ML20245D287

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Proposed Tech Specs Re Limiting Conditions for Operation & Surveillance Requirements for Ice Condenser Ice Bed
ML20245D287
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Site: Sequoyah Tennessee Valley Authority icon.png
Issue date: 06/20/1989
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TENNESSEE VALLEY AUTHORITY
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ML20245D267 List:
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NUDOCS 8906270044
Download: ML20245D287 (148)


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{{#Wiki_filter:... l4 i I ENCLOSURE 1 PROPOSED TECHNICAL SPECIFICATION CHANGE j 1 SEQUOYAH NUCLEAR PLANT UNIT 1 ,_ j 4 DOCKET NO. 50-327 (TVA-SQN-TS-89-24) $ J l I LIST OF AFFECTED PAGE l Unit 1 3/4 6-26 l  ? l l 1 1 j l 1 l 4 I I j 8906270044 890620 g PDR ADOCK 05000327 PNU g f ( p m_______ _ _ . _ _ . _ . . _ _ _ _ _ __ _ _ _ _ _ _ _ . _ j

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i CONTAINMENT SYSTEMS 3/4.6.5 ICE C0h0ENSER .. _I_CE BED LIMITING CONDITION FOR OPERATION 3.6.5.1. The ice bed shall be OPERABLE with:

a. The stored ice having a coron concentration of at least 1800 ppm boron as sodium tetraborate and a pH of 9.0 to 9.5,
b. Flow channels through the ice condenser,
c. A maximum ice bed temperature of less than or equal 27 F,
d. A total ice weight of at least 2,333,100 pounds at a 95% level of confidence, and R7
e. 1944 ice baskets.

APPLICABILITY: MODES 1, 2, 3 and 4 ACTION: With the ice bed inoperable, restore the ice bed to OPERABLE status within 48 hours or be in at least HOT STANDBY within the next 6 hours and in COLD SHUTDOWN within the following 30 hours.

                         ~ SURVEILLANCE REQUIREMENTS 4.6.5.1      The ice condenser shall be determined OPERABLE:

a. At least once per 12 hours by using the ice bed temperature monitoring system to verify that the maximum ice bed temperature is less than or equal to 27 F. b. At least once per 6 months during the first 2 years following initial criticality and at least once oer 12 months thereafter by:

1. Chemical analyses which verify that at least 9 representative samples of stored i ce have a boron concentration of at least 1800 ppm as sodium tetraborate and a pH of 9.,0 to 9.5 at 20C.
  • 2. Weighing a representative sample of at least 144 ice baskets g7 and verifying that each basket contains at least 1200 lbs of ice. The representative sample shall include 6 baskets from each of the 24 ice condenser bays and shall be constituted of SECUCVAH - UNIT ' 3/4 6-26 A ene -. hm t C&enswn is ferm,Nek unS.l ike. 3/6/81 un,b I c rt E cl. svig e. ad,.cf CI, ell begm
                             ,w     laterycle      4 L Apr.'l 1, 1990
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ENCLOSURE'2 PROPOSED TECHNICAL SPECIFICATION CHANGE SEQUOYAH NUCLEAR PLANT UNIT 1 .. DOCKET NO. 50-327 ll (TVA-SQN-TS-89-24) DESCRIPTION AND JUSTIFICATION FOR THE. EXTENSION OF SURVEILLANCE REQUIREMENT 4.6.5.1.b.2

i ENCLOSURE 2 . I Description of Change l j Tennessee-Valley Authority (TVA). proposes to modify the Sequoyah. Nuclear Pldnt ] (SQN) Unit 1 technical specifications (TS) to revise. Surveillance Requirement. ' (SR) 4.6.5.1.b.2 to allow a one-time extension of the 12-month _ ice-weighing-interval. Reason for Change.

                                                'IVA is requesting an extension of SR 4.6.5.1.b.2 to postpone. weighing of ice-                                                                                                                     )

until the Unit 1 Cycle 4 refueling outage, which is projected to begin .; April 1, 1990. The last ice-weight surveillance performed for SQN. Unit 1 was ccmpleted September 16, 1988. .SR 4.6.5.1.b.2 requires that the next' ice-weighing surveillance be performed within 12 months.of that date (i.e... September- 15, 1989), Applying the provisions of TS 4.0.2 would allow an - extension of the surveillance interval by a maximum of 3 months (i.e. - December 15, 1989). TVA is requesting an additional 3-1/2-month' extension to allow the ice-weigh'.ng outage to be conducted coincident with-the Unit 1 Cycle 4 refuelit.g catage. This 3-1/2-month' extension would provide increased . 3

                                                 -plant availability (elimination of a 20- to 30-day mode 5 outage to weigh ice) and would allow for more efficient use of manpower.

Justification for Change SR 4.6.5.1.b.2 requires that each basket contain at least 1,200 pounds (1bs) of ice and that the average ice weight for the bay analysis and the group-row analysis not be less than 1,200 lbs per basket at a 95 percent level of; confidence at the start of the surveillance interval. SQN's 1,200-lb TS limit is based on a containment analysis that assumes a 1,080-1b per basket ice weight. The 1,200-1b per basket TS-limit contains a 10 percent conservative i allowance for ice loss through sublimation during the interval between J weighings and a 1 percent conservative allowance for ice-weighing instrument error. The TS limit thereby provides a weight-per-basket ice weight that is more than 11 percent higher than the per basket' ice weight assumed for the-ice condenser design. The basis for the minimum ice weight is as follows: 1,080 x 1.10 x 1.01 ~ 1,200 lbs In addition to the above, the minimum total ice condenser ice weight at a- j 95 percent level of confidence must not be less than 2,333,100 lbs. In order to ensure a sufficient quantity of ice is-available, the TS SR 4.6.5.1 requires that a sample of at'least 144-ice baskets be weighed on a  ! 12-month basis. This sample includes one' basket from six rows (radial rows 1, 2, 4, 6, 8, and 9) of each of the 24 bays (refer to the attached Figures 1 and 2 of this enclosure for a representation of ice condenser bays, groups, and rows). If any basket is found to contain less than 1,200 lbs of ice, an i l

I 1 i Ti additional 20 baskets from the same bay must be weighed. The minimum average ' ice weight from the 20 additional baskets'and'the discrepant basket shall not be.less than 1,200 lbs per basket ~at a 95 percent level'of confidence. The rows are then subdivided into three groups (group 1.- bays 1 through 8, group _ ., 2 -- bays 9- through -16. group 3 - bays 17 through 24). The minimum average j weight of the group-row combinations and bays must not be less than 1,200 lbs i per ba=ket at-a 95 percent level of confidence. This ensures the overall ice j weight is not less than 2,333,100 lbs.  ; l Utilizing the data from previous ice-weighing surveillance, the ice' loss was -) calculated. 'This calculation produced an average sublimation rate over the I time period from September 1981 to April 1985. The average sublimation rates l for the respective areas of the ice condenser (bay / group-row)-were then  ! applied over an 18-1/2-month period. The beginning weights in each bay or-group-row were obtained from the September 16, 1988, ice-weight performance. ) This method is conservative in that the surveillance history shows that the i sublimation rate has decreased since the initial ice weighing. The calculation shows that for the bay analysis, using the predicte'd sublimation rate for 18-1/2 months, all bays would be above the-1,080-lb' analytical value. The overall average weight per basket based on 18-1/2 months between weighings for the bay analysis is 1,264 lbs, which yields a total predicted ice condenser ice weight of. 2,458,188 lbs. 3 The calculation shows that for the group-row' analysis, using the predicted sublimation rates for 18-1/2 months, all group-rows would have an average - weight greater than the 1,030-lb analytical limit with:the exception of group 3 - row 1. Group 3 - row 1 is projected to have an average basket weight of 1.026 lbs at 18-1/2 months. This low projected rate is due.to the high standard deviation caused by a single low weight basket found.during the 3 September 1988 surveillance. One basket weighed 746 lbs. All other baskets weighed during the group 3 - row 11 inspection weighed in excess of 1.300 lbs. In determining the 95 percent confidence weight, the single. low weight basket statistically skewed the initial average basket weight from 1,314.lbs to 1,215 lbs. An additional calculation was performed to determine the average weight per. basket for each group in the 18-1/2-month group-row projection. The results of this calculation are as follows: 1 l l Average Weight per Basket (1bs)

                                                                                                             ]

i croup 1 1,252 j Jroup 2 1.256 j Group 3 -1,204 j i The above averages' indicate that each group would provide a projected weight I well above the 1,030-lb analytical limit. It should also be noted that- .] the overall average weight per basket for the group-row analysis is 1,237 lbs. i I

t l The total ice condenser ice weight at 18-1/2 months using the group-row analysis is 2,405,311 lbs. This provides a 305,311-lb margin above the 2,100,000-lb analytical limit for total ice weight. Impact of Weight Eelow The Analytical Limit The current containment analysis to determine the peak containment pressure l assumes an initial ice weight of 2.1 million 1bs. The analysis was performed with the LOTIC I computer code. LOTIC I ice bed flow can be up or down, but - it is assumed to be uniform in the horizontal plane. As a consequence, it follows that all ice baskets are assumed to have the same weight of ice. This is currently 1,080 lbs. The analysis, therefore, predicts that the entire ice bed melts out at a single point in time. In reality, because the basket weights vary, some portions of the ice bed will melt out before others. The analysis is valid as long as the actual time the first section of the ice bed will melt out is no earlier than the analysis assumes the entire ice bed melts out. The TS weight for individual bays and group-rows was established to ensure the validity of the LOTIC I analysis without explicitly having to address channeling in one or more sections of the ice bed. Since the sublimation calculation shows that there is a potential for one section of the ice condenser to have an average weight less than the analytical limit, it is necessary to address the potential for the effects of a portion of group 3 - row 1 melting out at a time earlier than assumed in the Final Safety Analysis Report (FSAR) containment 'nalysis. The containment analysis has a number of conservatism that will be eval ated to address this question. These fall into four major groups: mass and energy releases, maldistribution, containment spray, and other general conservatism. Mass and Energy Releases There are a number of conservatism associated with the mass and energy j releases. The peak pressure in containment is directly tied to the amount of energy released and the rate at which it is released. The controlling event for containment pressure is the instantaneous, double-ended rupture of the crossover leg in the main loop piping of the reactor coolant system. In the FSAR analysis, there are two distinct pressure peaks. The first occurs during ] the blowdown period (first 25 seconds) and has a magnitude of about 8 pounds ] per square inch gauge (psig). The second peak of about 11 psig occurs at  ! 3,500 seconds, shortly after the ice bed melts out (3,000 seconds). This 1 second peak is driven by the amount of steam being produced in the core because of decay heat. When the emergency core cooling system pumps are j switched from the injection mode to the recirculation mode from the emergency sump, the analysis assumes that all available energy is used to produce steam. Any water that cannot be converted to steam is put in the sump at the exit temperature of the residual heat removal heat exchanger. This is an  ; extremely conservative assumption. i l _ - - - ~ _ _ _ _ _ _ _ _ - - _ - - -. - - _ - - - - . _ - - . - __ J

1 _4_ Westinghouse Electric Corporation has developed new loss of coolant accident (LOCA) mass and energy release rates based on a model that uses some of the ) decay heat to heat up water that will spill to the sump, reducing the amount ) of steam released to the containment and thus having .to be removed in the ice , bed. The methodology for the new mass and energy releases is described in i

   " Westinghouse LOCA Mass and Energy Release Model for Containment Design -

March 1979 Version,".WCAP.- 10325-P-A, May 5, 1983 (proprietary). TVA has preliminary containment pressure analyses for, SQN based on these new mass and energy release rates. The results.of this analysis, based on the current - J analytical ice bed weight of.2.1 million 1bs, show a peak containment pressure ' of about 8 psig. Ice bed meltout is substantially delayed, and the  : containment pressure after ice bed.meltout is less than 4.5 psig. The 4.5 psig compares with 11 psig that results from the present FSAR mass and-energy release model. Results for an initial ice bed weight of 1.8 million 1bs showed a peak pressure of.8 psig occurred during blowdown and i that the pressure at' ice bed meltout was about 5.5 psig. . This ice weight I gives an average basket weight of.926 lbs. The projected weight'of group l 3 - row 1 baskets is 100 lbs greater than this value. This improved analytical technique shows that the current ice bed loading for SQN adequately j protects the health and safety of the public. TVA is planning to submit.a permanent change to TSs later this year based on these new mass and energy releases with the resulting containment analysis. ) Ma1 distribution In the preceding discussion, it was established that, even if the entire ice bed had an average weight of 1,026 lbs (projected weight of group 3 - row 1), the peak containment pressure would not exceed the design pressure of 12 psig. The following discussion will address the issue of maldistribution of flow because of one or more light baskets to show that considerable i conservatism exists using the current FSAR analysis as the basis. j Group 3 - row 1 contains 72 baskets. In the last ice-weight surveillance, 13 baskets were weighed. Of these, 12 weighed more than 1,300'1bs. From this it can be concluded that most of the baskets in group 3 - row 1 would have ice in them at 3,000 seconds after a LOCA. The survelliance and the sublimation calculation established that the other group-rows will have ice remaining at 3,000 seconds based on current FSAR analysis and mass and energy. release assumptions. Because of this, it is expected that each light basket would be surrounded by acceptably loaded baskets. If a basket was' completely melted out, a 1-foot diameter chranel would exist through the ice bed. However..the additional surrounding basmets would continue to condense the steam. Such a j channel would represent a much smaller bypass than an equivalent size opening ) in the divider deck. The FSAR provides a discussion of the sensitivity of peak containment pressure to various size openings in the divider deck , allowingtheicecondensertobebypassed. "The FSAR analysis assumes a bypass of 5 ft of which only 2 f t' has been p'.ysically identified for SQN. The sensitivity analyses show acceptable results for direct bypass up to 34 ft*. .Because of the close proximity of baskets in the ice bed, a 1 1erger bypass area in the. ice bed would be acceptable because of the ability to condense steam on adjacent baskets and cold surfaces.

                                                                                 - __.__._______a

t _5_ I Containment Spray Another factor to consider in evaluating the margin in the current containment analysis is the operation of the containment spray system. The containment __ spray system is located in the upper compartment of the SQN containment. There are two redundant trains each with a flow rate of 4,750 gallons per minute. Farly in the accident, the spray system takes suction from the refueling water storage tank, which has a maximum temperature of 105 degrees Fahrenheit (F). In the long term, the spray takes suction from - the emergency sump. The water from the sump is cooled by essential raw cooling water (river water) in the containment spray heat exchanger before it is sprayed into the upper compartment. Because of the effectiveness of the ice condenser, the only energy being removed by the spray system until ice bed meltout occurs is the condensation of steam in upper containment that directly bypassed the divider deck. The large volume of water being sprayed into upper i containment is thereby available to condense any steam that would have bypassed the ice condenser. l In the analysis, the sprays are actually adding energy to the containment because the water is warmer than the upper compartment inir.ial temperature and is much warmer than the air exiting the ice condenser. The effect of this is seen in the containment pressure and temperature plots where upper compartment temperature rises from about 80 degrees F to 105 degrees F when the sprays are started. When the sprays are stopped to realign the pump suction from the 1 refueling water storage tank to the emergency sump, the upper compartment temperature and the containment pressure drop sharply because of the effect of , the cold air exiting the ice condenser. i Should steam not be condensed in the ice condenser because of light baskets in group 3 - row 1, the containment spray would be very effective in condensing this steam, thus limiting the impact on containment pressure. Other Conservatism The containment analysis for SQN is performed in a manner that is consistent with the guidance provided in Standard Review Plan 6.2.1.1.B. The containment free volume and structural heat sink surface area is conservatively low. The single failure chosen is the loss of one complete train of safeguards equipment. The initial reactor power was taken to be 3,666 megawatts (MW) instead of the 3,411 MW reactor rating (reference SQN FSAR, page 6.2-36). Decay heat is calculated using conservative uncertainty bands as described by the Westinghouse standard decay heat curve. This curve is quite similar to the analogous American Nuclear Society +20 percent decay heat curve. Worst-case initial temperature conditions are assumed to exist for the containment, outside air, refueling water storage tank, and river water. These conditions are assumed to remain at the upper limits throughout the course of the accident.

t Conclusions It can be concluded, based on TVA's sublimation calculation, that sufficient _ ice will be present at the end of an 18-1/2-month operating cycle to meet the TS requirement for the total amount of ice in the ice condenser. Based on the above discussions, it can also be concluded th-t the low projected weight for ~ group 3 - row 1 is acceptable for a one-time extension of the surveillance interval. Preliminary analyses using NRC-approved methodologies (WCAP-10325-P-A) establish that sufficient ice is present in all regions of the ice bed to keep the peak containment pressure below 12 psig and to prevent premature burn-through of the ice bed. In addition, numerous other conservatism have been described to show that large margins of safety are present in the analysis. Environmental Impact Evaluation The proposed change request does not involve an unreviewed environmental question because operation of SQN Units 1 and 2 in accordance with this change. would not alter any assumptions or information contained in the " Final Environmental Statement of Sequoyah Nuclear Plant Units 1 and 2" dated February 13, 1974. 1 l l

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ENCLOSURE 3 PROPOSED TECHNICAL SPECIFICATION CHANGE SEQUOYAH NUCLEAR PLANT UNIT 1. ._ DOCKET NO. 30-327 (TVA-SQN-TS-89-24) DETERMINATION OF NO SIGNIFICANT HAZARDS CONSIDERATIONS. 1

s ENCLOSURE 3 Significant Hazards Evaluation

                                                                                                                     ,i TVA has evaluated the proposed technical specification change and has determined that it does not represent a significant hazards consideration based on criteria established in 10 CFR 50.92(c). Operation of SQN in                ,

accordance with the proposed amendment will not: l (1) Involve a significant increase in the probability or consequences of an I accident previously evaluated. TVA proposes to modify the SQN Unit 1 ISs ] to revise Surveillance Requirement 4.6.5.1.6.2 to allow a one-time ' extension of the 12-month ice-weighing interval. The last ice-weight. surveillance was performed September 16, 1988. TVA is requesting a one-time extension to allow the next ice-weighing to be conducted during the Unit 1 Cycle 4 refueling outage that is currently scheduled to begin April 1, 1990. The ice condenser system is provided to absorb thermal energy release following a LOCA or HELB and to limit the peak pressure inside containment. The current ice condenser analysis for SQN is. based on a minimum of 1,080 lbs of ice per basket. TVA's calculation shows that for the bay analysis, using the predicted sublimation rate for 18-1/2 months, 1 all bays would have an average basket weight in excess of 1,080 lbs. ' TVA's calculation shows that for the group-row analysis using the i predicted sublimation rate for 18-1/2 months, all group-rows would have an average basket weight above 1,030 lbs with the exception of group 3 - i row 1. The predicted average basket weight in this region was 1,026 lbs, ) which is 5 percent low. TVA evaluated the impact of the low weight in ] group 3 - row 1. TVA's evaluation addressed the potential for and the { effects of a group 3 - row 1 melting out at a time earlier than the time  ! assumed in SQN's FSAR containment. I Based on TVA's evaluation and the improved surveillance history of the i SQN ice baskets. TVA considers the distribution of ice to be acceptable I for satisfying the basic safety function of the ice condenser for the proposed one-time extension. The proposed change, therefore, does not involve a significant increase in the probability or consequences of an j accident previously evaluated. { (2) Create the possibility of a-new or different kind of accident from any previously analyzed. TVA's request for a 3-1/2-month extension of the 12-month ice-weighing interval will not result-in a new or different kind of accident from that previously analyzed in SQN's FSAR. SQN's ice condenser serves to limit the peak pressure inside containment following a loss of coolant accident (LOCA) or high-energy line break (HELB). TVA has evaluated SQN's FSAR analysis in conjunction with the preliminary ) containment pressure analysis for SQN to show that sufficient ice would l be present during the requested extension period to keep the peak ' containment pressure below SQN's containment design pressure of 12 psig. i 1 I

s (3) Involve a significant reduction in a margin of safety. The ice condenser system is provided to absorb thermal energy release following a LOCA or HELB and to limit the peak pressure inside containment. The current ice condenser analysis for SQN is based on a minimum of 1,080 lbs of ice per. basket. TVA's calculation shows that for the bay analysis, using the predicted sublimation rate for 18-1/2 months, all bays woul'd have an average basket weight in excess of.1,080 lbs. - TVA's calculation shows that for the group-row analysis using the predicted sublimation rate for 18-1/2 months, all group-rows would have an average basket weight above 1.080 lbs with the exception of group 3 - row 1. The predicted average basket weight in this region was 1,026 lbs, which is 5 percent low. TVA evaluated the impact of the low weight in group 3 - row 1. TVA's evaluation addressed the potential for and the effects of a group 3 - row 1 melting out at a time earlier than the time assumed in SQN's FSAR containment analysis. TVA's evaluation shows that the conservatism contained in SQN's current containment analysis and the results of the preliminary containment pressure analysis for SQN (i.e.,

       " Westinghouse LOCA Mass and Energy Release Model for Containment Design -

March 1979 version," WCAP-10325-P-A, May 5, 1983) provide sufficient ice in all regions of the SQN Unit 1 ice bed to keep the peak containment pressure belev 12 psig, and to prevent premature burn-through of the ice bed. Based on TVA's evaluation and the improved surveillance history of the l SQN ice baskets, TVA considers the distribution of ice to be acceptable for satisfying the basic safety function of the ice condenser for the proposed one-time extension. The proposed change, therefore, does not involve a significant reduction in the margin of safety.

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                                                                                      -l ENCLOSURE 4                                                        l PROPOSED TECHNICAL SPECIFICATION CHANGE 89-24                                       ,

l BEST ESTIMATE EVALUATION OF ICE . _ 1 CONDENSER BASKET WEIGHTS l FOR SEQUOYAH LWIT 1 CYCLE 4 CALCULATION SQN SQ52-0082 , l l (B87 890607 001) u l i i i i i  ; l l

                                                   -_-----m...---__-       m.- --mmd

[ . i 1 TVA 10697 (DNE-0A-6;86) was7 i e O

                             .                                                              DNE CALCULATIONS l Title   BEST ESTIMATE EVALUATION OF ICE CONDENSER BASKET WEIGHTS FOR                          l Plant / Unit l_        SFOUOYAH UNIT 1. CYCLE 4                                   -

I SEOUOYAH UNIT 1 lPr2paringOrganization l KEY NOUNS (Consult RIMS Descriptors List) ~ l 5052 l 1CE CONDENSER. TECH SPEC WEIGHT I l Branch / Project Identifiers lEach time these calculations are issued, preparers must ensure that the l l original (RO) RIMS accession nuncer is filled in. l SQN SQS2-0080 l Rey (for RIMS' use) rims accession number R0 87 M h W:' O B25 890421 814 g lApplicableDesignDocument(s) l l l l lR1 lN866F/)/)C / l 887 890522 009 I "'^ l I I i l u . . . .. . . . .. . ... 1 B87 890607 001 l5ARSection(s) l UNIO System (s) l l N M Uiil M j$ U N U d L I l-l 6.2.5 l 61 lR l l l Revision 0 l RI l R2 i R3 15afety-related? Yes (X) No ( ) lECNNo.(orIndicateNotApplicable)l l l l Statement of Problem j t'/A l N/A l W/A l l lPrtpared - l1,L n Jv-- l l Determine an estimate of the ice condenser l h rkms.3 l ha. 4 l} M l l llcebasketweightsatvarioustimeperiods lCh:cked l l l jfor unit 1, cycle 4. j um.v e a. m. JusTsef Iw o wseulMa* l l lR3 viewed l mrat e mrme l l/ l l t Mmula - l l Approved l l O If l - l 3. 5. weteea sea um we lK A. oram. l Ah_-o l l lDate l l l l l 4 /x., /s1 I sht/sg I 4 5-B9 l l lUSE FORM ] List' all pages added l l l l lTVA10534lbythisrevision ll. A 13. b l l llFHORE lListallpagesdeleted l l l l l5 PACE lbythisrevision l N/A lW -8 8 I l l REQUIRED lListallpageschanged l f, t , . f, l'

  • E e l l l lby this revision las, a / 14-97 l l l ABSTRACT These calculations contain an unverified assunption(s) that must be verified later.

Yes ( ) No (X) l lA best estinute analysis predicting the amount of ice remaining in the ice condenser has been performed based on lobservedsublimationratesdeterminedfromhistoricalplantdata. The information contained herein is to support l4 possible relaxation of the time requirements for ice weighing surveillance and to provide input to a licensing lsubmittalrequestingthechange. l lTh2 predicted weights are determined using an extrapolation process based on an average ice sublimation rate found lfor each individual bay and each group-row region. The sublimation rates are based on evaluations of data taken lthroughouttheoperationallifeoftheplant. j l 1 l Based on the numerical analysis, it is predicted that an overall average of more than 1237 pounds of ice wit) e lineachbasket18.5 months (562 days)followingthelatesticeweighingsurveillance(Aug/ Sept 1988). lsultinmorethan 2,405,000 pounds of ice in the condenser. The results also indicate that all areas c'.-Th'. will re-1 the conden-{ lssr will exhibit more than the minimum value assumed in the safety analysis with the exception of one group-row lrglon. This region (grp3-rowl) is predicted to contain an average basket weight of about 1026 pounds, approxi. { lmately5percentlessthanthe1080analyticallimit. ] j l l l0v:rall, it is felt that the ice condenser will not be adversely be affected by the 5 percent underweight of one {

                              'l area and will remain capable of performing its intended safety function.

l ( l Total number of pages (RO) . 81. R1 = 82. R 1 S D {

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                   .                            -10E2ll DEST ESTIMATE EVALUATION OF ICE CONDENSER BASKET                                                                                              REVISION LO(!                                ;

nuo WEIGHTS FOR SEQUOYAH, UNIT 1, CYCLE 4 _

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DESCRIPTION OF REVISION App ve l 0 Initial Issue 4/21/1 1 Revision to correct equations entered into document 5/22/f incorrectly on pages 15 and 17. This change is typographical only and does not impact any, computations. t A correction incorrectly is also 17. on'page made to a date entered I 2 Revision 2 incorporates a change in the method for determining the at power sublimation rates. The , change is with respect to the number of at power { days between~the initial and final ice weighings. This parameter is used in the denominator of the , sublimation rate determination. Review of past j analyses have shown that incorporating the total number of days b~etween ice weighings, opposed to j only modes 1, the number of days when the plant experienced 2, ' or 3~ (revisions 0 and 1) , provides

                                                                         , adequate predictions of sublimation rates.

This revision also incorporates nonpower sublimation rates for the time periods that the current cycle has skperienced shutdown conditions or is expected to be in shutdown conditions. The computations take. credit,for a shutdown period of-8 days in September.1989 for ice condenser flow blockage inspection. To justify credit for these o . ., , periods, nonpower sublimation rates are determined using the same methodology as the,at power sublimation determination. The historical data. ~

                                                                        .u. sed,.tp potermine the nonpower sublimation rates
                                                                       .is taken from the 1985-1988 time frame and is
                                      ,               ,,                depicted in Table,5.                                               1
                                                                      'The unverified assumption documented in sections 3.0 and 4.0 has.been. removed per.,the.. references                                                                                                                      ....

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NEP-3.1 { Attachment 6 { Page 1 of 1  ! I CALCULATION DESIGN VERIFICATION (INDEPENDENT REVIEW) FORM j 1 1 SON SOS 2-0080 Calculation No. Revision I i Method used): method of' design verification (independent review) used ( ch e ck' -E. ,*f . '

1. Design Review X 2.

3. Alternate Calculation - . - Qualification Test Justification (explain below): Method 1: In the design review method, justify the technical adequacy of the' calculation and explain how the j adequacy was verified

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another, based on accep(calculation ted handbook methods, is similar to f app'ropriate sensitivity studies included for r confidence, etc;) . ..: Method 2:nIn the alternate calculation method,. identify the pages where

                               -ths       the alternate calculation       package        calculation and     explain  has been why       included this      method     in is                  :

adequate.. .. Method 3: In the qualification test method, identify the QA ' documented source (s) where testing adequately

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Justification: _ This calculation was  : ,.. cerformed to succort i i a nossible relaxation of.. technical specification weichinc requirements for unit

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1- The calculation utilizes clant , surveillance. data and simple statistical technicues. . Recetitive mathematical _ooerations were Derformed usina alcorithlms (LOTUS 1-2-3) procrammed into a comouter. l This errors. method minimizes the Dotentia-1-for' computational This calculation is or the same methodoloov as the orevious-ice and 2.3). sublimation calculations (rererences 2.2 Attachment 10 or NEP 3.1 is not aoolicable as most analVsis. or the cuestions do not relate to this tvoe or - 19f &f V. 2/- 89 Design peritier Date

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Page 1 of 1 CALCUI.ATION, DESIGN VERIFICATION (INDEPENDENT REVIEV) FORM

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Calculation No. Revision Method of design verification (independent review) used (check method' used): *

2. Desitn Review ,

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3. Qualification Test Justification (explain bel;w): '~~

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t Skaef_ ?6 or - U NEP-3.1 Attachment 6" i Page 1 of I CALCULATION DESIGN VERIFICATION (INDEPENDENT REVIEW) FORM _ ..$QA) .s'dh 3 2. - O t38 0  ?- Calculation No. Revision Method of design verification (independent review) . used (check method usad):

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3. Qualification Test Justification (explain below):

Method 1: In the design review method, justify the technical adequacy of the calculation and explain how the adequacy was verified (calculation is similar to another, based on accepted handbook methods, appropriate sensitivity studies included for confidence, etc.). Mothod 2: In the alternate calculation method, identify the pages where the alternato calculation hos been included in the calculation packagas and orplain why thic methcd is adoquate. Mothod 3: In the qualification test method, identify the QA documented calculationwhero sourco(s) testing adequately demonstrates the adequacy of this and explain. . E~t/ /sosJ 5 __ Of M [,4e.e st. 4nd m ~ ~,- WAs hafoa m en 7-o a c.~n c - r .- .. , aa

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   .                                                                                                                                                            Pagi1 cf 2 CALCULATION CLASSIFICATION & CATEGORIZATION
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CALCULATION INFORMATION: , PLANTAJNIT .5o~A / v~e7 1 IDENTIFIER f G Af 50 u - oo 9O RIMS NO. ISSUE DATE TITLE 6acT e s 71m r re cr'h L t

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                                                                                                                                                      -            8 A CLU;T we. I 6-u r s         con  se coeysa       o no r i          c~leie 4 REVISION LEVEL                                          2 AFFECTED SYSTEM (S) l PLANT FEATURE                                                                                                                                                             i SYSTEM /CCMPONENT DECRIPTION                    1 (X) SAFETY SYSTEM                                                                        .

SYSTEM NO. 6I J i rev cencertsca i ( ) PLANT ENVIRONMENT (EQ, ETC.) ( ) NON. SAFETY SYSTEM SYSTEM NO, . ( ) APPENDIX R 1 l ( ) CIVIL STRUCTURES " ( ) INSTRUMENTATION (1.97, PAM, ETC.) (X) LICENSING rec a. sage 3 /u G. r ( ) OTHER

  • CALCULATION CATECORY to. o 1 Fib.AL CLASSIFICATION

( ESSENTIAL ( ) FILE ONLY ( ) DESIRABLE ( ) SUPERCEDED SUDMITTED Nw NM DATE 4 / 3 / A9 REVIEWED M # DAYE d 89 APPROVED A /1

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         .,                                                                               TENNESSEE. VALLEY AUTHORITY                                                                                                                    {

SQNSQS2-0080 Rev. 2 . SHEET 4 OF 17 BEST ESTIMATE EVALUATION OF ICE ' PREPARED /DATE l-T t/r/r o CONDENSER BASKET WEIGHTS FOR CHECKED /DATE'u m u,./w SEQUOYAH, UNIT 1,. CYCLE 4 SEQUOYAH -r(- UNIT 1 TABLE OF CONTENTS " l I. CALCULATION COVER SHEET 1 II. REVISION LOG

  • 2 III. INDEPENDENT REVIEW FORM .-- - . .

