ML20202F742

Forwards twenty-four Discrepancy Repts Identified During Review Activities for Independent Corrective Action Verification Program

ML20202F742
Person / Time
Site:	Millstone
Issue date:	12/05/1997
From:	Schopfer D SARGENT & LUNDY, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
9583-100, NUDOCS 9712090215
Download: ML20202F742 (41)

Text

' ' . -

.' /

i sarger(nts 5)Lundy '"

f Don K. Schopter '

NiISE December 5,1997 Project No. 9583-100 Docket No. 50 423 Northeast Nuclear Energy Company Millstone Nuclear Power Station, Unit No. 3 Independent Corrective Action Verification Program United States Nuclear Regulatory Commissica Attention: Document ControlDesk Washington, D.C. 20$55 l

I have enclosed the following twenty four (24) discrepancy reports (DRs) identified during our review activities for the ICAVP. These DRs are being distributed in accordance with the Communications Protocol, PI MP3-01.

DR No, DR MP3-0385 DR No. DR-MP3-0660 DR No. DR MP3-0686 DR No. DR-MP3-0454 DR No. DR-MP3-0666 DR No. DR-MP3 0687 DR No. DR MP3-0583 DR No. DR-MP3-0667 DR No. DR MP3-%89 DR No. DR-MP3-0617 DR No. DR-MP3-0668 DR No. DR MP3 0694 I DR No, DR MP3 %20 DR No. DR-MP3-0669 DR No. DR MP3-06%

DR No. DR MP3-0629 DR No. DR MP3 0671 DR No. DR MP3 %97 DR No. DR MP3 0630 DR No. DR MP3-%72 DR No. DR MP3-0705 DRNo.DR MP3 0655 DR No. DR-MP3-0673 DR No. DR-MP3-0706 hense direct any questions to me at (312) 269-6078.

Yours very truly, 1

,[ d  : "

9712090215 971205 D. K. Se opfer DR ADOCK O y43 Vice President and ICAVP Manager DKS:spr Enclosures - . - ' ' ']

A00 J /i

~

Copies: VJ E. Imbro (1/l) Deputy Director, ICAVP Oversight hllllllll]llEjlll@l T. Concannon (1/1) Nuclear Energy Advisory Council J. Fougere (1/1) NU nrWevpunn97wI205-a doc 55 East Montce Street . Chicago. !L 60603 5780 USA

• 312 269-2000

e' Northeast utsties ICAVP DR No. DR MP3'0388 Mmetone Unit 3 Discrepancy Report Review eveup: system DaVAUD i Rev6ew teament: system Deegi ,,,,

Dissipline: Eleomosi Desiri O von Diseesponey Types calculomon s,_-_ 7 = :Dox gg NRc signiseense level: 3 Date faxed le W:

Date Puhelehed: 12Ws7

. cii Calculation NL 038 (Station Services Studies Voltage Proflies)

Descrire en: Calculation NL 038 uses the OPAL data base to calculate the voltages in the 6000,4160, and 480 voit portions of the electrical auxilary system. Steady state calculations are performed using the Power Technologies' PSS/U program, while transient voltages are calculated using the PSS/E program.

Diversity factors are used to determine the loading of the 480 l voit buses. The basis for some of the diversity and demand fadors used in the calculatinn are obtained from NL 025. No reference is given for the diversity fador in Assumption 5a. The basis for the diversity factors is not explained in this calculation and additional backup material was not provided in NL 025. See Discrepancy Report DR MP3-0690 on NL 025.

l Assumption 13 determined the maximum generator voltage based on the tums ratio of the main transformer. However, the generator voltage will also be affected by the voltage drop i through the transformer caused by load current. Therefore, the maximum generator voltage is a function of the generator loading and main transformer impedance as well as the main transformer tums ratio and switchyard voltage. This may have the effect of increasing the maximum generator voltage. The effect of this on the maximum voltages of the loads should be evaluat6d.

The calculation of me',or locked rotor currents is not consistent.

The per unit loc 6d rotor current of 6.5 per unit is sometimes applied to the l'ameplate rating of an Individual load (normal practice) and sometimes is applied to the " demand kVA'. The reasoning for calculating the starting kVA differently for differing loads should be documented. The locked rotor current value of 6.5 per unit of the rated current is reasonable.

There is an implied conversion factor of 1 horsepower of rated output being equivalent of 1 kVA of electricalload input in Appendix V. Tnis is a reasonable approximation, but it should be documented. In other cases, such as 3HCV*ACU1 A, a different f actor is used, which is also not documented. The value of starting kVA for 3HVC'FLT1 A 3HVK P4A, etc. is different from tne other loads. The reason for the difference in starting current should also be documer'ind The extra 4 kVA resistive load used on page 3 of Attachment V should be docurnented. On page 12 of Attachment V, the kW load is computed using a power factor of 0.65 for all loads. Elsewhere in Attachment V, a power factor of 0.85 is und for motor loads and a power factor of 0.9 is used for resistive loads. This is an apparent incons!stency that should 2 = 2"~'E2I0i # t 2= 2 2 ^ f# I amm 2 32 =#hh 4

4 Northeast Utilities ICAVP DR No. DR MP3 0388 Millstone Unit 3 Discrepancy Report The PSS/E runs used to calculate transient voltages included dynamic models of various motors. Based on the data listing, there were only ovo rotor circuits included in the indudion motor models. Fitting the parameters of an induction motor model to the adual motor charaderistics requires considerable trial and error, and if two rotor circt,its are used, some compromises in the i modeling may be requried at certain speeds. The accuracy of the motor models used was not documented. Documentation comparing the behavior of the PSS/E models with the adual motor characteristics should be provided.

According to assumption 1 on page 7, all 480 voit bus ties are assumed open. However, operation with one of the two sources to a double ended unit substation out of service and the bus tie 4

closed is more severe. Emergency operation with the bus tie closed should be examined for key buses. Assumption $b states that the load on motor control centers during a LOCA is the same as during normal operation. However, since many of the loads on the Class 1E portion of the auxiliary system are required only for mitigating a LOCA, this assumption needs to be sxamined for the Class 1E motor control centers.

There are several minor errors in transcribing the voltage results of Computer Run 605 to the table in Attachment 1:

Bus Computer Run Value Table Value 32Y 0.910 0.911 34C172 0.897 0.898 34C22 0.900 0.901 325TL 0.914 0.915 32R 0.917 0.918 322RL 0.916 0.917 34C92 0.899 0.900 There are several minor enors in transcribing the voltage results of Computer Run 606 to the table in Attachment 1:

4 Bus Computer Run Value Table Value 32Y 0.910 0.911 34C172 0.897 0.898 34C22 0.900 0.901 325TL 0.914 0.915 32R 0.917 0.918 PrWed 12/547 2.15.34 PM Page 2 or 4

.. . . _ . _ -. . -- -- . _ _ _ _ _ . _. .-, .~.

