ML20246M640
| ML20246M640 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 03/17/1988 |
| From: | NORTHEAST UTILITIES |
| To: | |
| Shared Package | |
| ML20246M626 | List: |
| References | |
| IC-CALC-88-001, IC-CALC-88-1, NUDOCS 8905190204 | |
| Download: ML20246M640 (20) | |
Text
_ _ _ _ _ - - - _ _ _ - _ .
4 4
Calculadon No. Revision No.
. IC-CALC-88-001 0 Connecticut Yankee Instrument & Controls Calculation-Subject : Dynamic Response of Low Pressurizer Pressure Scram Calculators PDCR/Proce' dure: (1) PDCR 861,"RC & PS Upgrade" (2) SUR 5.2-95.1," Calibration of VLPSC Channel PM-411" (3) SUR 5.2-95.2," Calibration of VLPSC Channel PM-412" (4) SUR 5.2-95.3," Calibration of VLPSC Channel PM-413" (5) SUR 5.2-95.4," Calibration of VLPSC Channel PM-414" (6) SUR 5.2-4.1," Rack AF Periodic Surveillance" (7) SUR 5.2-4.2," Rack BF Periodic Surveillance" (8) SUR 5.2-4.3," Rack CF Periodic Surveillance" (9) SUR 5.2-4.4," Rack DF Periodic Surveillance" (10) CMP 8.2-34,"MicroCard PM-411 (AF-N2-S7) Replacement Verification (11) CMP 8.2-46,"MicroCard PM-412 (BF-N3-S2) Replacement Verification (12) CMP 8.2-52,"MicroCard PM-413 (CF-N3-S2) Replacement Verification (13) CMP 8.2-58,"MicroCard PM-414 (DF-N2-S2) Replacement Verification Q.A. Category 1 Yes No Pre ared By Title Date YM M hjuSCD T6c EMq 0 2. 16 - B B Verified Title Date
/41.h." AMcO bao<. 4Mm. g[/ oh8 Approve 3 By Title Date v
v~ $Dd f Sv W (/7//
8905190204OM213 PDR ADOCK O pg P
L____________--- _
a
Connecticut Yankee I&C Calculation
Subject:
Dynamic Response of Low CALC No. IC-CALC 88-001 Rev. No. 0
- tssurizer Pressure Scram Calculators Prep. By John Kowalchuk Date 2/4/88 Chkd By N//lWW Date r/1o/88 1.0 - OBJECTIVE 1.1 To determine the theoretical transient time response of the VLPS dynamics for a step and a mmp input .
2.0 REFERENCES
2.1 Westinghouse letter NPS-5659 (CYW-4107) S.O. CYW-320, dated 12/13/67, " Connecticut Yankee - Setpoints for Variable Low Pressure Reactor Trip Calculations".
3.0 SCHEMATICS / TABLES 3.1 Ncne 4.0 CALCULATIONINPUTS AND ASSUMPTIONS 4.1 " Transformation Calculus and Electrical Transients", by Stanford Goldman, Ph.D.,
p 416-423, Appendix D (Table of Laplace Transforms).
l l
l l 2 of 8
_ _ _ _ _ _ - _ _ _ _ _ ~ _ - _
. Connecticut Yankee I&C Calculation
Subject:
Dynamic Response of Low CALC No. IC-CALC-88-001 Rev. No. O r essurizer Pressure Scram Calculators' Prep. By John Kowalchuk Date 2/4/88 l Chkd By1 / f N((85%Date r{tofM 5.0 CALCULATIONS
~
A Loop AT.-*- K' I+Tsi V ~
1 +T 3s
-/ 3 8 *E 1+ 0.1T 3s
- L K2 A Loop Tavg ->-
1+Ts2 5.1 Step in Loop AT a)
+s (8
- K 3K 3(1 + T 3s) K3K3(T)3 3
- (1 + T s)(1 + 0.1T 3 3 s)
- T (0.l] 1/ +s /0.1T + s 3
3 3 b)
F (s) => f (t)
~
e -
- /0.1T3 e s K 3K3[T3 ) 3 3 3 T i(0.1T 3) If0.1T3 - 3 c)
Step AT = f F(s) = f(t)dt
- O 3 of 8
. Connecticut Yankee I&C Calculation i t
Subject:
Dynamic Response of Low- CALC No. IC-CALC-88-001 Rev. No.' 0 1 I essurizer Pressure Scram Calculators Prep. By John Kowa]chuk Date 2/4/88 f Chkd By &l0 h ateOlloftt 1
~
' I _T g ! e% - (1 -0.1)e.1T, 3
_ K3K3(T) 3 ; / 13, T 3(0.1T 3) y0.1T3 - 3 g
~ e - 0.9 ebs - 0.1 -
_ Ki3 K (T) 3 3 3 .