3 IV. CALCULATION, CLASSIFICATION SHEET , 4

                                                                                                                                                                                                              . . ~ . . . .

1.0 INTRODUCTION

/ PURPOSE -                                                                                                                                                      7..                  . . . . . .

2.G REFERENCES ' 9 . 3.O ASSUMPTIONS

                                                                                                                                                                                                   ' 11;.,b....  . . . . .

4.0 DOCUMENTATION OF ASSUMPTIONS _ 12

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5.0 DESIGN INPUT. . . _ . 13 6.O METHODOLOGY . . . . . . . . . . , .

                                                       ,                                                                                                                                             14' 7.0     COMPUTATIONS / ANALYSIS
                                                                                                                                                                                                           ~ " ~ '

18 8.0 RESULTS

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88 9.O ~ ~~ i CONCLUSIONS / RECOMMENDATIONS 9'E ~~ ~~~~ ATTACHMENT A EXCERPT FROM ICE VERSION SQ1.0 95 9 -

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TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET 7 OF 97 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATEi.T U3 /p t - __ CONDENSER BASKET WEIGHTS FOR CHECKED /DATE a,s64 /s-/A SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH /- ___________________________________________________________ ______ UNIT 1

1.0 INTRODUCTION

/ PURPOSE The intention of this calculation is to predict the weight of__

the ice condenser ice baskets at various time periods for the current unit 1 fuel cycle (cycle 4). This.is' performed to support aofpossible weighing relaxation surveillance of the time requirement requirements.for ice, 4.6.5.1 j [2.1]. j Due to the containment design of'Sequoyah, the ice condenser system is relied upon to mitigate the consequences of a loss of coolant accident (LOCA). The requirements of each component of the ice condenser ensures that the overall system will be able to provide sufficient pressure suppression capability to limit { the containment. peak pressure transient during LOCA conditions. The amount of ice in the condenser is required to contain sufficient heat removal capability to condense the reactor'  ; coolant system volume released during a LOCA.- However, the  ! mass of ice continually diminishes throughout the life of the-plant.' This is primarily'a result of sublimation, i.e. transfer of ice. mass Ice sublimation occurs when conditions of low pressure and high heat transfer exist'in the system and is, in general, a relatively slow process. However, over extended  ; periods of time, a large amount of ice can be removed from the ice bed. So much so, that the ice condenser system can be i

                                                                                .properly rendered       inoperable per the technical specifications if not maintained.

In order to ensure operability of the ice condenser, technical specification that at least 144 surveillance requirement 4.6.5.1.b.2 requires twelve months. ice baskets be weighed at least once per This sample includes one basket from six rows (radial rows 1, 2, 4, 6, B, bays. and 9) of each of the twenty-four If any basket is found to contain less than 1200 pounds of ica, an additional.20 baskets must be weighed. The- rows are then subdivided into three groups (Group 1 - bays 1 through 8, Group 2 - bays 9 through 16, Group 3 - bays 17 through 24). The minimum average weight of the sample baskets in the radial rows of'each group must not be less than 1200 pounds per basket at a 95 % level of confidence. In addition, these basket weights is not less shall thanbe used to determine 2,333,100 pounds. that'the overall ice weight The rate of sublimation is dependent on several factors, the most contributing being increased heat loss to the environment. Because containment temperatures increase during power production, sublimation is most prevalent at this time. Therefore, this analysis determines sublimation rates based on historical the plant. ice weight data taken over the operational life of The estimated sublimation rates will be applied to the most recent ice weighing data (September 1988) and, per an

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SQNSQS2-0080. Rev. 2 . SHEET t OF ' 9 'l i j BEST-ESTIMATE EVALUATION OF ICE- PREPARED /DATE l-7 us/4 9 - -{ CONDENSER BASKET WEIGHTS.FOR CHECKED /DATE m#if.s-/pS  ! SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 'l ________________________________________________________/- UNIT 1 extrapolation process, predict futuristic weights in the ice-condenser. "

                                                                                                                                                                                                 ]

It'is not the intention of this calculation to' predict' ice weights based on bounding conditions and/or extreme. conservatism, but to make a realistic assessment of the ' historical data at.Secuoyah and.to draw conclusions based on , previous analysis methodology and engineering. judgment. . l h*

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TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 , SHEET 9 OF 97 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE J 7 (/a/s, - CONDENSER BASKET WEIGHTS FOR CHECKED /DATE Wra(/ 4/r/#5 SEQUOYAH, UNIT 1, CYCLE 4 SE _________________________________________________QUOYAH J- UNIT 1 ________________ j

2.0 REFERENCES

i 1 2.1 "Sequoyah Nuclear Plant Technical Specifications", Revision 77. 109, 03/09/89, Attachment A to License No. DPR, ' 2.2 Reference removed per Revision 2 1 i 2.3 Reference removed per Revision 2 l 1 2.4 "TVA Nuclear Performance Plan (Sequoyah)", Volume II Revision 4, December 1988. 2.5 " Design Criteria For Ice Condenser System", SQ-DC-V-27.1 j Revision 1, 07/22/87, Rims # B45 870722 258. .  ! 2.6 TVA, ICE Version SQ1.0, A Supplement to SI-106, June 30, 1987, Rims # L36 870630 808. 2.7 SI 106 Data Package, Performed by M. R. Robinson, Unit , 1, 1/30/82. l I 2.8 SI 106 Data Package, Performed by J. P. Campbell, Unit 1, 1/24/82. 2.9 SI 106 Data Package, Performed by J. P. Campbell., Unit 1, 9/13/82. 2.10 SI 106 Data Package, Performed by W. D. Wright, Unit 1, 12/2/82. 2.11 SI 106 Data Package, Performed by J. D. Elsea, Unit 1, 3/6/84. 2.12 SI 106 Data Package, Performed by J. D. Elsea, Unit 1, 3/30/84. 2.13 SI 106 Data Package, Performed by J. D. Elsea, Unit 1, 4/22/85. 2.14 SI 106 Data Package, Performed by M. R. Robinson, Unit 1, 8/11/88. 2.15 Reference removed per Revision 2 2.16 SI 106 Data Package, Performed by J. D. Elsea, Unit 1, 8/28/85 2.17 SI 106 Data Package, Performed by J. D. Elsea, Unit 1, 6/16/88 l

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 .                                                                                TENNESSEE VALLEY AUTHORITY SQNSQS2-0080     Rev. 2 .                         SHEET 10                               OF       97 BEST ESTIMATE EVALUATION OF ICE                                           PREPARED /DATE LT / / < / at CONDENSER BASF"T WEIGHTS FOR                                               CHECKED /DATE i>sf //.r&r SEQUOYAH, UNIl 1, CYCLE 4                                                                          SE                         v6 UNIT        i
                                 ------------------~~-----------------------------QUOYAH                                                             ----------------

2.18 " Tennessee Valley Authority, Division of Nuclear Power, Monthly Operating Report, Sequoyah Nuclear Plant" " (packages as listed below) Date RIMS /MEDS'# October 1981 L53 811117 985 November 1981 , L53 811215 913 December 1981 L53 820115 877 ~ January 1982 L53 820219 908 February 1982 L53 820310 814 March 1982 L53 820409 806 April 1982 L53 820514 865 May 1982 L53 820611 861 June 1982 L53 820716 930 July 1982 L53 820816 907 August 1982 L53 820915 910 September 1982 L53 821015 891 January 1983 L53 830216 970 - February 1983 L53 830316 885 March 1983 L53 830415 828 April 1983 L53 830519 808 May 1983 L53 830617 940 June 1983 L53 830719 878 July 1983 L53 830818 850 August.1983-September 1983 .L5 3 830922 845 - - L53 831025 950 October 1983 L53 831129 998 November 1983 L53 831219 928 December 1983 L53 840124 873 March 1984 L53 840419 829 April 1984 L53 840521 972 May 1984 L53 840621 901 June 1984 L53 840727 875 July 1984 S53 840817 931 August 1984 SS3 840920 918-September 1984 S53 841024 852

                                                            ' ' October r1984    ' " ' ' ' "-

S53 841130 832 Movember 1984 S53 841226 936 January.1985 S53 850222 826 February 1985 SS3 850314 909 March 1985 S53 850412 831 April 1985 S33 850509 917 October 1988 S57 881129 810 November 1988 S57 890106 851 December 1988 S57 890207 850 January 1989 S57 890309 850 February 1989 S57 890328 850 2.19

                                                           " LOTUS 1-2-3 Reference Manual, Release 2.10",                                             LOTUS Development Corporation, 1986.

s. TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 'Rev. 2 . SHEET 11 OF 97' BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE l-T (h/s f - CONDENSER BASKET WEIGHTS FOR CHECKED /DATE'w,4 sh/S, SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH-J- UNI ______ ___________ ________________________________________ .T 1__ 3.0 ASSUMPTIONS 3.1 The' ' sublimation rates calculated from plant historical data is' applicable to the current ice condenser. weights and configuration. 3.2 The sublimation rates will be determined from plant ice. weighing time differential of approximately six months or more. w d44 & , - p

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               ..                                                                                                                                       TENNESSEE, VALLEY AUTHORITY SQNSQS2-0080 'R e v . 2   ,

SHEET 11 OF 97 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATEk7 #3/u - _ CONDENSER BASKET WEIGHTS FOR CHECKED /DATE % d e./r/s, SEQUOYAH, _ UNIT 1, CYCLE 4

                                                                                                  -------------------------------------------------QUOYAH                            SE         -4 UNIT 1
                                                                                                                                                                                        ----------------    p 4.0                                 DOCUMENTATION OF ASSUMPTIONS 4.1                                 Assumption 3.1 The ice condenser data used to determine the at power sublimation rate was taken during the period when the               ,

plant was actively producing power. The amount of ice lost is based'on. differences in weighings prior to and following plant power operations. SQNP Unit 1 began  ! commercial operation on July 1, 1981 and produced power until it was shut down on August 22, 198S because of [ i equipment 5 qualification concerns [2.4]. Ice condenser weight' data during this period can be used to determine ice loss during power operation because temperatures of the heat. sources providing the driving {4 force for sublimation are greater than during idle plant periods. It has been demonstrated that sublimation during idle plant conditions generally produces. lower sublimation rates than when the plant is at power. However, it should be noted that improper maintenance operations on the ice condenser can increase sublimation rates above that expected for an idle or power producing plant. The functional requirements of the glycol cooling. system l and ice condenser air handling units have'not changed appreciably from the original design (see reference 2.5). Therefore, the assumption that the sublimation rates during previous power operation are applicable to current power operation is valid. Plant of historical data the nonpower is alsorate. sublimation used for the determination- i' A representative rate can be found utilizing the same methodology as the power ' sublimation rate for the time period when the plant was in shutdown conditions (August 1985 through November 1988). 4.2 Assumption 3.2 Sublimation of ice in the ice condenser is a slowly occurring process. However, the performance of maintenance operations such as defrosting (i.e. the melting of ice) results in rapid losses of ice. Also, ingress and egress result'in inc eased sublimation by'the introduction of dry air into the ice condenser.  ! Therefore, a statistical evaluation based on a longer sampling period will be minimized. Furthermore , ice is  : generally added during maintenance periods which i ( invalidates sublimation calculations for these periods.

    ~ *j .
 .-                                                                         TENNESSEE VALLEY AUTHORITY SQNSQS2-0080      Rev. 2     .              SHEET #3 -   OF'97 BEST ESTIMATE EVALUATION OF ICE                      PREPARED /DATE LT th/se CONDENSER BASKET WEIGHTS FOR                          CHECKED /DATE 1,.// th-/st SEQUOYAH, UNIT 1, . CYCLE 4                                 SEQUOYAH. 4 UNIT 1
                                                 --------------------------------------------------------7               --------.

j 5.0 DESIGN INPUT:

                                                'A11' design input data is'taken from-the; ice weight surveillance.

data (SI-106) as listed in references 2.7 through'2.17'and the-monthly' operating ~ reports noted in reference 2.18. Table 1:- Design Input' Sources (SI-106) Reference'# Sign-o{f Date Weighing. Comment

                                                                      . Date             completed-2.7           01/30/82            09/19/81      ' Package revises data for 9/19/82, uno ice addition.

2.8 01/24/82 surveillance [only, 01/25/82 no ice addition

                                                      -2.9            09/13/82            09/14/82        initial weighing prior to-ice                 i addition -

2.10 12/02/Q2, 12/15/82' following ice

                                                                              ~

addition '

                                                                                                                                       )

2.11 03/06/84 03/04/84 . data computed for December 1983 2.12 03/30/84 03/30/84 following ice'  !

                                                                                ,                        addition.                     I i
                                                     . 2 .13 ,       04/22/85       .

04/20/85 initial weighing. prior'to ice

                                                                                           ,            , addition 2.1'4         09/16/88            09/16/88        following ice                  !

addition J 2.16 08/28/85 '09/05/85 begin extended i' outage.  ; s l 2.17 06/15/88. 06/24/88 fcilowin,g extended ottage J

  • i First date listed on cover sheet of SI-106' data package

t ij i

   ,                            TENNESSEE VALLEY AUTHORITY                                                               '

i SQNSQS2-0080 Rev. 2 . SHEET 1 /4 OF 17 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE L7 (h/ r f - CONDENSER BASKET WEIGHTS FOR CHECKED /DATE hJm8 4/rA>9 l SEQUOYAH, UNIT 1, CYCLE 4 '

           --------------------------------------------------------[-

SEQUOYAH UNIT 1 6.0 METHODOLOGY  ! The methodology used in the prediction of current ice weights is based on a simple linear extrapolation pro. cess in which a rate of sublimation is applied to the amount of ice that was i last observed in the condenser. Since best estimate predictions are desired, the. rate of sublimation must be j determined in a fashion that approximates actual ice loss in the condenser. {

                                                                                                                        ]

I It has been demonstrated that while the plant is in shutdown conditions, sublimation rates tend to be much smaller than those at power. This is due to the.relatively small heat loads found in containment which invoke little driving force for mass lj loss. ' For this reason, it is appropriate to use data that reflects the ice loss in containment while the plant is'at } power as well as when the plant is in shutdown conditions.- As { stated in section 4.1, only performances of SI-106 that were taken between July 1, 1981 and August 22, 1985 have been

  • j considered for at power sublimation rate determination.' j 4

Historical records show that this is the only period that unit-1 has operated at power. During this time frame, seven ice surveillance occurred that are of interest (determined per assumptions 3.1 and 3.2). These packages provide the bases of four distinct periods by which the at power sublimation rate 3 can 2. be determined. - The dates of these are displayed in Table 1 The nonpower sublimation rate will be found utilizing data at which time the plant has been in shutdown conditions. The data used for this determination is taken from performances of SI-  ; 106 between March 1985 and June 1988. packages are also displayed in Table 2. The dates of these 1 By considering the amount of ice found at these times and'the length of time occurring between the dates, a~ rate of sublimation can readily be found. Containment temperatures and i heat sinks are expected to be relatively constant throughout times of either power operation or nonpower operation. The equation for determination of sublimation for each specific time frame is given by: Sub. Rate = (W1 - W2)'* l'00 / (W1 * #'of" days) "* where, W1 and W2 are the initial and final, ice weights at a 95 percent level of. confidence l

                *e
z. .

TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 SHEET sr OF 97 BEST ESTIMATE EVALUATION OF ICE . PREPARED /DATE LT (/3/ n CONDENSER BASKET WEIGHTS FOR CHECKED /DATE 'ad/r/g 5 SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 4- UNIT 1 Further details of the 95 percent level of confidence determination are located in Attachment A. ,, Once the sublimation rate has been determined for each of the four time intervals, an at power sublimation rate will be determined by finding the arithmetic mean of the values. The - mean value will satisfactorily depict the rate occurring during the current fuel cycle.

                                                                                                                                               )

Note that the units of sublimation are given in percent / day and that the magnitude is a function of  ! the init'al i wej ght for that specific time frame. When this va'se is applied to the current ice observation, the result will be skewed due to the I difference in initial weight values. Because sublimation will increase or decrease with changes  ; in ice volume, this methodology will adequately j portray actual mass loss. - J The nonpower sublimation rate is determined in the same manner as the at power rate with the exception that only one. set of i data.is available for analysis. For this reason, an average , value is not implemented. r - - To compute the predicted weights, the sublimation rates are then extrapolated to the latest ice weights as observed at the beginning of the current fuel cycle [2.14]. The nonpower and power sublimation rates are applied corresponding to'the , appropriate plant mode changes that have occurred to date or (9 s are expected to occur.for cycle 4 of unit.1 operation. Mode cQ'As.anges are<provided in.the documentation provided in reference 2. The 8 day outage scheduled for September 1989 has also Wh&gq been-incorporatedeinte'the calculation of the nonpower-e d' sublimation period. The total number of days applied to the nonpower sublimation rate.is 72.5 days. The predicted ice weight is e given by., , Begin. Pwr _ Initial Initial Nonpower Weight Weight

                                                                          ,
  • Time

( Weight Sub. Rate > 1 100 (lbs) (lbs) (lbs) (% / day) (day) (%) 5 , Predicted ,Begin. Pwr Begin. Pwr

  • At power Time Weight 100 Weight Weight Sub. .a i e .

(lbs) (lbs) (lbs) (% / ay) (day) (%) i l

                                                                                                                          .__________-----__,J

4 TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET 16 OF 47 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE JJ Ua/et-CONDENSER BASKET WEIGHTS FOR CHECKED /DATE Ad 4/.c/g9 SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH -/- UNIT

       ----------------------------------------------------------------1 Technical specific 1 tion bases require that not only sufficient LOCA heat removtl caoacity be provided, but also that the ice                i be evenly distribute 2 throughout the containment. To evaluate the distribution or ice, the analysis is perfprmed for two                   ;

1 different cases. The first case predicts the weights of the { fuel cycle for each individual bay in the condenser while the , i second predicts the weights for each group-row combination. This will provide sufficient detail to assess the effect of the developed sublimation rates. ' l e 4 4 b

                                       .      n       ,

5 & e

i: TENNESSEE VALLEY AUTHORITY. SQNSQS2-0080 Rev. 2' . - SHEET 87 'OF 97 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE 4 7 u_s/st CONDENSER BASKET WEIGHTS FOR SEQUOYAH, UNIT 1, CYCLE 4 CHECKED /DATE kd/ Df/g, ' SEQUOYAIL

                                  -------------------------------------------------------                          /- UNIT 1 4

4 9 Table 2: Time Intervals of Sublimation Rate Determination Beginning Ending Number of Date Date. Days 09/19/81 1/25/82 126 - 01/25/82 9/13/82 231 l j 1 12/16/82 12/31/8/ 3 . g4 6.,3 350 ) 03/30/84 04/22/85 380 i 09/07/85- 06/15/88 1041 1 l l i 4

                                                     ~

i l i

     's TENNESSEE VALLEY AUTHORITY SQNSQS2-0080     Rev. 2        ,                   SHEET 18                      OF 97 BEST ESTIMATE EVALUATION OF ICE                        PREPARED /DATE kT (/3/s t-                                  ,

CONDENSER BASKET WEIGHTS FOR CHECKED /DATE LAN/m  ! SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH { ________________________________________________________/- _________ UNIT 1 l 7.O COMPUTATIONS / ANALYSIS As stated in section 6.0, the sublimation rate is given by the equation,  ; i Sub. Rate = (W1 - W2)

  • 100 / (W1
  • number of days) , j where, W1 and W2 are the, initial and final ice weights j at a 95 percent level of confidence * '

and the predicted weights are given by the equation, W begin * 'Winit - Winit

  • n npwr rate * (# of days)4_-100 W pred "p I rbegin pwr - Wbegin pwr
  • at pwr rate * (W of days) 100 where, W initial is the weight as of the Aug/ Sept ice survellIance l 1

Due to the detail of analysis required, many small calculations { of the same type must be performed. Subsequently, an algorithm was developed using the LOTUS 1-2-3 spreadsheet for ' computational expediency and error reduction. The following description further details the calculational procedure. , To obtain the ice weights at a 95 % level of confidence, the spreadsheet was set up in accordance with reference 2.6 (statistical methodology provided in Attachment A). The _ equations used within the algorithm are as follows: average weight = OAVG(B 1 ..B g )

               # of baskets            = 0 COUNT (B y ..Bg )
              -standard deviation      =

OSQRT ( 0 COUNTy (B . N. B )/ ( 0 COUNTy (B . y. B _1) )

  • 0STD(B l . .g B).

z-score = OINDEX(Cy..Cp,0,0 COUNT (B y..B N-2)) 95% confidence level = AVG WT. - (Z-SCORE

  • STD. DEV.) {

SQRT(# OF BASKETS) where, B1..Bg = range defining ice data k C = range defining Zscore table  ! 9b..C%g conf. = all inputs are cell addresses I Individual data points were obtained from the data sheets included in references 2.7 through 2.17 and were entered into 1 the spreadsheet. Not all data points contained in the ice l

     .                                                                              I t                                                                             i i
   .                              TENNESSEE VALLEY AUTHORITY                         '

SQNSQS2-0080 Rev. 2 . SHEET 49 OF 47 j BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE LT t/3/c - i CONDENSER BASKET WEIGHTS FOR CHECKED /DATE h82/r/BS SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH - UNIT 1 i _________________________________________________________f ________ weighings were included in the group-row analysis. These points are not applicable to the rows of interest, i.e. data j taken from rows 3, 5, or 7 has been omitted. 1 The sublimation rates were also determined by' LOTUS 1-2-3. The l spreadsheet equations used were derived using cell addresses an i in the 95 percent confidence calculation. ' i sublimation rate = (W1 - W2)

  • 100/(W1 * # of days) f "Wi" is defined as being the 95 percent confidence weight of ,

the initial tin.e frame, and W2 is the 95 percent confidence f weight of the final time frame. These values also correspond I to the appropriate bay or group-row range of the time interval. once computed, the sublimation rates were averaged on an t individual bay and group-row bases. Note that some time frames l experience an increase in ice weight and thus show a negative sublimation rate. This phenomenon.can occur due to mass e movement of ice in which ice sublimates into the air at one region of the condenser and then is transferred back into  ; baskets of another region. However, mass movement by this mode  ! is an extremely slow process and should not account for the  ! entire negative sublimation rates computed. Also contributing to the negative rates is an anomaly of the statistical methodology employed in the 95 percent confidence computation. Small sample statistics allow the 95 percent confidence value to vary largely as a function of standard deviation. The random selection of baskets and the small number of samples taken can project the sample region as having a weight increase. In order to appropriately model the true sublimation, all negative sublimation rates were set to zero prior to averaging. This will offset the appearance of ice mass increases. After averaging _, the sublimation rates were applied to the ice weight data taken during Aug./ Sept. 1988, the most recent ice su rveillance . The 95 percent confidence weights were determined for this data exactly as in the previous cases. Table 3 contains the LOTUS 1-2-3 output of the at power sublimation rates for the individual bay analysis while Table 4 contains the output of the at power sublimation rates for the group-row analysis. The results of the computations of the nonpower sublimation rates for both the. bay and group-row analysis are contained in Table 5. These tables contain the salient input data for all the time frames of interest. This information is also summarized in Tables 6 and 8 for both the bay and grouo-row computations respectively.

                                                                                    )

4

s TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET to O F. 47 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE J.7 t/s/s t CONDENSER BASKET WEIGHTS FOR CHECKED /DATE bd ur/g, SEQUOYAH, UNIT 1, CYCLE 4 SE _ _ _ _ _ _ _ _ _ QU O Y AH -/- U N Also computed for the group-row analysis is the maximum time that all group-row regions, with ?.he exception of group 3-roil 1, will exhibit at least 1080 rc . ads of ice and the weights of the remaining regions of ice existing at this, time. Group 3-row 1 has been excluded from this sensitivity because the low initial weight and the relatively high sublimation rates . computed will ultimately be below 1080 pounds for any surveillance requirement extension. These values are computed using the same equations noted previously with simple algebraic manipulations. The results of the predicted weights are provided respectively. in Table 7 and 9 for the bay and group-row analyses It should be notet that the algorithm used in LOTUS 1-2-3 is not intended as a developed, problem solving program but a computational tool used to perform many small computations that have already been defined. Consequently, quality assured documentation of the algorithm is not warranted. m e l l l 3 e

i TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2- . SHEET 2. I OF _ 'I'7 BEST ESTIMATE EVALUATION OF- ICE PREPARED /DATE1.r us/a1- ' CONDENSER BASKET WEIGHTS FOR- CHECKED /DATE ik# t.N/p9 SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 4- UN ____ ________________ ______________________ ____________ __ _IT 1 ___ Table 3: Evaluation'of Historical At Power Sublimation Rates. Based on Individual Bay Comparisons' " 9/19/81 1/25/82 .1/25/82 9/13/82 12/16/82 12/31/832 3/30/84 4/22/85 8/31/88 BAY 1 BAY i BAY 1 2 sc0RE ' BAY 1 BAY 1 BAY 1 BAY 1 BAsrEY WElcHi -BAY 1 BAY 1 . 1220 1179 1179 1068 '1243 815 1489- 1355 1440 1352 1119 6.314 1119 1097 . 1340 1004 1012 1010 1240- 2.92 1340 1131 1131 1034 1278 1163 1294 -1405 1487 1296 1104 1104 2.353-994 1399 1196 1330 1384 1533 2.132' 1284 1259 1259- 1191 1260 1149 1111 1117 1239 1275

                                                                                                                                                                           '1552           2.015L 1275          1249            1441          1007                      1150                            1021          -1299 1376          1267           1267                                                                                                                               1.943 1147                          1183                      1190                            1132                         1.895 1356          1255           1255          1270                          1188                     1191                            1144 -

1356 1261 1261 1.86 1271 1204 1303 1171 -1.833 1360 1331 1331 1292 1147 1177 1148 1380 1287 1287 1.812 1407 1251 1145 1019 1.796 1420 1279 1279 1258 1280 1284 1178 1388 1355 1355 1.782 1308~ 1220 1285 1159 1.771-' 1432 1355 1355 1335 1306 1226 '1249 1448 1351 1.761' 1351 1431 1297 1309 1254 1.753 1325 1347 1347 1365 1412 1307 1448 1193 1. 74 6 1415 1415 1457 1351- 1417 1286-1400 1427 1.74 1427 1266 1463- 1380 1289 1.734~ 1500 1443 1443 1428 1383 1332 1349 1436 1443 1443

                                                                                                                                                                                         .1.729 1493                          1266                    1461 1255                                                                                                                              .1389                          1.725.'

1504 - 1504 1423 1197 1522 1329 1.721; 1295 1435 1435 1283 1185 '1392 1383 1441 1.717-1311 1311 1433 1356 1360 1378 1456 1439 1439 1.714= 1450 1395 1399 1444 1382 1.711. 1455 1455 1509 1408 1464' 1337 1476 1487 1487 1.708 1625 1461 1389 1.706 1.703

                     .                                                                                                                                                                    1.701-1.699 1.645 1 645' 1.645 AVG VticH1           i'71.73        1327.46                                                                                                                                                1.645 1327.46       1310.92       1326.83        1241.81 STD. CEv.                                                                                                     1304.58                                    1244.76 '1425.17 74.9536        113,6085      113.6085       157.0042 1.645' 80.3677       150.2630 8 OF BASKETS                26            26              26 126.4133 130.3816 128.0335                                                    1.645 26              6             26                          26 2 SCORE.                1.708                                                                                                                                   25               6-        1.645 1.708          1.708         1.708           2.015         1.708           1.708                                     1.711 95% CONr. WT.       1346.62         1289.41       1289.41 2.015-              1.645 1258.33       1260.72        1191.47         1262.23                                    1200.14     1319.84               1.645 SUB. %/ DAY         0.'03372                                                                                                                                                             '1.645 0.01043                      0.01569                        0.01294                                                                      1.645 9
                                                                                                       ,        . _ _ _ _ _ _ _ _ _ . - _ . - - - - - -                " ~~
                                                                                                                                                                    -l;
                                                                                                                                                                      ]

TENNESSEE' VALLEY-AUTHORITY

i SQNSQS2-0080 Rev. 2 . SHEET 2. 2- OF 47 BEST-ESTIMATE EVALUATION OF ICE PREPARED /DATEJ7 sh /et CONDENSER BASKET WEIGHTS FOR: CHECKED /DATE N us-/n SEQUOYAH, UNIT 1, CYCLE 4 .SEQUOYAH J- UNI i
                                 --------- .-- . --- --- . -- ---                                       ---------------------~~T                            -

Table 3: Evaluation of Historical At Power Sublimation Rates Based on Individual Bay Comparison's (continued) ' 1.64 9/19/81 1/25/82 1.642 1/25/82 9/13/82 12/16/82 '12/31/83 3/30/84 BAY 2 BAY 2 4/22/84 8/31/88 1.64 BAY 2 BAY 2 BAY 2 BAY 2 BAY Z BAY 2 BAY 2.. 1.64' BASKET WEIGHT 1440 1429 '1429 1309 1323 1214 1417 1238 1476 1.64i 1448 1469 1469 1352 1311 1341 1420 1457-1296 '1394' 1.64) 1380 1380 1418 1391 1397 1291 .1264 1446 :j 1231 1489 1489 1519 1219 1442 1328 '1038- .1514  ! 14C8 1269 1269 .1296 1463 1456 1384 1417- 1438 1436 1363 1363 1482 -1380. 1439 1438 999- 1314 1460 - 1173 1306-  !. 1341 1326- 1342 < 0 1456 1416 1307 1408 1303 1409-1468

                                                                                                           .1274                       1459 1480 1319'                     1456 1399                                                                                                             ' '

4 1335 1442  ! 1492

                                                                                                        . -1410.                      1414 1480 1263                      1314 1470 1393                      1239 1416                                                                                                                                  i 1385                      1349 l4' 1720                      1409 1468                                                                                                                                   '

1322 1408 1420 l 1360 1232- I 1202 1279 1389 1428 l 1o73 1378' 1464 1010 1359 1426 1212 1164 1472 1397 1377-1386 1348 1399 i 1339 '

                                                                .                m .
                                                                                                                                                          .         _ i_

l AVC VEICHT 1423.08 1399.83 1399.83 1396.00 1347.83 1307.96

       $10. DEv.           69.7578        80.5641 1379.67 1323.81         1430.33                  :

80.5641 92.2106 83.3461 115.6797

       # OF BASKETS             - 26             6                                                                    58.2638 - 115.5262 69.6324                       i 6             6'                  6             26 2+5CCRE                                                                                                               6          27              6 1.708         2.015        2.015         2.015               2.015         1.708          2.015      1.706 955 Co u . WT.      1399.71        1333.56                                                                                               2.015 1333.56       1320.15          1279.27          1269.21        1331.74    1285.89      1373.05                  i Su8. %/ DAY         0.03751                     0.00435-                       0.00225                         0.00906 i

i

                                                                                                                                                                 +
                                .w

t

   .                                                        TE!111ESSEE VALLEY AUTilORITY SQllSQS2-0080 Rev. 2                              .