4 g-Northesst Utilities ICAVP DR No. DR MP3 0388 Millstone Unit 3 Discrepancy Report 321RL 0.914 0.915 There is an error in transcribing the volta 0e data from Computer Run 614 to the table in Attaci. ment 1:

Bus Computer Run Value Table Value 34D82 0.8657 0.8634 _,

There are several errors in transcribing the voltage data from Computer Run 615 to the table in Attachment 1: ,

Bus Cornputer Run Value Table Value 34C212 0.901 0.902 32T 0.918 0.919 324TL 0.915 0.916 325TL 0.916 0.917 321RL 0.916 0.917 321UL 0.907 0.906 There are several errors in transcribing the voltage data from Computer Run 616 to the table in Attachment 1:

Bus Computer Run Value Table Value 32Y 0.912 0.913 34C212 0.901 0.902 32T 0.918 0.919 324TL 0.915 0.916 There are several errors in transcribing the voltage data from Computer Run 619 to the table in Attachment 1:

Bus Computer Run Value Table Value 32Y 0.947 0.948 34C172 0.932 0.933 32R 0.953 0.954 322RL 0.952 0.953 There are severa! errors in transcribing the voltage data from Computer Run 620 to the table in Attachment 1:

Printed 12597 2;15:35 PM Prpe 3 of 4

9 Northeast Utilities ICAVP DR NL DR MP3 4344 Millstone unit 3 Discrepancy Report

- 2 Bus Computer Run Value Table Value 34C182 0.932 0.933 34C22 0.935 0.936 322TL 0.952 0.953 323TL 0.952 0.953

! 34C72 0.933 0.934 34C92 0.934 0.935 The terminal voltage values taken from Computer Run 614 on pages 3 and 4 of Attachment VI do not match those in the corresponding PSS/U report from Attachment 1.

The data for some of the large loads on page 13 of Attachment V do not match the corresponding values on pages 14 and 20 of l the same attachment.

. Rev6ew

vand invand Needed Date Inidator

Dioethe, G. Wilhem Q Q Q 11/1s/97 VT Lead: Nerl. Arthony A Q Q Q 11/1&B7 VT Mgr: Schapler. Don K O O O 12/1/87 IRC Chmn: Singh. Anand K Q Q Q 12/4/97 Date:

DNAUD:

Date:

4 RESOLUTION.

Previously identeRed by nut O Yes @ No Non D6ecrepent Condition?Q Yes lei No RMd% PendingtO Y @ No e - % un, ev.de O Yes @ No Review Acceptelde Not Acceptable Needed Date g g,g , .

VT Leed: Nort, Ardhony A VT M9r: Schoph, Don K 1RC Chmn: Singh, Anand K g g g Date:

SL Comnents:

Printed 12/547 2.15:36 PM Page 4 or 4

4 Northeast Utilities ICAVP DR No. DR-MP34464 Millstone Unit 3 Discrepancy Report Review Group: system DR VAUD Revtew Element: system Doetn g

06scipline: M Dawn () y,,

Diecroposey Type: C*% gg i spa " Rss NRCs:7 =s levet: 3 Date faxed to Nu:

Date Published: 12/s/97 r1 26 Calculation P(R) 1186 h- - The purpose of Calculation P(R) 1186, Rev.1/CCN 2 is to i determine the design pressures and temperatures for RSS piplag. 1 Five discrepancies were 6dentified in Calculation P(R) 1186:

1. The elevation of the RSS pump suction 29' 8", is incorrectly used as the elevation of the RSS pump discharge, which is 23'-

3*, This error adds 6' 5* of head (2.7 psi) to these pressures for i all modes of operation. For the reasons identified in discrepancy 2, below, this error is not significant.

2. A nominal water density of 62.34 lbm/ft3 is used to compute system pressures, rather than the adual densities of 62.426 lbm/ft3 at 40F,60.07 lbm/ft3 at 201.5F. This results in errors of

+0.6 to -0.4 psi. When combined with the error in the RSS pump discharge elevation (identified in discrepancy 1, above) the total error is from +2 to +11 psi, it is the engineering judgment of the reviewer that overestimating operating pressure by 12 psi is conservative and results in negligible errors in computing stresses in standard wall piping. Therefore the errors in density and pump discharge elevation ider41fico in discrepancies 1 and 2 do not affect the affect the vall(ty of the piping stress data package, 3, CCN 2 to P(R) 1186 acknowledges that the RSS pump at shutoff is capable of producing 300 psig pressures in RSS process piping botween the pumps and the spectacle flanges (3-RSS-010-3,5,8,9,10,11,13,14,15,18,19 & 20,3-RSS 005-54 & 55, and 3 RSS 004122 & 124), it then states that the oesign pressure is 275 psig from the pumps to the containment isolation valves and 225 psig from the isolation valves to the spectacle flanges, and it states that these design pressures are acceptable according to an evaluation in E&DCRs T P 07894 and 07939. Th6 evaluations in E&DCRs T P 07894 and 07939 address component design pressures and piping minimum wall, but do not address the validity of the piping design pressures for the system line list. The design pressures for RSS piping from the pumps to the spectacle flanges in P(R) 1186 and in the line list are inconsistent with statements in P(R) 1186 that these lines are subjemo pump shutoff head (See volded DR MP3-0501),

4. Valves RSS MOV'8837A&B ar.d 8838AAB, which connect the RSS supply to the HHSI pump suction (via the RHS system),

are closed during ECCS Injection Mode, in this mode, according to P(R) 1192, Rev. O the RHS pump can operate at its shutoff head and pressurize Lines 3RSS-006-040,041,047 and 053 to Prtnted 12597 2:16 25 PM A

, Pho 1 of 2

l Northeast Utilities ICAVP DR No, DR MP34484 l

Millstone Unit 3 Discrepancy Report pressure for these lines as 600 psig. Calculation P(R) 1186 states that the design pressure of all RSS lines downstream of the RSS HX and upstream of MOVs 20A, B, C, and D is only 275 psig. P(R) 1186 should be changed to include the determination of the 600 psig design pressure in Lines 3RSS-006-040,041, l 047 and 053, or to reference an RHS system calculation which does this (See volded DR MP3 0501).

5. During shutdown cooling mode operation of RHS, according l

to P(R) 1192, Lines 3RSS-006-0RD,041,047 and 053 may reach temperatures of 350F. Rev.1 of Calculation P(R) 1186 states that the design temperature for all RSS lines downstream of the RSS HX is 260F, P(R) 1186 should be changed to include the determination of the 350F design temperature in Lines 3RSS-006-040,041,047 and 053, or to reference an RHC system calculation which does this.