T i(0.1T 3} y0.1T-N 3 3 i ,0.9T3e ~ 1T - (0.1T3 -T )
= K h,3 (T -T )e 2
3 3 3 3
(T -0.1T 3) 3 d)
Solvefor: K1 = 1.17 K3 = 17.4 Tj = 12 seconds T3 = 15 seconds
- ~
(15 - 12) e 2 - 0.9(15) e .105) - (0.1(15)- 12)
= (1.17)(17.4)
(12 - 0.1(15)) .
4 of 8
. Connecticut Yankee I&C Calculation
Subject:
Dynamic Response of Low CALC No. IC-CALC-88 001 Rev. No. 0
'I essurizer Pressure Scram Calculators Prep. By John Kowalchuk Date 2/4/88 Chkd Byf4l lD Date 2/tb/til 5.2 Ramp in Loop AT a) r' Ramp AT = I F(s) = f(l)dAdt 3
.o.o
~ ~
.i (T3 -T )e Ti - 0.9T 3e 0.1Ts - (0.1T3 -T )
3 3
=
.o KK3 3 dr (Ti -0.1T 3) .
2 2-T -T 33 3 T e i + 0.09T e % 1T 3- (0.1T -T )t 3
=KKi 3 3 (T -0.1T 3) 3 0
2 2- 2 2 0.09T , % 1T - (0.1T -Tj)t-
= KgK3 T -T T )e i i3 i + 3 3 T -T 3 T3 3 + 0.09T3 (T -0.1T 3) 3 b)
Solvefor: K] = 1.17 K3 = 17.4 Tj = 12 seconds T3 = 15 seconds
- (1.17)(17.4) ((12) - (12)(15)) e 2 + 0.09(15) e " - (0.1(15)- 12) t - ((12)' - (12) (15) + 0.09(15)')
(12 - 0.1(15)) 9 . WG l l S of 8
..;c ,
'. Connecticut Yankee I&C Calculation
Subject:
Dynamic Response of Low CALC No. IC-CALC-88-001 Rev. No. 0 (' essurizer Pressure Scram Calculators Prcp. By John _Kowalchuk Date 2/4/88 Chkd By $}lWl Date 3/to/6 5.3 Step in Loop Tavg a)- K 2K 3(1 + T 3s) (s) = Mavg (s) (1 + 2T s)(1 + 0.1T 3 s)
+s K2K3(T) 3 3
_ F2)(0.1T3 )
'1/r2+5 /0.1T + sf.
3 b) F(s) =o f(t) C - e s K2K3(T3 ) 3- 2 3 0.1T3
~ (T )(0.1T 2 3)
'1/ _1 c)
Step T,,, = f F(s) = f(t) di
* -O- *
- _ K2K3(T3 ) 3
~ F2)(0.1T 3) if _14 e - 0.9e 3- 0J -
_ K2K3 (T)3 3 3
- (T 2)(0.1T 3) ,1/ _1
~
l 1 6 of 8 i - - - - _ - - - _
..;c .
Connecticut Yankee I&C Calculation
Subject:
Dynamic Response of Low CALC No.' JC-CALC-88-001 Rev. No. ' 0 l' essurizer Pressure Scram Calculators Prep. By John Kowalchuk Date' 2/4/88 Chkd Byl4f.}-).NWW Date ,T/10/TB (T3 -T 2)e 2 - 0.9T3 e
=KK3 2
.1T -(0.1T3 -T -
(T2 -0.1T 3) . d). Solvefor: K2 = 1 K3 = 17.4 T2 = 2 seconds T3 = 15 seconds i
~
(15 -2) eI2 - 0.9(15) e.105) - (0.1(15) - 2)
= (1)(17.4)
(2 - 0.1(15)) .