SHEET 2.3 OF 47 DEST ESTI14 ATE EVALUATIOli OF ICE PREPARED /DATE L7 d h/ 5'1 CollDE!!SER BASKET WEIGHTS FOR CHECKED /DATE w4' 4 /r/BS SEQUOYAH, UllIT 1, CYCLE 4  ! SE

                       -------------------------------------------------QUOYAH                                            ----------------
                                                                                                                                                              -- U!IIT 1 l

Table 3: Evaluation of Historical At Power Sublimation Rates 1 Sased on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83~ 3/30/84 4/22/84 8/31/88 l BAY 3 BAY 3 BAY 3 BAY 3 BAY 3 BAY 3 BAY 3 BAY 3 BAY 3 - BASKET WEICHT 1419 1267 1267 1197 1406 1110 1443 1338- 1507.5 { 1377 1487 1487 1159 1559 1176 1337 1425 3 1538 1429 1490 1490 1396 1232 1375 1291 1420 1390 i 1354 1399 1399 1496 1268 1487 1437 1541 1561 i 14 75 1436 1436 1563 1293 1580 1431~ 1401 1301 1563 1485 1485 1313 1440 1043 1482 1334 1444 1457 1517 1330 l 1442 1430  ! 1529 1528 1376 1248 1407 1384  ! 1354 { 1365 1413 ~ .{ 1424 I 1420 1304 I 1445 1425 1275 1382 1250 j 1425 1 1378 1176 1456 1336 j 1468 1430 1 1443 1418 1339 1103 1402 1301 1457 1420 I 1501 1517 1515 1512 AVG WEICHT 1397.50 1427.33 1427.33 1401.96 1387.86 1354.96 510. CEv. 1403.50 1409.83 1500.58 58.0500 86.4839 86.4839 99.6327 126.9323 139.6929 73.04'72 75.5339 0 Of DASKEis 6 6 6 69.8916 26 7 26 6 Z SCCRE 2.015 6 6 2.015 2.015 1.708 1.943 1.708 2.015 2.015 9% CCNF. WT. 1349.01 1356.19 1356.19 2.015 1368.59 1294.64 1308.17 1343.41 1347.70 1443.09 508. %/0AY 0.00423 0.00396 0.00299 0.00084 i i _ _ _ _ _ _ _ . , . - - - - " - - - ^

t ., TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 SHEET 2. '+ OF 47 BEST ESTIMATE EVALUATION OF ICE . PREPARED /DATEJ.T U3/gs CONDENSER BASKET WEIGHTS FOR CHECKED /DATE ~ e.2+// e /_.-/w SEQUOYAH, UNIT 1, CYCLE 4 SE r4 UNIT 1

                    -------------------------------------------------QUOYAH                                  ----------------

Table 3: Evaluation of Historical At Power Sublimation Rates _ Based on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/11/83 3/30/84 4/22/84 8/31/88 BAY 4 BAY 4 BAY 4 BAY 4 BAY 4 BAY 4 BAY 4 BAY 4 BAY 4 - BA$ RET WEICHT 1518 1397 1397 1351 1372 1283 1551 1334 1527 1478 1435 1435 1336 1404 1403 1430, 1457 1464 14M 1431 1431 1438 1406 1493 1601 1484 1636 1496 1490 1490 1403 5478 1596 1465 1556 1265 1528 1543 1543 1488 1524 1328 1451 1469 1432 1523 1508 1508 1382 1485 1290 1359 1317 1483 1364 1373 1397 1463 1527 1353 1408 1453 1323 1378 1403 1503 1211 1243 1363 1483 1543 1273 1378 1476 1521 1551 AVG LEICHT 1501.17 1467.33 1467.33 1399.67 1428,75 1408.42 STD CEV. 26.1719 1476.17 1436.17 1467.83 55.1459 55.1459 56.5992 58.8139 103.5472 86.9492 92.5190 122.0253 0 0F EASKETS 6 6 6 6 8 26 6 2 SCORE 6 6 2.015 2.015 2.015 2.015 1.895 1.708 2.015 2.015 95% CCNF. WT. 1479.64 2.015 1421.97 1421.97 1353.11 1389.35 1373.74 1404.64 1360.06 1367.45 SUB. %/ CAY 0.03093 0.02096 0.00321 0.00833

               's                                                                                                                                                                       ;
         .,                                                       TEllllESSEE VALLEY AUTHORITY SQ?iSQS2-0080              Rev. 2          .

SHEET '2.f OF 17 l BEST ESTIMATE EVALUATIOli OF ICE PREPARED /DATE f.7 4/3/p e CO!!DEllSER BASKET WEIGHTS FOR CHECKED /DATE uw/ e /r/p; SEQUOYAH, U!IIT 1, CYCLE 4 SEQUOYAH /- UllIT 1 Table 3: Evaluation of Historical At Power Sublimation Rates ~~ Based on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 ) BAf 5 BAY 5 BAY 5 BAY 5 BAY 5 BAY 5 BAY 5 BAY 5 BAY 5 . I BAstET WEICHT 1472 1466 1466 1229 1252 1146 1297 1333 1374  ! 1386 1508 1508 1374 1602 1205 1412 1350 1292 I 1380 1482 1482 1225 1329 1380 1490 1530 1543  ! 1528 1297 1297 1484 1357 1484 1509 1503 1259 1461 1391 1391 1446 1295 1527 1419 1467 1388 1604 1397 1397 1563 140o 1176 1497 1339 1497 1437 1294 1492 1437 1537 1304 I 1385 1456 i 1486 I 1271 1299 i 1379 l 1453 1211 1352 l 1439 I 1488 1178 1268 1413 1468 1554 i Avc WEICHT 1471.83 1423.50 1423.50 1386.83 1396.25 1368.85 1437.33 1420.33 1392.17 510. DEv. 85.4878 77.6267 77.6267 138.0165 113.6282 122.4767 80.1765 89.6965 111.2248

            # OF BASKETS                6             6             6            6             8            26             6                 6                                      6 2 SCCRE                2.015         2.015         2.015        2.015         1.895         1.708         2.015-     2.015                                         2.015 95% CCwf. WT.       1401.51        1359.64      1359.64       1273.30      1320.12       1327.82        1371.38    1346.55                                       1300.67 SUB. %/ DAY         0.02371                     0.02749                    0.00167                      0.00476 i

t TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET '2.6 OF '17 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE l T U3/A , ~ CONDENSER BASKET WEIGHTS FOR CHECKED /DATE w~d 4/rer SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH _____ ________ _______ __________ _ ______________ . _ __/- _ _ UNIT _ _ _ _ _1 . Table 3: Evaluation of Historical At Power Sublimation Rates Based on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83- 3/30/84 4/22/84 8/31/88 BAY 6 BAY 6 BAY 6 BAY 6 BAY 6 BAY 6 BAY 6 BAY 6 BAY 6 . BASKET WEIGHT 1404 1390 1390 1335 1405 1328 1430 1210 1505 1474 1437 1437 1465 1413 1313 1352 1367, 1323 1452 1410 1410 1401 1440 1393 1298 1447 1433 14 72 14 73 14 73 1301 1440 1483 1407 1469 1354 1479 1423 1423 1431 1372 1349 1433 1250 1434 1386 1412 1412 1492 1371 1383 1267 1361 1467 1497 14 73 1425 1495 1448 1447' 1475 1280 1418 1340 1463 1420 1463 1320 1513 1425 1373 1510 t443 1320 1493 1405 1214 1435 1228 1483 1393 1345  ; 1508 1471 l 1436 1282  ! 1323 1400 1423 1505 1453 1473 1518 1208 1476 1185 Avc VEIGHT 1452.50 1424.17 1424.17 1404.17 1429.13 1414.73 STD. OEV. 1367.00 1375.69 1411.33 29.1187 28.5196 23.5196 74.2601 48.7953 82.1246 70.2652 95.9924

   # OF DASKETS               6              6                                                                                                 69.3878 6             6             8           26 2 SCORE 6          26                                                      6 2.015         2.015         2.015         2.015         1.895        1.708          2.015       1.708 95% CCNF. wi.       1428.55       1400.71                                                                                                                 2.015 1400.71       1343.08      1396.43       1387.22        1309.20      1343.54                 1354.25
   $UB. %/ DAY         0.01547                     c.01781                    0.00188                      0.00690

t

   .                                                       TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2                        .

SHEET L '7 OF 91 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE JJ 6/3/f 9 CONDENSER BASKET WEIGHTS FOR CHECKED /DATE 'u-O 4. /r/m SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 2- UN  ; ____________. _____ _______ ____ ______ ______ - ____ . ____ IT 1 ____ Table 3: Evaluation of Historical'At Power Sublimation Rates _ Based on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 BAY 7 BAY 7 BAY 7 BAY 7 BAY 7 BAY 7 BAY 7 BAY 7 BAY 7 . BASKET WEICHT 1324 1379 1379 1067 1476 981 1305 1374 1137.5 li.52 1256 1256 1149 1205 { 1076 1'.63 1441 1206 1552 1479 $ 1479 51' 1241 1215 1435 ' 1461 1449 1444 1339 1339 1443 1452 1392 l 1456 1517 1446 1569 1459 1459 l 1465 1264 1492 1515 1337 1311 ) 1492 1476 1476 1503 1279 1406 1413 1374

                                                -                                                                                           1421    j 1519          1457        1348                                    13S6     l 1536           1501        1436                                    1463 1242                       1342                                    1357 1420                       1282                                    1255 1475                       1433                                    1403     l 1476                       1448                                    1519 1341                       1487                                    1261 1339                       1345                                    1385 1468                       1386                                    1548 1471                        1457                                    13 74 1514                       1498                                     1295 1509                       1412                                    1509 1442                       1409                                              !

1471 1479 1443 1315 1514 1401 1505 1416 1192 1456 1459 1321 1401 1440 1438 1416 1428 1514 1513 1474 1540 1512 AVG WElcHT 1472.17 1398.00 1398.00 1417.15 1359.38 1372.85 510. OEv. 1431.17 1417.33 1396.71 88.6531 89.8577 89.8577 117.8364 122.5735 132.3782 0 0F GASKETS 6 6 6 70.5986 67.2448 105.3334  ! 26 8 26 6 2 5EORE 2.015 6 26 2.015 2.015 1.708 1.895 ! 95% CONF. WI, 1.708 2.015 2.015 1.708 1399.24 1324.08 1324.08 l 1377.68 1277.25 1328.50 1373.09 1362.02 1361.43 SUB. %/ CAY 0.04263 0.01752 0.01146 0.00212

t j TE!1tIESSEE VALLEY AUTHORITY SQtISQS2-0080 Rev. 2 . SHEET 7s OF 't I i BEST ESTIMATE EVALUATIOli OF ICE PREPARED /DATE kT 4/3 /p f - cot 1DEllSER BASKET WEIGHTS FOR CHECKED /DATE b d ik/E,y SEQUOYAH, UtiIT 1, CYCLE 4 SEQUOYAH 6- UtiIT

                    ------------ --------------------------------------~~---------- 1                                                                                         -

Table 3: Evaluation of Historical At Power Sublimation Rates Based on Individual Bay Comparisons (continued) I l 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/84 8/31/83 saY 8 BAY 8 BAY 8 BAY 8 BAY 8 BAY 8 BAY 8 BAY 8 BAY 8 .

      $A$KET b1]CM1             1408          1461          1461           1039           1164           1079                         1411        1355                 1403 1448          1472          14 72          1476           1357           1243                         1442        1414                 1519 1468           1456          1456           1485           1449 850                         1394'       1422                 1391 1468          1413           1413           1446           1477           1000                         1379        1367                1442 1472          1419           1419                                                                                                                !

1034 1440 1463 1397 1476 1390 j 1216 1387 1387 1184 1063 881 1I53 1344 1419 j 1356 1144 1144 1393 1308 1048 1337 1456 1411 1411 1436 1447 1425 1325 1428 1419 1419 1356 1465 1357 1 1387 1344 1482 1482 1436 1417 1089 1446 1416 1466 j 1466 1436 1422 1103 1369  ! 1300 1271 1271 1456 1458 1273 1397  ! 1384 1443 1443 1486 1510 1383 f419 l 1448 1457 1457 1436 1328 1468 1146 1344 1458 1458 1476 1473 1049 1353 1400 1475 1475 1486 j 1478 1029 1523 1480 1334 1334 1496 1 1076 1342 1336 1484 1470 1470 1436 1360 1423 1385

                              '488          1466          1466           1466 1463           1439                                                          1417 1492           1471          1471           1496           1489             932                                                         1449 1368           1511          1511           1486           1511           1064
                                                                                                                                                                                 )

1384 1420 i 1341 1341 1506 1283 1400 1286 1424 1419 1419 1444 1334 1453 1416 1317 1405 1405 1416 1396 993 1456 1384 1440 1440 1436 1432 1103 1502 1384 1492 1492 1486 1462 1221 1396 1358 1364 1036 1121 AVG WEtCHT 1417.31 1422.42 1422.42 1412.65 1387.00 1199.63 1379.33 1396.33 1386.38 STD. Dtv. 67.2689 78.0765 78.0765 127.4927 122.9793 194.0269 65.4482 s OF BAstETS 26 50.2500 73.4357 26 26 26 26 30 6 6 26 Z SCORE 1.708 1.708 1.708 1.708 1.708 1.699 2.015 2.015 95% CCNF. VT. 1394.77 1.708 1396.27 1396.27 1369.95 1345.81 1139.45 1325.49 1355.00 1361.79 509. %/ CAY 0.00085 0.00816 8 0.04381 0.00586

                                   ~

l

t.

                    '.                                                                      TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2                        .

SHEET 2.9 OF_ 9 l BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE f-T 6/3/rY CONDENSER BASKET WEIGHTS FOR CHECKED /DATE'ud dc/p? SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH / UNIT 1 ________________________.__________________7- _ _ _ _ _ _ . _ _ Table 3: Evaluation of Historical At Power Sublimation Rates ~~  ; Based on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83- 3/30/84 4/22/84 8/31/88 BAY 9 BAY 9 BAY 9 BAY 9 BAY 9 BAY 9 BAY 9 BAY 9 BAY 9 - baste 1 b11CHT 1544 1314 1314 1311 1246 1435 1195 1372 1263  ; 1500 1407 1407 1222 1368 1254 1232 1128 1480 1396 4 1477 1477 1402 1428 1387 1381 1389 1426 1288 1499 1499 1403 1461 1410 1447 1338 1423 1419 1550 1550 j 1290 1359. 1259 1390 1415 1014 j 1448 1614 1614 1428 1503 1520 1223 1467 1476 1246 1484 1384 1386 1165 1405 1366 1463 1499 1388 1505 1203 1352 1135 1481 1396 { 1145 1370 1 1390 1529 'i385 1425 1333 1666 1426 1445 1393 1465 1373 1394 1257 1304 1479 1250 .1382 1398

  • 1392 1536 1420 j{

1436 1097 1229 1542 929 1418 1247 972 1518 1378 1118 1229 ) 1460 1169 1430 1457 { 1317 1504 i 1592 1477 1532 l l 1 n G WEIGHT 1446.50 1476.83 1476.83 1342.67 1394.17 1377.50 sfD. cEv. 1373.B1 1307.19 1397.50 88.7373 105.B781 105.8781 80.9683 i 90.9185 103.9745 0 0F BASKETS 6 6 100.3291 175.0981 128.1456 t> 6 6 6 2 SCORE 26 26 26 2.015 2.015 2.0t5 2.015 2.015 2.015 1.708 4 95% tesF. vi. 1373.50 1.708 1.708  ! 1389.74 1389.74 1276.06 1319.38 1291.97 1340.20 1248.54 1354.58

                                     $UB. %/ CAY          0.00938                     0.03541                   0.00594                     0.01800                               l 1

l

     's TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2                        .                            SHEET 3o                                                   OF 17 BEST ESTIMATE EVALUATION OF ICE                                                PREPARED /DATE LT (/ 3/ g 1 -

CONDENSER BASKET WEIGHTS FOR CHECKED /DATE 'eswM 'c /r/a SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH - y'- UNIT 1-Table 3: Evaluation of Historical At Power Sublimation Rates Based on Individual Bay Comparisons (continued) -- 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/:i1/83 3/30/84 4/22/84 8/31/88 BAf 10 BAY 10 BAY 10 BAY 10 BAY 10 BAV 10 BAY 10 BAY 10 BAY 10 BASKET WElGHT 1278 1357 1357 1284 1570- 1246 1255 1181 1408 1412 1435 1435 1379 1447 1604

                                                                                ,                                1292                            1225                                    1273 1464         1548         1548          1236           1481           1460         1550
  • 1319 1480 1504 1506 1506 1508 1344 1406 1396 1250 1300 1528 1417 1417 1529 1312 1507 1230 1320 1392 1480 1578 1578- 1344 1491 1258 1473 1559 1402 1470 1402 1516 1266 1520 1526 1392 1270 1504 1386 1500 1225 1540 1420 -

1540 1515 1476 1125. 1488 1332 1524 1501 1480 1163 1520 1103 1532 1311

                             90 1413 74 1538 1468 1354-l'84 1494 1500 1559 1220 1412 1283 1k70 AVG WEIGH 1          1465.5A       1473.50      1473.50       1300.00      1440.83         1413.50       1366.00        1359.71 51D. DEv.                                                                                                                                                                         1376.67 84.6306       84.5855      84.5055      118.1812      96.7748        141.0585      128.4508 139.5357 75.0324
   # OF BA$tETS                26            6            6             6              6              6            6                                  28                                    6 2 5CcRE                 1.708        2.015        2.015         2.015          2.015          2.015         2.015                  1.703                                            2.015 05% CONF. W1         1437.19       1403.92      1403.92       1282.78      1361.22         1297.46       1260.33        1314.81                                                  1314.94 508. %/DAT          0.01837                    0.03735                    0.01338                        0.0 '17
     's TE!!!iESSEE VALLEY AUTHORITY SQtiSQS2-0080 Rev. 2                        .

SHEET 3 OF 97 BEST ESTIMATE EVALUATIOff OF ICE PREPARED /DATE l 7 4/3/47 - CO!1DEllSER BASKET WEIGHTS FOR CHECKED /DATE '<J~v'J t /.c/r9 SEQUOYAH, UtiIT 1, CYCLE 4 SEQUOYAH -/- UIIIT 1 Table 3: Evaluation of Historical At Power Sublimation Rates

                                                    ~

Based on Individual Bay Comparisons (continued) ~~ 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83- 3/30/84 4/22/84 8/31/88 BAT 11 BAY il BAY 11 BAY 11 BAY 11 BAY 11 SAY 11 BAY 11 BAY 11 . EAstEt V!!CHT 11.96 1363 1363 1282 1383 1205 1312 1262 1525 1466 1440 1440 1491 1499 1297 1411, 1270 1370 1506 1511 1511 1483 1449 1393 1460 1357 1435 1502 1525 1525 1505 1459 1473 1398 1389 1358 1526 1494 1494 1455 1496 1457 1346- 1308 1476 1288 1557 1557 14B8 1492 1432 1563 1342 1467 1322 1376 1340 1465 1373 1408 l 1453 1432 1402 1443 1376 1514 1423 1535 1503 1536 1446 1402 l'63 1437 1486 1492 1533 1533 1458 1562 1493 1079 "s - 1512

                                                                                                                                                  )

1369 ' 1376 1487 { 1434 1577 1443 999 ' 1553 1310 1510 1415 1474 I i AVG WEIGHT 1495.33 1481.67 1481.67 1450.67 1463.00 1429.08 570. OEv. 1415.00 1399.00 1407.17 21.6025 69.8331 69.8331 84.2441 44.3576 79.0088 8 CF BAsrtis 6 6 6 88.9989 135.6526 85.1338 6 6 26 6 27 2 scent 2.015 2.015 2.015 2.015 6 2.015 1.708 2.015 1.706 95% CCNF, WT. 1477.56 1424.22 2.015 1424.22 1381.37 1426.51 1402.61 1341.79 1354.46 1337.13

     $US. %/0Af          0.02865                        0.01303                   0.00479                      0.00249
     's                                                                                                                                                                            ~

TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET 3t OF 97 i BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE Lr u s/g f CONDENSER BASKET WEIGHTS FOR CHECKED /DATE us/ 4A-/sp] SEQUOYAH, UNIT 1, CYCLE 4 SE

                       - --- -- --- - - - - -- - - - - - - - - -- -- - - - - - - - - -- - - - - - - - - - ---QU--------  O Y AH      -- - '- U N IT                          ---

1 Table 3: Evaluation of Historical At Power Sublimation Rates Based on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 i 12/31/83 3/30/84 4,?2/84 8/31/88 I BAY 12 BAY 12 DAY 12 BAY 12 BAY 12 BAY 12 BAY 12 BAY l2 BASKET vel 4Hf 1404 BAT 12 1441 1441 1468 1436 1349 1239 1985 1503 1280 1467 1467 1445 1523 1375 1455,. 1217 1414 1459 1226.5 1459 1449 1456 1438 1428 1517 1370 1433 1545 If=5 1445 1295 1513 1323 1332 1361 1463 1336 1463 1444 1376 1281 1229 1201 1428 1479 1375 1375 1444 1350 1378 1335 1171 1455 1488 1062 1476 1339 1351 1377 1337 j 1416 1423 1517 1470 1352

                                                                                                                                                                       ~

1498 1469 1285 1324 1393 1402 1453 1457 1191 1492 1222 1252 1388 1332 1438 .1374 1310' 1447 1304 1234 1445 1395 1452 1400 1462

                .           1432.33        1458.33       1458.33      1449.17     1406.00       P3S2.87        1334.83        1349.15 JEv.            51.7674         54.5038                                                                                                           1349.25 54.5038        9.4110     81.7875       88.5835 8 0F EAstEis                    6            6             6 93.4289 125.9189 87.0102 6             6            23 Z SCORE                                                                                                            6               26                                 6 2.015          2.015         2.015        2.015         2.015       1.717           2.015          1.708 95% CONF. Wi.         1389.75         1413.50                                                                                                                   2.015 1413.50      1441.42      1338.72       1351.15        1257.98        1306.98                        1277.67 SUB. %/ DAY           0.01356                      0.00855                   0.00265                      0.01025 l

l t

    's

., TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET 23 OF O DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE LT u s/s t CONDENSER BASKET WFIGHTS FOR CHECKED /DATE Md'e./c/p, SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH

                                 --------- ------------------------- ------------------- r- UNIT 1                                        --------

Table 3: Evaluation of Historical At Power Sublimation Rates. Based on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 BAY 13 BAY 13 BAY 13 BAY 13 BAY 13 BAY 13 BAY 13 BAY 13 BASKET LEICHT BAY 13 1479 1425 1425 1390 1530 1233 1301 949 1450 1533 1461 1461 1480 1368 1473 1337, 1207 1284 1431 1513 1513 1355 1305 1462 1428 1393 1485

                                                                                                                                                  -1469 1539         1539         1426          1469         1383          1422      '1275           1317 1389         1469         1469         1525          1443         1260          1249        1344 1408                                                                                                      1428 1451         1451         1495          1420         1439          1475        1222          1428 947 1172 1077 1325 1452 1222 1407 1487 1355 1462 1295 1417 1481 1265 1407 1464 1537 1447 1464 1524 m 1.ElcMT                        1440.33      1476.33      1476.33      1445.17      1422.50      1375.00       1368.67 573. cEv.                      33.3441                                                                                      1330.65      1409.83 42.0412      42.0412       65.7432     78.6403      104.6155       86.6872 162.7059 93.5765 0 0F BASKEis                             6             6            6            6             6            6 2 5tCRE                                                                                                                 6           26            6 2.015        2.015        2.015        2.015         2.015        2.015         2.015 95% C0hF. WT.                     1408.79                                                                                        1.708        2.015 1441.75     1441.75       1391.08     1357.81       1288.94       1297.36      1276.15      1332.86 508. %/ DAY                       0.01857                   0.01521                   0.01449                     0.00430 7

TEli!JESSEE VALLEY AUTIIORITY SQt1SQS2-0080 Rev. 2 SHEET 34 OF 97 BEST ESTIMATE EVALUATIOli OF ICE PREPARED /DATElT U.3/ef-CO!JDE!1SER BASKET WEIGHTS FOR CIIECKED/DATE M d.r/c9 SEQUOYAH, UllIT 1, CYCLE 4 SEQUOYAH - UllIT 1 _________________________________________________________[- ________ Table 3: Evaluation of Historical At Power Sublimation Rates Based on Individual Bay Comparisons (continued) " 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 BAY 14 BAY 14 BAY 14 BAY 14 BAY 14 BAY 14 BAY 14 BAY 14 BAY 14 SA$tET LElcHT 1412 1437 1437 1470 1383 1427 1339 1146 1269 1470 1497 1497 1450 1421 1360 1448 1304 1449 1483 1520 1520 1445 1348

  • 1435 1375 1436 1480 1410 1415 1415 1464 1505 1522 1404 1254 1477 1416 1455 1455 1404 1409 1355 1243 1349 1363 1306' 1301 1301 1505 1271 1447 1286 1326 1469 1501 1355 1506 1427 1212 1322 1452 1275 1462 1405 1363 1476 1439 1470 1323 1507 1364 1368 1401 1414 K62 l 1404 1512 1396 1491 1422 1346 1437 1497 1396 1436 1436 1445 1486 1427 1444 1479 1507 1129 1262 1392 1314 1332 1402 1312 1284 1440 1359 1416 1362 1437 1446 1472 1401 1450 1423 1298 1195 1454 1526 AVG WElGHT 1417.00 1437.50 1437.50 1456.33 1389.50 1415.23 1349.17 1385.15 1404.96 51D. DEV. 63.6333 77.1900 77.1900 33.2305 78.1275 77.9463
           # OF BASKETS                           6              6 75.9037 91.0159 97.6399 6            6            6            26             6          26            26 2 5CCRE                            2.015         2.015        2.015        2.015        2.015        1.708          2,015 95% CCNF. wt.                                                                                                                    1.70S        1.708 1364.65        1374.00      1374.00      1429.00      1325.23      1389.12       1286.73      1354.67     1372.26
          $US. %/ DAY                     0.00544                     0.01733                   0.01377                     0.01339

g

 .                                                     TENNESSEE VALLEY AUTHORITY SQNSQS2-0080              Rev. 2          .

SHEET W OF 97 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE J.7 (/3/e Y CONDENSER BASKET WEIGHTS FOR CHECKED /DATE u, / 2 /s/sy SEQUOYAH, UNIT 1, CYCLE 4 _________________________________________________QUOYAH SE 6- UNIT 1 Table 3: Evaluation Based on Individual of Historical Bay At Power Sublimation Comparisons (continued) Rates _ 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 ~ 3/30/84 4/22/84 8/31/88' 3AY 15 BAY 15 BAY 15 BAY 15 BAY 15 BAY 15 BAY 15 BAY 15

      'tt(Ei WEICHf                                                                                                                    BAY 15                            .

1392 1513 1513 1535 1292 1376 1343 1127 1292 1359 1339 1339 1418 1280 1225 1196 1097 1364 1387 1385 1385 1310 1462 1237 1371 1367 1382 1487 1457 1457 1470 1474 1436 1442' 1245 1351 1435 1424 1424 1482 1325 1280 1421 1040 1456 1497 1550 1550 1485 1504 1507 1225 1143 1395 1227 1148 1325 1165 1376 1173 1411 1013 1389 1313 1286 1432 1368 1252 1435 1344 1416 1432 1429 1390 1444 1269 1457 1380 1261 1407 1242 1290 1368 1423 1465 1432 1449 1328 1166 1393 1475 1514 1530 1514 AVG WE1cHT 1415.50 1444.67 1444.67 1450.00 1389.50 1343.50 1366.04 1293.50 52.0183 78.8281 1384.00 78.8281 78.0999 101.1568 114.6835

          .ou T S             6                                                                       97.0903 142.7550                    67.0164 6            6             6            6            6             26          26                                           6 2 SCCRE                2.015        2.015        2.015        2.D15         2.015        2.015 951 CONF. WT.

1.708 1.708 2.015 1372.71 1379.82 1379.82 1385.75 1306.29 1249.16 1333.32 1245.68 1328.87

   $UB. t/0AY          0.00411                   0.00186                   0.01250                    0.01733
                                    's
 .                                                                                      TE!!NESSEE VALLEY AUTHORITY SQNSQS2-0080              Rev. 2           .                         SHEET 3 '            OF 97 DEST ESTIMATE EVALUATION OF ICE                                             PREPARED /DATEL.7 U3/go CONDENSER BASKET WEIGHTS FOR                                                  CHECKED /DATE M /u us SEQUOYAH, UNIT 1, CYCLE 4                                                               SEQUOYAH /-- UNIT 1 Table 3:           Evaluation of Historical At Power Sublimation Rates                                                                          l Based on Individual Bay Comparisons (continued)                                                  --

9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 BAY 16 BAY 16 BAY 16 BAY 16 BAY 16 BAY 16 BAY 16 BAY 16 BAY 16 , BA$KET LEICHT 1490 1445 1445 1326 1459 1450 1439 1334 1421 1426 1439 1439 1466 1492 1511 1246 1255 1465 l 1414 1445 1445 1480 1321 1414 1260 1460 1411 1484 1505 1505 1326 1. 8 1242 1343 { 1305 137F i 1460 1491 1491 1566 1306 1222 1530 1312 1443 1494 1495 1495 1536 1543 1483 { 1252 1133 14 y. 1184 1390 1392 1471 1457 1416 l 1442 1387 -j 1497 1301 1 1184 1339 1158 1418 {1 1405 1457 I 1434 1451 1442 1217.5 1452 1415 1490 1426 1385 1392 1270 1090 1387 1368 - l 1444 1400 1502 1404 1482 1402  ! 1586 1399 1656 1441 I l AVG LTICHT 1461.33 1470.00 1470.00 1450.00 1439.83 1387.00 1345.00 1386.46 1391.98 sfD. DEv. 34.3317 30.0067 30.0067 102.7229 101.8576 124.5311 8 0F SAstETS 6 6 117.2519 130.9770 82.7812 6 6 6 6 6 26 26 2 scent 2.015 2.015 2.015 2.015 2.015 2.015 2.015 1.708 1.708 l 95% OcNr. WT. 1433.09 1445.32 1445.32 1365.50 1356.04 1284.56 1248.55 1342.59 1364.25 508. %/ DAY 0.00677 0.02391 0.01506 -0.01982

     .-                                                                                                                                                                                                       l i

TE!!!1ESSEE VALLEY AUTHORITY SQllSQS2-0080 Rev. 2 i

                                                                                                                                                 .                         SHEET 37              OF '17 DEST ESTIMATE EVALUATIOli OF ICE                                                         PREPARED /DATE !.T %/gr CO!JDENSER BASKET WEIGHTS FOR                                                                CHECKED /DATE b,4 urdP9                  (

SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH d- UllIT 1 l Table 3: Evaluation of Historical At Power Sublimation Rates Based on Individual' Bay Comparisons (continued) '~ ) r l 9/10/81 1/25/82 1/25/82 9/*3/82 '12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 'k BAY 17 DAY 17 BAY 17 BAY 17 BAY 17 BAY 17 CAY 17 BAY 17 BAY 17 . BAstET WEIGHT 1306 1333 1383 1345 1225 1012 1349 1369 1362 1360 1435 1435 1438 1'06 1064 1342 1383 1360 1458 1367 1367 1408 1367 1383 1340. 1365 1288 1448 1367 1367 1408 1214 1026 1309 1271 1298 1414 1313 1313 1346 1503 1108 1550- 1239 1313

                                                                                              '14 v4         1495         1495         1153          1396          1393          1348       1417       1458 1408                        1306          1383                    998 1458                        1164          1323                  1387 1448                         1126          1357                 1344 1380                         1223          1184                 1298 1321                         1243          1330                 1294 1454                         1413          1310                 1342 1417                         1286         $420                  T250 1458                        1281          1427                  1374 1388                        1234          1433                  1343 1443                        1199          1395                  1217 1456                        1313          1440                  1388 1460                        1413          1392                  1381 1265                        1438          1384                  1370 1428                        1137         '1426                  1289 1460                        1167          1374                  1363' 1458                        1433          1232 1385 1468                        1396          1401                  1393 1462                        1113          1434                  1309 1488                        1133          1430                  1264 1490                        1328          1496                  1383 1468 1382 1003 1097
             . di                                                                       1413.33         1393.33      1393.33      1412.04       1351.83       1242.73      1377.27      1340.67 SfD. DEV.                                                                          69.3820         63.2761                                                                                   1325.04 63.2761      75.6743      112.2950      142.0000 0 0F BAstETS                                                                                6 75.4589 69.5749        85.5773 6            6           26              6           30             26         6 Z SCORE                                                                               2.015                                                                                                         26 2.015        2.015        1.708          2.015        1.699         1.70S       2.015     1.708 952 CONF. WT.                                                                      1356.26         1341.28      1341.28      1386.69       1259.46       1198.69      1351.99      1283.43   1296.37
     $UC. 1/ DAY                                                                       0.00876                      0.01466                     0.01379                    0.01334

il f_ "I TE!!!1ESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET 38 ~ OF 197-

                                            'BEST. ESTIMATE. EVALUATION OF. ICE                                                  PREPARED /DATE l-7 t/3/ es-CONDEllSER BASKET WEIGHTS FOR.                           -

CHECKED /DATE 'usfe4/s9 SEQUOYAH, UNIT 1, CYCLE.4 SEQUOYAH /- UNIT 1 Table 3: Evaluation of Historical At Power Sublimation. Rates Based on. Individual Bay Comparisons (continued) " 9/19/81- 1/25/82 1/25/82 9/13/82 .12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 BAY 18 BAY 18 BAY 18~ BAY 18 BAY 18 BAY 18 BAY 18 , BAY 18 BAY 18 . BA5KET LEICMY' 1446- 1367. 1367 1261 1343 964 1345 1332 1387 1366 1445 1445 1359 1481

                                                                                                              .                   1091           1451 ,      1387         1327
                                                        ".87          .1459          1459          1389            1414"          1100 j

1473 1373 1259' l 1459 1359 -1359 1355 1376 1112- 1291 1328 1262; 1480 1443 1443 1406 1244 1323 1441 1307 1330 ~1330j 1357 1357 1296 1435 1382 1380 1519 1375 - 1192 1475-1252 1387 1338 -1288 1468 1376, 1238 1264 1275 1314-1318- T304 1473 1229 1191 1341 1191 1345 1323 1428 1463 1224 1518 l 1229 1109 1306 1204 1343

                                                                                                                               '1446                                    1281
                                                                                                                              -1368                                     1178 1122                                    1294.-

1081 ~ 1249' f 1428 1370 $ 1493 , 1038. ' 1067 l 1 l AVG wtsowi 1428.00' 1405.00 1405.00 l 1344.33- 1382.17 1260.97 1396.83 STD. DEv. 64.6808 1374.33 1314.04 48.6292 48.6292- 55.5110 82.7464 158.0661 { O OF BASKETS 6 6 '6 6 70.5079 76.8939 69.0104L j 6 29 6- 6

2 SCORE 2.015 26 2.015 2.015 2.015 2.015 1.701 2.015' 2.015 - 1.708 95% CONF. WI. 1374.79 1365.00 1365.00 .l 1298.67 1314.10 1211.04 1338.83 '

1311.08- 1290.92 i

                     '5U8. %/ DAY                0.00565                      'O.02104                     0.02241                         0.00546                                 i l

l i I

   .}

TENNESSEE VALLEY'AUTIIORITY l SQNSOS2-00801 Rev. 2 . SHEET'39 OF 't Y BEST. ESTIMATE EVALUATIOli OFLICE PREPARED /DATE J.7 t/3/ a r q CONDENSER BASKET WEIGHTS.FOR CHECKED /DATE 'u,W/ s/_r/s4 4 SEQUOYAH, UNIT'1, CYCLE SEQUOYAH 4- UNIT.

