ML20081C153
| ML20081C153 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 03/05/1984 |
| From: | Fay C WISCONSIN ELECTRIC POWER CO. |
| To: | Harold Denton, John Miller Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.F.1, TASK-TM TAC-54596, TAC-54597, NUDOCS 8403120157 | |
| Download: ML20081C153 (3) | |
Text
Msconsin Electnc eom cown 23% W. MICHIGAN, P.O. BOX 2046. MILWAUKEE, WI 53201 March 5, 1984 Mr. H.
R. Denton, Director Office of Nuclear Reactor Regulation U.
S. NUCLEAR REGULATORY COMMISSION Washington, D. C.
20555 Attention:
Mr.
J.
R. Miller, Chief Operating Reactors, Branch 3 Gentlemen:
DOCKET NOS. 50-266 AND 50-301 IMPLEMENTATION OF POST-TMI RELATED ISSUES POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 On June 16, 1983 we sent you a letter discussing several equipment receipt and installation delays which impacted the schedular commitments in the NRC's " Order Confirming Licensee Commitments on Post-TMI Related Issues" dated March 14, 1983.
The delays discussed in the June 16 letter concerned receipt and installation of the auxiliary safety instrumentation panels (ASIP's) and the instrumentation bus upgrade.
Subsequently, the NRC issued a modified Confirming Order dated July 12, 1983.
The July 12 Confirming Order extended the completion dates for the accident monitors addressed by NUREG-0737, Items II.F.1.1 through II.F.1.6, to June 30, 1984.
Since your July 12 letter, we have experienced additional delays in the design of floor penetrations for cables to the ASIP's.
We had expected to reach agreement with the contractor on the panel and penetration assembly mechanical design by July 15, 1983.
- However, agreement was not reached until the end of December.
Also, due to a lack of design expertise and interactions with seismic conduit support, the design of the penetrations was transferred from the panel manufacturer to a third party.
The penetration design was only recently completed and fabrication is expected to begin shortly.
We have also had to make changes to the panel to accommodate a new electrical interfacing system for the Crosby lift indicating switch assemblies (LISA's) for the pressurizer safety valves to enable 8403120157 840305 PDR ADOCK 05000266 Ah P
pg O
w '
y--
f i'
.q
%y J
n Mr. H.
R.
Denton
-2 March 5, 1984
~
1 s
the LISA's.to meet their equipment operability and qualification requirements.
This involved structural changes in the panels which delayed fabrication completion and instrument installation.
i Assuming no further-delays in-design, fabrication, or installat on, we expect to meet the following schedule.for installation and startup of the ASIP's:
ASIP's delivered to Point Beach.
' April 30, 1984 ASIP installation complete.
i July.31,'1984 Startup and testing of instruments October 31,'1984
- q.
and final power supplies.
4 j ='
4 Instruments integrated into procedures December 31, 1984 - -
%. i and operator-training on procedures p
complete..
yi Since our Junell6 letter, we have also experienced
. additional. delays.in the. completion of the Point. Beach instrument bus. upgrade.
One major.. remaining delay in the completion of this item A the delay of the'ASIP installation.
The ASIP's affect n.,
the bus. upgrade.because the control and.the switching circuitry Q
<L for the instrument: bus. upgrade will,be.. located in the Unit 2 ASIP's,
~
r % 1'
.-AsThefore, the._other majorudelay has been the design and delivery 3
of the' wentilation and air' conditioning (VAC) system for the
'f
1 4 battery ~and equipment rooms.
One causal factor in this delay is s
F that the manafacturer of-the air handling' units for our VAC system f;<
was recently 6urchased'by another non'-U.-S.-based company which h*
. elected to discontinue manufacturing its line of safety-related 1
air handling ' units.
This change in management, frequent changes gf-in manufacturer project personnel, 'and' the dropping of the ' product t
line resulted'in the manufacturer assigning a'very low priority for the design.and: manufacture of our air handling units, the last such Qq.
units that - the supplier will manufactiure for the nuclear industry.
3 Unfortunately, we expect more delays in the manufacture and ' assembly of our air -handling. units.
The most recent manufacturer's w.
' schedule-indicated a. shipping date of March 16, 1984.
However, a recent letter from the manufacturer stated that another delay of up to three weeks may--occur. IBased on past experience, it is almost
- e certain that this delay.and possibly others will occur.
Another factor.which.will delay..the< final installation and operation of the VAC' system is the delivary,of.the associated cooling coils which will be-shipped (separately from the fans'and housings.
The vendor has noteddhat theap are expected to be delivered in May 1984.
V h
A.
s "8 g
\\
-wg
' M g
j'l g%
'\\ ?
?
^
s, q;
e-g.ss,
. y
.s
. +
s
^* '
Mr. H.
R.
Denton March 5, 1984 Based on a late March delivery of the air handling units-we had planned on having the VAC system complete by July 1, 1984.
However, in view of the delays noted above, we currently cannot commit to having the VAC system fully opera-tional.until approximately three months after the air handling units and their cooling coils are delivered to Poing Beach.
Considering only the currently known delays this wghld mean that mid-September would be the earliest completion da,te possible.
As we committed in our June 16 letter, with recent completion of an interim power supply configuration for Unit 1 similar to the Unit 2' configuration completed in the spring of 1983, the new 120v AC instrument distribution panels supplying the new SPEC 200 and auxiliary instrument racks and equipment for both units are connected to safety-grade power supplies.
Additionally, the accident monitors addressed by NUREG-0737, Items II.F.1.3 through II.F.1.6, are installed and operational up to these instrumentation racks.
The high-range containment pressure (II.F.1.4) indications are installed in their permanent locations in the main control boards in the control room for both Unit 1 and Unit 2.
One channel of each of the following have been connected to the backup computer and are available in the control ~ room to the operators on CRT displays for each unit:
high-range containment radiation monitor (II.F.1.3), containment sump water level (II.F.1.5), containment hydrogen monitor (II.F.1.6),
and subcooling, reactor vessel water level, and gas vent header pressure.
-However, due to the latest delays in the delivery and installation of the ASIP's we will not be able to complete the installation of the final display configurations of the six accident monitors addressed in NUREG-0737, Items II.F.1.1 through
-II.F.1.6, by June 30, 1984 as required by the July 12, 1983 Confirming Order.
They will be fully operational upon completion of the ASIP's, now scheduled for December 1984.
We, therefore, requestithat the July 12 Confirming Order be modified-to reflect the revised ASIP installation and startup schedule discussed earlier in this letter.
Please contact us if you have any further questions concerning_this information.
Very truly yours, duh Vice President-Nuclear Power C. W. Fay Copies to NRC Resident _ Inspector NRC Region III i
- - - - - - - - - -