Review Valid invalid Needed Dele inatiator: Waketend, J. F. tir2irer O O O VT Lead: Neri, Anthony A O O O $ t/22.37 VT Mgt: Schopfer, Don K IRC Chmn: Singh. Arwd K Q O O 12/i/s7 Q Q Q 12/497 Date:

INVALID:

Date:

ftEsOLUTloN:

Prov6ously hientemed by NU7 Q Yes (e) No Non Diecrepent Condenon?O Yes (G) No Ph%Pending?O Yes @ No n.noimumunr.emos?O Yes (5) No Review g AW% Not Acceptable Needed Date VT Leed: Nerf, Anthony A VT Mgr: Schopfer, Don K O O O 1RC Chmn: Smgh, Anand K Date:

sL Commente:

Printed 12/597 2.i6.31 PM Page 2 of 2

Northeast Utilities ICAVP DR No. DR MP3 0883 Millstone Unit 3 Discrepancy Report ,

l l j movtow oreup: system DRvAuD i Review timment: s)alem Design 06*eip86ne: N Desien g

" - . mi Type: N% 'g)y,, g s, a a Rst ,

j NRo siensasenselevel: 3 DateF W le E Date published.12497 l

. ~

ii Calculation US(B) 326 Deeerspelen: The purpose of Calculation US(B) 326, Rev.1 is to demonstrete

, that there would be an adequate supply of sump water to the 1 RSS pumps for a postulated design basis large break or small  ;

j break LOCA. The sump water supply determination includes i evueustion of insulation debris buildup on the sump fine mesh

, screens, containment spray holdup and time delay, and RSS

pump required NPSH.  ;

i i Ten discrepancies were identified in Calculation US(B) 326:

! i

1. The specialized LOCTIC run used in calculation US(B) 326 models a PSDER break with initial conditions and blowdown 3 based on Reference 45 (Calculation US(B) 273, Rev. 3) (pages

33 of US(B) 326). However Revision 5 of US(B) 273 provides -

new LOCA analyses.

2. Figure 9 on page 26 of calculation US(B)-326 incorrectly labels the width of :reens F2 (17.68") and F5 (36"). The corted i

width of F2 is 26 7/8". The co rect width of F5 is 28'(Drawing ES.

53AM). However, the calculation is based on the correct width

for F2 The areas of screens F4 and F5 are based on a width of 28', page 30, (the F5 width). The calculation for the screen area requires refinement for more accuracy. See also comments 3 and 8,

3. The length of the angle steel around the perimoter of screen F6 is incorrectly calculated as 9.52' on page 30. The total length should include another horizontal section of length 1.25' for a total length of 10.77'. The increase in angle length would reduce the F6 screen area. The calculation for the screen area requires refinement for more accuracy.

4. Based on Reference 4 (Calculation US(B) 249, Rev. 3, CCN

, 1) (note: calculation US(B) 326 is based on revision 2 of US(B).

249), the water fill rate above elevation (-) 24' 6" av op to elevation (-)11' 3' is 8138 gallin and not 7650.97 gal /in (page 51 of US(B)-326). Additionally, the IOC dated 3/21/86 concludes that previously misinterpreted LOCTIC output (there is actually ,

y less water on the floor) is acceptable since the fill rate above (-)

24' 6" is more closer to 7200 gatlin. However, there is no

- calculation to support the smaller and less conservative fill rate of 7200 gal /in.

1

5. The total volume of 1663.5 gallons (page $5) for the RSS pumps, suction pipes and suction inlets includes a suction pipe Pnnled 12/5/97 2:18.00 PM

. _. .. -.. -_.-_ ..JasedeM4eference 2 (C9 Yafel or 3

_ ~ _ _ _ , _ ..__._ _ . _ _ _ _ _ _ _- - . - - . . - _.

ICAVP R No,DR 4P W 83 Normoset Ummes mmetern Unit a Discrepancy Repwt

_ 232, Rev. 2). A prev 6ous comment with to0erds to calculation ES.

232 stated that suction pipe voGume is considerably larger than

- 84.4 Gallons. Addnionally, the RSS volume tabulated on pape 86 of US(8) 326 is based on Reference 1 (Calculation ES 231, Rev.1). The current revision of ES 231 le 2. The results tabulated on pape 26 of ES 231. Rev. 2 for the RSS volumes are larger than those used in US(B) 326. The empty RSS volume of 18793 gallons (page 86) would be affected as would

- the fill times shown on page 67 as a result of this disotopancy. -

i

6. The value for 'TDWSPY' at 724 seconds (483,000 lb) in Table

! 8 on pa0s 57 is transposed in equation 3 to 436,000 lb. The

! smaller number is conservative since it results in less water on l the floor and a less not submerged screen area at 724 seconds.-

l

7. The trough elevation on psee 88 should be based on a horizontal dblance to point A (The distance betwoon the reactor cavity wall and the point in coedainment sump trou0h where Insulation debris is assumed to land) of 13.08' and not 33.88' (the distance of 33.68' was soleded because it is below the conter of a steam Generator). This discrepancy results in an elevation -

d6fference at point A of appmimately 0.08', This difference would have a slight affect on the approach velocity, however the difference is not expected to affect the results.

8. The not fine screen area calculated on pa0e 100 at time -

equal to 2000 seconds is 266.4 ft2 at a water elevation of (-)

20.4' ((-)24.5 + 4.1) (psee 99). However, from pa0e 25 the top of the fine screens la, at elevation (-) 20.21' and the not wetted area at 100% submergence is 244.2 ft2 (pape 69). The total not soroon area calculation based on the water elevation above (-)

24.5' (pa0e 100) over estimates the not fine screen wetted area.

Additionally, the cticulation on pa0e 31 for the total not screen l: area for any submergence level above elevation (-) 24.6' also over estimates the not soroon area. This is not conservative since a larger area results in a smaller approach velocity and a smaller debris thickness. The smaller approach velocity and debris thickness, due to the larger than actual screen area, result -

in more available NPSH, as calculated in US(8) 326, than is adually available.

D. The assenption is made on pa0e 50 that all four RSS pumps I

start at 660 seconds is based on the promise that two pumps start at 660 seconds and two pumps start at 670 seconds.

According to LSK 24-9.4A, Rev.9, the DG load sequencers delay A and 8 pump actuation 650 seconds after receipt of a CDA signal and, C and D pump actuation 660 seconds after recelot of a CDA sl0nal. According to TS Susveillance Requirment 4 6.2.2.c. the a!!owaNo setpoint drift for the RSS pump time delay is +/ 20 seconds. Detailed analysis of sump volume, not submerged screen area, and available NPSH for the RCS pumps is not performed at time equal 630 seconds.

10. The cover pa0e of calculation US(8) 326 Indicates that US(8) 326 supplements calculation US(8) 316. However, calculation USE 316 addresses complete fine screen Pmise 12@s7 2.1sSs PM Paes 2 or 3

$ osheest utilews ICAVP DR No. DR MP3 0643 l

Mb$ tone unM 3 Discrepancy Report isutmergence (which is not limiting) and secondary side system breaks, it is not clear how calculation US(B) 326 supplements calculation US(B).316, Calculation U$'B) 326 should be evalua'.ed for the impact of diwreprticles.