                     ----------------------------------------------------------------.1.                                                                                                                        'f Table 3:           Evaluation'of Historical At Power Sublimation Rates.                                                                                                                       .

Based.on Individual Bay Comparisons-(continued) .! 9/19/81 1/25/82 N25/82 9/13/82 12/16/82 12/31/83 3/30/84 - 4/22/84' 8/31/88 BAY 19. BAY 19 BAY 19 BAY 19- BAY 19 - BAY 19 BAY 19

                                                                                                                                                                                                                'f
                                                                                                                                                                          . BAY 19            BAY 19            >

l BASKET LEICHT 1447. 1307' 1307. 1395 1229 1084 1501 1476 J 1382. 1414 1377 ,1377 1419 1386 1046 1422 1453 1464-1490 1521 1521 1380 1418 1145 1423 1404 1302 1474 1423 1423 1392 1482 1136 1521 1359 1388 1402 1523. 1523 '1492 1433 1473 1508' 1454 1253 1402 1501 1501< 1489 1265 1360 1341 1487 1226 1240 1398 1468 1267 1353'

                                                                                                                                                                                                   ~

1453 1508 1312 1246 j 1373 " 1448 1271 1280-1333 1403-1440 1204 1533 1503 1139 AVG UtlCHT' 1438.17 1442.00 1442.00 . 1427.83 1368.83 1320.07 1452.67 5T0. OtV. 38.0758 88.4240 1429.20. 1379.33 88.4240 50.1734 99.9708 138.0752-s CF BA5KETS 69.7959- 47.2620 90.3143 6 6 6 6 6- 27 6 5 6-2 SCORE 2.01$ 2.015 2.015 2.015L 2.015 1.706' 95% CCNF. WT. 1406.84

                                                                                                                                       '2.015                                         2.132'     2.015 1369.26      1369.26          1386.56      1286.60        1274.74                     1395.25                                               1384.14    1305.04 SUB. %/ DAY.        0.02120                      0.00547                       0.00263                                  0.00210 4
                              +e

__ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ - - - - - - " - - - - ^ - " ' - ~~

                             'a
                       .,                                                      TENNESSEE VALLEY AUTHORITY l

SQNSQS2-0080 Rev. 2 . SHEET 4o OP 97 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE j_7 u3/gf l CONDENSER BASKET WEIGHTS FOR CHECKED /DATEu+/ #f /49 SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 4- UNIT {

                                            ----------------------------------------------------------------1                                                    i l

Table 3: Evaluation of Historical At Power Sublimation Rates. Based on Individual Bay Comparisons (continued) 1 1 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83' 3/30/84 4/22/84 8/31/88 SAY 20 BAY 20 SAY 20 BAY 20 ) BAY 20 BAY 20 BAY 20 BASrti kEICHT 1311 BAY 20 BAY 20 - ) 1357 1357 1271 1250 1126 1550 1419 1255 1442 1509 1509 i 1264 1500 1079 1550 ,. 1227 1294 i 1437 1437 1437 1412 1411 1094 1412 1382 1467 1368 1345 1345 1432 1288 1268 1521 1452 1377 1444 1525 1525 1238 1480 13 99 1281 1387 1437 15C6 1559 1559 1429 4 1558 1147 1524 1403 1425 1158 1265 1468 1502 123S j 1273 i 1383 1513 1203 1236 1283 1453 1118 1160 1373 1493 1033 1114 1443 1469 1516 1043 1131

                                                                                                                                                                 )

AVG VEICHT 1434.50 1455.33 1455.33 1341.00 1414.50 1275.57 510. CEv. 65.6864 1473.00 1362.14 1359.33 90.1769 90.1769 92.1998 122.6927 162.5909 107.0962 83.3555 0 0F BASKETS 6 6 6 71.9518 6 6 28 6 Z SCCRE 2.015 7 6 2.015 2.015 2.015 2.015 1.703 2.015 1.943 95% CChr. wi. 1380.47 1381.15 2.015 1381.15 1265.15 1313.57 1223.24 1384.90 1300.93 1300,14 5U8. %/ DAY 0.00039 0.03636 0.01965 0.01596

 .,                                                      TEN 11ESSEE VALLEY AUTHORITY SQNSQS2-0080              Rev. 2                                    SHEET ffI            OF 97 DEST ESTIMATE EVALUATION OF ICE .                                           PREPARED /DATE E7 4/3/s t CONDENSER BASKET WEIGHTS FOR                                                   CHECKED /DATE bd t&4, SEQUOYAH, UNIT 1, CYCLE 4                                                              SEQUOYAH "- UNIT 1 Table 3:           Evaluation of Historical At Power Sublimation Rates, Based on Individual Bay Comparisons (continued) 9/19/81        1/25/82      1/25/82      9/13/82      12/16/82     12/31/83      3/30/84      4/22/84 8/31/88 BAY 21         BAY 21                                                                                                           j BAY 21       BAY 21       BAY 21       BAY 21        BAY 21       BAY 21     BAY 21               - i BASKET WEIGHT           1488          1471         1471         1388         1285          1026         1436       1225                 1385   l 1508          1541         1541         1332         1441          1124         1513       1407                 1432   I 1446          1431         1431         1285         1252          1080         1462       1260                 1450 1318          1313         1313         1465         1470          1134         1270       1410                 1316 1466          1451         1451         1467         1321          1482         1370       1494                 1500   j 1521          1512         1512         1452         1477          1530         1364       1504                 1355   l 1019 1165 l                                                                                                1435 1548 989 1204
                                                                                                                                              ~

1328 1528 995 l 1174 883 l 1009 I 1194 l l 1421 l 1383 1 876

                                                                                                                                                     )

1028 l 1418 I 959 1049 1302 1439 959 1052 AVG WElGHT 1457.03 1453.17 1453.17 1398.17 1374.33 1191.10 1402.50 stD. CEv. 73.7249 1383.33 1406.33 79.5447 79.5447 76.6692 99.9273 211.0882 0 0F BAscris 85.9855 116.9268 67.2151 6 6 6 6 6 30 6 6 3 SCORE 2.015 6 2.015 2.015 2.015 2.015 1.699 2.015 2.015 2.015 95% CONr. WI. 1397.19 1387.73 1337.73 1335.10 1292.13 1125.62 1331.77 1287.15 1351.04

    $UB. %/ CAY         0.00537                    0.01642                   0.03662                     0.00882
   's
 ,                                                     TEllNESSEE VALLEY AUTi!ORXTY SQllSQS2-0080 Rev. 2                                                  SHEET 4 2- OF 9 ~7 BEST ESTIMATE EVALUATION OF ICE .                                            PREPARED /DATEF7 t/3/g9 -                     )

CONDENSER BASKET WEIGHTS FOR CHECKED /DATE m/ur/n - SEQUOYAH, Uli1T 1, CYCLE 4 SEQUOYAH 4- UNIT I ~ Table 3: Evaluation of Historical'At Power Sublimation Rates

                                    ' Based on Individual Bay Comparisons (continued)                                              ~~

l 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 l 3/30/84 4/22/84 8/31/88 j DAY 22 DAY 22 BAY 22 BAY 22 BAY 22 BAY 22 BAY 22 BAY 22 BAY 22 .  ! BASKET LEICHT 1392 1341 1341 1409 1319 976 1472 1306 1458 1528 1417 1417 1317 1592 1087 1394 1485 1555 1460 1$41 . b41 1357 1370 1224 1372 ' 1483 1374 1402 1549 1549 1505 1439 1150 1533 1346 1493 i 1520 1446 1446 1463 1495 1483 1495- 1499 1343 f 1532 1533 1533 1465 1484 1515 1546 1445 1249

                                                                                                                                              )
                                                                                                                                              'l 1283 1358 j

1544 1275 1315

                                                                                                                                              )

1393 j 1423 I 1518 ., l l 1356 l 1345 1416 1361 1358 I 1458 1 1533 1245 1297 ' 1513 1523 1263 1219 ] 1483 1403 1500 1286 1144 A/G VEIGNT 1472.33 1471.17 1471.17 1419.33 1449.83 1.T48.36 1468.67 STD. CEv. 1423.80 1444.67 64.0052 83.9867 83.9867 71.8266  ; 96.9813 141 2816 71.7542 90.6019 77.4820 0 CF BASKETS 6 6 6 6 6 33 6 2 sccRE 5 6 2.015 2.015 2.015 2.015 2.015 1.645 2.015 2.132 2.015 95% CCNF. WT. 1419.68 1402.08 1402.03 1360.25 1370.05 1307.91 1409.64 1337.41 1380.93 TUB. 1/ CAY 0.00984 0.01292 0.01296 0.01348 ,

i t TEMtiESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 SHEET 43 OF 1 '?  ! BEST ESTIMATE EVALUATION OF ICE PREPARED /DATEl7 (/3/ 5 7 - 1 CONDENSER BASKET WEIGHTS FOR CHECKED /DATE ww/ 4 4 429 SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 4- UNIT 1 Table 3: Evaluation of Historical At Power Sublimation Rates Based on Individual Bay Comparisons (continued) ~ 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 BAY 23 BAY 23 BAT 23 BAY 23 BAY 23 BAY 23 BAY 23 BAY 23 BAY 23 StSKE1 LE!cNT 1496 1479 1470 1262 1306 1110 1541 1464 1486' 1348 1347 1347 1459 1516 1074 1447 1311 1394 'I 1488 1445 1445 1474 1472 ' 1108 1410 1357 1339  ; 1430 1449 1449 1350 1456 1375 1547 1502 1416 1470 1503 1503 1346 1326 1475 1314 1398 1506 i 1412 1507 1507 1490 1531 1074 1414 1461 1418 { 1218 1231 1295 1514 - 1448-1372 1286 l 1323 I 1407 - j 1486 ' 1151 1218 1325 1355 { 1426 l 1204 1246 1513 1035 1131 1441 1523 1032 1011 ,

                      ...u  licht          1440.67       1455.00      1455.00      1396.83                                                                      i 1434.50      1273.64       1445.50      1404.75    1426.50 Sto. cEv.           56.0095       58.9644      58.9644       91.0569     96.0286      161.2698       88.2831     99.5501 O of BASKETS                6                                                                                                61.2462 6            6            6            6           2B              6          8           6 2 sccsE                 2.015        2.015        2.015        2.015        2.015        1.703          2.015       1.895 953 CCNf. WT.       1394.59                                                                                                    2.015 1406.49      1406.49       1321.93     1355.50       1221.74       1372.S8      1338.05    1376.12 SUS %/0AY           0.00677                    0.02603                   0.02B19                     0.00668

~_-_._____--__---a

i

   .                                                           TENNESSEE VALLEY AUTHORITY SQNSQS2-0080             Rev. 2                                     SHEET 44 OF 97 BEST ESTIMATE EVALUATION OF ICE                                             PREPARED /DATE LT #3/ g1 CONDENSER BASKET WEIGHTS FOR                                                  CHECKED /DATE W ur/A SEQUOYAH, UNIT 1, CYCLE 4                                                              SEQUOYAH '-- UNI
                           --------------------------------------------------                                             --------- T 1 Table 3:

Evaluation of Historical At Power Sublimation Rates. Based on Individual Bay Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/84 8/31/88 BAY 24 BAY 24 BAY 24 8AY 24 BAY 24 BAY 24 BAY 24 BAY 24 BAY 24 - BA$KE1 WE1 CHI 1368 12?7 1297 1496 1537 1114 1420 1374 1429 1=54 1343 1343 1536 1286 1275 1354 , 1217 1327 1496 1415 1415 1540 1287 1113 1241 1284 1489 1520 1375 1375 1176 1409 1189 1371 1012 1450 1476 1331 1331 1193 1371 - 1443 1486- 1108 1444 1319 1243 1243 1382 1309 1457 1247 1023 1409 1480 - 1488 1137 1230 1554 1500 1510 1159 1365 1462 1390 1540 1393 1462 1326

                                   '342                                     1382                      1431                      1190       1427 450                                  1366                       1115                      1290       1465 i392                                   1476                       1149                      1405       1284 1468                                    1420                       1235                      1448       1328 1380                                    1490                       1348                      1205       1404 1380                                    1374                       1428                      1350       1492 1372                                    1390                       1135                      1330       1495 1226                                    1400                       1216                      1410       1281 1356 1312                       1143                      1230       1442 1396                                    1356                       1255                      1290       1503 1356                                                                                                            ;

1273 1278 ' 1305 746 1400 1321 1313 1215 1315 1354 1225 1323 1305 1422 1252 1342 997 1280 1461 1340 1370 1092 134- 1240 '1350 1348 1278 940 1377 1284 1282 1290 980 1272 811 9 73 1148 1077 847

       ' AVG 4T]OHT           1392.92        1334.00      1334.00      1384.15      1366.50      1198.77 STD. DEV.                                                                                              1353.17      1249.54    1378.04 75.2175        59.9700      59.970D     104.6280      96.9572     161.6630
       # OF BA5KETS                  26             6                                                          96.2111 140.8901 150.9862 6           26            6            31 2 SCORE                                                                                                         6          26         26
1. 708 2.015 2.015 1.708 2.015 1.645 2.015 958 CCwf . Wi. 1367.73 1.708 1.708 1284.67 1284.67 1349.11 1286.74 1151.01 1274.02 1202.35 1327.46 508. %/ DAY 0.04820 0.02171 0.03014 0.01481 l

l

                                                                                                                                        ~                    - - ,

4 4  ;

 , F(,0 TENNESSEE VALLEY AUTHORITY SQNSQS2-0080            Rev. 2.                         SHEET 'Ii ~ OF 97 DEST ESTIMATE EVALUATION OF ICE                                   PREPARED /DATE l-7 u3/g 5 CONDENSER BASKET WEIGHTS FOR CHECKED / DATE ca~N/i/p5 SEQUOYAH, UNIT 1, CYCLE 4                                                    SEQUOYAH 4- UNIT 1                                             I Tabic 4:         Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons                                                                  --
                                                                                                                                                                   ]
                                                                                                                                                                 'l l

9/*9/81 l 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88 Z-SCORI! CRI-RJ CR1-R1 GRI-R1 GRI-R1 GR1-R1 GR1-R1 GR1-R1 GR1-R1 GR1-R1 j BA5KE1 VE!GHT 1255 1311 1311 - 1283 1260 1197 1522 1333' 1231 1440. 6.31! 1269 1269 1309 1323 1173 1384 1334 1476 2.9: I 1301 1267 1267 1197 1232 1010 1291 1338 1507.5 1518 1397 1397 1351 2.35:j 1293 1110 1551 1238 1527 2.13; j 1386 1297 1297 1225 1372 1176 1509 1417 1374 2.0l! ! 1404 1410 1410 1301 1406 1328 1298 1185 1505 1.943 1324 1256 1256 1067 1364 1211 1463 1337 1137.5 1.89! l 1216 1144 1144 1039 1252 1176 1442 1422 1146 1.8fI 1034 1357 1178 1.833 1275 1295 1328 1.812 1405 I?!4 1.79C l 1440 981 1.781 l 1372 1192 1.771 ' 1205 850 1.761 1264 881 1.753 1279 1089 1.74! ! 1063 1049 1.74 1076 932 1.734 i 993 1.725 l 1036 1.72!'l 1.721 l 1.717 1 1.714 ' 1.711 1.70E 1.70fi 1.702 1.701 1.695 1.64! ' 1.04! 1.64! AVG WElGHT 1329.38 1.04! i 1293.88 1293.88 1208.10 1292.11 1105.20 1432.50 1325.50 1389.13 1.64! i 510. CEV. 102.2964 84.2283 84.2283 119.5087 104.2316 135.5098

       # OF EARITS                                                                                 99.5633 80.6208 100.0171                             1.64!

8 8 8 10 18 20 8 8 Z-SCORE 1.895 1.895 1.895 1.833 8 1.64!! 1.74 1.729 1.895 1.895 1.895 1.04! l 95% C0hF. W1. 1200.84 1237.44 1237.44 1138.83 1249.36 1052.81 1365.79 1271.49 1281.92 1.64!

      $U8. %/0AY                                                                                                                                        1.64!

0.01473 0.03450 0.04495 0.01817 1.041 _ _ _ - _ _ _ _ _ _ _ . _ _ _ ~

i

 ,                                                       TEN!1ESSEE VALLEY AUTHORITY SQNSQS2-0080             Rev. 2                                     SHEET W             OF      'l 7 BEST ESTIMATE EVALUATION OF ICE                                             PREPARED /DATE 47 ch/My CONDENSER BASKET WEIGHTS FOR                                                  CHECKED /DATE W i/i/.<y                              ;

SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH /-- UNIT.1  ; Table 4 Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons (continued) 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82. 12/31/83 3/30/84 4/22/85 8/31/8B 1.645 ; CR1-R2 GR1-R2 GRI-R2 GRI-R2 GRI-R2 GR1-R2 GR1-R2 GR1-R2 GR1-R2 1.645 I' BA5KE! VE1CHT 1295 1104 1104 994 1278 815 1489 1355 1552* 1.645 1341 1353 1363 1271 1311 1007 1380 1350 1514 1.645 1384 1399 1399 1266 '1268 1185 1392 1210 1563 1.645 1478 1431 1431 1352 1397 1214 1438 1457 1464 1.645 1380 1391 1391 1159 1329 1120 1443 1425 1292 1.645 1474 1423 1423 1250 1371 1043 1430 1296 1386 1.645 1444 1339 1339 1336 1241 1344 1103 1490 1208 1311 1.645 I 1271 1271 1229 1164 1290 1267 1374 -1357 1.645 1300 1334 1334 1335 1283 1243 1435 1367 1374 1.645 3 1344 1341 1341 1149 1146 1411 1471 1.645 1368 l 1242 1211 1353 1.645 l 1341 1349 1.645 1184 1228 1.645 1076 1.645 1412 1.645' 1 1079 '1.645-1000 1.645 1048 1.645 - 1103

  • 1.645 1029 1.645 l 1064 1.645 1103 1.645 1 1121 1.645 )

1.645 l 1.645 l 1.645 i 1.645 1.645 j 1.645 l 1.645 i 1.645 i 1377.45 1339.60 1339.00 1239.08 1203.56 1129.96 1417.50 1333.00 1421.55

           .V.           63.5317       95.6117      95.6117     100.5530      69.6529      127.9817      63.8144 s Cr CASKEIS                 11 86.1307 95.5064 10            10           13            9           23           10         9             11            l 2*SCCRE                  1.812        1.833         1.833        1.782         1.86        1.717         1.833 95% CCSF. WT.

1.86 1.812 '! 1342.74 1284.18 1284.18 1189.38 1250.37 1084.14 1380.51 1284.60 1369.37 5U8. %/ DAY 0.03462 0.031G6 0.03799 0.01828 i

s l

                            .                                          KD TENNESSEE VALLEY AUTHORITY

\ l SONSQS2-0080 Rev. 2- SHEET 47 OF 97 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE L r U3/s f CONDENSER BASKET WEIGHTS FOR CHECKED /DATE Lf ck/e 3 SEQUOYAH, UNIT 1, CYCLE _4 SEQUOYAH/-- UNIT l' Table 4: Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons-(continued) ~~ 9/19/81 1/25/22 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88 CRI R4 GRl-R4 GRI-R4 GR1-R4 GRl-R4 GRI-R4 GRI-R4 GRI-R4 GRI-R4 PASKET WE!Gni 1352 1259 1259 1191 1340 1183  !!90 1010 -1299 1376 1331 '1331 1308 1391 1306 1309 1352 1438 1420 1355 1355 1428 1406 1351 1328 1374 1390 1448 1415 1415 1418 1404 1326 1337 1021 1265 1383 1443 1443 1396 1406 1319 1359 1286 1259 1440 1439 1439 1376 1413 1322 1297 1329 1323 1408 1429 1429' 1378 1457 1330 1407 1306 1206 1456 1436 1436 1402 1449 1425 1305 1334 1421 1399 1435 1435 1438 1422 1336 1253 1317 1255 1416 1397 1397 1374 1396 1373 1339 1261 1428 1390 1390 1431 1378 1314 1295 1475 1379 1373 1420 1363 1340 1315 1464 1461 1461 1442 1294 1401 1461 1413 1413 1428 1299 1523 1452 1411 1411 1393 1352 1426-1452 1443 1443 1436 1383 1448 1470

                                                                                                                                                                                                                          )

1470 1436 1393 l 1419 1419 1423 ) 1348 1386 1409

                                                                                                                                                                                                                          ]

1342 j i

                                                                                                                                                                                                                          )

l 4

                                                                          /YG WElGHT           1428.12             1406.94       1406.94       1393.82      1408.40      1347.32      1309.44    1276.83 510. CE V. -                                                                                                                      1338.47 34.8459             51.1209       51.1209       62.4272     32.2876       52.8001      61.9518 124.1391      39.22'33
                                                                          # Of BA$tE15                       17          18             18           17           10           22            9         12 2-5 CORE                                                                                                                                 15 1.746                1.74          1.74         1.746        1.833        1,721 9 V. CONF. WT,                                                                                                  1.86     1.796       1.761 1413.36             1385.98      1385.98        1367.59     1389.68       1327.94      1271.03    1212.47    1297.90 SUB. 7./0AY         0.01538                           0.00581                    0.01269                    0.01212

s TENNESSEE VALLEY AUTHORITY { SQNSQS2-0080 Rev. 2 SHEET 48 OF 4~7 i BEST ESTIMATE EVALUATION OF ICE . PREPARED /DATE LT U3/s1' CONDENSER DASKET WEIGHTS FOR CHECKED /DATE bs dr/m ' SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 4 UNIT 1  ! _________________________________________________________________ i Table 4: Evaluation of Historical At Power Sublimation Rates  ! Based Group-Row Comparisons (continued)  !

/!Wo1 1/25d2 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88*

3 1-46 091 46 ORl R6 GR1-R6 GR1 R6 . GRl-R6 GR1-R6 GR1-R6 GR1-R6

                      '4SE1 '.i10 ti                                     1220                 1179               1179                  1097            1441                                 1191, 1188                           1405       1533 1296                 1275               1215                  1249            1463                1463             1284          1447       1314 1356                 1287               1787                  1335            1517                1408             1461          1441       1444 1432                 1355               1355                  1493            1485                1442             1399          1144       1432 1500                 1427               1427                  1482            1437                1416            1420          1249        1388 1444                 1504               1504                  1496            1497                1360            1437          1349        1433 -1 1457                1455                1455                  1407            1476                1430            1451          1441        1449 1460                 1489               1489                 1420            1477                 1365            1412          1342        1386 1468                1485                1485                 1456            1458                 1430            1430          1401       1403 1480                1490               1490                 1501             1478                '1463            1413          1469       1385 1468                1482               1482                 1488             1432                1483             1397          1467       1509 1426                 1437               1437                 1484                                 1476                           1414       1505 1819                 1459               1459                 1492                                 1437                           1409       1416     I 1496                 1472               1472                 1465                                 1456                           1389       1403 1472                 1419               1419                1475                                  1439                           1399       1391 1472                 1457               1457                1471                                  1473'                         1425        1390 1492                 1466               14E6                1479                                  1463                         1420         1387 1468                1405                1405                1474                                  1508                         1435         1397 1456                                                        1485                                  1436                         1471         1385 144B 1356                                  1448                                      1317 1484
                          ,                                                                                                         1456                                  1443                                      1396      l 1416                                                        1496                                                                                      '

1425 1423 1358 l 1 j i AVG Lt1GHT 1437.73  ;:19.06 d 1419.06 1434.41 1469.18 1426.38 1390.45 510. OEY. 1395.63 1412.52 67.f265 69.2086 69.2086 98.2095 26.2138. 62.8717 S0.9004 60.4420 54.5322 i CF EA54 15 22 18 18 22 11 24 11 19 2-tCC4[ 21 1.721 1,74 1,74 1.721 1.812 1.714 1.812 1.734 351 CCM . VI, 1.725 > 1412.95 1382.47 1332.47 1398.37 1454.66 1404.38 1346.26 1363.03 1392.00 508. k/l4 0.01712 -0.C3498 0.00991 0.00340

      ~

s TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET 44 OF 4 '7 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE A7 f/3/# f '~ CONDENSER BASKET WEIGHTS FOR CHECKED /DATEa s u'.cNf SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH(-- UNIT

                                                                                          -------------------~~-------1                        l Table 4:

Evaluation Based Group-Rowof Historical Comparisons At Power Sublimation Rates _ (continued) l

                       ?/!?/81         1/25/82      1/25/82      9/13/82      12/16/82      12/31/83     3/30/84       4/22/85 8/31/88
  • 641-R8 ORI P8 ORI R8 GRI-R8 GR1-R8 GR1-R8 GR1-R8 GR1-R8 GR1-RB M5tti '.!!GHT 1325 1131 1131 1147 1399 1204 1111 , 1530 1487 1336 1255 1255 1407 1380 1383 1177 1469 1394 1429 1347 1347 1625 1440 1439 1417 1461 1561 1528 1469 1469 1519 1478 1279 1482' 1484 1483 1528 1490 1490 1529 1492 1528 1465 1420 1543 1479 1508 1508 1468 1440 1512 1419 1264 1467' 1552 1466 1406 1382 1501 1527 1433 1384 1446 1492 1412 1412 1446 1440 1543 1456. 1148 1463 1479 1479 1455- 1511 1537 1394 1456 1519
                                              '466         14E6         1519                       1488                     1442         1548 1475         1475         1476                       1448                     1476        1456 1511         1511         1509                       1436                                -1513 1492         1492         1496                       1406                                 1449 1506                       1401 1486                       1463 1453 a

i i, AVG Vf!CHT 1464.88 1423.15

     "'                                               1423.15      1465.33      1453.44       1440.44 78.6931 1372.67- 1412.18        1486.85 113.7459     113.7459     104.3392      45.5031       93.5015     133.4101 111.4171         48.0969 A%E TS                 8           13           13            15            9            16            9          11          13     j SCCRf               1.895          1.782        1.782        1.761          1.E6        1.753          1.86       1.812       1.782 953 C0'J. WT.       1412.02         1306.94      1366.94      1417.89      1425.23       1399.46      1289.95      1351.31     1463.07 508. %/0AY          0.02534                    -0.01614                    0.00517                   -0.01252

i

                                                                                                                               ' TE!!!1ESSEE VALLEY' AUTHORITY SQ 1SQS2-0080 Rev.'2 SHEET'To                   OF TT BEST ESTIMATE EVALUATIO!1 OF ICE ~~

CONDENSER BASKET WEIGHTS.FOR PREPARED /DATE l-7 us/9r SEQUOYAH, UNIT 1,' CYCLE 4 CHECKED /DATE u-J uf/p, 3

                                                                .---------------------------------------------- SEQUOYAH                                                                             ------------------ -- UNIT l'                  l Tablo 4:                                                                                                                                                                           ;

Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons (continued) ~~

                                                                                                                                                                                                                                                   }

9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 . 12/31/83 3/30/84  !

                                                                       'RI R9                            GRI-R9        GRI-R9          GR1-R9 4/22/85 8/31/88 545Kf1. ' !:sf                                                                                                                   GR2-R9'           GR1-R9           ' GRl R9                                               {

1239 1261 GR1-R 9. GRI-R9 , 1261 1270 1243

                                                                                             !?C2                                                                                       1149'           1150-         1503           1240-1380          1380            "1423                1219              1266 1377                 1487                                                                                  1389          1556          1446 1487              1296
  • q 1559 1303 12914 1523 1543 1541 1538 1543 1563 1524 1604 1073 le t's 1038
                                                                                                                -1508           1508 -                                                                                              1636 1443              '1602.,             1580            1601 1434                                                                                                                     1117           1497 1473         1473              1403             1495              1418             1497
                                                                                                                                                                                                                                                   )

1559 '1476 999 1354 1476 1563 '1452 1596 1367" 1502- 1387 1387

                                                                                                                                                                                                                   .~ 1345 .     '1512 1401               1417              1551             1515          1473           1337 1536               1462              1527 g

1379 1517 1444' 1554' 1344' 1475 1476 j 1342 1540

                                                                                                                                                                                 - 1357 1364 I

I i

                                  .                                                                                                                                                                                                                i l
                                                                                                                                                                                                                                                -i
                                                                                                                                                                                                                                            ~

l q

                                                                                                                                                                                                                                                   \

i i AVG VEIGHT 1431.25 1439.38 1439.38 1434.20 1441.44 SID. DEV. 148.0643 1410.69 1402.22 91.240G 91.2406 1343.30 1445.00 101.0927 131.9442 ) 8 Cr BA5Kli5 8 156.3678 8 8 10 132.2798 215.9707. 127.7799 Z'5CCRE* 9 16 1.895'  !.895 9 =10 8 1.t95 - 1.833 1.86' s'5: C01r. vi. 1331.65 1.753 1.86 -1.233 1378.25 1378.25 1375.60 1.895 1359.64 1342.16~ 1320.21 1218.11 1359.39  ! 508. /0AY 0.G2777 .i 0.00083 0.00367 ~ 0.02035

                                                                                                                                                                                                          ~

k TE!!!!ESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET St OF 47 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATEJ7 (/> /W CONDENSER BASKET WEIGHTS FOR CHECKED / DATE biu./4rr _ 3 1 SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 4- UNIT _1 \

                                       ~~-----------------------_-------------------------.----.-~w--                                                                                 .

