' at 305 ft. '!0H r
d)
Plant Applications Ocotainment Spray I
3.
Pupp Dinansions:
a)
Height:
36 ft. 5-5/8 in.
l b)
Dianeter: 28 in.
4.
. :- )
,7:.rfer::n=e T2sts Satisfactorily C:rpleted on 4/5/71 i
~
fy
- v i
- 2) !bathly:.5urenillanco 'Isating i
- 3) Biannuallys oil Sanples tested t
.5.
Operational Problems and Major Repairs a)
P-61A 3/19/73 MR 493-73 Tighted unions, leak stopped.
3/4/74 MR 219-74 Repaired line leaks. MR is in P-61S folder.
9/27/77 MR 1513-77 Sna11 leak in leak-off gland area. Beplaced leaking
. ('
pips union ascerbly with lb. safety class stainless tubing assembly l
usin,g cring fittings.
System pressure tested by Ops. System leak tight, i
lt e P
I' l
,,.g, q,
b)
P-612,
~
2/26/74 MR 219-74 Perfonned per instructions on MR. Work Was &me on P-61A, B and S.
Imak checka$ punp with satisfactory results.
i (
3/15/73 MR 462-73 Installed new internals in ball valves.
12/27/73 MR 2147-73 Tightened up pipeplugs, leak s'M.
\\
I O4/77 MR 454-77 Renoved and replaced mechanical seal cooling coil vent valve with new one.
Replaced with 1/2" Whitney valve. ss 12NBSB.
i e
4/30/77 MR 6,97-77 Replaced 'anp meter in )CB per yuMure 3.5.4.
l 9/27/77. MR 1513-77 Sunil leak in gland area.
Replaced leaking pipe union assenbly with 1500 lb. rated safety class 1 stainless steel t
tubing assenbly using crinp fittings. System pressure tested by Ops.
System leak tight (MR is in P-61A folder).
c)
P-61S 3/4/74 MR 219-74 Repaired lenk-off line laaks. MR is in P-61S folder.
1/3/75 MR 1979-74 Replaced caring vent line with 1/2" stainless tubing.
6..
a):
Iongest interval available for operation 1)
P-61A 3 yrs. 6 nonths (3/4/74 to 9/27/77)
(
2)
P-618 3 yrs.1 nonth (2/26/74 to 4/4/77) 3)
P-61S 4 yrs. 8 renths (1/3/75 to present) g b)
Nrber of cycles of operating during this interval, duration of each cycle and operating rode.
1)
P-61A 42 cychs,15 rran., racirculatwn h.b.h'!!!
' ' k):tNPh,6h'M.Qyclabi,>#
.1$ min.[*'reci d tion
- N *f'OfN$hO + f, d.I'. ff'f k h. l,y h7'c d
hD.
y,th.kew...
' y.s T ' + s$
uA 56 cycles, l5 515., ",recliEd,:. n,
.?.,fp - (%.n
,p.1:
a51c$,,'.N _E.
M
...h 9.bEli
- @E. )
. k.Nfy$65S
.c) longest continuous run and status at end of rcn
- 1) P-61A, 2 hr., operable
- 2) P-61B, 2 hr., operable l
- 3) P-61S, 2 hr., operable l
l l
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