Rev6ew l Ven:! Invahd Needed Oste l Intuator: WahaJmd, J. F, Q Q Q 11/12/97 VTtrad: < JtA Way A Q Q Q 11/1447 Vf 84i,C Rytoc, Don K Q Q Q 12/1/97 IRC Ctesw Pyi, Anand K Q Q ] 12/447 Date:

1. NAUD:

Date:

REs0LUTioN:

, Prwio~u%Entened by NU7 O Yes @ No NonD6ecrepentCondM6on?Q Yet @ No l -renenero se @ N. %Amm ur.o.i dtO ves @ No R. view Not #-- Needed Date

1. = ; " '

VT Lead: Nort, Anthony A VT Mgr: Schopfer, Don K O O O 1RC Chmn: Shh Anand K Date:

sL Commenta:

9 l

. Printed 121V97 2.18 o6 PM Page 3 or 3

4 Northeast Utilities ICAVP DR No. DR MP3 0617 l Millstorm unit 3 Discrepancy Report Re*w arow: sy aom oRvAuo Review Element: Syelem 0esign Disolpolna: Mechancel Design Oper% h F-. :p Type: Component De:s O veo systemProcoes: RSS N NRC sienlacence level: 4 g pg gg; Date pubhehed: 12497 P- . ire inconsistency between FSAR Sec 6.1.1.1 and componeilt design wl/ resped to Regulatory Guide 1.44 Ex . ^ According to FSAR Sedion 6.1.1.1, the use of stainless steel is

in accordance with Regulatory Guide 1.44.

The Regulatory Guide states that unstabilized, austenttic stainless steel of the AISI Type 3XXX series used for components that are part of systems required for emergency core cooling shall meet the following:

1. Materials from which components and systems are to be fabricated shall be solution heat treated to produce a non sensitized condrtion in the material,

2. Non sensitization of the material shall be verified using ASTM A 262 70.

FSAR Tables 1.81 and 1.8N 1 state that Westinghouse process specification 84201 may be used for testing instead of ASTM A-262 70.

The design specifications for the following Type 304 and 304L stainless steel components in the containment recirculation spray system do not require testing for non-sensitization of austenitic stainless steel material:

RSS Orifice Plates 3RSS*RO39A,B RSS Spectacle Flanges 3RSS'FLS3A.8,C,0 Reference specifications are:

2472.210190 Revision 3 2280.000-968 Revision 10 2280.000 582 Revision 12 Review Velid invalid Needed Date initiator: Feingold, D. J.

Q Q Q 11/17/g7 VT W : Nort, Anthony A y Q Q 11/1&97 VT Mgr: Schopfer, Don K O O O ':'1/87 IRC Chmn: Singh, Anend K Q Q Q 12/497 Dele:

WWAUD:

Date:

ResOLirTION:

_- ;f---

' tw sal? ( ) Yan (9) No Non ruan-M CeiaW7C 3 Yan 'G) Na Prirted 1259711s.41 PM Pege 1 of 2 s -

w l

4 3 Noitheast Utilities ICAVP DR No. DR44P34417 millstone Unit 3 Discrepancy Report

@N-d Pa%PenmastO v R *uon un, *.drO v @ N.

Rev6ew Intuelors (none) p_. ..u- y p- '

.u.

m m VT Lead: Nwl, Anthony 4 O O O l VT Mgri Schopfw, Don K O O IRC Chmn: $6ngh,A w ulK D n e d

Date:

O "

SL Cowenents:

1 i

i i

l 6

i i

4 Printed 12,*A7 2:1PA8 PM Page 2 of 2

- - _ , _ . . . --.e- , ,,w,, _-, . . , _ _ . , , . . , . . , - . ., . , _ . . . _ _ - . , , ,y,,. ..

Northeast Utilmes ICAVP DR No. DR MP3 0620 Ministone Unit 3 Discrepancy Report Review aroup: syWom DRvAuD j Rev6ew Element: System Desion Diecipline: Mechanical Doodo" p m op ,, m y %

h_ my Yype: Component Date O va systenverocese: Ras g

NRC s72n level: d DWe faxed to NU:

Date Pubilehed: 12997 Mr ; ci. Inconsistency with FSAR Table 6.31 motor operated valve i

closure time requirements Deecrtpleen: FSAR Table 6.31 states that :,mergency core cooling system rnotor operated valves, larg'1 than 6 inches, stroke in less than 49 inches per minute per inch of nominal valve size. This requirement appear to tse more appropriately applied to Oste and globe valves. If this requirement is applied to butterfly valves 3RSSWOV20A,B,C.D and 3RSSWOV23A,B,C,D, the required stroke time would be less than the design stroke time reported for these valves in design specificatien 2362.200164. Rey!sion

1. According to design specification 2362.200164 Revision 1 these motor operated valves have a stroke time of 30 seconds.

Containment recirculation system components are described in FSAR Section 6.3 to be included in the emergency core cooling system.

Revlow Valid inve46d Needed Date init6stor: Feingold, D. J.

O O O 117/87 VT Leed: Nerl, Anthony A O O O is/17/e7 VT Mgr schapfer, Don K Q O O 12/1/87 IRC Chmn: Singh, Anand K O O O $2/*87 Date:

INVAUo:

Oste:

RESOLUTION:

~

Prov60usly identmed by NU7 Q Yes @ No Non Discrepent condet6on?Q ves @ No Resolution Ponding70 v.e @ No Resolution Unresolvee70 vos @ No Rev6ew mg g Acceptable Not Acceptable Needed Date VT Lead: Nort, Anthony A VT Mgr Schopfer, w K IRC Chmn: Sirft, Anand K Date:

O O O sL Comments:

Printed 12N97 2.1919 PM PeGe 1 or 1

Northeast Utilities ICAVP DR No. DR MP3 0629 umstone unit 3 Discrepancy Report Movtow Group: Programmenc DR VAUD Revlow Element: Cormme Acton Pra;ees t' , -i Two: Uoeneine Document O vee 8, _ . . 7 N/A gg NRC signiacance level: 3 Does faxed to NU:

Date Puedehed: 12/s/97 E cy: LERs Need to cite Generic implications '

^

E: .. in LER 97 043 00, NU reported to the NRC that they had discovered th;.t they may not have proper 1y tested the P.11, P.

12 and P.13 Interlocks for the ESFAS and RPS systems. In LER 97 033-00 NU reported a non-conservative setting for the P-6 Bistable reset value which resulted in a condition where it is possible for the Intermediate Range Neutron Flux, P 6 Intertock to be bypassea and the Source Range Neutron Flux monitoring instrumentation not re-energized and operable, in LER 97 045-00, NU Indicated a discrepancy with regard to RPS response time testing. In all of these LERs the cause was indeterminate, This DR is concemed with the fact that all of these LERs relate to inadequacies in RPS and ESFAS testing and, in the LERs, NU has not pmsented a discussion of the generic implications of the events. Such a review is required by NU's corrective adlon

, process and the ICAVP would expect to see it reflected in the LERs.

Review Veild invenid W osse intenator: Bennett, L A.