Evaluation of Historical At Power Sublimation Rates Table 4: Based Group-Row Comparisons (continued) , 9/10/81 1/25/82 1/25/32 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88 1 3R2-R1 GR2-R1 042-R1 CR2-R1 G;2-R1 GR2-R1 GR2-R1 GR2-R1 GR2-R1 SA!KET'4!!;mi 1419 1314 1314 1222 1359 1259 1195 1135 1203 1 1274 1357 1357 1236 1312 1246 1223 1181 1408 1476 1363 1363 1282 1383 .1205 1257 , 1319 1525 , 1433 last 1441 1445 1295 1322 1230 1334 1226.5 1450 1425 1425 1390 1368 1191 1312 1133 1533  ; 1412 1437 1437 1464 1383 I260 1229 1184 '1269: 1359 1339 1339 1310 1325 1427 1337 1385 .1292 1414 1445 1445 1326 1321 1332 1339  !!63 1217.5 1280- 1343 1103 1090 J 1450 1261 929 1 1252 972 1169 1127 1146 949 q 1085  ! 1079 I 1040 1148 1013 1349 1355 1344 947 1062 999 1 AVG k[lcar 1404.63 1333.13 1390.13 1334.38 1343.25 1297.20 1270.73 1140.38 1307.11 STO Civ. 62.6234 12.4471 52.4471 90.9C64 34.1290 86.6420 52.9398 137.5840 151.1892 8 U BA5KETS 8 8 8 8 8 10 11 26 9 I'!CO2E 1.695 1.E95 1.895 1.235 1.895 1.833 1.812 1.708 1.86 D CC'J . 'dI . 1362.67 1354 99 1354.99 1273.47 1320.38 1246.98 1241.80 1094.30 1213.37 ILB. %/CAV 0.00447 0.02004 0.015B8 0.03126 . e e 4

i TE11NESSEE VALLEY AUTHORITY st0 SQNSQS2-0080 Rev. 2 - SHEET U OF- 97 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATEl-T U Vs

  • CONDENSER BASKET WEIGHTS FOR CllECKED/DATE a~d ur/es SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH _- UNIT 1 Table 4: Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons (continued) -

3/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 E/31/88 GR2-R2 GR2-R2 GR2-R2 GR2-R2 GR2-R2 GR2-R2 GR2-R2 GR2-R2 GR2-R 2 EA5(ET Wi! NT 1255 1407 1407 1290 1246 1254 1232 1128 1263, 1278 1435 1435 12B4 1344 1258 1246 1165 1014 1502 1494 1494 1488 1496 1376 1250 ' 1145 1300 1414 1467 1467 1468 1436 1281 1247 1225 1370-1389 1451 1451 1355 1305 1222 1292 1250 1370 1410 1415 1415 1404 1348 1233 1346 1465 1317 1392 1424 1424 1485 1280 1355 1239 1255 1614 1460 1439 1439 1326 1306 1284 1249 1305 1387 1225 1286 1312 1387 1242 1196 1184 i 1227 1158 l 1242 1266 l 1166 1270 1246 1225 1 1125 ] 1270 1097 1118 1097 l 1304 I 1207 ) 1217 j

             ,                                                                                                                                           1369                l 1143                I 1165 1173 1326 1212
                          .                                                                                                                              1275 1222 1172 1077 l

1201 1 1171 1310 4 J3 Vf!GHT 1391.63 1441.50 1441.5G 1387.50 1345.13 1273.00 1247.43 1217.26 1335.78 ID 0(V. 76.8591 28,6456 28 C456 85.7038 83.0137 53.3021 42.2770 S4.9264 156.3120 8 CT 8A5KIIS 8 8 8 8 l 8 10 14' 35 9 I ( 2-5CCRE 1.895 1.295 1.895 1.895 1.895 1.833 1.771 1.645 1.66 55% C0'.F. WI. 1340.13 1422.31 1422.31 1330.08 1289.51 1242.10 1227.42 1193.64 1238.86

     $U8. /Cu               0.04867                     0.02807                     0.01050                                              0,00724 m__,__ , , _ _ _ _ . - _ _ _ _ _

TE11NESSEE VALLEY AUT!!ORITY SQtJSQS2-0080 Rev. 2. . SHEET 5 3 -. OF-d '7 ' BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE 4. &#87 CONDENSER. BASKET WEIGHTS FOR. CHECKED /DATE o.pu.rApp SEQUOYAH, UNIT 1, CYCLE'4 SEQUOYAH _____ _ _ __ __ ____ ___________________ __ ________,_f_,y_ NIT.1 Table 41 Evaluation of^ Historical-At-Power Sublimation R'aSes Based Group-Row Comparisons (continued) ~~ 9/19/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 '4/22/85 8/31/88 - GR2-R4 GR2-R4 GR2-R4 G42-R4 GR2.R4 GR2-R4 GR2-R4 GR2-R4 GR2-R4

                      !A5Kli'.113ni                                                                                                                                       1448          1477          1477         1311-1461          1410              1386
  • 1389 1476 1392 1417 1417 1344 1447 1406 1352 1320 1481 1506 1440 1440 1455 1492 , 1373 ,1392, 1373 1479 1404 1459 1459 1445 1492.

1376 1255 '1270 1229 1431 1461 1461 1426 1456 1458 1398 :1342: 1229 1470 1497 '1497 1470. 1420 1375 1323 1586 1278 1435 1457 1457 1418 1421 1378 1301 1313 1288' 1484 1445 1445 1466 1462 1388 1375 1363 1280 1383 1325- 1325 1284. 1447 1368 1339 1363 1405. 1369 1415 1322 1436 1343, -1311 1323 1376' 1352 1346 1414 .1332- 1312

                                                                                                                                                                                                                                                                             .1355'           1298-1328          1382' 1422          1301 l
            /VG VElGHT                                                                                                                                1446.25                      1456.63'     1450.63       1416.88       1456.38         1401.79'
l. STD CCVJ 39.0046 1348.92 1360.88 1333.59 24.0591 24.0591 58.6574 27.3962 l, 28.5608 42.0961 69.4387 79.B186 f 0F EA! KITS 8 8 8 8 8
j. 1 5C04[ 1.835 14 12 17 17 1.295 1.895 1.895 1.895

(, 1.771 1.796 1.746 1.746 95% CONF. wi. 1420.12 1440.51 1440.51 '1377.58 1438.02 1388.27 i 1327.09 1331.48 1299.79 508. 1/ CAT )- 0.01139 0.01891 0.00989 .-0.00087

                                                                                                                                                                          .O

TENNESSEE VALLEY ~ AUTHORITY. Ic SQNSQS2-0080 Rev. 2 - SHEET f4 OF 97 .I.i BEST. ESTIMATE EVALUATION OF ICE PREPARED /DATELT' U_yd f CONDENSER BASKET WEIGHTS FOR CHECKED /DATE ,.r dt/c/h l SEQUOYAH, UNIT.1, CYCLE 4 SEQUOYAH i--UNIT 1 l Table <. Evaluation of: Historical.At Power Sublimation Rates: ~ Based. Group-Row Comparisons (continued) .. 9/19/81 1/25/E2- 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88 , 3R2-R6' GR2-46 GR2-R6 GR2-R6 GR2-R6 GR2-R6 'GR2-R6 GR2-R6- GR2-RS EASKIT VE!CHT 1480 1499 1499. 1403 1503 1435 1366i 1372 1396 1464 1506 1506 1379 1481 1460 1426' 1484- 1384. .;

                                                                                                                                                 .1436            1505-        1370L                     ;

1470 1511 1511 1505 1499 1453 1500 1463 1463 1444 1523 1486 1460- 1529- 1393 > 1429 .1513 '1513 1480 1530 1493 1396- 1445 1398 1520 1520 1520 1505 1505 1488 '1460 '1389 - '1418-1464 - 1513 1513 1470 1474 1470 1455 '1514 1430 1526 1505 1505 1480 1518 .1438 1422' ' 1457 . 1392 1479 1473 1404 1434 1467 -) 1485 1501 1411- 1402 .'1428 1 1488 1491 1435 1526 -1428 i 1456 1486 1444 1386 1449 1490 1436 1465 1420' 1469-1511 1439 1382 1462' 1444 1462 1492: 1445 1656- 1437 1432 1395. 1 1470 1465 1452 1448 1377 1471 1474 1418 1413 1457 1469 1415  ;; 1457- 1400- ] 1462 1399

                    ~                                                                                     ,

1462 1464 l 1390 1432 1497 . 1472 l

                                                                                                                                                                                                      'I
 -.o DIGHT            1486.92        1503.75       150).75        1458.25       1504.13              1472.93                                 1429.93         1455.00       1426.77 STO. OCV .           19.7799        17.6372       17.6372       46.2779        19.5991              25.0091                                 28.2256         57.1647- 30.7094~                          l
 # 0F CA5Kt15                13              8            8.            8                      8             14                                         14           32-          26                    I 2 5CCRI                1.782           1.595         1.895         1.895         1.895                ~ 1.771                                    1.771          1.645.       1.708                     l 955 CONr. VT .       1477.15        1491.93       1491.93       1427.24        1490.59               1461.09                                1416.57         1438.38       1416.48            .-        l l

5U8. 7./0AY -0.00794 0.01877 0.00573 0.00405 .

                                                                                                                                                                                             .          )

i i

                         's                                                                                                          -

TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 - SHEET f5' OF- 17 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE W U3/87 CONDENSER BASKET WEIGHTS FOR CHECKED /DATE :.x:' u'/sv l SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAli_- ._ UNIT 1 Table 4: Evaluation of Historical At Power Sublimation ' Rat $es Based Group-Row Comparisons (continued) ~~ l 9/!9/81 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88

  • G72 45 G42-RS GR248 GR2-RS GR2-R8 GR2-R8 GR2-R8 GR2-R8 GR2-R8
                                      !a5Kti k!!Gn1               1500         1550         1550         1428 1368          1520           1390
  • 1536 1423 1528 1548 1548 1508 1491 1507 1457 1536 1666 1520 1525 1525 1491 1459 ,

1457 1473, 1497 1532 1540 1545 1545 1444 1376 1510 1411 1452 1430 1490 1539 1539 1525 1469 1476 1428 1515 1435 1496 1455 1455 1450 1475, 1409 1445' 1501 1455-1503 1550 1550 1535 1504 1462 1448 1482 1469 1479 1495 1495 1566 1459 1427 1421 1562 1477 1416 1479 1389 1367 1497 1487 1507 1449 1436 1392 1494 1222 1530 1393 1517 1487 1570 MG LElGHI 1495.73 1525 BB 1525 88 1493.38 1441.88 1455.64

                        '. !'s . CC L                                                                                                           1442.82      1489.36     1482.60 32.2048      34.161)      34.1611       49.0168      51.3710        83.0039         41.4821      59.6820 i Of BA5r.t T5                               11            B 75.4942 B            B               8             11            Il          14            10 2 SCORE                                  1,812         1.895        1.E95        1.895           1.895        1.812           1.812 95% CONF. wi.                                                                                                                             1.771       1.833 1478.10       1502.99      1502.99       1460.53                                                                           '

1407.46 1410 79 1420.15 1461.11 1438.84 5U8. 1/0AY 0.01336 0.01223 -0.00057 0.00759

                                                                                                -                                                                           I i
 .                                                         TENNESSEE VALLEX AUTHORITY                                                                                       ,

t I SQNSQS2-0080 Rev. 2 . SHEET W OF  ? - BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE L 7 # 3/ // f CONDENSER BASKET WEIGHTS FOR CHECKED /DATE u-d 4./f/s5  ; SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH.-- UNIT 1  ;

                      -------------------------------- .---------- ------                                                ------------                                       8 Table 4:            Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons (continued)                                                                           ~~

l 1

                                                                                                                                                                          .i 3/19/81         1/25/S2      1/25/82      9/13/82      12/16/82      12/31/83      3/30/84      4/22/85 8/31/88*

GR2-R9 GR2-R9 GR2-R9 GR2-R9 GR2-R9 GR2-R9 GR2-R9 GR2-R9 GR2-R9 a SASKET b(1CHT 1544 1614 1614 1402 1428 1387 1388* 1415 1499 j 1220 1578 1578 1529 1570 1604 1592 1382 1402 i 1466 1557 1557 1483 1449 1432 1550 1559 1358 1361 1375 1375 1449 1350 1512 1563 1490 1336 1408 1467 1467 1495 1443 1351 1335 1245 1428 , 1306 1301 1301 1445 1271 1310 1428 1254 1129 I 1364 1385 1385 1482 1292 1439 1243 1275 1351

426 1491 1491 1536 1543 1262 1225 1332 1402 1195 1286 1577 i 1237 1260 I I

1483 i 1 I i l a l 1 i AVG LE!GHT 1385.28 1471.00 1471.00 1477.E3 1418.25 1382.91 1387.00 1392.11 1353,13 I 510. OIV. 98.9277 110.3284 110.3384 44.7212 108.5775 125.9718 140.3432 127.6170 107.8470 t Cr EA$ RET 5. 8 8 8 8 8 11 10 9 8 2 5CCRI 1.895 1.835 1.e95 1.895 1.895 1.812 1.833 1.E6 1.895 552 COW . VI . 1320.60 1397.08 1397.08 1447.66 ' 1345.50 1314.09 1305.65~ 1312.99 1290.87 l 508. *./CAf -0.04596 -0.015C8 0.00667 0.00148 1 1

   's
 .                                                       TE!!!1ESSEE VALLEY AUTl!ORITY SQllSQS2-0080 Rev. 2                   .

SHEET 67 OF 97 ,I DEST ESTIMATE EVALUATIOli OF ICE PREPARED /DATEJJ U3/M COllDEllSER BASKET WEIGHTS FOR CHECKED /DATE);,~;' 44-/n i SEQUOYAH, UllIT 1, CYCLE 4

                    -------------------- ..----------------------- SEQUOYAH~/-                                             U141T 1
                                                                                                           ---------:---=-----

i Table 4: Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons (continued) i

                     "!9/81        1/25/52      1/25/22      9/13/82                                                                       i 12/16/82     12f31/83      3/30/84      4/22/85 8/31/88'         I M3-Al         'R3-R1       543-R1       GR3-R1       GR3-R1       GR3-R1        GR3-R1 SASA[1 k!!GMT                                                                                               GR3-R1     GR?-R1 1306         1313         1313
  • 1153 1225 1012 1440 1306 1369 1288 1359 1319 1261 1244 1026 1345 1332 1402 1307 1289 l 1307 1380 1229 1126 1501 1387 1264 1311 1357  !

1357 1238 1288 '

                                                                                           ' 1286           1550'      1403       1262 1318         1313         1313         1332         1252          1234         1462       1260 f

1402 1341 1341 l 1341 1317 1370 1137 1472 1231- 1306 1348 1347 1347 12E2- 1306 1113 1547 1012 1382 l 1308 1297 1297 1 1176 1226 1003 1371 1346 1437  ! 964 1385' I 1100 1374 1192 1486 1109 1404 1122 746 1038 1084 f 1145 1226 1271 i 1079 1147 1118 1033 1043 1026 i 1080 i 1019 JB9 995 883 876 5 959 959 976 1224 1249 1275 1356 t 1416 5 1245 8 1263 i

                                                                                                                                          ~

l TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 SHEET s" 8 OF ' 'f 7 BEST ESTIMATE EVALUIsTION OF ICE - } PREPARED /DATE ;-7 U3/ sv CONDENSER BASKET WEIGHTS FOR i SEQUOYAH,. UNIT 1, CYCLE 4 CHECKED /DATE u/ .c/res l SEQUOYAH /-- UNIT 1 i l Table 4: Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons (continued) 1286 1074

                                                                                                                                                                                                 ~

1D74 1204 1035 , 1032 1113 1137 1115 j 997 J 811

                           ' '.'S '. ! ! Ghi                                         1352.03  1329.25  1329.2$   1264.88 1275,00    1103.45 51D. CEV.                                                  38.5781   24.4116 1401.00 1292.50 1304.92 24.4116    77.1241 48.37E5  125.4708 i CF 8ASK115                                                      8        8 74.0704 128.1372 181.4132                                      ;

8 8 8 Z-SCGI 51 8 8 - 13 1.895 1.895 1.895 1.895 1.895 1.645 1.895 55% C^*# 1326.78 1.895 1.782 1312.89 1312.E9 1213.20 1242.59 1074.55 1410.97 1206.65 1215.26 1

                                                    .af                             0.00830           0.03287            0.03B04                   0.03811 I

1 I 4 4 1

  • i
                                                                                                                                                                                                                 -I
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                                                                                                                                                                                                                   )

9 l m.__-w-_________ _ _ - - - - - _ _ - _ - _ . _ _ _ _ - - . - _ _ - - - _ - _

i s TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET 51 OF 91 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE L7 5/g/ar  ! CONDENSER BASKET WEIGHT 3 FOR CHECKED / DATE faw' . Ws 9  ! SEQUOYAH, UNIT 1, CYCLE 4 _________________________________________________QUOYAH SE f- UNIT 1 I Table 4: Evaluation of Historical At Power Sublimation Rates i Based Group-Row Comparisons (continued)

                                                                                                                                                                         )

3/19/61 1/25/ d2 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88 GR5-42 GR3 R2 GR3 R2 GR3-R2 1 GR3-R2 GR3-R2 GR3-R2 GR3-R2 CASKET .IlGHT 1360 GR3-R2  ! 1373 1373 1265 1214 1064 1550 ' 1419 1388 1446 1367 1367 1296 1343 1108 1451 1464 1327 1414 1377 1377 1392 1265 1223 1521 1374 1842 1330 1345 1345 12/1 1250 ' 1281 1550' 13S3 1387 1446 1431 1431 1285 1285 1199 1370 1387 1392 '1314 1417 1417 1257 1319 1167 1533 1476 1430 1345 1445 1445 1350 1326 1133 1541 1410 1294 1226 1343 1343 1193 1287 1097 1486 1499 1464 1091 1255 1112 1355 1252 1445 1275 1416 1191 1315 1191

       .a                                                                                         1204 1081 1067 1046
                                                                                                 !!36 1240 1267 1312 1246 1280 1204 1139 l

' I.126 1094 1158 1238 1203 1236 1160 1114 1131 1124

                                                                                               !!34
                                                                                               !!05
                                                                                               !?04 1174
                                 ~

l

    's                                                                                      --
 .,                                                   TENNESSEE VALLEY AUTHORITY i

SQNSQS2-0080 Rev. 2 . SHEET 60 OF 9 ~1 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE t-T in/8 7 CONDENSER BASKET WEIGHTS FOR CHECKED /DATEt W U_r49 SEQUOYAH, UNIT 1, CYCLE 4

                - - - - - - - - - - - - - - - - - - - - - , - - - - - - - - - - - - - - - - -- -- -- - S    E QU O Y A H '- U N I T 1 Table 4:

Evaluation of Historical At Power Sublimation Rates _ Based Group-Row Comparisons (continued) 1009 I

                                                                                                  '028 1049
                                                                                                                                            )

1052 j 2087

  • I
                                                                                                 !!50 1283                                       j 1315                                       I 1345 1361 1297 1219                                        4
                                                                                                !!44 1110
                                                            .                                   1108 1218 1286 1151 1218
                                                                                                                                            ]

1246 1131 1011 1114 1189 1159 1149 1135 1143 1092 973 847 V 1 HI 1394 50 1387.25 1287.25 1301.13 1266.13 1161.77 1500.25 1426.50

                     /. 08          8.9056      38.9056                                                                     1356 54 63.1991       42.8634       92,1871 62.9143 47.2833      60.7558 2"L. ,-          ,J ;'. ;

1361.18 "a ud ud ud5 ud ma 1.J' 1361.18 1258.78 1257.41 1143.78 185B.10 1394.82 1326.51 SLB. *uCAy 0,00377 0.03257 0.025B2 0.01142

                                                                                                                                          ~

l 1 l

1 TENNESSEE VALLEY AUTHORITY  ! SQNSQS2-0080 Rev. 2 . SHEET Gi OF 47 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE l T 6/2/ B9-CONDENSER BASKET WEIGHTS FOR CHECKED /DATE h/ ;/.r-/sp SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH F. U, NIT 1 4 q Table 4: Evaluation of Historical At Power Sublimation Rates  ! Based Group-Row Comparisons (continued) '- 9/19/61 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88* OR3 R4 343-34 GR3-R4 GR3-R4 GR3-R4 GR3-R4 GR3-R4 GR3-R4 GR3-R4

        *1'r" '.IlGH1            1448          1383          1383         1345 1406            1328          1310.      1227            1387 1487          1445          1445         1408            1414           1338           1380       1225           1288 1447         1423           1423         1388            1386           1373           1341       1306           1304  l 1437         1437          1437          1428            1411   '
                                                                                                     ' 1268            1281'       1311           1428  j 1488         .1471         1871         1359            1441            1302          1270       1217            1249. 1 1460         1446          1446          1395           1439            1358          1372       1290            1253 1412         1449          1449          1254           1456            1323          1414       1239            1377 1342         1415          1415         1388            1409            1278          1241       1307            1316 1409                                                     1359            1343 1346 1394 1356 1429 1319 1492 l

1 I l l i I 1 l AVG k'EIGHT 1440.13 1433.03 1433.03 1372.36 1420.25 1321.00 510. *EV. 46,9390 1326.13 1275.67 1352.23 20.5918 26.5918 44.8492 22.9518 36.7112 r.0,5249 50.0275 73.1405 8 OF EA5K[15 8 g g gg g g g I g l3 l 5CCRE 1.e95 1 895  ! 1 t195 1.812 1.895 95% CCNF. WI. 1.895 1.895 1.86 1 782 l 1408.08 1415.81 1415.81 1347.06 1404.87- 1296.40 1285.57 1244.05 1316.c8 508. %/0 u -0 00402 0.02078 0.02206 0.00838 l 1 l I

                                                                                                                                                                          -l
                                                                                               .-                                                                            1 TENNESSEE VALLEY AUTHORITY SQNSQS2-0080              Rev. 2         .

SHEET 62 OF 47 BEST ESTIMATE EVALUATION OF ICE ) PREPARED /DATE J r th /F f j CONDENSER BASKET WEIGHTS FOR CHECKED /DATE w /A&/e, J SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH /-- UNIT 1 1 Table 4: Evaluation of Historical At Power Sublimation Rates. Based Group-Row Comparisons (continued) ~~ 1 l - 9/19/81 1/25/52 1/25/82 9/13/82 12/16/82 12/31/83 3/30/84 4/22/85 8/31/88 - GR3 R6 GR3-R6 CR3 R6 CR3-R6 GR3-R6 GR3-R6 GR3-R6 GR3-R6 GR3-R6 -

  • nti LEIGHI 1494 1495 1495 1408 1503 1413 1342 ' 1382 1362  !

1459 1443 1443 1448 1481 1433 1383 1407 1298 1490 l 1523 1523 1417 1482 1468 1427 1485 1344 1 1506 1509 1509 1456 1480 1469 1384 1357 1374 1466 1451 1451 1458 1477 1473 1434 1284 -1381-1520 1533 1533 1488 1592 1428 1441 1405 1385 ( 1488 1479 1479 1406 1516 1473 1422 1330 1383 i 1496 1375 1375 1492 1537 1453 1412 1305 1387 1480 1412 1448 1364 1417 1375 1392 1465 1468 1394 1519 1376 1380 1463 1453 1447 1454 1343 1396 1459 1443 1247 1370 1252 1536 1482 1388 ( 1510 1528 1368  ! 1420 1418 1432 1273 1483 1458 1370 1513 1418 1282 1483 1409 1448 1326 1407 1284

             .                                                                                     1441                                                        1495 1443                                                        1422 1348 1313                                                                         ;

l j l AVG WE!GHT 1447.62 1476.00 1476.00 1d31.28 1508.50 1447.00 1391.42 1395.00 51 D . I,[ V . 1380.82 74.5425 51.8060 $1.6680 69.2649 39.8820 46.3737 55.7339 73.4466 47.9887 l 8 0F BAkt15 13 8 8 18 8 24 12  !! 22 5 2 5CCRE 1.782 1.635 1.295 1.74 1.895 1.714 1.796 1.812 1.721 95% CC'.T wi 1410.77 1441.25 1441.25 1402.87 1481.78 1430.78 1362.52 1354.87 1363.21

                                                                                                                                                                        ~
    $UB. %/CAV          -0.01714                     0,01153                   0.00983                      0.00148
                                -~
                              ~4
  • TEtHJESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 .

SHEET s3 'OF 11

                                               ~ BEST ESTIMATE EVALUATION OF ICE                                                   PREPARED /DATE l-T 't/3/>9 CONDENSER BASKET WEIGHTS.FOR                                                          CHECKED /DATE unTr4 /e 9 SEQUOYAH, UNIT 1, CYCLE 4                                                                     SEQUOYAH h-UNIT 1 Table 4:           Evaluation of Historical At Power Sublimation Rates Based Group-Row Comparisons (continued)                                                                --

Fi!9/BI 1/25/c2 1/25/82 9/13/82 12/16/82 12/31/83- 3/30/84 4/22/85 8/31/88 , 043-RB 543 48 SR3-R8- GR3-R8 GR3-R8 GR3-R8' GR3-R8 GR3-R8 GR3-R8 , BA5AIT LElGHT 1458' 1435 1435 1346 1367 1306 1309' 1452 1458-1480 1459 1459 1389 1435 1396- 1357 1502 1294 1474 1521 1521 1489 1418 1382- 1395, 1365 1250 1467 1525 1525- 1429 1500 1446= 1374 1483 1217 1521 '1512 1512 1467 1470 1468 :1496 1373 1309 < 1528 1541 1541 1452 1495 1440 1473 1453 ' 1264-1470 1507 1507 1465 1531 1502 1508 1494 1229 1290 1331 1331 1474 1371 1469 1521 1108 -1224 1400 1321 1439 1436 1281-1340 1515 1495 1487' 1544 1410. 1425 1403 1354 1450 1475 1555 1513 1506 1431 1462 1290 1465 1442 -l 1461 1272-1 1 j i l 1 l AVG WE!CHT 1452.80 1478.88 1478.88 1425.78 1448.38 1438.69 1427.33 1403.75' 1371.11 510. Otv. 59.1379 69.5258 69.5258 60.1597 60.7617 71.0302 70.8729 130.2456~ 113.4739-  ! e CT BA5KI15 10 8 8 9 8 16 12 8 19 Za5Ctat 1.833 1.295 1.895 1.86 1.895 1.753 1.796 1.895 1.734 I

                       . 95% CONr. WI,                 1418.52       1432.29

. 1432.29 1388.48 '1407.67 1407.56 1390.59' 1316.49 .1325.96 - SUB. 1/ cat -0.c0771 0.01324 0.00002 0.01402 l I

                                                                                                                              ~ ~ ~ ~
                                                                                                                       .7
   . - _ _ - . - - - - - . - . - - - _ - = - - . .,.                                                        -
                                                     ?

[h , l l E l i J 1 i j l i. 1

      - _ - - - _ - - _ _ - - - - . -                ___. _ . . - . - _ _ - - _ - _ _ _-    . . - _ . - - -   - -.        J

t

 <*, rio                                                                         TENNESSEE VALLEY AUTHORITY SONSQS2-0080               Rev. 2                                    SHEET 44             OF77 BEST ESTIMATE EVALUATION OF ICE                                             PREPARED /DATE 4-7 f/3/g 7 '

CONDENSER BASKET WEIGHTS FOR CHECKED /DATE us'u dM SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH 4. UNIT 1 Table 4: Evaluation of Historica] At Power Sublimation Rat [es, Based Group-Row Comparisons (continued) 9/13s61 1/25/82 1/25/82 9/13/82 12/16/82 12/31/83  :/30/84 4/22/85 8/31/88 ER3 R9 GR3-R9 GR3-R9 GR3-R9 GR3-R9 GR3-R9 GR3-R9 GR3-R9 GR3-R9 2ASKli '.E!5HT 1414 1267 1357 1321 1396 1164 1184 1271 P98 1330 1357 1357 1355 1376 1382 1291 1398 1259 1402 1501 1501 1419 1433 1238 1423

  • 1328 1475 1444 1559 1559 1432 1558 1368 1524 1404 1229 1508 1541 1541 1505 1321 1360 1513 1265 1178 1532 1549 1549 1490 1484 1503 1546 1504 1302 1496 1503 1503 1225 1472 1399 1314 1461 '1294 1476 1243 1243 1309 1516 1420 1514 1500 1530 1023 1493 1500 1339 1372 1450 1523 1503 1457 1350 1077 4VG VEIGHT 1450.25 1452.50 1452.50 1292.43 1418.63 1384.93 1401.88 510. DEV. C6.4508 115.7C28 115.7C28 1352.00 1336.15 99.1029 85.0478 140.3745 8 0F BASK [15 8 8 8 128.8936 153.7025 150.4055 7 8 14 8 2 5CCR[ 1.895 9 13 1.e95 1.895 1.943 1.895 95% CCV . WI. 1.771 1.E95 1.86 1.782 1405.73 1374.98 1374.98 1319.00 1361.04 1318.49 1315.52 1256.70 1201.82 l 5US. %/ CAY 0.01730 0.0174s 0.00900 0.01177

TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 - SHEET 67 OF 'i 'L BEST ESTIMATE EVisLUATION OF ICE CONDENSER BASKET WEIGHTS FOR PREPARED /DATE L7 t/9/Af SEQUOYAH, UNIT 1, CYCLE 4 CHECKED /DATE A / up4,

                                                      -----------------------------                   -----------------SEQUOYAH         "- UNIT i Table 5:

Evaluation of Historical Nonpower Sublimation Rates Based on Bay and Group-Row Comparisons (continued) 9/7/85 6/15/83 9/7/85 6/15/88 BAY 3 6AY 3 CR). ROW 4 CR1* ROW 4 1468.0 1477.0 1308.0 125'.5 J

  • 1381.0 1242.0 1278.0 1194.5 1275.0 1332.0 1275.0 1203.5 1400.0 1203.5 .

1325.0 1242.5 1471.0 1453.0 1284.0 1288.5 1338.0 1383.5 1345.0 1313.5 ~ ' 1349.0 1208.5 1254.0 1292.5 1303.0 1288.5 AVG LEICHT 1388.8 1348.5 1302.3 STD. OfV. 1253.9 75.825 110.722 32.703 44.295 s CF BASKETS 6.0 6.0 9.0 9.0 2 SCORE 2.015 2.015 1.860 95% CCur. WT. 1.860 1326.5 1257.4 1282.1 1226.5 SUB. %/0AY 0.00500 0.00416 I l e STD. MV .

                                                                                                                                                    )

I

i

 .                                              TE11NESSEE VALLEY AUTHORITY SQNSQS2-0080       Rev. 2                       SHEET 68 BEST ESTIMATE EVALUATION OF ICE                                                OF_ 97 CONDENSER BASKET WEIGHTS FOR                             PREPARED /DATEW U3/n SEQUOYAH, UNIT 1, CYCLE 4                                 _ CHECKED /DATE u W kr45

________SEQ Table 5: Evaluation of Historical Nonpower Sublimation Rates Based on Bay and Group-Row Comparisons (continued) 9/7/25 6/15/88 9/7/85 6/15/88 . BAY 4 BAY 4 CR1 Row 6 CR1 ROW 6 1479.0 1392.0 1329.0 1272.0

  • 1482.0 1391.5 1403.0 1?45.0 1325.0 1550.5 1400.0 1196.0 1427.0 1521.0 1427.0 l

1197.0 1524.0 1377.0 1417.0 1 1297.0 1571.0 1241.5 1396.0 1 1350.5 1425.0 1337.0 1450.0 13S2.0 1440.0 1355.0 1396.0 1339.0 13BS.O 1316.0 1241.5 1283.0 1383.5 1392.0 1616.5 1407.5 1413.5 1380.0 1362.0 1360.0 1391.5

           .                                                    1391.0 1310.5 AVG WEICHT         1468.0      1412.3           1406.5 STD. CEV.                                                  1334.1 85.079     111.515           32.420      66.105 0 CF SAsttts          6.0         6.0 2 SCCRE 11.0        24.0 2.015       2.015            1.812       1.714 95% CCNF. WT. 1398.0      \120.5           13ES.7      1311.0
  • SUS. %/0AY 0.00533 0.00535
                                               ^4
                                                                                                                                                                                  ~
             -.         ,                                                                                                                TENNESSEE VALLEY' AUTHORITY
                                                                                                                            'SQNSQS2-0080 Rev. 2              .

