ML19324B805
| ML19324B805 | |
| Person / Time | |
|---|---|
| Site: | Harris, Brunswick, 05000000 |
| Issue date: | 09/28/1989 |
| From: | Mcdowell J CAROLINA POWER & LIGHT CO. |
| To: | NORTH CAROLINA, STATE OF |
| Shared Package | |
| ML19324B804 | List: |
| References | |
| ESS-89-578, NUDOCS 8911080271 | |
| Download: ML19324B805 (3) | |
Text
Q O
9 Carohne Power & Light Company SEP 2 81989 1
SEPIAL NO.: ESS-89-578 r
Division of Environmental Menagement Water Quality Section ATTENTION: Central Files Post Office Sox 27687 Raleigh, Nortt. Carolina 27611-76E7 i
RE:
Regulation 15 NCAC 2B.0505 NPDES Monitoring Report Gentlemen:
In accordance with Regulation 15 NCAC 2B.0505, please find enclosed the August 1989, NPDES Wastewater Monitoring Reports for the following CP&L
[
facilities:
i Asheville Steam Electric Plant l
Brunswick Nuclear Project Brunswick Media Center Sewage Treatment Plant Cape Fear Steam Electric Plant Lee Steam Electric Plant Marshall Hydroelectcie Plant Mayo Steam Electric Plant Rosboro Steam Electric Plant Shearon Harris Nuclear Power Plant Sutton Steam Electric Plant T111ery Hydrcelectric Plant Weatherspoon Steam Electric Plant Harris Energy & Environmental Center Harris Bio-Assay 1.abcratory Please note that beginning with this submittal. a computer-generated Discharge Monitoring Form is being utilized for the Shearon Harris Nuclear Pcver Plant. This form contains the same information as the Division of Envirdnmental Management form.
If there are any concerns with the form.
please advise.
8911080271 891101 l
PDR ADOCK 05000324 s
PDC l
411 Fayettevene Street e P O Boa 1$51
- Raleigh N C 27602
' """~~2:'~~T"JT22%W:XCC M :~*2?7 l
l
-.i-7
,g,,g:n rr r
-.g,,_ - n
- i a
,, a,
'T' i*
- 2.,
l 7., ' q..,..
. w, Please contact me at'(919) 546-6920 if there are any questions concerning-
-tho' data in this ' submittal.
4
+
Yours very truly.-
[N.," ' >
.yyq ej c' /. '
(gM *1 1 +'r J 'e...
~'
J. M. HoDowell-ig o
' Principal Engineer Q;%
cg m:
Environmental Cowpliance FR N '[Eh.),(p >pli BWSidos f1, 59-89 hts).
+
o 9*,
j
.,4
.1 1
g' '
t' I'
, enc 10Sure'J s't h, i
. m-m # ;/, '
' ocs Pr."",im Donnelly - DEM
'n3v boot. Mr. B. J..Furr.
Mr. L. I. Loflin (with enclosure) A
' Dr. G. J. Oliver j
' J s.
s 4'
.i.
-t f
)
a q%
f
- ?
r 4
]
c's A
t
- 4,
\\
l
-+
g
.f s
f 4
L4
.k.
..q ATTACRMEffT To ESS-89-578 i
BRUNSWICK STEAM ELECTRIC PLANT NPDES REPORT FOR AUGUST 1989 i
i Once-Through Cooling Water - Flow Limitations Brunswick Steam Electric Plant Unit 2 exceeded the NPDES flow limits on August 23 and 24 1989.
The permit specifies that only one unit at the time may increase its flow above 1105 efs (maximum allowable limit 1230 ofs) during July, August, and September. The additional flow is ccoomplished by placing a fourth pump in operation.
On August 23 and 24, 1989, BSEP operated with four circulatint water pumps in service on both units.
On August 23, at 1656. the c
20 pump ytt h coarse mes h screens was placed in service due to ni gh i
dif f erential presAure on the 2B circulating water pump.
The 20 pump was i
secured at 1753. Taus, flow limitations were exceeded for 57 minutes.
)
On August 24 at 1718, the 2C pump was again placed in service due to high
~
differential pressure on all three fine mesh screens. The 2C rump was removed fran servim at 1913 on August 24 Flow limitations were exceeded fer 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> ano 55 minu,es.
The additional pumps were pikeed in service as a precaution in case the other pumps, which were experiencing difficultit:s, also tripped.
All efforts were made to keep the unit on-line.
Unit No. 1 was operating at j
the maximum allowable flew of 1230 efs during this time.
Although the cause of the high differential pressure experienced across the fine mesh screens has not been determined, it is suspected that clogging with debris contributed to the problem.
(Ref erence Attachment to ESS-89-531 submitted August 28, 1989, for the Brunswick Steam Electric Plant. )
Fine Mesh Screens I
The NPDES permit requires the operation of three fine mesh screened
[
circulating water intake pumps when three or more pumps are in service on a l
unit. During August, there were three incidents when Unit 2 operated with two fine mesh and one coarse (3/8") mesh screened pumps in service.
At 0420, August 16, 1989, the shear pin on the screen drive motor failed on the 2D circulating water pump causing the fine mesh s creen to stop rotating. At 0425, the 20 pump was placed in service and the 2D pump was shut l
down for screen repairs.
Repairs were completed on the 2D pump, and it was l
returned to service at 1750, August 16, 1989.
The 20 pump was shut down at that time.
(The 2D pump was out of service 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> and 30 minutes.)
l l
On August 22, the 2B fine mesh screen tripped off-line at 1616, due to I
high differential pressure.
It was placed back in s er vice at 0036 on August 23.
(The 2B pump was out of service 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and 20 minutes. )
On August 24, the 2A fine mesh screen tripped off line at 1447, also due to high diff erential pressure.
It was returne d te s er vice at 1718 on l
August 24 (The 2A pump was out of service for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and 31 minutes. )
As stated above, it is believed the high differential pressure was caused by clogging of the screens with debris.
(89 140BWS: des)
.