~
13 eI2 - 13.5 e .5 + 0.5
= 17.4 0.5 .
= 17.4 26 cI2 - 27 e- .5 + 1 5.4 Ramp in Loop Tavg l a)
Ramp T.,g = } F(s) = f(A.) dA dt l .i (T3 -T 2)e : - 0.9T3e ITs - (0.1T3 -T 2} dt KK2 3 (T2 -0.1T 3) . m 7 of 8 l
- _ _ - _ _ - _ - _ _ _ _ _ _ - _ - - _ _ - - _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ - _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ~ _ _ _ .
'.. t ... Connecticut Yankee I&C Calculation
Subject:
Dynamic Response of Low CALC No. IC-CALC.88 001 Rev. No. 0 I rssurizer Pressure Scram Calculators Prep. By John Kowalghuk Date 2/4/88 f Chkd By As.ll.Wl& Date z/ d l l 2-T2 -T 2T3 e : + 0.09T 3 , %.1T - (0.1T 3 -T 2 ) t
= K 2KS - -
(T2 -0.1T 3) o 2- 2 fT2 -T 2T3 e : + 0.09T 3 , % 1Ts - (0.1T 3 2 -T )Tt2 -T
- 2T 3+ 0.09T 3
= K ,- K,3 (T2 -0.1T 3) b) ,
Solvefor: K2=1 K3 = 17.4 T2 = 2 seconds A T3 = 15 seconds
= (1) (17.4)
' (2)'-(2) (15)) eI2 + 0.09 (15) e "" - (0.1(15)-2) t -((2 (2 - 0.1(15))
~ ~
-26 e 2 + 20.25 e # + 0.51 + 5.75
= 17.4 0.5 .
= 17.4 -52 eI2 + 40.5 e~ .5 + t + 11.5 .
6 e-8 of 8
n - -- . _ . _ r ( ,, .. .. ._. SUR S.2 4.3, Rev. Original
. DEC 211987
- j. .
- p. TB CF1-69 i als:
INDEPENDENT VERIFICATION Pull Pins replaced in th 6.14.6 . b a. TB CF1-37 h b. TB CF1-38
- c. TB CF1-39 A:te.)
M d. TB CF1-40
- e. TB CF1-58 Ah!)
- f. TB CF1-59
[.,4d
- g. TB CF1-60
[ M h. TB CF1-61
- i. TB CF1-62 M j. TB CF1-63
[b b
- k. TB CF1-64
- 1. TB CF1-65 h m.TB CF1-66
- n. TB CF1-67 7
b M o. TB CF1-68
- p. TB CF1-69 Initial ConditNns 6.15 Scram . Calculator Test LABELthe followirgM&TE:
6.15.1 a.12belTransmadon as VS#1and recordID numbe VS#1_ b~ N _
- b. Labe1 Supercals as SC#1 and SC#2 reconiID numberl
& lR L SC#1 S'I8 0 SC#2 (CF-N3-SI).
6.15.2 DISCONNECT time lead from terminal TT-432B and the 4 (+) 6.15.3 CONNECT leadliftedin step 6.15.2. VS#1 (set to o.4 Vdc (505'F)) F N3 Sl}. 6.15.4 DISCONNECT the lead from terminal 3 (+ 13 of 25
)
~.... - - - ~ - - - - _ _ _ _ _ _ _
~.
; :. ' SUR 5.2 4.3, R'ev. ' Original l
' DEC 211987
- . }
6.15.5 CONNECT SC#2 (set to 4.0 Vdc (550*F)) to terminal 3 (-) of TT-432 - I
' leadlifted in step 6.15.4.
" 6.15.6 LIFT the following leads from TMA-431 A (CF-N6-S2):
, a. From terminal 3 (-)(to PM-413) !
- b. From terminal 3 (+) (to PM-413)
CONNECT SC#1 to the leads lifted in step 6.15.6. Observe polarity 6.15.7 J 6.16 Scram Calculator - Tavg Step , 6.16.1 Setup SC#1 for Vdc output ramp as follows :
- a. Setlowlimit to 5.4 Vdc (554*F).
./
- b. Set highlimit to 6.4 Vdc (564'F).
- c. Set time to 1.