SHEET 6i OF 4"7 DEST ESTIMATE EVALUATION OF ICE CONDENSER BASKET WEIGHTS FOR . PREPARED /DATE I-7 t/3/M SEQUOYAH, UNIT 1, CYCLE 4 CHECKED /DATE kst&#,

                                                                                                           --------------------------------------- ------ SEQUOYAH                     4 .-UNIT-1 Table 5:

Evaluation of Historical Nonpower Sublimation Rates _ Based on Bay and Group-Row Comparisons (continued) 9/7/85 6/15/88 9/7/85 6/15/88 BAT 5 BAY 5 CR). ROW 8 CR1 ROW 8 1345.0 1208.5 1380.0 1304.0

  • 1367.0 1528.0 1341.0 1377.0 1417.0 1245.0 '1468.0- 1345.0 1537.0 1504.5 1524.0; 1295.0 1284.0 1416.5 1507.0 1350.0 1487.0 1281.5 1472.0 1229.0 .-

1478.0 1199.5  ! 1531.0 1453.0 1479.0 1550.5 , 1429.0 1504.5 1414.5

                                                                                                                                                          '1434.0 1457.0 1391.0 1

1432.0 1421.0 AVG WilCHT 1401.2 1364.0 1460.9 13S4.8 570. OtV. 85.871 137.506 i

                                               # or nser***

61.240 94.723 6.0 6.0 10.0 16.0 2.015 2.015- 1.833 1.753'

                                                                                 .e.                 W1.        1330.5        1250.9          1425.4       1343.3 SUS. X/ DAY                                                     0.00575 0.00553 j
                                                                                                                                                                                                   . l
                                                                                                               ~

i

                                                                                                                                                                                                     'k l

l I

                                                                                                                                                                                                       \

s I i e e i

g. , TENNESSEELVALLEY AUTHORITY . SQNSQS2-0080 -Rev. 2. - SHEET ~70 OF 'l 7 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE,LT - th/A 1-CONDENSER BASKET. WEIGHTS.FOR. CHECKED /DATE b.~-f Uran SEQUOYAH, 3

                                             ~

UNIT-1, CYCLE 4' SEQUOYAH -/- _________________________________________________________ _(U_ HIT 1-Table 5: Evaluation of Historical Nonpower Sublimation Rates _ Based on Bay and Group-Row Coliparisons (continued). i 9/7/85 6/15/88' 9/7/85 6/15/88 l' BAY 6 BAY 6 CR1 ROW 9 CR1 ROW 9 1265.0 1256.0 1265.0 1077.0 . 1335.0 1407.5 1322.0 884.0 1396.0 1313.5 1471.0 1477.0 1453.0 1414.5

                                                                                                                            -q 1571.0      1521.0 1271.0      1352.0          1487.0-      1528.0                                                       1 1258.0 ,    1359.0          1497.0       1359.0   ,-                                                 I 1425.0                      1498.0      1363.0  ^                                                      j 1462.0                      1509.0. 1220.0 1345.0                      1382.0
                                                                                                                            '{

1399.0 ] 1486.0 1472.0-I

                       '1386.0 1450.0 1473.0                                                                                             'f 1161.0 1242.0 1403.0 "460.0 1478.0 1497.0 1184.0 1349.0 1440.0 1476.0 1531.0                                                                                                '

l 1498.0

  • l 1

AVG WEIGHT 1392.4 1350.4 1444.7 1303.6 510. DEV. 102.509 59.529 99.638 229.498

  • O OF EASKETS 27.0 6.0 9.0 B.0 Z SCORE 1.706 2.015 1.860 1.895 358.8 1301.4 1382.9 1149.9 -'

Luo. .., oat 0.00405 1 0.01619 i i

                                                                                                                             'I

s TEN 13ESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 - SHEET ~71 OF '17 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE LT 6h/e 1 CONDENSER BASKET WEIGHTS FOR CHECKED /DATE u ' e# h&/vr SEQUOYAH, UNIT 1, CYCLE 4 4 SE UNIT 1

                                          ---         -    ------ -------           ------ ------------ ----QUOYAH---------------

Table 5: Evaluation of. Historical Nonpower Sublimation Rates _ ' Based on Bay and Group-Row Comparisons (continued) 9/7/85 6/15/88 9/7/85 6/15/88 BAr 7 BAY 7 CR2 ROW 1 CR2-ROW 1 1254.0 1434.0 1269.0 878.0 . 1 1396.0 1363.0 1318.0 1126.0 1350.0 1221.0 1409.0 981.0 1345.0 1288.5 1475.0 1073.0 1479.0 1208.0 1317.0 1240.0 1509.0 1413.5 1251.0 1204.0 ' 1516.0 1127.0 1262.0 1157.0 Avc VEICHT 1388.8 1321.3 1352.1 1098.3 STD. CEV. 94.054 96.B65 102.012 119.056 0 CF BASKETS 6.0 6.0 8.0 8.0 Z SCCRE 2.015 2.015 1.895 1.895 052 CCNF. V1. 1311.5 1241.7 1283.8 1018.5 SUB. %/ DAY 0.00511 0.01985

                            . ... ;                                                                                                             j I

e 1 l a m c:'a..a, n

s i TEll!!ESSEE VALLEY AUTHORITY SQMSQS2-0080 Rev. 2 - SHEET 72- OF 97" BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE l.7 ya/s/ CONDENSER BASKET WEIGHTS FOR SEQUOYAH, UNIT 1, CYCLE 4 CHECKED / DATE 'ud84-hp _____________________________________________SEQUOYAH 3- UNIT 1 Table 5: Evaluation of Historical Nonpower Sublimation Rates-Based on Bay and Group-Row Comparisons (continued) l 9/7/85 6/15/83 9/7/85 6/15/88 BAY 8 BAY 8 { CR2 ROW 2 GR2 ROW 2 1357.0 1292.5 I 1450.0 1214.0 , 1418.0 1351.0 1481.0 1285.0 1303.0 1380.0 1380.0 1296.0 - 1388.0 1444,0 1457.0 1371.5 1429.0 1457.0 1306.0 1328.5 1382.0. 1220.0 1336.0 " 1396.0 1326.0 1570.0 1324.0 l 1362.0 1342.0 1334.0 . 1404.0 i 1259.0 1327.0 1352.0 1360.0 1334.0 1450.0 1220.0 1359.0 1392.0 1425.0 1391.0

                                                                                                                                 \

1336.0 1391.0 1420.0 1432.0 780.0 I 1224.0 I 1282.0 1 1310.5 1389.0 1420.5 AVG WEIGHT 1379.5 1343.3 I STD. DEV. 1415.3 1309.5 45.540 131.239 8 0F BASYFf' 89.479 56.703

                                                           .0       26.0            8.0         12.0
                                                        .u15      1.708           1.895       1.796 1342.0      1299.3          1355.3     1280.1                               i I

500. %/ DAY 0.00306' O 00533 I l l l 1

l

   -                                                                           TEtitJESSEE VALLEY AUTHORITY i

SQtJSQS2-0080 Rev. 2 - SHEET 73 OF 'I 7  ! BEST ESTIMATE EVALUATIO!J OF ICE PREPARED /DATEL7 M/n CO!JDENSER BASKET WEIGHTS FOR j CHECKED /DATE u q uf/,pr i SEQUOYAH, UNIT 1, CYCLE 4 SE Table 5: Evaluation of Historical Nonpower Sublimation Rates-Based on Bay and Group-Row Comparisons (continued) 9/7/B5 6/15/B8 9/7/85 6/15/88 . BAY 9 BAY 9 CR2* ROW 4 CR2 ROW 4 1269.0 1110.5 1364.0 1110.5

  • 1364.0 1325.0 1268,0 j 1314.0 1427.0 1388.0 1320.0 1284.0 ,

1450.0 1423.0 1349.0 1295.0 1567.0 1422.0 1315.0 1279.0 1385.0 B78.0 1380.0 j 1272.5 < 1321.0 1246.0 1242.5 l 1381.0 1356.0 1287.5 1404.0 1377.0 l 1292.0 1221.0 1348.0 1312.0 1371.0 1293.0 1!80.0 1235.0 1403.0 1380.0 1365.0 1376.5 1424.0 1214.0 1375.0 1410.0 1508.0 1318.0 1426.0 1503.0 153B 0 MG VEICHT 1410.3 1357.1 1330.5 1267.5 510. CEV. 99.156 130.261 41.966 61.032 0 0F DASKETS - 6.0 26.0 8.0 13.0' 3*SCCRE 2.015 1.703 1.895 95% CONF W1. 1.782 1328.8 1313.4 1302,4 1237,3 SU8. %/ CAY 0.00111 0.00420 l

i TEN!1ESSEE VALLEY AUTHORITY-

t SQNSQS2-0080 .Rev. 2 -

SHEET 7 'r BEST ESTIMATE EVALUATION OF ICE OF 97 CONDENSER BASKET WEIGHTS FOR PREPARED /DATEJ 7 sh/91 SEQUOYAH, UNIT-1,-CYCLE 4 CHECKED /DATE udv.r/f, _ _ _ _ _ _ _ _UN _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___________________ _ _I T_.1_ _ _ S Table 5: Evaluation of Historical Nonpower: Sublimation.-Rath's  ; Based on Bay and Group-Row Comparisons (continued)'. '

         - 9/7/85        6/15/B8         9/7/85        6/15/88                .

BAY 10- BAY 10- CR2 row 6 CR2 ROW 6-1546.0 1267.5 1427.0 . 1388.0 1481.0 1282.0 1400.0 1380.5 1400.0 1386.0 1396.0 1371.0 * ,

                .'1578.0      1450.0         1470.0           1403.0 1318.0      1472.0         1454.0           1376.5' 1314.0-      1284.0'        1447.0          1410.0 1354.0         1395.0-         1426.0 1411.0          1456.0          1328.5 1458.0                          1368.0 1465.0 '                        1378.0 1394.0                          1405.0 1

1295.0 1401.0 1377.0 1427.0-1423.0 1445.0 14B4.0- 1418.0 1 14 73.0 1399.0 1368.0 1379.0 ' 1468.0 .1408.0 1126.0 1369.0 1399.0 1352.0 l , 1470.0 i 1381.0 ' 1474.0 i 1427.5

       .                    1285.0                          1414.0                                                              1  '

1339.5

1364.'J ,

1398.0 1332.0  ! 1461.0 1346.0 , 1323.0 1384.0 1389.0 1419.0' 1438.0 1399.0-1417.0 1377.0 1362.0 1306.0 1411.0 ' 1363.0 i i I

r \' . l 4 TE!111ESSEE VALLEY AUTHORITY { I SONSQS2-0080 Rev. 2 - SHEET 7 5' OF 'I ~l 1 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE L7 t/3/gf l CONDENSER BASKET WEIGHTS FOR CHECKED /DATE W '.&h , - i SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH -- UNIT 1 I 1 Table 5: Evaluation of Historical Nonpower Sublimation Rates Based on Bay and Group-Row Comparisons (continued) --  ! l 1399.0 ,

                                                                   '1423.0 1340.0                                  l
                                                                                                            \

AVG LEICHT 1439.5 1387.2 1430.6 1388.6 . 510. CEv. 113.419 88.287 30.303 ~ 30.352 8 0F BASKETS 6.0 26.0 8.0 41.0 l 3 SCORE 2.015 1.708 1.895 1.645 . 052 CONF WT. 1346.2 1357.6 1410.3 1380.8- i SUB. %/ DAY 0.00081 0.00201 ) 9/7/85 6/15/P.8 9/7/85 6/15/88 i BAY 11 BAY 11 CR2 Row 8 CR2 Row 8 l 1396.0 1308.0 1567.0 1422.0 49.0 1328.5 1546.0 1472.0 1320.0 1390.0 1546.0 1465.0 1531.0 1327.0 1457.0 1475.0 I 1380.0 1210.0 1516.0 1474.0 1546.0 1279.0 1521.0 1461.0 1304.0 1522.0 1327.0 1368.0 1455.0 1422.0 1421.0 1421.0

          .                             1272.5                      1416.0 1330.6                      1496.5 1378.0                      1369.0 1411.0                      1216.0 1405.0                      1205.0 1420.0                      1171.0
                         .              1355.0                      1285.0 1401.0                      1388.0 1465.0                      1413.0 1296.0                      1338.0 1399.0                      1300.0 1427.0                      1538.0 1493.0 981.0 1365.0 1445.0 1476.0 AVG VEICHT           1430.3         1356.3          1516 3      1384.5

TE1111ESSEE VALLEY AUTHORITY SQlJSQS2-0080 Rev. 2 - SHEET 76 OF 47 1 DEST ESTIMATE EVALUATIOlJ OF ICE PREPARED / DATE l-7 // 3/8 f CO!JDE!JSER DASKET WEIGHTS FOR CHECKED /DATE W t./r/99 SEQUOYAH, UlJIT 1, CYCLE 4 SEQUOYAH /-- U11IT 1  ; Table 5: Evaluation of Historical lionpower Sublimation Rates Based on Bay and Group-Row Comparisons (continued) --

     $10. CIV.           89.279       102.166          40.819      101.784         .

I

     # OF EA$r!TS             6.0         26.0             8.0        21.0 2 SCCRE                2.015        1.7CS           1.895       1.725
                                                                                                                 ~

95% CCNF. W1 1356.9 1322.0 1488.9 1346.2 SUD. %/ DAY 0.00247 0.00921 l l J 9/7/85 6/15/88 9/7/85 6/15/83 I BAf 12 BAY 12 GR2 ROW 9 CR2 ROW 9 I 1470.0 1344.0 1385.0 1292.0 1375.0 1418.0 1578.0 1394.0 1349.0 1450.0 1531.0 1218.0 1475.0 1422.0 1375.0 1318.0 1457.0 1329.0 1505.0 1405.0 1457.0 1399.0 1427.0 1220.0

                           'E          1411.0           1295.0       789.0 1408.0           1499.0      1020.0 1285.0 1369.0 1388.0 1311.0 1352.0 1395.0 1416.0 1073.0 1421.0 1326.0 1380.5 1419.0 1318.0 1411.0 1379.0 1328.0 1242.5 1371.5 AVC WEICHT            1430.5       1360.3          1449.4      1207.0 010. Civ.             54.162       76.703          94.696     203.293
      # OF CASKE15             6.0         26.0             8.0          8.0 2 5CCSE                2.015        1.708           1.895       1.895 95% CCNF. W1.         1385.9       1334.6          1385.9      1067.4 SUB. %/ CAY        0.00356                       0.02207
     ~                                                                                                                                                      ,
        '                                                                                                                                                 1 l,
   .                                               TEN!!ESSEE VALLEY AUTHORITY SQNSQS2-0080     Rev. 2           .

SHEET 7 '/ OF + '? BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE FT Ua/#9  ! CONDENSER BASKET WEIGHTS FOR ~ CHECKED /DATE un/ 2/r/pf SEQUOYAH, UllIT 1, CYCLE 4 f SE .j

                     ------- --- ------- . ------------------- ---- -QUOYAH               - - - - . - - - A.
                                                                                                          - - -UNIT
                                                                                                                . - - - -1                         -

Table'5: Evaluation of Historical Nonpower Sublimation Rates Based on Bay and Group-Row Comparisons (continued) 9/7/85 6/15/88 9/7/85 6/15/B8 B4Y 13 BAY 13 CR3 Row 1 CR3 RcV1 I i 1306.0 1240.0 1267.0 1070.0 ' 1317.0 1427.5 1467.0 1142.0 1315.0 1287.5 1425.0 1235,0 i 1454.0 1328.5 1358.0 1243.0 1516.0 1496.5 j 1227.0 1128.0 1505.0 j 1405.0 1480.0 1103.0 ,

  • j 1233.0 1225.0 1302.0 1234.0 1254.5 1115.5 637.0 \

l AV: LEIGHT 1402.2 1364.2 i 1344.9 1127.9 l stD. CEv. 100.318 95.664 102.872 174.592 s cr BASKEis 6.0 6.0 8.0 11.0

                                                                                                                                                          )

2 SCCRE 2.015 2.015 1.895 1.812 ) 958 ccwF. WT. 1319.6 1285.5 1276.0 1 1032.5

                             ,249 0.01833 l

I l l

t,

                                                                                                                                                       ~~

TE!!!1ESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2. - SHEET 7 8- OF 'i . 7 - BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE f T ' C/3/st CO!1 DENSER BASKET WEIGHTS FOR CHECKED /DATE L%s d Met: SEQUOYAH, UNIT 1, CYCLE 4* SE _______________________ U111T:1 _________________________QUOYAH_J- ________________ Table 5: Evaluation of' Historical'Nonpower Sublimation Rates Based on Bay and. Group-Row Comparisons-(continued) 9/7/85 6/15/88 9/7/85' - 6/15/88 . BAY 14 BAY 14 GR3 ROW 2 CR3 ROW 2 1521.0 1204.0 1461.0 1292.0 1336.0' 1377.0 1354.0 1316.0 1427.0 1369.0: 1517.0 1298.0 ' 1380.0 1220.0 1409.0 -1298.0-1447.0 1396.0 1323.0 1286.0 1251.0- 1414.0 1485.0 1254.0 1395.0 1291.0 1221.0 1348.0 1339.0: 1304.0 1269.0 1355.0 1235.0 1416.0 1351.0 1013.5 1167.0

                         *                                                                                                          ,1279.5 -
                          .     '/*A' O.C'
  • 1107.5 1
                                                                                                   .0                 1395.6         1274.7'
                                                                . . . c.4 6              92.863                       96,120         93.073                                                                                                                   )
                                         ...                          6.0                       6.0                                                                                                                                                           j 8.0          19.0
                         ..oRY                                    2.015                    2.015 1.895          1.734 95% CCNF. Wi.                               1316.5                   1253.6                                                                                                                                                               )

1331.2 1237.7

                     $UB. %/ DAY                             0.00459                                                 0.00675 1

J l i i e 9 i u._m___ . _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ m ___m___.________._____E. _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ . _ _ _ _ _ _ _ _

w-1

 .                                                TE!1tlESSEE VALLEY AUTHORITY SQNSQS2-0080       Rev. 2                         SHEET   ~14   OF   'l 7 BEST ESTIMATE EVALUATION OF ICE -                               PREPARED /DATEl.T f/2/n CONDENSER BASKET WEIGHTS FOR SEQUOYAH, UNIT 1, CYCLE 4                                        CHECKED /DATE W-i.4/sr
                                                                                                    - UNIT     1

____._ _______________ ______ _ _______ __SEQUOYAH ________ ______ __ Table 5: Evaluation of Historical Nonpower Sublimation Rates Based on Bay and Group-Row Comparisons (continued) i 9/7/85 6/15/88 9/7/85 6/15/88 BAY 15 BAY 15 CR3 ROW 4 GR3 ROW 4 1516.0 1221.0 1266.0 i 1217.0

  • 1246.0 1364.0 1430.0 l 1400.0 1295.0 1352.0 1302.0 i 1221.0 .

1395.0  ! 1216.0 1278.0 1186.0 1570.0 789.0 1342.0 1196.0 1522.0, 1324.0 1291.0

  • 1246.0 '

1332.0 1257.0 1258.0 1352.D 1248.0 1264.0 i 1205.0 1213.0 ] 1334.0 1145.0 1 1346.0 1230.0 1294.0 i 1218.0 1171.0 1299.0 1259.0 1302.0 1323.0 1304.0 1333.0 1289.0 1285.0 1186.0 1127.0 1251.0 1352.0 1433.0 1384.0 , 1255.0 ' t..L .:eCH1 1393.7 MR.0 1120.0

     ;!O ;ty.           93 +-        1388.0 a tr tap g,.                    1334.0 2 t"
  • 1389.0 1460.0 1413.0 1424.0 1298.6 1301.8 1249.2 133.079 130.584 59.663 74.019
     # OF BASKETS       . 6.0         26.0             8.0         21.0
  • 2 SCORE 2.015 1.708 1.875 1.725 95% CONF. W1. 1314.5 1254.8 1261.8 1221.3 SUB. %/ DAY 0.00436' O.00303

TE!1NESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 SHEET Bo OF + ~7 BEST ESTIMATE EVALUATION OF ICE CONDENSER BASKET WEIGHTS FOR PREPARED /DATE 17 ~t/3/a1 SEQUOYAH, UNIT 1, CYCLE 4 CHECKED /DATE b/ dr&r SEQUOYAH/- -UNIT 1

                                                                                                          ~

Table 5: Evaluation of Historical Nonpower Sublimation Rates'.. Based on Bay and Group-Row Comparisons (continued) 9/7/85 6/15/88 9/7/85 6/15/88 BAY 16 BAY 16 CR3 ROW 6 CR3 Row 6 1342.0 1220.0 1312.0 1291.0 . 1456.0 1342.0 1399.0 1331.0 1356.0 1419.0 1462.0 1334.0 1262.0 1456.0 1396.0 1316.0 1455.0 1338.0 1499.0 1380.0 1499.0 1020.0 1457.0 1353.0 1351.0 1403.0 1371.0 1438.0 1408.0 1346.0 1386.0 1340.0 1311.0 1336.0 1399.0 1322.0 1312.0 1380.0 1371.0 1360.0 1417.0 1396.0 1417.0 1395.0 1157.0 1450.0 1293.0 1465.0 1347.0 1492.0 1377.0 1414.0 1368.0 1380.0 j 1235.0 1416.0 ' 1327.0 1423.0  ! 1362.0 1372.0 1352.0 1378.5 1300.0 1382.0 1381.0 1276,5 1242.5 A'!G '410C 1210.5 "0 . 0 *

  • 1165.5
    ' "? U" * '
                                          .d5.0                                      1334.5             1417.0        1355.8 89.617                                      93.483              56.589        71.392
                                 .a         6.0                                           26.0                8.0        29.0
         .d                               2.015'                                         1.708            1.895         1.701 4 ccNr. WT.                        1321.3                                       1303.1             1379.1        1333.3 SUB. %/ DAY                         0.00132                                                         0.00319 o   .s

__________.___2------- - - - - - - - - - - - - - - - - - - - - '

TEll!IESSEE VALLEY AUTHORITY SQ11SQS2-0080 Rev. 2' . SHEET 8' OF 97 1 BEST ESTIMATE EVALUATIOli OF ICE PREPARED /DATE L 7 M / c! 9 CO!JDE115ER BASKET WEIGHTS FOR CHECKED /DATE .~/ udre SEQUOYAH, U?iIT 1, CYCLE 4 SEQUOYAH /-- UllIT 1

                                                                                                                                                                                        . i Table 5:              Evaluation of Historical 11onpower Sublimation Rates                                                                                                , i Based on Bay and Group-Row Comparisons (continued) --

9/7/85 6/15/2.3 9/7/85 6/15/88 , EAT 17 BAY 17 CR3 ROW 8 CR3 RCWS 1267.0 1292.0 1346.0 1195.0 1312.0 1217.0 1470.0 1245.0  ; 1266.0 1284.0 1412.0 1177.0 , i 1346.0 1291.0 1523.0 1343.0 1461.0 1310.0 1546.0 1250.0

  • I 1304.0 1195.0 1481.0 1253.0
                                                                                                                                                                                            )

871.0 1409.0 1234.0 J 1090.0 1452.0 1276.0 1316.0 1395.0 1400.0 1363.0 1314.0 1419.0 1331.0 1414.0 1 1255.0 1455.0 1245.0 1368.0 1298.0 1383.0 1221.0 1486.0 1320.0 1473.0 1334.0 1428.0 1329.0 1445.0 1177.0 1383.5 l 1319.0 1398.5 1324.0 1404.5 1 1316.0 1251.5 1338.0 1086.0 1380.0 1343.0 AVG WEICHT 1326.0 1273.5 1454.9 1338.6 STD. OtV. 72.644 105.710 65.094 105.975

   # OF BASKETS        .     .0         26.0                          8.0          24.0 2.SCcR0 'i              a15         1.708                       1.895          1.714
   " """"                .66.2        1238.1                      1411.3        1301.5
             .        0.00214'                                   O.00747

TEll!1ESSEE VALLEY AUTHORITY SQllSQS2-0080 Rev. 2 - SHEET 8 '2. OF 97 BEST ESTIMATE EVALUATIO11 OF ICE PREPARED /DATE f-T 6/3/N1 CONDE!1SER BASKET WEIGHTS FOR CHECKED /DATE w M /n SEQUOYAH, UNIT 1, CYCLE 4 SE ____.-______ _______ _____________________________QUOYAH "_- UllIT 1 Table 5: Evaluation of Historical Nonpower Sublimation Rates-~ Based on Bay and Group-Row Comparisons (continued) 9/7/85 6/15/88 9/7/25 6/15/83 . BAY 18 BAY 18 CR3 ROV 9 CR3 ROW 9 1467.0 1298.0 1304.0 871.0

  • 1354.0 1186.0 1227.0 940.0 1227.0 1353.0 1384.0 1256,0 -

1430.0 1196.0 1267.0 1123.0 1399.0 1250.0 1375.0 1496.0 1470.0 1246.0 1442.0 1526.0 - 1258.0 1463.0 1391.0 1264.0 1204.0 1376.0 1359.0 1371.0 1374.0 1253.0 l p 1142.0 1213.0 1297.0 1346.0 1352.0 1234.0 940.0 1235.0 1145.0 1283.0 1340.0 1370.0 1276.0 1278.0 1410.0 AVG WE!CHT 1391.2 1269.2 1333.3 1247.4

     $TD. DEV.        91.506        97.122          97.262     247.357
     # OF BASKETS        - 6.0          27.0
     ' * " "                                          8.0        8.0 2.015 1.706           1.095      1.895 1315.9       1237.3           1268.1     1081.6
    ..d. I'/. DAY    0.00573                       0.01412 l

l l l i

                               ~

l

i TEN!1ESSEE VALLEY AUTHORITY  ! SQNSQS2-0080 Rev. 2 . SHEET 23 OF 'l 7 BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE L7 u3/p 9 - ,, CONDE!1SER BASKET WEIGHTS FOR CHECKED /DATE L./ cA-/n SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH (-- -UNIT 1

                                                                       ---- ----------------------------------~.~~--

Table 5: Evaluation of Historical Nonpower Sublimation Rates Based on Bay and Group-Row Comparisons (continued) -- 9/7/25 6/15/88 1

                                                                                                  ,                               j BAY 19       BAY 19 1412.0      1286.0                                                         ,

1384.0 1230.0 1425.0 1336.0 . . z 1302.0 1243.G l 1517.0 1395.0 1462.0. 1256.0 '- i At/G VEICHT 1417.0 1291.0 { STD. DEV. 72.702 63.429

                          # OF BA$tETS            6.0         6.0                                                              )

2 SCORE 2.015 2.015 955 CCNF. WT. 1357.2 1238.8 1 i 0.00838 { I I 1 l 60 . e e

e 4 j TE!INESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 - SHEET 8 8+ OF 97 j BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE l--7 E/a/A9 - CONDENSER BASKET WEIGHTS FOR CHECKED /DATE W-4&4t- l SEQUOYAH, UNIT 1, CYCLE 4 SEQUOYAH '- UNIT 1

                                          ---------------------------------------------------------- =-----                      l Table 5:             Evaluation of' Historical Nonpower Sublimation Rates              I Based on Bay and Group-Row Comparisons (continued) 9/7/85         6/15/88 BAY 20         BAY 20 1267.0         1254.0                                                            l' 1396.0         1322.0 1523.0         1345.0                    .
  • I 1358.0 1363.0 1409.0 1123.0 1278.0 1291.0 1380.0 '

1414.0 1419.0 4 1348.0 1360.0 . 1425.0 1414.0 1

                            ".   . .*c;**                                                                                         i 1339.0 I

1396.0 l 1460.0 1455.0 1128.0 1304.0 1218.0 1395.0 1426.0 1368.0 1269.0 1454.0 1383.0 AVG WEICHT 137L8 1348.2 570. DEV. 94.660 90.659

                           # OF BASKETS       - 6.0             26.0 Z SCORE              2.015          1.70B 95% CCU . WT.       1294.0        1317.8 SUB. %/0AY        0.00177 9

48 _ _ - - ~ _ _ - - _ _ . - _

  • l TE!1tJESSEE VALLEY AUTHORITY SQIJSQS2-0080 Rev. 2 -

SHEET FF OF O , BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE l-7 (/3/61 - CO!JDE!!SER BASKET WEIGHTS FOR CHECKED /DATE!v s uran, SEQUOYAH, UllIT 1, CYCLE 4 SEQUOYAH /- UtlIT 1 Table 5: Evaluation of Historical lionpower Sublimation Rates Based on Bay and Group-Row Comparisons (continued) ~ l 9/7/85 6/15/28 BAY 21 BAY 21 1342.0 1299.0 1499.0 1450.0 1227.0 1486.0

  • 1323.0 1302.0 3

15 t.6. 0 1465.0 j

                                                                                                                                              ~

1375.0 1495.0 ' 1496.0 1304.0 1 1492.0 ) 1/.67.0 1239.0 1414.0 1447.0 1103.0 1355.0 1186.0 1343.0 j 1380.0 - 1420.0 ( 1486.0 l 1235.0 1251.0 q 1336.0 i 1416.0 1446.0 1473.0 AVG WE!CHT 1385.3 1378.4 STD. DEV. 118.045 107.002 0 0F BASKETS - 6.0 26.0 ' 3 SCORE 2.015 1.7CS 95% CONF. WT. 1283.2 1342.6 1 SUB. %/ CAY 0.00405 1 j i 1 i 4 @ i - _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ._ _ ..___ . . _ . _ . _ . _ . _ _ ___)

   ,                                                     TENNESSEE VALLEY AUTHORITY                                                        !

SQNSQS2-0080 Rev. 2 - SHEET B6 OF l '1 BEST ESTIMATE EVALUIsTION OF ICE PREPARED /DATE 4J U3/39 CONDENSER BASKET WEIGHTS FOR CHECKED /DATE L-/ //de, SEQUOYAH, JNIT 1, CYCLE 4 ( S

                    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - -- - E Q U O Y A H 4 - UNIT 1
                                                                                                              -----------------          l Table 5:            Evaluation of Historical Nonpower Sublimation Rates--                                          .