O Q Q 11/2097 VT Lead: Ryan, Thomme J B D D 1 t'2057 VT lagri Schopfer, Don K IRC Chmn: Singh, Anand K O O O 52/i>87 O O O 12/*'7 Date:

INVAUD:

Date:

RESOLUTION:

Prov6ously identmed by NU7 Q Yes @ No NonDiscrepentCondithm7Q Yes @ No Resolution Pending70 Y= + No ResoluuonUntosolved?O va @ No Review

%g Acceptable Not Acceptable Needed Date

.VT Lead: Ryan, Thomme J VT Mgri Schopfer, Don K O O IRC Chmn: Singh, Anand K Date:

sL Commente:

, Prtnted 12/5/97 2:28.18 PM Page 1 or 1

Northeast Utilities ICAVP DR No. DR MP3 0430 i Millstone Unit 3 Discrepancy Report 1 Review Group: System - DR VAUD Revlow Element: Syelem Design . . .

Diecipline: Mecherwool Design l O Ya t'_  :, Type: Colouishon systenWProcese: DGX gg

, NRC signiacence M 4 Date faxed to NU:

)

Date Puldiohed: 12ND7  !

1 i

7 Deserepancy: Olscrepancy in calculation and subject component classification j Desertption: 1. Calculation *Intercooler Water Temperature control Valve l 3EGS*TCV44A/B", calculation no. SP 3EGS-9, Rev. O is assigned classification QA Cat.11. Per PDDS tim subject component, Temperature Control Valvo 3EGS*TCV44A/B, is

classified QA Cat.1.

I 2. Calculation *3EGS-RV32A,8 Jacket Coolant Re!ief Valve *,

calculation no. SP 3EGS-3. Rev. O, is classified QA Cat.11.

Throu0hout the calculation the subject relief valve is identified by valve number 3EGS RV32A,B. Per P&lD EM 116A 27 and EM-116C 12 the valvo number is 3EGS 'RV32A.B. Per PDDS the l Relief Valve 3EGS*RV32A,8 is classified QA Cat.1. '

Review Vand inwend Needed Date inleistor: Obersnes,8cian. '

Q 11/1147

VT Lead

Nort, Anthony A S O O i'i7/87 j VT Mgr: Schopfer, Don K O O' O 2ris7 ,

IRC Chmn: Singh. Anand K G O O 12/457 j Date: '

WNALID:

j - Date:

REaOLUTION

Nc -~^^'y identesed try Nu? O Yes Tel No Non Diacrepent Condeuon?O Yse @ No Resolution Pending?O yee @ No Receiuisonune sv.d70 vos @ No

• Review A -- " - NM Acceptable Needed Date VT Leed: Nor., Anthony A VT Mge Schopfer. Don K IRC Chmn: Singh. Anand K g

O G Date:

sL Comments:

i-4 j

4 i

. Printed 12/5S7 22e:04 PM Page 1 of 1 1

- - . . , - . , . . .,. -. ._,._-,._,,.x. .. . _ _ , , _ . . . . . , . _ . . . . . . . . , - - . , , _ ,

Northeast Utilities ICAVP DR No. DR MP3-0668 Millstone Unit 3 Discrepancy Report j Review Group: Programmate DRVAUD Review Element: CorrectNo Acton Prox ,

y

"'***""*: C"'

Discrepancy Type: CorrectNo Acton O vee SystemProcese: N/A (M No NRC signmcence level: 3 Date faxed tc NU:

Date Putdished: 12497 E1 -i. Insufficient Corredive Action Plan disposition in ACR # M3-96 0178 Em . ~ ACR # M3-96-0233 is in the out of scope corrective action sample. It was closed out to ACR # MS 96-0178. ACR # M3-SS l 0178 (and UIR 325) document cases where the battery room

temperstns have fallen below the winter temportures listed in the FSAR Table 9.4.1, entitled ' Indoor Design Temperatures for Control Building ".

The ACR # M3-96-0178 Corrective Action Plan does not provide a sufficient response to the following concems:

1) The updated FSAR Table 9.4.1 dated 4/96 revised the Battery Room indoor design temperatures (winter) tor Control Building as follows:

Battery Rooms 1 and 2............... 65 'F 3attery Room 3........................... 55 *F Battery Room 4............................P0 'F These updated FSAR Table 9.4.1 temperatures appear to be based on limited historical data (noted in UlR 325) and not based on design calculations or analyzed conditions.

2) EDSFl IR 4517 and UIR 325 have stated that temperatures as low as 50 'F have been recorded. There is no analysis or calculation that the proposed designed changes outlined in EWA No. 3-94-00091 will limit the Battery Room temperatures to or above the values listed in the updated FSAR Table 9.4.1 dated 4/96.

NOTE: EWA No. 3-94 00091 has been approved to address switchgear room humidity concems which attribute to increased breaker failures during testing. In addition , EWA No. 3-94 00091 states that it will also resolve low temperature concems in the battery rooms identified on EDSFl inspection Report No.

. 4517, which is the same concem as this ACR (M3-96-0178) and associated UIR (325).

ACR M3-96-0178 has been closed to EWA No. 3-94-00091, t

Review Valid invalid Needed Date initiatort Coruso, A. iir2os7 O O O VT Leed: Ryan. Thomoe J G O O ii'2SS7 VT Mgr: Schopfer. Dun K Q Q Q 12/1/07 1RC Chmn: Singh, Anand K O O O 12/4s7 Dese:

INVAUD:

Printed 12597 219:43 PM Page 1 or 2

Northeast Utilities ICAVP DR N3. DR MP3 0468 Ml;istone Unit 3 Discrepancy Report Dele:

l RESOLUTION:

Previouery hientelled by NU7 U Yes @ No Non DWr- / Condauon?V Ye$ 75) No n.eewi.nPeamastO va @ No nos uwm u m eeevedr O Y a @ No noview j ^ , "- Not har8h Needed Date VT Las n ' Ryan, Thomas J O VT Mgr: Schopfer, Don K O O O 1RC Chmn: Singh. Anand K l Dele:

SL Commente:

~

Printed 12597 2:29:40PM Pepe 2 of 2

Northeast Utilities ICAVP DR No. DR MP3 0640 Millstone Unit 3 Discrepancy Report Review oroup: symem DRvAuo Review Element: Syelem Design .

Diecipline* MedwuoelDesign E:: ; :r Type: C*W O p,

v.

$~___,

,  ::HVX NRC Signiacence level: 3 Date faxed $o NU:

Dele Putdisheel: 12497 ,

4 F -ri Emergency Generator Enclosure Maximum Temperature I

Calculation Deectipelon: During review of calculation P(B)-953. Rev,2 ' Emergency Generator Enclosure Ventilation' a discrepancy in the determ; nation of the room temperature was identified.

The results of the calculation show that at the extreme maximum outside air temperature of 103'F the temperature in the silencer i room is 121'F. This is higher than the 120'F maximum temperature stated in FSAR Section 9.4.6.1.