/ 6.16.2 ADJUST" SETUP CONDITIONS"as .w ~ = '
follows (HP-7090A): . . . o =i
- a. " RANGE 1" to '10' o..
o=>
/
- b. " OFFSET 1" to 'O' o .- , w o== g
, c. " RANGE 2" to '10' o F.LL -
o ett ==.
/A d. " OFFSET 2" to 'O' o~~~
/ o ;:r.yg.';w a .. -
- e. "TCTTALTIME" to '20.00' second o F4h
- f. "FOSTTRIGGER(+)/PRETRIGGER(-)" mo = * * *=
to 'O SECONDS'
- g. " TRIGGER LEVEL (CHANNEL 1)" to '5.7' O M.sta.L oC s o$ -
H[- 6.16.3. SET"rRIGGER" to ' INT (CHAN 1)' c - .un 1
/ and'ABOVE LEVEL'.
asforsErcin 6.16.4 SET" CHANNEL SELEC1 to 'CHAN l' ,g, and 'CHAN 2 vs TIME'. c l 6.16.5 STORE pmgram to memory to prevent loss. A
/J 6.16.6 LOAD paper (11x 17).
s
%h 14 of 25 a _ _ _ _ _ _ _ - _
, s .
SUR 5.2 4.3, Rev. Original 4 6.16.7 SETUP pen carousel as follows: DEC 211987
- a. #1 - red pen
- b. #2 - blue pen
- c. #3 - green pen
/A
/J d. #4 - black pen
/
2 c. #5 - brown pen
- f. #6-purple pen
/ '
A 6.16.8 CONNECT HP-7090A, chanhel 2, across terminal 3 (+ & -) of j' PY-401-kT432 (CF-N3-S3). Observe polarity. s 6.16.9 CONNECJ 'dP-7090A, channel 1, across the voltage out terminals of the
- SC#1. Observe polarity.
~~~~
o
- 6.16.10 DEPRESS"FILLBUFFER"on
/, the HP-7090A. @ '
6.16.11 INITIATE ramp by placing -
, [
depressing up arrow on SC#1. CE
/
6.16.12 WAIT atleast 1 minute.
/A N 6.16.13 DEPRESS " PLOT BUFFER".
/
6.17 Data Reduction Tavg Step , 6.17.1 SELECT pen 3. b 6.17.2 SET " DATA DISPLAY" to ' PEN POSITION'.
/
A 6.17.3 SET" CHANNEL SELECT' to 'CHAN 2'. 6.17.4 Using cursor control keys position pen to between 3.16 and 3.40 (if this cannot be
/ achieved, depress down arrow on SC#1, wait about 3 minutes then rerun from 6.16:10).
6.17.5 DEPRESS " SHIFT' then the " DATA DISPLAY" key (Ti).
/h -
/J 6.17.6 Using cursor control keys p6sition pen to the highest point on the trace.
/A DEPRESS " SHIFT' then the " DATA DISPLAY" key (T2).
F 6.17.7
/A N 6.17.8 Using cursor control keys position pen to the lowest point on the trace after the peak (leave enough room at the end to label).
/ 5 N 6.17.9 DEPRESS " SHIFT' then the " DATA DISPLAY" key (T3).
6.17.10 SELECT pen 4. . 15 of 25 I
~
5' i N ~ DEC 211987 SUR 5.2 4.3, Rev. Original - e 6.17.11 DEPRESS THE " DATA DISPLAY" key until neither the " PEN POSITION" or
/ " INPUT" light is lit.
6.17.12 Using the cursor keys, position the pen so that it is in an unused portion of the ' chart.
/
I 6.17.13 DEPRESS " SHIFT" then " PRINT TIME". A 6.17.14 DEPRESS " SHIFT" then " LABEL".
\/
6.17.15 Recorti the following information on the chart:
- a. "SUR 5.2-4.3, REV. ORIGINAL"
/ "SECTION 6.16 TAVG STEP" ,
- b. M & TE used and CalDue Date.
/nA c. Name of specialist performing test.
// s d. Label T1,T2 and T3 as shown.
f 2400 Tavg Step input / Scram Calc Output 2200
,, ,' g 2100 sosm cat; oves 2000 .