Based on Bay and Group-Row Comparisons (continued) 1 9/7/E5 6/15/E8 BAY 22 SAY 22 I 1457.0 1225.0

  • 1481.0 1423.0 14B5.0 1433.0 I 1291.0 1526.0 1480.0 1416.0 1442.0 1428.0 -

AVC WEICHT 1439.3 1408.5 STD. CEV. 74.562 98.717 0 of SAstEls 6.0 6.0 2 $ECRE 2.015 2.015 05% CCNF. VI. 1378.0 1327.3 SUB. %/ DAY 0.00353 1 9/7/E5 c/15/88* I BAY 23 BAY 23 1257.0 1391.0 1409.0 1351.0 l 1403.0 1255.0 1463.0 1445.0 j 1233.0 1234.0 1395.0 1372.0 AUG WEICHT 1360.0 1341.3 4 519. DEv. 92.544 81.512

     # of BA5KETS           6.0          6.0 Z SCCRE              ?.015        2.015                                                                                              l 0% Cckt. V'          - 3.9       1274.3 0.00072                                                                                                             i l

l

Is TE!1NESSEE VALLEY AUTHORITY SQ!1SQS2-0080 Rev. 2 SHEET 87 OF 1 "3 BEST ESTIMATE EVALUATION OF ICE - PREPARED /DATE I.7 JIh/P 9 CONDENSER BASKET WEIGHTS FOR CHECKED /DATE 'u ,/ tZr &, - SEQUOYAH, UNIT 1, CYCLE 4

                     - - - - - - - - - . - - -- - - - - - - . - - - - - - - -- - - - -- - - - - -- S ----------------~~

EQU OY A H /-- U N I T 1 Table 5: l Evaluation of Historical Nonpower Sublimation Rates' Based on Bay and Group-Row Comparisons (continued) 9/7/85 6/15/88 BAY 24 BAY 24 1221.0 1013.5 . 1408.0 1378.5 1452.0 14 72.5 . 1248.0 1383.5 1302.0 1254,5 1204.0 1161.0 ' 1382.0 1432.5 1398.5 1276.5 1354.5 1404.5 1242.5 1286.5 1115.5 1279.5 I 1120.0 { 1210.5 1224.5 l 1251.5 1376.0 637.0 i 1107.5 1165.5 1118.5 10B6.0 AVG WEICHT 1305.B 1236.1 STD. DEV. 102.693 173.515

     # OF BASKITS         *-6.0        26.0
                           .015       1.708 1221.4      1178.0
        .  ..-(, A v EUB. %/0AY        0.00341 O  e

O

                                                                                                                                             \

TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 . SHEET 68 OF 97 l BEST ESTIMATE EVALUATION OF ICE CONDENSER BASKET WEIGHTS FOR PREPARED /DATE PT 4^/9 5 ] SEQUOYAH, UNIT 1, CYCLE 4 CHECKED /DATE hs <&/n

                                                              ---------------------------------------------- SEQUOYAH              6- UNIT I 8.0   RESULTS
                                                                                                                                          .. l Table 7 reflects the results of the individual bay analysis.

This table provides predictions of weights for times of 17.5 and 18.5 months (531 and 546 days). Since'the 18.5 month l results of are bouading, this estimation will be the primary focut the discussion. It is predicted here, that 3 bays will be below the 1200 pound technical specification limit 18.5 months following the September 16, 1988 (last date of actual ice weighing) ice surveillance. However, the technical specification limit contains a 10 percent conservative allowance for ice loss through sublimation and a 1 percent conservative instruments. allowance for systematic error in weighing The analytical limit (amount of ice taken credit for in the safety analysis) is 1080 pounds / basket (1080

  • 1.11
                                                            = 1200). No bays are projected to be below this analytical limit ,hence, sufficient ice is available to allow the ice condenser to perform its intended function. The average bay weight at 18.5 months is predicted to be 1264 pounds.. This results in an overall ice mass of 2,458,000 pounds.

Note that " ERR" is displayed in bays 3, 12, and 14. This is the error signal generated by LOTUS and is caused by a

                                                            " division by zero" within the. equations. Recall that all negative averaging.

sublimation rates have been set to zero prior to For these cases, all sublimation rates were computed to be negative. Subsequently, the overall > sublimation

                              -                             rate was computed as zero resulting in the error signal. The end   effect shows a constant ice mass throughout the time interval.      As stated in section 7.0, this is result is based on bT '/;

best estimate judgement. The results for the group-row analysis are depicted in Table 9. Again, predictions of average weights for ,17.5 and 18.5 months SPE following the latest surveillance'are reflected.

                         . Cu . -                          weight   after 18.5 months is shown to be approximately 1237The' average pounds / basket.

condenser mass of This converts 2,405,000 into a total overall ice pounds. Comparing this value to the corresponding results are bounding. total for the bay results, the group-row Note that technical specification requirement ofthe total mass pounds. 2,333,000 is above the Table than 1080 9 also shows pounds that one area is predicted to exhibit less

                                                                                / basket.

found in group 3-row 1. This The area noting the low ice weight is l weight is primarily due to the low initial weight found in September 1988. Recall that the September 1988 values are the weights at the 95 percent confidence by the standardleveldeviation. and that these numbers are greatly influenced relatively high mean weight, Although the large this regiondeviation standard exhibits a

    .._.m_____.__-___-      - - - - - - - - - - - - - - -

4 TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2 SHEET 81 OF 1 ~1 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE LT (/N M CONDENSER BASKET WEIGHTS FOR CHECKED /DATE 1 d ur/n SEQUOYAH, UNIT 1, CYCLE 4 SE e- UNIT 1

         --- . ------------ .------ ----------     --------- QUOYAH statistically skews the 95 % confidence weight, thus, causing-a low initial weight.

D g. e e 4 l I l j

I

                                                                                                                                                                                  \

i

 .                                                         TENNESSEE VALLEY AUTHORITY                                                                                            .

SQNSQS2-0080 Rev. 2 SHEET 90 OF_. 97 - BEST ESTIMATE EVALUATION OF ICE PREPARED /DATEJ-7 U 3/# f ' CONDENSER BASKET WEIGHTS FOR CHECKED /DATE w/ /,////9 SEQUOYAH, UNIT 1, CYCLE 4  !

                                            .-------------------------------SEQ                    UOY
                                                                                                 - ----                  ---           A --:----      H (- - UNIT 1 Table 6:

Summary of Sublimation Rator Per the Individual Bay-Analysis l

                                                                                                                                                                             'l
     $USLIMATICW        RATES,       BAY SAY      (% / OAY)                                                                                                                       l
                                                                                                                                                                          . a BAY 9/19/81         1/25/82      12/16/82     3/30/84      9/7/85                                   '

TO 10 to TO TO 1/25/82 9/13/82 12/31/83 4/22/85 6/15/88 1 0.0337 0.0104 0.0157 0,0129 0.0089 2 0.03 75 0.0044 0.0022 0,0091 0.0048 3 0.0000 0.0000 0.0000 0.0000 0.00$0 4 0.0309 0.0210 0.0032 0.0084 0.0053 5 0.0237 0.0275 0.0000 0.0048 0.0058 6, 0.0155 0.0178 0.0019 0.0000 0.0041 7 0.0426 0.0000 0.0000  ; 0.0021 0.0051 8 0.0000 0.0082 0.0438 q 0.0000 0.0031 9 0.0000 0.0354 0.0059 0.0180 0.0011 10 0.0184 0.0374 0.0134 0.0000 0.0000 11 0.0287 0.0130 0.0048 0.0000 0.0025 12 0.0000 0.0000 0.0000 0.0000 0.0035 13 0.0000 0.0152 0.0145 0.0043 0.0025 14 0.0000 0.0000 0.0000 0.0000 0.0046 15 0.0000 0.0000 0.0125 0.0173 0.0044 16 0.0000 0.0239 0.0151 0.0000 0.0013 17 0.0088 0.0000 0.0138 0.0133 0.0021 57 0.0210 0.0224 0.0055 0.0057 J.0212 0.0000 0.0026 0.0021 0.0084 0.0000 0.0364 0.0196 0.0160 0.0000 21 0.0056 0.0164 0.0368 0.008S 0.0000 22 0.0098 0.0129 0.0130 0.0135 0.0035 23 - 0.0000 0.0260 0.0282 0.u67 0.0007 24 -0.0482 0.0000 ,. 0.0301 0.0148 0.0034 _ _ _ _ _ _ _ . _ . _ _ . . _ . . - - - - - - - - - ' - - ~ "

l '

 .,                                                                               TENNESSEE VALLEY AUTHORITY t

SQNSQS2-0080 Rev. 2 . SHEET 9i OF 17' BEST ESTIMATE EVALUATION OF ICE PREPARED /DATE l 7 U3 /M 1 CONDENSER BASKET WEIGHTS FOR. CHECKED /DATE LA.s //i/#5 ' SEQUOYAH, UNIT.1, CYCLE.4

                                    - - -- - -- - - - --- - - - - - - - - - -- -- - - - - - - --- - - - - - -- - - - - S E              QU O Y AH /- U N I T 1
                                                                                                                                                                    )

Table 7 : Predicted Ice Weights at Various Time Intervals for Unit 1, Cycle 4 (Individual Bay Analysis). f { BAY  ! SE0lNING WON PWR PWR SUBL. DAYS TO VEICHT AT WE!0HT AT-' bE10HT SUBL. . RATE 1080 LBS 17.5 MONTHS 18.5 HONTHS RATE (531 OAYs) (546 OAYS) (LBS) (% / DAY) (% / OAV) (CAYS) ..-(LBS) # (LBS) I i 1 1319.8 0.0089 0.0182 1041.9 1201.9 1198.3 2 1373.1 0.0048 .0.0133 1657.5 1284.9 1282.2 3 1443.1 0.0050 0.0000 ' ERR 1437.9 1437.9 4 1367.5 0.0053 0.0159 1378.2 - 1263.1 *259.8 5 1300.7 0.0058 0.0140 1260.3 1212.2 1209.4 6 1354.3 0.0041 0.0088 2349.5 1295.9 1294.1 7 1361.4 0.0051 l 0.0112 1893.8 ' 1286.8~ 1284.5 8 1361.8 0.0031 0.0130 1651.6 1277.8 1273.2 ' 9 1354.6 0.0011 0.0148 1434.5 1261.4 1258.4

                                 .         1314.9            0.0000           0.0173       1106.6           1210.8          1207.4 11..       1337.1            0.0025           0.0116       1715.5           1263.7          1261.3 12         1277.7           0.0036            0.0000           ERR          1274.4          1274.4                                 d 13        1332.9            0.0025            0.0085      2286.8            1278.6 14                                                                                           1276.v 1372.3            0.0046            0.0000'          ERR          1367.7          1367.7                               ' '

15 1328.9 0.0044 0.0075 2549.4 1279.4 16 1277.9 1364.3 0.0013 0.0097 2203.4 1302.1 1300.1 17 1296.4 0.0021 1 0.0090 1918.0 1241.1 18 1239.4 1290.9 0.0057 0.0136

  • 1244.9 1205.2 1202.5 49 0 005.0 0.0084 0.0065 2654.4 1258.6 1257.3 120 1300.1 0.0900 0.0180 1013.7 1192.9 21 1189.4 1351.0 0.0000 0.0169 1262.7 1246.6 1243.2 22 1380.9 0.0035 0.0123 1827.8 23 1299.7 1297.2 1376.1 0.0007 0.0152 1483.2 1279.4 1276.3 24 1327.5 0.0034 0.0233 864.4 1182.8 11,78.2 AVERADE 1266.9 1264.5 TOTAL 2.463E+06 2.458E+06 r ~1 r
                                                                                                                                                                 -j i

4 9 l J

TE!114ESSEE VALLEY AUTHORITY SQtJSQS2-0080 Rev. 2 - SHEET 9 '2. ' OF 41 DEST ESTIMATE EVisLUATIOli OF ICE CO!JDE!JSER BASKET WEIGHTS FOR PREPARED /DATE l-7 sh/dS SEQUOYAH, UllIT 1, CYCLE 4 CHECKED /DATE Ws> AN/#9 ' SE V- UllIT 1 ____ _____ ___ _______________ __________ ______Q_UOYAH _______________ Table 8: Summary of Sublimation Rates Per the Group-Row -- I Analysis SUBLIMAi!OW RAf[$, CRP RDW (% / CAY) . 9/19/81 1/25/82 12/16/c2 3/30/84 9/07/85 ' 70 TO 10 70 70 1/25/82  ; 9/13/82 12/31/83 4/22/85 6/15/88 , OROUP1 Rov) 0.0147 0.0345 0.0449  ! 0.0182 0.0270 CRWP1 ROW 2 0.0346 0.0320 0.0380 0.0183 0.0056 { CROUP 1 R0w4 0.0154 0.0058 0.0127 0.0121 0.0042 ) 020cP1 ROW 6 0.0171 0.0000 0.0099 0.0000 0.0054 OROUP1 se 8 0.0253 0.0000 0.0052 0.0000 0.0055 CROUP 1 row 9 0.0000 0.0008 0.0037 0.0204 0.0162 OROUP2 a0w1 0.0045 0.0260 0.0159 0.0313 0.0199 LROUP2 Row 2 0.0000 0.0281 0.0105 0.0072 0.0053 croup 2 RCv4 0.0000 0.0189 0.0099 0.0000 0.0048 CRa;P2 Re.16 0.0000 0.0188 0.0057 0.0000 0.0020 CROUP 2 8* 0.0000 0.0122 0.0000 0.0000 0.0092 C# " 0.0000 0.0000 0.0067 0.0000 0.0221

           .,Rowl        0.0083      0.0329        0.0386      0.0381        0.0183
       .auP3 ROV 2       0.0000       0.0326       0.0258       0.0114       0.0067 CROUP 3 ROW 4       0.0000       0.0208       0.0221       0.0084       0.0031 CROUP 3' ROW 6      0.0000       0.0115       0.0095      0.0015        0.0032 CROUP 3 ROUS        0.0000       0.0132       0.0000      0.0140        0.0075                                    ,

CROUP 3 ROV 9 0.0174 0.0174 0.0091 0.0118 0.0141 1 l l t

j

    ..                                                             : TEN!1ESSEE VALLEY AUTHORITY i

SQllSQS2-0080 Rev. 2 , SHEET 'l 3 OF 97 DEST ESTIMATE EVALUATION OF ICE PREPARED /DATE JJT sh/et ~ CO!! DENSER DASKET WEIGL'TS FOR CHECKED /DATE '/M4/r/B7 j SEQUOYAH, UNIT 1, . CYCLE'4

                              -------------------------------------------------QUOYAH                                     SE                  f- UNIT 1
                                                                                                                                                          , .{i
                                                                            ~

Table 9: . Predicted Ice Weights at Various Time Intervals for_ Unit'1, Cycle 4 (Group-Row Analysis) PREDICTED WE1CHTS BEGINING NOW PWR. PWR SUBL. DAYS 70 1

                                                                                       ' WEIGHT AT WE!CHT AT WE!CHT AT                                .

WE!CHT SUBL. RATE- 1080 LBS 17.5 NONTHS 18.5 MONTHS 571.7 DAYS RATE. (531 CAYS) (562 DAYS) ,, (LES) (% / DAV) (% / DAY) (DAYS) (LBS) (LBS) -(LBS) c20UP1 ROV 1 1281.9- 0.0270 0.0281 573.4 1095.0 1084.0 1080.6 C:w ea '2 - 1369.4 0.0056 0.0307 . 750.2 1171.8 1158.8 1154.8

                           ..       1297.9         0.0042        0.0115         1510.4          1225.7-      1221.1       1219.7                              4
                        =0W6        1392.0         0.0054        0.0068        3343.8~          1343.6      1340.7.       1339.8
              ~30VP1 ROWS           1463.1         0.0055        0.0076        3466.7           1406.3       1402.8       1401.7                                1 020UP1 ROW 9          1359.4         0.0162        0.0062        3228.4           1305.2       1302.6      1301.8                               I czouP2 ROW 1          1213.4         0.0199        0.0194-         571.7          1089.5      1082.3'      1080.0
            'CSNP2 ROW 2            1238.9         0.0053        0.0115        1162.5           1169.3      1164.9       1163.5 ca0UP2 ROW 4          1299.8         0.0048       0.0072         2381.0           1252.5      1249.6       1248.7 ce0UP2 R09,6,         1416.5         0.0020       0.0061         3932.6           1374.7      1372.0       1371.2 C20U,P2, RC.;8;       1438.8         0.0092       0.0031         8065.7           1409.2     -1407.8       1407.4 GROUP 2 ROW           1290.9         0.0221       0.0017         9050.5           1260.5      1259.8       1259.6-Ci&JP.3 -

GAWP3 ROW 1 1215.3 0.0183 0.0295 409.5 1037.0 1026.1 1022.6

                                        .5         0.0067       0.0175         1114.4           1214.4      1207.3       1205.0-16.1         0.0031       0.0128         1459.2           1236.1      1230.8       1229.2
                    .,nuw6         1363.2         0.0032        0.0057         3678.8          1324.4       1322.0 GRWP3 ROWS                                                                                                 1321.3 1326.0         0.0075        0.0068         2726.6          1277.5       1274.7       1273.9 CROUP 3 RO.9         1261.8         0.0141        0.0139         1045.2          1169.3       1163.9'      1162.2
                                                                                                                 ^

AVERACE 1242.3 1237.3 1248.7 TOTAL 2.415E*06 2.405E+06 2.428E+06 l 1 j j l 1

                                           =                                                                                                                  .

i

                  .                                                                                                      I TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2                     SHEET    'I 4 OF 9 ~7 DEST ESTIMATE EVALUATION OF ICE               PREPARED /DATE L7 t/3/n CONDENSER BASKET WEIGHTS FOR                   CHECKED /DATE'f M dr/M SEQUOYAH, UNIT 1, CYCLE 4                           SEQUOYAH     4 UNIT 1 s.0  CONCLUSIONS / RECOMMENDATIONS The results in general agree with historical surveillance.

Low weights predicted in bays 1 and 24 are common due to their location near the ice condenser end walls. ,Also as predicted by the calculation, rows 1 and 2 generally exhibit much higher sublimation rates than other rows. This is due to their close proximity to the ice condenser inlet doors. Both areas are subject to large heat losses to the environment. However, the l abnormally low weights predicted for row 1 and-2 are largely due to the small initial weights found in September 1988. l The results of this analysis show that 18.5 months after the latest ice surveillance, sufficient ice will exist in the ice

                   . xn c. . condenser system to mitigate the effects of a LOCA. This is based on the total ice inventory predicted and the even distribution throughout the containment. Eighteen and one half months following the latest ice weighing, an average of                        i approximately 1237 pounds is shown to exist in each basket of the system. This value is the minimum average from the two calculated cases and is well above the analytical limit of 1080                j pounds. The total weight (2,405,000 pounds) is also well above              J the analytical limit of 2,100,000 pounds.

The group-row results are limiting for overall weight considerations as well as containment distribution indications. Sinca.cnly one group-row region is projected to be below 1080

                  .-a.a r :-i pounda,.the distribution of ice must be acceptable for the pass a ~.a              rematning regions. The restrictive area (group 3-row 1) is pas 3 a~                only 58 pounds (5 percent) below the analytical limit but will not significantly effect the safety requirements of the ice condenser system.                                                            .

4ne above arguments support the relaxation of the ice j It is also recommended that surv.cillance weighing intervals. the interval for unit 1, cycle 4, not be extended past 18.5 months from the September 1988 ice surveillance. sw

                                                                   .                                                                                                 i TENNESSEE VALLEY AUTHORITY SQNSQS2-0080 Rev. 2                     SHEET 95          OF    'I ~7 '

BEST ESTIMATE EVALUATION OF ICE . PREPARED /DIsTE A7 uS/g9 '; CONDENSER BASKET WEIGHTS FOR CHECKED /DATE v~r &/r/a SEQUOYAH, UNIT 1, CYCLE 4 i SE /- UNIT 1

                                                                         ----_-_--__-_____________________________________QUOYAH    ________________

ATTACHMENT A , EXCERPT FROM ICE VERSION SQ1.0 , s. e I i 9 0

  • w

1

      .                                                                                                                                                                           i C

TEltNESSEE VALLEY AUTHORITY 96 I' ~ _ F "/ l

                      '~
                                    ~"SQNSQS2-0080 Rev..e 2.

BEST ESTIMATE EVALUATION OF ICE SilEET W OF_ # j

                                                                                                      }-7 d/r/r' PREPARED /DATE t-r CONDENSER BASKET WEIGl!TS FOR SEQUOYAH,              UNIT 1 .,.           CYCLE                                 jd/d7 CHECKED /DATE                                 ,o v/h/e   vh. 6 l i
                   =.
                                                                      --4  ----                                                   SEQUOYAH                r-      UNIT            l i,

l, l

                                   ., "3 M 1.0                                      '
                                                                                          ' THEORY PA08 4 -           2   ~ '. -
                                                                                                       ~ ,,

l

                                                                                                                                                                                  )
                                                                                                                           -                                                      i 1

i et  ! os I s The icy limit population ces.n is then given by the follovirg s cn. erpres at 2*3 [ I icw

                                                     *I-(              -)                     where.

T4R7(N) 2 e 2 score a described in the next asctions

                                                                           . Y.

4 3.12.ecore for N < 30 i Fcr a sasole size of less than 30, 2 eust be determined using' the

  • T-distratution tables for fromalpha = 0.05 and v a K.1 degrees of fr followir.g la an excerpt this table. P eeace. The ,

t v n1phas o.05

                                            ....-.... ....                                                y    alphs o.05 1          6.314                                       . ...... ....                                                .        -

2 2.920 16 1.7t6  ! 3 2 353 17 1.7h0 4 2.132 18 1.734

5. . 2.015 19 . 1.729 6 20 1.725 1 943 7 21 1 721 1.695 8 1.t60 22 1 717 9 1.633 23 1.714 to 1.812 24 1.711 11 1.7$5
                                                                                        .            25          1 708 12            1.702                                        26         1.706                                                             l 13            1.771                                        27         1.703 14            1.761                                       28          1.701 15           1.753                                        29          1.6 9 F int         1. 6 %

4 3.2 2.ecore for N >= 30 For a sample site of 30 or more, alpaso.05. The 1. score inesses thanethe equals 1.645. standard rior si distribution r is us 7 , . . , . . . . -

1. .
                                                                                                 .y                            ..+s.. . .ssM..26u
                                                                                                           - ~ :. ,
                                          . ;.-;._.                             -                                                                                         4.u
                                                                                                                          .,, % M.            w.w     &    <;',
                                                 , , y :. w . .v ..
      .>J.?   ['..'

98  : ._ . . . M. . c 97 4 ' z...r.x:Q.iN.45Q.4- c dR.k'i/' ..W'"

              ..w..M.$weY,TbN$.$-b. .,5fksh' _.f3INf_fh,g...s y mi.              -

d TElll1ESSEE VALLEY AUTHORITY , 9i r 97 Rev. O 'E-SQNSQS2-0080 SHEET w 'OF .M - BEST ESTIMATE EVALUATION OF ICE hT M h' PREPARED /DATE br */t./s, CONDENSER BASKET WEIGHTS FOR SEQUOYAH, UNIT 1, CYCLE 4 9 vf/4 CHECKED /DATE bv SEQUOYAH/-- UNIT-1 w^.ta-t s :c =t.o ,Turcar Fitz a - , 1 -

                                                                                                                                    ~                      '

i -,...y

                                                                                                                                                                                                        \

l The following sections descrite the statistical methods veed by ICE. The program assu=ce that the ice tasket. weights approx 1:ste a norr.a1 distribution. 4.3 !a.1ple Hean i

                                                                                               ~          ~

The anzple cean la calculated'~usir47ho fo11csing equation.

                                                      -       B
                                                     .Ie    .*~"N    (. I )                       where, I e individual basket weights
                                                                                                                                                                                       -       t ist           i                                   i Ne total number of baskets N         .....                                 weigned
                      *     /

4.2Sa.sploStandardLeviatiy, The e.a ple standard deviaticn, 5, is then oo=putad ustr4 the follewir.g equation.

                          "                           3 e :0RT (.20H.(I . I)

N. - 2,

                                                                                              ).
                                                                                                                                  .~            

ist i n-1

                                                                                                                               ..l....

l 4.3 Ccnficence Interval . *

                                    ~                              ...                                 .          .             . ..

T'cr this problem, the confidence interval can be descritsa se folleva. The probability that ( x ). X ) e 0.95 Icv Where, x e true topulation eran I e calculated low limit =can icw rer a $55 ccnfidence interval (alphano.C5), we have the tellowing, cre.talled distrat.itten curve. 4 Th'irf.<do, m A lan,c) .fa,,, u_ g g .

                                                                *                                                                                                          . . , , .   .....t,,, ,
                                                                                                                                                      . . .Z. ; -.K.,:.,
                                                                              ..        s.        : .. s -...                                                               J.'d
                                                                                                                                . , . _.. ,;; L ;a; ,.;. k k y 4 ; Q kl!
  • tL-
                                                                          . n,w. ..M.                    . . y.~: . . ..,..u.i (. .Q' ;&
                                                                 .             . ..        ...                                                                          ' "~ W                   ]
                                                                          .                       ew.a
                                      -N$fh!h$hh5 inh , ..[ g-                                                              ,_
                                                                                                                                                                                                 =      .

m__________________ _

I l

 .                                                                                                                                                  )

i SEOUOYAH NUCLEAR PLANT DAILY STATUS REPORT - 1

                                                                                                                                                    \

June 14, 1989 PLANT STATUS Julian Date 165 l I PARAMETER UNIT OF UNIT 1 UNIT 2 j MEASURE l Reactor Powerl Percent 99.30 92.71 RCS Pressurel PSIG 2,235 2,233 RCS Temperature 0F 577 575 ) Generation Loadl (Instantaneous) MWe 1,152 1,089 MWe 1,116 1,060 Not Generation 1 (Instantaneous) q Gross Heat Ratel (Instantaneous) BTU /kWH 10,100 9,915  ! Not Heat Ratel (Instantaneous) BTU /kWH 10,380 10,170 I Average 24-Hr Gross Load MWh 1,153 1,152 Gross Generation (Past 24 hrs) MWh 27,680 27,656 Gross Generation (F-Y-T-D)

  • MWh 4,589,922 3,009,824 Capacity Factor (Mtly) Percent 92.0 98.38 l Capacity Factor (F-Y-T-D)* Percent 63.15 41.41 _

Availability (F-Y-T-D)* Percent 67.44 61.56 ) Full Power Capacity EFPD 404.9 411.6 EFPD - Previous Day EFPD .9941 .9857 EFPD Cumulative EFPD 163.5433 41.0721 EFPD Remaining EFPD 241.3567 370.5278 Core Exposure MWD /MTU 6261.22 1568.65  ; Days Critical From Last Restart Days 121 49 l I Days Cont. Operation - on line Days 121 46 Total Days Operated (Mtly) Days 13 13 Total Days Operated (F-Y-T-D)* Days 174 159  ! l Outage Duration Days NA NA l 3 Data as of 6:15 am, all other data as of midnight previous day. cData has been recalculated based on Fiscal-Year-to-Dato statistics. l l l

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I COMMON STATUS June 14, 1989 - DATE/ TIME DATE/ TIME ANTIC. TS DESCRIPTION STATUS ENTERED LCO EXIT LCO # LCO EXPIRES DATE Fire barriers Inop Continuous Does not Contin. 3 7.12 expire 0-RM-90-212 Inop in alarm 5/25/89 6/24/89 6/15/89 3.3.3.9 ) Turb Bldg Sump WP M942-01 0752 0752 .. Fire detectors & Inop for zone 5/2/89 5/16/89 6/30/89 3.7.11.2 sprinklers 227 & 228 0835 0835 3.3.3.8 WP 1094-01  ; Seismic monitor Out for SI-125 6/13/89 7/13/89 7/13/89 3.3.3.3 l 0900 0900 D/G 2A-A Out of service 6/14/89 6/17/89 6/16/89 3.8.1.1 i for SI-102 0610 0610 ) OFF-NORMAL CONDITIONS OR SIGNIFICANT EQUIPMENT DEFICIENCIES:

           *
  • SI-102 on D/G 2A-A 00 Denotes new items call ext 7528 o- 6722 to update status of any of the above information.

THE FOLLOWING ITEMS WERE RETURNED TO NORMAL: None Major Work Activities for Today A. 2A-A D/G outage ' B. WR-B790731 incore instr. room chiller B C. NR-B265523 Elect bd. room chiller B (ME) I

IUllIT1 STATUS i, June 14, 1989 Returned-to-service: February 13, 1989 at 2256 Mode 1 DATE/ TIME DATE/ TIME ANTIC. TS DESCRIPTION STATUS ENTERED LCO EXIT LCO # s LCO EXPIRES DATE - ( ' RPI E-1 Inop 5/23/89 Flux map Next out- 3.1.3.2 0700 every 8 hrs age PORV PCV-68-334 Isolated 5/25/89 N/A Next out- 3.4.3.2 (leaking thru). 1259 age ~ 1-LI-68-325C & Inop 6/13/89 6/20/89 6/20/89 3.3.3.5 326C 1055 1055 OFF-NORMAL CONDITIONS OR SIGNIFICANT EQUIPMENT DEFICIENCIES:

  • Shutdown bank 'D' RPI E-13 inop - flux map every 8 hours
  • 1-LCV-6-106A, #3 HDT level swing problem , Systems Engineering investigating
                  ** After calibration of MW meter - 10 MW were lost
          ** Denotes new items call ext 7528 or 6722 to update status of any of the above information.

THE FOLLOWING ITEMS WERE RETURNED TO NORMAL: None l Major Work Activities for Today A 1-LCV-6-106A & B action plan (Vendor) B. WR-B285474 MCR chiller A (brg) (ME) C. WR-B790651/B790652 Prz level 68-325C/362C (MI)

I C*d W ""r' '~ i

                                  ~

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                                                 " f*u j
                                                   .            b                   \& Wa ~e  &

UNIT 2 STATUS June 14, 1989 On-line: ADril 29, 1989 at 0056 f Mode 1 c* Power ascension to 100% in progress - maintenance is completed on '2A' CBP s, o* Unit 2 has generated over 3,000,000 MWh FYTD . DATE/ TIME DATE/ TIME ANTIC. TB  ! DESCRIPTION STATUS ENTERED LCO EXIT LCO # l LCO EXPIRES DATE PORV PCV-68-334 Isolated 4/27/89 N/A 3/90 3.4.3.2 (leaking thru) 0034 OFF-NORMAL CONDITIONS OR SIGNIFICANT EQUIPMENT DEFICIENCIES: C* Bank select switch not operating correctly - WR-B790699 00 Denotes new items ff s.# O Y '

                                                                                                                        )

Call ext 7528 or Y 2 to update status of any of the above I information. THE ?OLLOWING ITEMS WERE RETURNED TO NORMAL: None Major Work Activities for Today A. WR-B790699 Unit 2 rod control l i

m )TennosacoRivor2arzmators i Sourca l Limit. Actual

' Ultimate Heat Sink **               I SI-2       83/84.5 OF          72.85 OF Lake Level                                  SI-2         670 ft           683.5 ft  ~

Downstream Temp (SI-666 - max SI-666 86.9 OF 75.76 OF  ; temp 0600 to 0500)*** 0100e Delta T (Greatest change 0600 to SI-666 5.4 OF 2.79 OF 0500) * * * - 2000e - Rate of Change (Greatest change SI-666 3.6 OF/hr 1.29 OF l 0600 to 0500)*** 1400e Present Flow Dam - 58,800 CFS 1 Flow

  • Dam -

47,100 CFS Cooling Tower Mode Operations - Open (Open, Helper, Closed)

  • 12 hour average from 6 am to 6 pm of previous day
** TS limit is 83 O F when lake level is below 680 feet mean sea level,                 u
*** 0600 yesterday to 0500 today                                                         1 l

i SIGNIFICANT CHEMISTRY or ENVIRONMENTAL CONDITIONS j Condenser Air Inleakage (standard cubic feet per minute) On 6/13/89 @ 1500 i 1-FE-2-256 = 5 scfm ) 2-FE-2-256 = 8.5 scfm  ! Chemistry Parameter Limit Actual Unit 1 Average Steam Generator Blowdown Cation Conductivity .8 unhos/cm 0.083 on 6/13/89 @ 0800 Unit 1 RCS I-131 Dose .75 uci/gm 9.83E-03  ; Equivalent on 6/13/89 0 0535 Unit 2 Average Steam Generator Blowdown Cation Conductivity .8 umhos/cm 0.099 on 6/13/89 @ 0600 Unit 2 RCS I-131 Dose .75 uci/gm 8.37E-03 Equivalent on 6/12/89 0 0810 SIGNIFICANT RADIOLOGICAL CONDITIONS See Attached l flk d!%H er *.