The calculation uses an airflow rate of 120,000 cfm and an air density of 0.075 lb/ cubic feet in calculating the temperature rise

. between the supply air and exhaust air in the room. At the

design outside air temperature of 86*Fdb/7?'Fwb the density of air is 0.0708 lb/ cubic feet. Since the supply fans are a constant volume device the 0.075 lb/ cubic feet air density used under estimates the temperature rise in the room by 1) approximately 6% at the design outside air temperature of 86'Fdb/75'Fwb, and

2) by approximately 9K. at the extreme maximum outside air temperature of 103'Fdb.

Review vand invalid Needed Date I

initier.or: Stout, M. D.

O O O 11/22/s7 i

VT Leed: Nwl, Anthony A g Q Q 11/22/97 VT Mgr: Schopfer, Don K 12/ l'7 O O O IRC Chmn: Singh, Anand K 2'd7 O O O Date:

INVAllO:

Date:

REsoltiTioN:

Previously identined by NU? O Yes @) No Non D6ecrepent Condition?'O vos @ No ResolutionPending?O vos @ No ResoiuiionunresoeveJ70 vos @ No Review A coptable Not Acceptable Needed Date init6st m M VT Lead: Neri, Anthony A O O O j VT Mgr: Schopfer, Don K 1RC Chmn: Singh, Anand K

. Date:

O O O SL Commente:

Printed 12597 2.30:35 PM PeGe 1 of 1

Norther 3t Utilities ICAVP DR No. DR MP3 0684 Ministone unit 3 Discrepancy Report Review Group: System oR VALID Review Element: System Design p g y t'1 , - cy Type: cem O vee system 9rocess: HVX gg NRC s'; ! : m level: 3 Date faxed to NU:

DatePubashed 12/697 )

~ cy: Calculation P(B) 741 CCP Area Temperature Gradient on Loss of Ventilation E= - -. Calculation P(B) 741 Rev. 0 ' Auxiliary Building Ventilation - CCP Area Temperature Gradient on Loss of Ventilation' determines the temperature gradient within the component cooling area following the loss of ventilation due to a design basis fire in the mechanical equipment room. During review of the calculation the following discrepancy was identified:

The heat !oads used in the calculation for the component cooling water heat exchanger, component cooling water pump, and i

motor control center are assumed values and are lower than the heat loads for normal operation in calculation 3-92103-191M3, Rev.1. As a result the calculation under estimates the time it takes the room to heatup to 185'F. FSAR Appendix 38 shows the maximum accident room temperature as 185'F Review Valid invalid Needed Date initiator: Stod M D G O O ts/2as7 I

VT Land: Nort, Anthony A g Q Q 11/2047 VT Mgr: Schopfer, Don K O O O $2riss7 1RC Chmn: Singh. Anand K O O O 12i497 Date:

INVAUO:

RESOLUTION Tmious*y Identmed by NU? O Yes iG) No Non D6screpent Condition?() vos @f No Paaah*% Pending?O vee 41 No neeoiunon unroscaved70 vee @ No Review g Acceptable Not Acceptable Needed Date VT Lead: Neri, Anthony A VT Mgn Schopfer. Don K IRC Chmn: Singh, Anand K Date:

g SL Consnents:

Printed 12S97 2 32-13 PM Pege 1 of 1

DR No. DR MP3464f 4

Northeast Utuities ICAVP Mmstone Unit 3 i Discrepancy Report Review Oroup: system DR VALlO i Revtow Element: Syelem Design Discipline: Mechanical Design -

Diecrepancy Type: Calcuison Om System / Process: HVX -

g

, NRC Signiacance N: 3 Date faxed to NU:

Date P.shdished: 12Al/97 r . - 4 Calculation P(B) 1130 Temporary Ventilation for CCP Pump Ares

Deecetpilon

Calculation P(B) 1130 Rev. O calculates the heat load and ventilation requirements for temporary ventilation in the

component cooling water (CCP) pumps area due to a loss of 1

primary ventilation resulting from a fire on El 43'-6" or EL 66*-6"

, in the auxiliary buWing. During review of the calculation the following discrepancies were identified:

]

1) Calculation P(B)-900 is used as the source for tha intemal

heat loads. The MCC and misc. e!actrical equipment heet loads

used in P(B)-1130 are lower than those found in P(B) 900.

2) Calculation uses a supp!y air temperature of 66'F in sizing the

temporary fan but does not provide a basis for using this value.

3) Calculation selects a temporary fan but does not provide a j basis for the fan pressure rating selected.

Review Valid Invalid Needed Date Intestor: Siout, M. D.

G O O 11:52/97 VT Lead: Nort, Archony A g [ [ 11/18/97 l VT Mgr* Schopfer, Don K g Q 12/1/97 i IRC Chmn: Singh, Anand K g 12/4/97 Date:

INVALIO:

f Dele:

RESoltJTION Previously identNied by Nur V Yes @ No Non D6screpent Condation?Q Yes @ No Peian Pending70 Yes @ No Resoiuiionunres ived70 ves @ No t

Review Acceptable Not Acceptable Needed Date w

VT Lead: Nort, Anthony A VT Mgr. Schopfer, Don K lRC Chmn: Singh, Anand K

Date

st Comments:

i i

a 4

Printed 12,"i/97 2:33:00 PM Page 1 of 1

Northeast Utilities ICAVP DR No. DR-MP3-0444 Millstone unit 3 Discrepancy Report Review Group: System DR VAUD Review Element: System Dee4pn p

F m -cy Type: Cem O vee s.

, , ==:Hvx @ No NRC FignWicence level: 4 Date faxed to NU:

Date Published. 12/847

~

FM 2:7 Calculation P(B) 900 Charging Pump and Component Cooling Pumps Area Ventilation System

Description:

Calculation P(B) 900 dated 4/9/84 determines the heat load and ventilation requirements for the charging pump and compontnt cooling water pump areas ventilation system and the resulting room temperatures in the cabicles.

This calculation does not refied the current system configuration and should be superceded by calculation 3 92-103-191M3, Review valid invalid Needed Date initiator: Stout, M. D.

8 O O iti 2/97 VTLead: Neri, Anthony ^

VT Mgr: Schopfer. Don K O O O 1111ais7 G O O 52cs/e7 IRC Chmn: Singh, Anand K Q 12/4S7 l Date:

INVAUD:

j RESOLUTION:

Ne2_P;IdentWhed by NU7 O Yee @ No Non Discrepent Conddion?Q Yes @ No ResolutionPending?O ves @ No P- -u -+: seoived70 vos @ No Review Acce;tM e Not Acceptable Needed Date VT Lead: Nort, Anthony A O O VT Mgt: Schopfer, Don K 1RC Chmn: Singh, Anand K Date:

st Commente:

e.