T1 T3 1900 1800 1700 0 ' Time (S) . 6.17.16 RECORD the values of T1, T2 and T3 in Table 6.17. Table 6.17
=: _ T1 T2 l T3 -
VDC Tune (S) VDC VDC l Time (S)
. l Tune (S) l N 3.94 0.90 % 91 l30 sa ID3 Aceque 3.16-3.40 0.13-0.33 8.06-8.73 3.7-3.9 timits
) .
\ s) 16 of 25
SUR S.2 4.3, Rev. Original Scram Calculator - AT Ramp f 6.18 DEC 211987 i I 6.18.1 Setup SC#2 for Vdc ramp output as follows: A
- a. Setlow limit to 4.0 Vdc (550*F).
/A b. Set high limit to 5.2 Vdc (565'F).
// --
/ ~ ',
- c. Set time to 1.
6.18.2 Set SC#1 to 6.0 Vdc (560*F).
/
A 6.18.3 LOAD paper (11 x 17). .
// CONNECT HP-7090A, channel 1, across the voltage out terminals of SC#2.
4 6.18.4
/ Observe polarity.
6.18.5 CHANGE trigger level of HP-7090A to 4.3. J
$ 6.18.6 CHANGE HP ~1090A " TOTAL TIME" to '60.0' seconds.
/A r 6.18.7 DEPRESS " FILL BUFFER" on the HP-7090A.
/) INITIATE ramp by depressing up arrow on SC#2.
Al 6.18.8
/f N WAIT at least 1 minute.
6.18.9 N 6.18.10 sEPRESS " PLOT BUFFER".
./
6.19 Data Reduction - AT Step .. 6.19.1 SELECT pen 3.
/
6.19.2 SET" DATA DISPLAY" to ' PEN POSITION'. 6.19.3 SET " CHANNEL SELECI" to 'CHAN 2'. i ! _/ Using cursor control keys position pen to between 5.03 and 5.10 (if this cannot be 6.19.4 achieved, depress down arrow on SC#2, wait about 3 minutes then rerun from 6.18.7). 6.19.5 DEPRESS " SHIFT" then the " DATA DISPLAT' key (Tt).
/ Using cursor control keys position pen to the highest point of the trace, 6.19.6
[ 6.19.7 DEPRESS "SHIFI then the "D ATA DISPLAT' key (T2). f / 1 6.19.8 Using cursor control keys position pen to the lowest average point on the trace after the peak (leave enough room after point to print label). 6.19.9 DEPRESS " SHIFT" then the "D ATA DISPLAT' key (T3). 5 6.19.10 DEPRESS THE " DATA DISPLAT' key until neither the " PEN POSITION" or
" INPUT" light is lit.
d 17 of 25 L-_-_--------
. 6 .
= , SUR 5.2 4.3, Rev. Original
' 6.19.11 Using'the cursor keys, position the pen so that it is in an unused portion of the chart.
/ DEC 211987 6.19.12 DEPRESS " SHIFT" then " PRINT TIME".
j , 6.19.13 DEPRESS " SHIFT' then " LABEL".
! 6.19.14 Record the following infortnation on the chart:
- a. "SUR 5.2-4.3, REV. ORIGINAL" "SECTION 6.18 AT STEP"
- b. M & TE used and CalDue Date. '
- c. Name of specialist performing test.
- d. LabelTt,T2 andT3 as shown.
T2 2200 T3 Y 2100 AT Step Input / Scram Calc Output Tl 2000 o
- Di D.
1900
~
i 1800 1700 ' Time (S) 6.19.15 RECOR6 the values of T1,T2 and T3 in Table 6.19. Table 6.19 T3 T1 T2
= ,,
VDC VDC l Tune (S) Tune (S) l Tune (S)
"'] VDC Sh%f
~
E $bN l .dO /, .5Y lo.90 (o.lA 6.61-7.00 WET 4,2@3 6.05-6.25 ERKCAT ( Q{p 5.03-5.10 1.00-1.27 v 18 of 25
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RESPONSES TO IGtC AUDIT ITEMS 0F FEBRUARY 14-17, 1989 ATT ACHMENT 3 J N R /g e k' MS3.42 a f
NORTHEAST UTILITIES
}
l l !E55d E
' L E':TEEE=
Page 1 SEISHIC QUALIFICATION REVIEW
REFERENCES:
- 1. NUSCO Drawing #16103-28050, Sheets A - D
- 2. NUSCO Drawing #16103-22018, Sheet 2
- 3. FOXBORO Test Reports #Q0AAA39, Rev. C and Q0AAA27, Rev. C
- 4. NTS Test Report Numbers 22762-87N-1 and 22762-87N
- 5. Connecticut Yankee Response Spectra, URS/Blume, November 1981 The Reactor Protection System modifications described in PDCR #861 consists of changes to the main control boards, the installation of a pressurizer pressure transmitter inside the containment, instella-tion of Spec 200 cabinet rack modules, installation of five power supplies, and. installation of supports for the cable entry to the Main Control Board.