1 POTENTIAL REPORTABLE OCCURRENCE

                                                                                                                ~

PRO LCO NUMBER DESCRIPTION ENTERED / INVOLVED 1-89-136 Date of discovery: 6/13/89 At 1055 on 6/13/89, Unit 3.3.3.5 I 1 entered LCO 3.3.3.5 due to 1-LI-68-325C_and 326C .,_ (pressurizer level indication in the backup control , room) dec:ared inoperable. Reading 72%. 1-89-137 Date of discovery: 11/16/89 Found 0-PI-14-196 and N/A 0-PI-14-195 out of TI-54 compliance tolerance while " performing SI-198. -PIs calibrated and returned to service. WR-B283175 and B283784 l CAQRs/PRDs APPROVED BY MANAGEMENT REVIEW TEAM A D C A: Potentially Affects Operability B: Abnormal Event C: Affects Hardware j N M N CAQR SQA890340910: Initiators Org. (NQA&E) Responsible Org. (SQO- j RHG) Contrary to the requirements of PMP 0202.12, contract techni-cians not meeting ANSI N18.1-1971 qualifications performed tasks in the Radiological Health Dosimetry Duty Areas during the period from January 1989 to March 1989. N N N CAQR SQQ890341: Initiators Org. (PQS) Responsible Org. (SQO-MEG) Contrary to AI-4, Section 14.5, Electrical Maintenance failed to verify the correct revision of the work document. Specifically: five occurrences in approximately 20 monitoring activities between 4/3/89 and 6/2/89 identified this deficiency; SI-234.6 on 4/3/89, WR-B244570 on 4/21/89, WR-B256690 on 4/27/89, PM 1372 on 5/8/89, WR-B256938 on 6/2/89; these items were handled as COTS items; how-ever, occurrences over the last 2 months is indicative of a program-matic problem. N N N CAQR SQP890342: Initiators Org. (NE-CEB) Responsible Org. (SQP-LNE) During the revision of report CEB-76-03, it was discovered that a portion of the S/G Wet Layup (SGWL) system (4 lines) that connects to the main feedwater system in the yard extends into the auxiliary l building (app. 18") to the isolation valves without proper consider-ation for a High Energy Line Break (HELB). }

4 SIGNIFICANT RADIOLOGICAL CONDI* IONS 9 JATE: 06/11/G9 ' ONE PERSONNEL C ON T AMINATIDu - AN EN ELE f ?1CI AN 'J. 3 Al TEM'INL T O tR I T THE RCA AND ALARMED HIE BEI AMM. HIS LI.T7 ~ HllE W, ; FWND : O LL , CONI'AMINATED TO 1000 CPM. NO UDNl AMINM ii,N S!?i % MPE llif RED EP/ THE JNDIVIDUAl.. PATHWAY StlPVEYH fA! LED !!! !!ND '

1-3OUb"M- T h CUN ~AMINAT 10tl. **

__ ._, . _ _ ~ . ~ ... NO l! RADIOLOGICAL INCIDENT PEPORTS _- . . . . -h.. - . . . . - .- - - .- . - NO i;HANGES IN AREA HOUSEKEEPING STATUS 4e ev eh ,gpeape .m_ww. ,e.my. =>g 4 4 6 - -- se eN - , man @u'h=gr#r e w*eg iD-hee apeonem aysete q=pm yg.il, geum egy,gge B.whh = w-  %".twe .f gma,earmem. A.te.Wy a. -g eo-sumy w e g.. -,,yhegg, es O&6-+h geese a ste@-sN$ .6 44mme .m a =ame - p.et-. tb6 8P *N * -4* 6e.%en-.=g.r .='eaua.1enombgumeree<==me.eas,e ., 3 mgg ame+- e .. sm. aces.+ w es4 pedes-h h.we emetent aeaw . W=u'-=eim' - 9 Guh me me. 4 emm eem4-a<spinm.g peap. w esami ,gm.g.gy.am-age.gspes, p assme64, i ene gon e ems.-.a.impe+*e. mw .g4 a,egh exh-+-.sen . we4suw,.a.a.=-<ei w e me.amh g e d.. eeg=wshag

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                                                                                                                                                                               -mu m waDah 4s a L-amm.aq=^ar pe-we.                            .

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           -h'             # WOME88h 6, $r45mp.                      . --                                - tm +ae we ar ei Mesa.                4e             a-.mme,s.asw.i.....e               ma.,w..              e.$e                                                                                      .,.o/

6.mp 59306 6 #D*48*.98@- aW eg>. *m e eDe S eememmg.y g e e . 4

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                                                                                                                                                                                                                                            /                                                                                             /                                                                                                                                        !

mm A a 4 ._ l; i l l I

[ . I SEQUOYAH NUCLEAR PLANT Collective Exposure Daily Trend 1000 - - - - - - - - - - - - - - -

                         ~

Fis.:a1 Year Total 671 person-rem 800 - Fis:a1 Year Goal 625 person-rem c 600 H E _  ! 400 - 200 - _ j

                              ' '  '1'    '            '    L- l 8JJ L ' ' ' ' LL ' ' ' ' ' ' '

0 - I 01JUN 08JUN 15JUN 22JUN 29JUN i I 1 i

                                                                                                                                                .i 5

Personnel Contaminations Daily Trend 1 2 - - - - - 1 f aJ E a _ Fiscal Year Total 354 PCRs-a a mo Fiscal Year Goal 350 PCAs C8 - 3 t-- 1 ac i, u-  ! 2 o_ [ g 4

                                                                                                                                                  )

j i - 0 '''''1-I - -

                                                                                  ' ' 2 t - ' t J 2 tJ- t ' i ' '

OiJUN OBJUN 15JUN 22JUN 29JUN i I 30000 Contaminated Area. Daily Trend a - Q3 a;

u. 20000 ,-

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                                   \                                                                                                               ,

1 5 w 10000 - i I I, 01JUN 08JUN 15JUN 22JUN 29JUN

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                                                       <   .,                                                                         4 L
                                                                                          / S OUOYAH;. NUCLE,AR PLANT  _
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MW / l 1 SITE PLAN OF THE DAY. ' 1 MEETING AGENDA l l t i FOR  : L WEDNESDAY -

                                                                                                                           ~

JUN IS1989 _________.--____.___________-__-.m___-____m_ _ . _ _ _ _

TATE 610) - ub/14/E9 AllEhDAN f ASE 1 PLAN OF THE DAY DAILY FRIORITY LIST (DPL) The (cliceing iteas are high-prt:r:ty jcbs that "rast go" on the cate shown. ine involved organizations I ust ensure tne necessary preparatory wori is coe;!ete and problers are resolved expeditiously: 1 i e n RESPONSIBLE , SCHEDULE _ tjNii SECTION COMPLETE 0. A. "B" Aux Bldg. Cniller (attached) SySEV 05/30/B9,06/9/69,06/16/89,07/1/B9 5.hN7349CDLEtoFDCT)  !

1. Implement sad (coorcinate witn CDWE outa:e) MODS 06/19/09 C. Switchyard Ereaker 5018 MODS /T&CS
1. Check FCP for leaks 06/08/89,06/12/89
2. Perfore testing jlg 06/15/09,06/19/89 l D. Fifth Vital Battery Action Flan SVSEV 06/13/09
1. Ering ven:cr in '

06/13/89

                          ~             s            .                                                                                                  i E. Establish Methe: ology And Training        )                        OPS /RIENS     07/01/89 icr S!-137.2 GCS Lenage)             j F. Investigate Eightglass Ereakage en NSRs and HP Heaters            SYS/EOP l
1. Sutait Action Flan 06/13/09 l 1
6. Fressurtzer pressure control ,
1. Issue USGD NE 6/01/89,6/15/89 i
. Ke* action plan for unit 2 (rei E765i:5 on 2-FIC-63-340) SYSNSS 06/12/89, 06/13/69 I l

H. Main Centrol Roca WRs inat Re: aire DCR (attached) I 1. A. Centainsent gas (personnel irritant) SYSEV

1. iate & analyze sacie SYSEV 06/22/69
2. Deterstne source ci irritar.ts Si!EV 06/26/89
. Mare recoscenoa:icas SiSEV 06/26/89
4. Evaluate effects on ecaipient D,E 06/16/89 11.

A. '5' Asertas E255357 Lelta F Swit:1 Ml/Mi 06/:0/89

1. To Eetrofit Swit:n B. LCC A:tica Fisn (GRs en U-2 e;:pire 7/:7/Sil 515EV 06/14/E9 1

o ____________.___.________a

                                                                                                 ]

MAIM CONTROL ROOM WR'S THAT REGUIRE A DCR il

                                                                                            ~

l Equipment Sys. WR# Description DCR # Subject Ena Status s n., B276765 1-HTCK-234-175 2315 REMOVE UNUSED EQUIP. ' SMART MANAGEMENT REVIEW HOLD 3783417 1-PT-3-80 3042 OBSOLETE EQUIPMENT BENNETT IN WORK, .. 3080 COMPLETE 6/16/89 i l B768086' 1-PDS-70-94 3020 RESCALE PRESS LOOP BARELS TO DNE FOR STUDY B768007 1-PDS-70-126 B238411 2-SSPS-99 3164 COMPUTER POINTS NOT BRANHAM PLANT MANAGER 1 CONNECTED TO SSPS HASN'T APPROVED I YET B283361 1-FIS-5-99 ALARM WON'T CLEAR B769695 1-FIC-15-43 WILL NOT INDICATE I FLOW i i B283363 1-XA-55-2B/21 ALARM WON'T CLEAR . l l B283391 1-301-F2234Y PT 2234Y UNRELIABLE i 2

 ,                                                                                         AUXILIARY BUILDING CHILLER B ACTION                                                     RESPONSIBILITY COMPLETION DATE           __

t 1. MAT! RIAL,S NEEDED l _ 1 l a. Procure auniliary oil pump ,, _ ,_ l and flow chamber gasket ,

2. REMAINING WORK
a. Install auxiliary oil pump ~

(and oil cleanup system - by York), install oil chamber gasket, and j verif y no leaks in area of oil pump EM 06/15/89

b. Rep air any leaks, change all l; filters EM 06/16/89 {
c. Esacuate to remove moisture j (1st evacuation) EM 06/24/89 )
d. Purge with nitrogen EM 06/24/89 I
e. Evacuate to remove moisture (2nd evacuation), move hold order (Elect.) to energize controls EM 06/26/89
f. Fill oil system, purge with nitrogen, _

move hold order boundary for CHW and RW to wet HX EM/ OPS 06/27/89

g. Final evacuation (3rd evacuation) EM 06/29/89
                                               .h.                   Hold vacuum below 500 microns for 12 hrs.        EM          06/30/89
i. Fill system with 800 16m or R11 refrigerant EM 07/01/89
j. Release hold order OPS 07/01/89
k. Chiller startup (including rotation -

verification), initiate filter change out schedule recommended by York OPS /EM/ 07/01/89 YORK /SYS

3. MISCELLANEOUS PARALLEL ACTIVITIES
a. Lock in motor-compressor coupling and install cover MM 07/01/89
b. Repair pneumatic line on raw water TCV IM 06/26/59 l

l

                                                                                                                                                'e           Q  l v
                                                                                                                                                                ]

i

MENMI'F51  : l.UPLATED 0700 06/14/59 l i A. TECH SPEC sis DVER 5 DAYS SINCE COMPLETION THAT ARE DEllNQUENT TO REVIEW ROOM:  !

                                                                                                                                                  ,   'j pea 10DIC                                                                                                                                              '
                       ..           RESP.      ,PERF.-          WORKCOMPLET!0N
          $18 -       ' UNif'-       SECTIDs   SECTION             DATE                REhARKS
0. 105.5 : OlV) MES ' MES 05/30/89 (DN) (P0312.7799) V. B.'V PERF TEST
02. 2611 0,1,2 MPT M55 03/21/89 (DN) (P0986.7666) VISUAL. INSP. OF T/S FIRE D0 ORS
03. 196.3 0,1,2 MI6 MI6 04/13/89 (P0529.7692) CALIB 0F SHIELD, AUX & SB SASEQUS EFFLUENT 04.:149 0 EHC EHC 05/23/69 (P0437.7781) AB6TS V'ACUUM TEST.

05.'237.l' 0,1,2 ME6 ME6 .i.05/20/69 (P0557.7747) POWERHOUSE C02 FIRE PRDT. SYS TEST 4 , 06. 196' 0,1,2 M16 M16 05/31/89 (P0620.7594) CAL'. OF C0MP. T.S. INST. , 07. 243- 0 M16 M16 06/01/89 (P0755.7822) CHN CAL OF W6DS - DIY6EN & HYDRDBEN ANALY

08. 234.3 0,1,2 ME6 MES 06/02/E9 (P0550.7763) T.S. FIRE DETECTORS
09. 166.45 0 MTU MTU - 06/04/69 (P9004.7824) FULL STR. OF D/6 ERCW CK. VLVS.
10. 166.8 2 MTU MTU 06/05/09 (P0137.7823) INC. FRED. TEST OF CAT. ALB VLVS.- t

!  !!. 190. 0,1,2 FPU. FPU 06/07/89 (PO484.7827) FIRE HOSE STA INV

12. 102E/M IB ME6 ME6 06/07/89 (P0808.7829) D/6 MD ELECT INSP
13. 237.2 1,2 ME6 ME5 06/02/69 (P0558.7764) DI6 BLD6 C02 FIRE PROT SYS
14. 128.3 1 MTU MTU 06/07/89 (P0048.7815) RES iT REM PMP (15) GTR lSPECIAL l 01. 127 2 NUC DSV 04/08/89 (00270.7769.4) RSC & PIR. TEMP, AND FRESSURE
02. 234.6 0,1,2 hE6 ME6 05/14/69 (P0553.7732.1) TECH SPEC FIRE DETECTORS
03. 275.2 0,2 ME6 ME6 05/15/59 (P0732.7768.1) NON-CLASS lE LDAD CKT EKRS
04. 94.48 1 MI6 M16 05/24/89 (P1608.7215.1) CHN CAL OF ST 6EN MISMATCli (CHA 11 RACK 6)
07. 94.44 1 MI6 MI6 05/25/E9 (F1630.7815.1) CHN CAL GF S/6 MISMATCH

! 08. 100 0 ME6 MES 05/22/E9 (P0361.7810.1) V.B. V l

09. 78 1 NUC huC 06/02/69 (F0005.7824.1) FWR RG NEUIRON FLUI CHN CAL

, 10. 52 0,2 CEM CEM 06/06/89 (P1603.7E28.1) hD CEM REQUIREMENTS - ' ' 11. 261 0,1,2 M?T 06/06/E9 (F0986.7823.1) VIS. IhSP 0F T.S. FIRE DOORS

12. 261 0,1,2 MPT 06/05/29 (P09E6.7813.1) VIS. INSP GF T. S. FIRE DOCRS l 13. 414 1,2 CEM CEM 06/07/69 (C0240.77E3.1) T B Sur.P DR ERCW LISCHARGE iB. TECH SPEC DELINQUENT sis (PERFORMANCE) i RESP. PERF. SCHED. EIT. NRC ATTACHMENT S!l UNIT SECT. SECT. DATE DATE (SDN) DATE 15 RECEIVED REMARKS
01. 171 0,1,2 FFU FFU 04/01/8 04/21/E9 06/30/89- YES PER10DIC FLU 5Hlh6 & CHLOR 0F FIRE SYS
02. 185 0,1 FFU FFU 10/23/EE  !!/22/28 OB/01/E9 YES FIRE HOSE OFERASILITY 03, 125 0,2 FPU FPU 11/18/E3 12/10/63 09/23/E9 YES FIRE H0EE DiERA31LITY
04. 1029(EE) 0,2(Al MPT MM6 03/22/69 04/21/E9 10/0E/B9 YES D/6MECdINSP
05. 303 0 ME6 ME6 04/22/B9 05/22/89 09/19/89 YES SPARE 125V VliAL BATT CHRBR FERF TEST
06. 234.1 0,1,2 ME6 ME6 05/03/69 05/23/69 07/06/69 YES TECH SFEC FIFE DETECTORS
  '07.'170.2               0,1(B) MI6        MI6       05/09/69     06/05/69      09/10/89           ND         (P0465.7800) PER10DIC CAL 0F STiV D/6
08. 234.4 0,1,2 MES ME6 05/22/E9 06/11/B9 08/07/E9 YES (P0551.7813) TS FIRE DETECTORS-09.'204.2 2 EHC JI6 06/09/89 06/14/09 06/19/89. h0 (P0444.7831) Fi FOR RAD MON SYS
10. 28 2(A) E'nC EHC 06/05/B9 06/15/69 07/14/69 ND (P0040,7227) C0kT AIR RETURN FANS
   !!.165                  2         M16     Kl6       06/10/E9     06/15/69      06/23/89           ND         (P0403.7B32) CHN FT OF SIS ACC TNK k

.dE G l'F5 ? lH ATED Or00 06/14/59 C. NCN-TECH sis 30 DAYS SINCE COMPLETION THAT ARE DELINQUENT TO REVIEW R00M PER10Dit RESP, PERF. WORK COMPLETION S!l ' UN11'. SECTION SEC10N DATE REMARKS I SPECIAL RESP, PERF. WORK C0MPLET10N S!i UNIT SECTION SECION DATE REMARKS >

01. 200 0,2 MIS MI6 05/04/S9 (P0450.7683.1) PER CALIB C L VC SYS
02. 623 0 SGS SDS 05/11/89 (F0374.7502.1) C. R. ACCESS CONTROL SYS.
03. 597.3 2 MIS MIG ( ) VENTILAT!DN SYSTEM CAL.
9. NON-TECH DELINGUENT sis (PERFORMANCE)

RESP. PERF. SCHED. EIT. IIPRO.1ECTED ATTACHNENT Sll UNIT SECT. SECT. DATE DATE PERF. 15 RECE!VED REMARKS j

01. 736 0 EHC MIS 5/26/88 08/25/E8 07/30/E9 YES RAD MON CHAN CAL (REVISION) 02, 736.2 0 EHC MI6 06/02/88 09/02/98 06/20/B9 YES PARTICULATE RAN MON CAL (REVISION) <
03. 736.4 0,1 EHC MI6 06/15/EB 10/i5/EB 07/16/E9 YES RAD MON CHAN CAL (REVISION)
04. 506.10 0 EHC EHC 01/10/G9 02/09/99 18 YES AB SUMP VENT E!H FILTER 11
05. 597.3 0,1 MI6 M16 09/22/88 01/27/S9 07/30/E9 YES VENTILAT!DNSYSTEMCAL i
06. 595 0,1,2 MIS MI6 01/15/B9 04/14/E9 06/22/89 YES CAllB. OF THE AB HEATIN5 (BED 5 REVISED) i
07. 6E5 i EHC MI5 01/19/07 04/lB/E9 07/15/69 YES CHN CALIB FOR LOW RANGE ACC RAD I 05, 506.19 0 EHC EHC 04/16/69 05/16/F7 YES TD LE CANCELLED.lTD EE Pfl; ECN 6022)
01. 596 2 ME5 MES 05/14/E9 06/13/29 06/01/E9 YES BEN CORE MON GTRLY CALIBRATION 10, 205.1 0,1 MI6 MI6 02/25/59 05/27/B9 07/15/E9 YES CVCSFER10DICCAllBRATION
11. 208.1 0,2 M16 MI6 02/25/E9 05/27/E9 07/15/Ei YES CVCS FERIDDIC CALIBRATION
12. 195 2 MIS MI6 04/20/E9 05/30/B9 06/20/59 YES AFW FLUID COMP & FLOW SW CAL i
13. 1EB 0 MIS MI6 03/07/87 06/07/29 07/15/E9 YES FER CAL 0F ESTS 16, 610 1,2 MI6 MIS 03/0E/E9 06/07/29 07/07/E9 YE9
15. 515 0 MI6 MI6 04/05/E9 06/05/E9 07/05/E9 iES (F0919) CAL 0F AL HVAC SYSTEM
16. 635 0 S;S SGS 05/25/B9 06/11/B9 WD (F9007.78161 PROT. & VITAL ACCESS LST
17. 195 0,1 MI6 MI6 05/04/E9 06/13/E9 ND (P0504.7795) FER. CAL. 0F FLUID C05.P.
18. 566 1,2 hSS NSS 05/14/29 05/13/69 ND (F0B01.7605) ERCW VER. TEST 18 CALL EiEN HYAiil AT EIT:NSION 6436 TO HAVE FROJELTED PERFORMANCE DATES ADIED.

I S1-261 hs P205770 HOLD uni!L E0iH UNIT 1 AB GEN E1HAUST FAh5 ARE OPEFAELE (hR B 256553 DN 19 AF5ES ON MATERIAL HDLD 2690EA FOR RESISTOR), i S!-597.3 DN HDLD DUE TO H E256553 II kR F215116 CN MATERIAL riDLD-1.N. 89-636 5

                           . a ._ .       ...                                                                                  .           ._      .(

h51 NISH IrSda 400T98 bb $b SDRT BREAKS E START E FIN 5H NODE C/EE

.To MTE 137UNB9                                                             TNT E Pv4L e i DAYt9 SON TEN DAY UORK L TEST SUM %RY JUNE 13l 14           15 l ib         17 l (B          19 l 20         21 l 22       23
      .SIGNIFICANT;U-1,. FIELDWORK L TEST l            l
         .24MAYB9 D=14 4 E                                                              I 193UN89 __                              , , ,

3P8017805 SI-5bb /NSS/ERCW FLOW VERIFICATION TEST SI-5bb NEEDS FOR THE A TR TEST OF SI-5bb THE FOLLOWING B TR CHILLER PCKG NEED TO BE INSERVICE WITH THE A TR PKG OUT-OF SERV B TR CNTL BLD A/C CHILLER PKG (732 CNTL BLD) hTRkSkRUMkN I e kNbI EkkbN i M 2 - l. 93UNB9' D=24 J: 14JUN89 l b27802450 MEG /1-MTRB-Ob2-0232-B/iB-B BORIC ACID PUMP MOTOR 1B HAS HIGH VIBRATION, REPLACE MOTOR

                 ..                  t                            [

15JUN89 ' D=b [] 153UNB9 l 101107837 SI-90.5 / MIG / FUNCTIONAL TEST OF AT/TAVG CHAtNE LRACK III,10 RACK 10 (T-b8-44) 203UN89. D=0 2BJUN89 102297841 SI-90.b- / MIG / REACTOR TRIP INSTRUMENTATION QUAR i TERLY FUNCTIONAL TESTS (RACK 11) RACK 11 , 1 I 2BJUN89 D=8 20JUN89 193927842 SI-130.2.1/MTU/ MOTOR DRIVEN AUXILIARY FEEDWATER PUMP 1A-A GUARTERLY OPERABILITY TEST  ! l I i' 21JUN89 D*b O 217UN89 102357843 SI-90.8 / MIG / REACTOR TRIP INSTRUMENTATION MONT HLY FUNCTIONAL TEST (SSPS) SSPS  ; 22JUN89 D=b[]227UN89 102307844 SI-98.7 / MIG / FUNCTIONAL TEST OF DELTA T/TAVG C _ HANNEL IV RACK 13 (T-b8-67) RACK 13 i '~ SIGNIFICANT U-2 FIELDWORK L TEST I I 14JUN89 D=4 0 143DN89 l 202140B00 INSTALL TEST GAUGES FOR SI-4b. 3 L . 4 14JUNB9 D=4 0 14JUN89 202147830 SI-4b.3 /MTU/ COMPONENT COOLING WATER PUMP 2A-A CCS PUMP 1 - 14JUN89 D=4 0 143UNS9 202207830 SI-46.4 /MTU/ COMPONENT COOLING WATER PUMP 2B-B CCS PUMP , I 14JUN89 I D= b [] 14 7UN89

                                                                                                                                                      ]

20280783h SI-90.82 / MIG / REACTOR TRIP INSTRUMENTATION MONT I HLY FUNCTIONAL TEST (SSPS) l SSPS I / s i 153UN89 D=4 0 157UN89 288147835 SI-2b8

                                                                               / MIG / CHANNEL FUNCTIONAL TEST OF ESF IN STRUMENTATION F R A T0MATIC SWITCHOVER TO CONTAI NMENT SUMP (MON HLY I                e                                                   I 193UN89 D=4 [ 1970N89 2023b7823 SL-90.12 / MIG / REACTOR TRIP INSTRUMENTATION FUNC                     i TIONAL TEST OF WT/TAVG CHANNEL I RACK 2 (T-b8-2)

RACK 2 T-68 i i l 197UN89 D=0 [] 19JUN89 l 208737838 SI-40 /NTU/ CENTRIFUGAL CHARGING PUMP ' PART A l 20JUN89 D=8 ((] 20JUNB9 203b400b9 SI-37.4 CONTAINMENT SPRAY PUMP 2B-B INSTALL TEST GAUGES b-20-89 i TEST b-21-89 II i

g

     'I                                                                                                                                           I SNEbbE b5 b G SCN TEN DAY WORK L TEST Sutt%RY
.                                                                                        JUNE                                                                          !

13l 14 15 l ib 17 l 18 19 l 20 21 l 22 ! 23 l - SIGNIFICANT U-2 FIELDWORK L. TEST

                                      't                                              203UN89 D=8 [] 203UN89
                                          '4,                                   -203827841 SI-129.4 /MTU/ EMERGENCY CORE COOLING SAFETY IhD -

ECTION PUMP 2A-A QUARTERLY OPERABILITY TEST l t i 1 l' 223 DN8'9 D=8 [] 22JUNB9 3 211077644 SI-129.5 /MTU/ EMERGENCY CORE COOLING SAFETY-INJ ; ECTION PUMP 2B-B. QUARTERLY OPERABILITY TEST - SIGNIFICANT CORMON FIELDWORK L TEST

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                                              $>13JUNB9                -    -

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                                 ,*               () 143DN89                                                                                                           i' 82158 REMOVE 2-44 DIESEL GENERATOR FROM SERVICE 14JUN89     D=4 0 14JUN89                                                                                                          ,

I 312930B03 INSTALL TEST GAUGES FOR SI-73.4 { I i  : .l l 1 157UNB9 D=4 0 6JUN89 l l 1 301830003 INSTALL TEST GAUGES FOR SI-45 l i i l 157UN89 D=4 0 153UN89- l I I 310930002 INSTALL i TEST  ; GAUGES FOR j SI-73.3 2A-A g FIRE PUMP ' 153UN89. D=8 []'153DNB9 l l l . i 312937832 SI-73.4 /FPU/F?ti PUMP 2B-B PERFORMANCE TEST  ; PUMP 2B-E  ! l i ibJUN89 D=8 [] ibJUN89 ^ 310937810 SI-73.3 /MTU/ FIRE PUMP 2A-A PERFORMANCE TEST PUMP 2A-A-i ib3UN89 D=8 [] ibJUN89 deg2pggggghgggg.9gg7/MTU/ ESSENTIAL RAW COOLING WATER PUMP i l ibJUN89 D*8 O lbJUN89 l 310527837 SI-45.7 /MTU/ ESSENTIAL RAW COOLING WATER PUMP j 0-A PERFORMANCE TEST I ibJUN89 D=8 0 ibJuN89 1 303547837 BI-45.7 /MTU/ESSENTI^J. "AW COOLING UATER PUMP K-A PERFORMANCE (EST l ibJUN89 D=8 [] ibJUN89 l l 301837837 SI-45.1 /MTU/ ESSENTIAL RAW COOLING WATER PUMP i J-A PERFORMANCE TEST

                                                                                          <> 18JUN89 77100 MMG-0-CDWE-0UTAGE-ACTIVITY I                  j 193UN89 ID=24 l197UN89                                l 412210142 1221-E'. REINSTALL HANGERS GROUT HGR "B" AUX BLDG CHILLER
                                                                                                  <> 297,N89 12101 rUX STEAM HEADER DUTAGE 4> 21JUN89                                       l 821b4 REMOVE 2-BB DIESEL GENERATOR FROM SERVICE '

i , 213DN89 D=4 0 217UN89

                                                                                                         . 310920803 INSTALL TEST GAUGES FOR SI-73.2 4                   1 223UN89 D=8 [] 223UN89 312927878 SI-73.2                 /FPU/ FIRE PUMP 1B-B PERFORMANCE TES7 PUMP 1B-D
                                                                                                                                                                 '7,

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i E l hYh30(k'NN[H NT . SDN TEN DAY WORK L TEST SUtT%RY

  • JUNE' 13l 14 15 l 16 17 l 16 19 l 20 21 l 22 l 23

- VENTILATION ACTIVITIES

             -           1143ON89 D=56                                     223UN89 l-
                 -       522854740 MEG /0-CHR-311-012b- / CONTROL ROOM CHILLER A 0-CHR-312-012b , SUPPORT DUNHAM-BUSH REPRESENTATI                                                l' f

VE IN PERFORMING 50,800 HOUR COMPRESSOR MAINTENA s,

                             'PM 1744 W/W PM 1741 W/W 285444 W/W 294069 W/W 238374 RESCHEDULE FOR DUNHAN REPRESENTATIVE.                                               '

4 I-18JUN89 D=1 l 18JUN89 301597840 SI-24 /OSV/ CONTROL ROOM AIR CLEAN UP SUBSYST ATA SHE,ET "A" 183bN89 D=11 O 187UN89 30it>37840 91-17 /OSV/ CONTAINMENT SHIELD BUILDING EMERG ' ENCY GAS TREATMENT SYSTEM FLOW '- 1)ATA SHEET "A" i 183DN89 'D=11 O 183UN89 301617840 SI-21 /OSV/ AUXILIARY' BUILDING GAS TREATHENT SYSTEM DATA SHEET "A"

                         .                                                23JUNB9 D=5bI         29JUN89 522854750 MEG /8-CHR-311-0141- / CONTROL ROOM CHILLER B            4 0-CHR-311-0141- SUPPORT DUNHAM-BUSH REPRESENTATI

{NPERFORMIND50,000HOURCOMPRESSORMAINTENA W/W WR B283295

                                                      .W/W 795151 W/W 283285 W/W 285471 0

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1 TACF'S REQUIRfNC NE OUTPUT i DCNDCN DCRNO TACF NO NE ENCR COMMENTS ~ j 183 6611 87-033-014 S. Rhyne Need DCN issued scheduled 7-5 890 2819 " 86-006-068 R. Lehrner Implementing WR package lost, need DNE justification for no ._ l documentation or DCN revised to J install new temperature element. 1 893 2807 85-073-077 R. Lehence Need FDCN 1363A approved. 899 81-529-14 R. Lehener Need DCN revised to include elect dwgs. - 1250 2985, 79-633-079 R. Lehener Need FDCN 1365A approved by NE to allow removal of grating above new fuel vault 5739 1704 81-467-062 R. Hall Need heat trace drawing issued (DWG ~ 74-90A Sht 7, Contract 86004) 5758 741 82-258-067 J. Staub Need drawings issued to reflect j logic change to ERCW 1evel system 6217 1541 89-032-062 R. Lehener Need FCR's 8242 and 8243 (may require issuance of DCN 974). 7328 82-275-77 P. Haddox Need check valve and valve operator 82-266-77 extension arm procured. 176 85-022-241 R. Lehence H/F DNE to issue DCN - (7-12-89 937 84-107-3 C. Peet H/F DNE to approve FDCN 1375 966 86-007-317 R. Lehener H/F DNE to approve FDCN # 1315. , Will require revision to safety evaluate. 6-30-89 974 87-004-234 R. Lehener DNE to issue DCN (7-7-89). 5061 85-067-25 R. Lehener H/F DNE to revise safety analysis. 85-066-25 Due 6-30 5848 81-458-67 R. Lehener H/F DNE to issue dwg. and cable 81-465-27 routing. Walkdown to be complete 1 6/13. Need material 6027 85-070-30 R. Lehrner Existing ECN 6027 does not cover

        ~                                                            TACF. Need revised ECN 6027 or new                  I DCN issued. 6-28-89                                 '

6220 82-229-57 R. Lehrner H/F issue of Elect /HVAC Dwns. Due 7/21 6105 87-22-247 R. Lehener Walkdown to be performed by UE - . Dwgs to be issued (6-21-89) 0465D 12 w

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