Printed 12/5/97 2:334 PM Page 1 of 1

. 1 Northeast Utilities ICAVP DR No. DR-MP3-0669

Ministone unit 3 Discrepancy Report Review 0*oup: Sye6em DR VAUD F. h :S @ W PotenuelOperability issue Diecipline: Wchanical DeWn R-~ , - i Type: Componert Data O veo

(,3 g, Sp . _- =: HVX ~

3 NRC Signinceiace level: 3 Dale faxed to NU:

Date Published: 12,1W7 Diacrepancy: Fan 3HVR*FN14A/B Motor Requirements Dacri Ption

• During the review of the cataculations and vendor data for the 1

Charging Pumps and Component Cooling Water Pump Area Ventilation supply fans 3HVR*FN14A/B a discrepancy regarding the fan brake horsepower requirements and motor rating was identified.

Vendor drawing 2170.430140-015 and specification 2170.430-140 Rev. 2 state that the fan is rated at 27000 acfm at 6.4 iwg

total pressure. At these conditions and an air density of 0.075 h.3.ubic feet the fan brake horsepower requiremem J 39.9 bhp.

N limit load hp for the fan is 45.4 hp with a blade position of M. The vendor drawing and the specification state that the

aotor has a 40 hp rating with a 1.0 service factor.

During winter operation of the system the fan entering air temperature determined in calculation 3-92103-191 M3, Rev.1 and CCN 5 is 23.2'F for case 6 and 15.9'F for case 10. At these fan entering air temperatures the air density is hi0her (approx.

0.083 lb/ cubic feet) and will result in a fan brake horsepower requirement greater than the motor nameplate rating. Note on page 18 of calculation 3-92103-191 M3, Rev.1 states that operation of fan is within the service factor of the motor and that a permanent solution to the ventilation of this area should address this point. The note in the cLiculation does not agree with specification and vendor data for the motor that shows the service factor as 1.0.

Review Valid invalid Needed Date initiator: Stout. M. D. O O O 513/S7 VT Lead: Nort, Anthony A

@ ] ] 11/1 &97 VT Mgr: Schopfer, Don K G 2it/97 O O IRC Chmn: Singh, Anand K O 2/4s7 O O Date:

INVAUD:

Date:

RESOLUTION:

Previously identined by NU? O Ye , e two reon Discrepent Condition?O vos @ No Reootution Pending?O voo @ Ne Resoianon unreemed?O va @ No Review Acceptable Not Acceptable Needed Date iniustm %W VT Lead: Nort, Anthony A VT Mgr: Schopfer, Don K Printed 12f5/97 2-3423 PM Page 1 of 2

4 Northeast Utilities ICAVP DR Ns. DR-MP3 0669 Millstone Unit 3 Discrepancy Report me cwan: ne. u.no x 0 0 O m.

O O O st comm.m.:

Printed 12/5/97 2-34:29 PM P d2

Northeast Utilities ICAVP DR No. DR MP3-0671 Ministo unit 3 Discrepancy Report Review Group: system DR VAUD Diecrepancy Type: CN OYu systemerocess: N/A @ No NRC signiacance level: 2 Date faxed to NU:

Date PutWehed: 12AW97 c

. =i. Cable resistance values were not correctly transposed (Calculation 230E)

Ducription: This calculation dciermines if adequate voltage is available across the relays and starter coil of the Charging Pump &

Component Cooling Water Pump Area Supply Fan (3HVR*FN14A).

One of the cable resistance values was incorrectly transposed from Rev.0 to CCN-2 of the calculation. The resistance of Cable No. 3HVRAOC004 is listed as 0.85 ohms in Rev. O of the calculation but was transposed as 0.085 ohms in CCN-2.

Also, the cable lengths used in the calculation are all shorter than the cable lengths listed in the NUSCO Cable and Raceway System. The source of these shorterlengths are from an interoffice correspondence included as Attachment D to Rev. O of the calculation. An explaination of the basis for these shorter lengths should be included in the calculation.

There is only about 2 volts of margin in the calculation results l (CCN-2 indicates that 85.2 volts are needed for the starter coil to pickup and 87.3 volts are available). Our reviewindicates that l after correcting for the proper cable resistance on cable 3HVRAOC004 the available voltage at the starter coil will be below the pickup value even when using the shorter cable lengths. The MCC degraded voltage of 428 Volts, per calculation NL-042 Rev. 2, CCN #5, is the available voltage considered.

Review Valid invalid Needed Date Initiator: crockett, Ed.

O O O 52n8/S7 VT Lead: Nort, Anthony A VT Mgt: Schopter, Don K Q Q Q 11/18/97 IRC Chmn: Singh, Anand K Q Q Q 12/1/97 Q Q Q 12/4/97 Date:

INVAUD:

Date:

REttOLUTION.

Previously identified by NU7 O vos it) No Non Diecrepent Condson?C) Yes @ No ResolutionPending70 vos @ No neeoiotionunreceived70 vos @ No P.eview gg Acceptable Not Acceptable Needed Date VT Lead: Ned, Anthony A Printed 12fA7 2-3624 PM Page 1 of 2

Northeast Utilities ICAVP DR No. DR-MP3 4471 ministone unit 3 Discrepancy Report vi. mn, ru m - ,, n _

VT Mgr: Schopfer, Don K =

IRC Chmn: Singh, Anand K - O b O O O Date:

SL Conenents:

l i

l l

E 12fA7 2:36.30 PM Page 2 of 2

4 Northeast UtilRies ICAVP DR No. DR MP3-0472 milistone Unit 3 Discrepancy Report Revtow Group: Programmeho DR VALID

- ~-

! Potential Opereldlity leeue Diecropency Type: Corrective Acten O vos SystemProcese: N/A @ No NRC S'; !" me level: 4 Date faxed to NU:

Date Putnished.12@97 N x y: Improperincorporation Documents are Referenced in EWR No. 3-93-00132

Description:

EWR No. 3-93-00132 requested the incorporation of all outstanding Calculaton 188E, Rev.1 CCN's and the NRC comments per NRC-EDFSI (Information Request) IR No's. 3327 and 3339 into Revision 2 of Calculaton 188E.

P'/R No. 3-93-00132 was closed out based upon issuance of Revision 2 of Calculaton 188E dated 12/22/94. Revision 2 incorporated CCN #1 through CCN # 8 and the NRC comment pertaining to IR No's. 3327.

l NRC--EDSFl IR No. 3339 was not incorporated into Revision 2 of Calculaton 188E.

Calculaton 188E is limited to the sizing of the 125V DC System batteries and chargers; consequently, IR No.- 3339 is not applicable to Calculston 188E. IR No. 3339 pertains to derating factors used in cable sizing for 480V/4.16kV power cables and was to be incorporated into the cable sizing calculations. IR No.

3339's Narrative stated that " Cable sizing calculations do not appear to show derating factors for 480V / 4.16kV power cables in trays (random fill) or conduits".

EWR No. 93-00132 incorrectly requested NRC-EDSFI 1R No.

3339 is to be incorporated into Calculaton 188E.

It is not known if the NRC comments as covered in NRC-EDSFI 1R No. 3339 have been incorporated into the appropriate cable sizing calculation (s).