The changes to the Main Control Boards consist of replacing numerous indicators and recorders with functionally equivalent state-of-the-art components weighing substantially less than their predecessors. All of these items are supported according to the manufacturer's s p e c i f i c a t i o n s ., But for two exceptions, the net effect of the changes is a reduction in the weight distribution in the MCBs. The two exceptions are supported in a way that will ensure its function-ality and integrity during a seismic event. The pressurizer pressure transmitter is an addition to three exist-ing si mi l a r, i t ems . This fourth item will be supported similar to the existing transmitters, as documented in Reference 1. The tubing will be routed and supported as shown in Reference 2. The tubing will tee off an existing tubing run and thus affect its 'cherent flexibility. Depending on how the existing tubing run is n ,forted this addition may or may not significantly affect the flexibility. The containment area where this tubing run is located is not readily accessible so that the exact layout of the tubing, which must be known before the significance of the addition may be assessed, will not be determined prior to the time of installation. At that time the tubing support configuration may be adequately modified through (. a DCN to the PDCR to ensure the seismic integrity of the system.
O
,i NORTHEAST UTILITIES
- ===='."~'
( 1
=.7=.'=""~'
= = = ==
Page 2 SEISMIC QUALIFICATION REVIEW Spec 200 cabinet rack mounted modules are being installed in avail-able slots of cabinets which were qualified with all slots filled. Therefore, the changes do not create an unreviewed situation. The five power supplies to be installed in an existing cabinet will not present a problem since the cabinet is being vacated by more than 100 lbs of equipment whose center of gravity is at a higher elevatier than where the power supplies are to be mounted. The weighty qualification documentation referenced shows that rela-tive to the required response spectra, the equipment to be installed will possess substantially enveloping test response spectra. , Consistent with Attachment 8B of NE0 5.19, all pertinent documents have been reviewed and demonstrate the seismic adequacy of the modifications proposed for PDCR #861. PREPARED BY: K. F4 Frame h ' DATE: 4 /28//87
'/
Generation Mechanical Engineering
/ /
APPROVED BY: ij N DATE: 2 C. J. Gladding Generation Mechanical E ineering KFF:beb 04/16/87 1 15.19 I i l 1 l I l e __ _ _ ___ -___-_ ._
.-4 a e
> .J '
.o s
SEISMIC QUALIFICATION REVIEW CONNECTICUT YANKEE REACTOR PROTECTION SYSTEM UPGRADE , Generation Engineering Hechanics has reviewed Ehe Test Response Spectra (TRS) for the Foxboro contact output isolators (2AO-L2C-R) documented in the Foxboro Company Corporate Quality Assurance Laboratory Type Test Report 00AAB34, Revision C. Although the equipment did not meet the target TRS acceptance criteria at the Safe Shutdown Earthquake (SSE) level, the equipment is adequate since the target TRS acceptance criteria at the Operating Dasis Earthquake (RRS) for t he SSE conditions at Connecticut Yankee (Ref(OBE)
. Blume Figureslevel was met which 25, 26
& 27). It should be noted that at frequencies less than 1 Hz, the TRS did not meet the required margin of 10% as recommended by IEEE-344. Considering the conservatism associated with the TRS curves and the fact that the component does not possess any natural frequencies below 1 Hz, this is deemed acceptable.
PREPARED BY: 8 ~ DATE: 3' # 6 H. S'Etre ~ REVIEVED BY: I///[r#b DATE: .3.29 89 F. W. Martsen /
/
APPROVED BY: . kky DATE: f/21[M H.pupinsi l
'l A8.31 (mm) l
. _ - _ _ _ _ _ _ _ . _ . _ _ - _ _}}