Review Valid invenid Needed Date initiator: Caruso, A-O O O $'1*S7 VT Leed: Ryan, Thomas J VT Mgr: schopfer, Don K

@ Q Q 11/19/97 O O O 12ts/s7 IRC chmn: singh. Anand K O O O 12t4s7 Date:

INVALID:

Date:

RESOLUTION:

Previously idenufled by NU? O vos 1) No Non D6screpent condition?Q ves @) No Reso6ution Pending?O vos @ No Raaahdiaq unresolved?O vos @ No Review

w. w Acceptable Not Acceptable Needed Date Printed 12/5/97 2.37:08 PM Page 1 of 2

Northeast Utilities ICAVP DR N3. DR-MP34472 Millstone Unit 3 Discrepancy Report VT Lead: R , Thomme J O O O VT Mgr: Schopfer, Don K RC Chmn: Singh, Anand K =

g Date:

SL Conments:

Printed 12/'A7 2-37:14 PM Page 2 of 2

Northeast Utilities ICAVP DR No. DR MP3-0473 umstone Unit 3 Discrepancy Report Review Group: system DR VAUD Review Element: System DesiQn Diecipline: Mechancel Desig" %g pq m Discrepancy Type: Om O vos SystemProcese: HVX @ No NRC Signiacance level: 4 Data faked to NU:

Date Putdished.12/IV97 Discrepancy: 3HVR* MOD 45C1 Blocked Open Air Temperature Calculation Deecription: The objective of calculation 3-ENG-209, Rev. O was to show that the plant areas supplied by ventilation damper 3HVR* MOD 45C1 (charging pump area, component cooling water pump area, and MCC/ rod control area) will not drop to a temperature of less than 32'F If the damperis blocked in the full open position during April and May During review of this calculation the following discrepancies were identified:

1) Calculation used the nameplate rating for the component cooling pump and charging pump motors when deteriming the motor heat loss to the room. This is non-conservative as the pumps do not operate at their nameplate rating.

2) Calculation used a value of 7000 cfm for the outside air flow in determining the temperature rise in the areas. The calculation does not provide the basis for using 7000 cfm instead of the 27,000 cfm rating for supply fan 3HVR*FN14A/B.

3) Calculation used the entropy of saturated air instead of the specific heat of air when calculating the amount of heat required to raise the air temperature from 24'F to 32'F.

This calculation should be voided or identified as superceded by calculation 3 92103-191 M3 Rev.1. CCN 1-003 to calculation 3-92-103-191 M3 Rev.1 shows that the component cooling water pump area and charging pump area are maintained above 32'F with an outside air temperature of 20.8'F.

Review Vend invalid Needed Date Instietor: Stout. M. D.

VT Leed: Nw1. Anthony A

@ Q Q 11/1397 VT Mgr: schopfer. Don K

@ Q Q 11/1EW97 IRC Chmn: singh, Anand K

@ Q Q 12/1/97 8 0 O 12/4S7 Date:

INVAUD:

Date:

RESOLif710N:

Previously identified by NU7 O vos @ No Non Discrepent Condition (O Yes (9) No Resolution Pending70 vos @ No Renoiutioaunreson.d7 0 ves @ No Review Acceptabic Not Acceptable Needed Date VT Lead: Nerl, Anthony A Prtried 12/5/97 2:39:06 PM Pege 1 of 2

Northe:st Utilities ICAVP DR N3. DR MP3 0473 Millstone Unit 3 Discrepancy Report vi t.r ew. wi, rv eu w 7 m VT Mgr Schopfer, Don K O O IRC Chmn: S% Anand K - 0 O

m. O O O l

SL Comments:

l Printed 12f5S7 2'30:12 PM p

Northeast Utilities ICAVP DR No. DR-MP3 0444 Millstone Unit 3 Discrepancy Report Review oroep: Symem DRVAUD Review Element: system Design g O' , 2: Mechemcel Design r" - .;y Type: Cem O va

@ No SystemProcess: HVX NRC Sige@cance level: 3 Date faxed to NU:

Date Putnished: 12/847 r* - cy: ABVS Filter Unit Bypass Leakage

Description:

During the review of Calculation P(B) 1105 Rev. 0 which quantifies the charcoal filter bank bypass leakage and P&lD EM-148A 24 a discrepancy regarding filter bypass leakege paths was identified.

The pressure in the inlet plenum of the auxiliary building erhaust filter units 3HVR*FLT1 A/1B is maintained by pressurs contrDller 3HVR*PIC104A/B, The pressure controller mcdulates inlet vane dampers 3HVR* MOD 140A/B for exhaust fans 3HVR*FN6A/B to maintain the pressure at 1,5 Iwg per calculation NSP-097-HVR, With the inlet plenum maintained at a positive pressure there is a potential for unfiltered air to bypass the filter units through isolation dampers 3HVR*AOD44A/S, Calculation P(B)-1105 does not address this bypass leak path.

Review Venid invalid Needed Date Inillator: stout, M. D,

@ Q Q 11/17/97 VT Leed: Non, Anthony ^ Q O O st/24si VT Mgr: schopfer, Don K Q O O 12 tiro 7 IRC Chmn: singh, Anand K G O O i2t4s7 Date:

INVALID:

Date:

RESOLUTION:

Previously identined by NU7 O Yes @ No Non Diecrepent Condition?O Yes @ No ResolutionPending7O vos @)No ResolutionUnresolved70 Yes @ No Review g,. Acceptable Not Acceptable Needed Date g

VT Leed: t!ert, Anthony A VT Mgr: schopfer. Don K IRC Chmn: singh, Anand K Date:

sL Comments:

Printed 125s7 2:38:2e PM Page 1 of 1

Northeast Utilities ICAVP DR No. DR-MP34687 utiistone unit 3- Discrepancy Report Review Group: System DR VALIO R* view Element: Syelem Design Discipline: MechancelDes4*

Diecropency Type: Calculebon O va 8,n.A 7: HVX @ No NRC S',,.N z-ci- level: 3 Date faxed to NU:

Date Putd6ehed.12/8/97 D6ecrepancy: Fan Blade Missiles

=+n During review of NERM 69 and calculation NM(S)-685-DKB discrepancies were identlfied regarding the identification and evaluation of fan blade missiles for auxiliary building fans 3HVR*FN6A/B,3HVR*FN13A/B, and 3HVR*FN14A/B.

References FSAR Section 3.1.2.4 Environmerital and Missile Design Basis (Criterion 4)

NERM 69, Rev.1, dated 1/21/86, Hazards Review Program Summary Calculation NM(S)-685-DKB, Rev.1, dated 7/26/85. Evaluation i

of Intemally Generated Missiles from High Speed Rotating Machinery Calculation NM(S)-685-DKB, Rev.1, CCN 1, oated 1/14/b6 Calculation NM(S)-685-DKB. Rev.1 CCN 2, dated 10/23/96 -

Calculation HAZ 01449-M3, Rev. O, dated 9/14/97, Hazard Review Program for Auxiliary Building Calculation HAZ-01449-M3, Rev. O, CCN 1, dated 10/4/97 P&lD EM-148A 24 P&lD EM-1488-15 Drawing EB-45A-12 Drawing EB-45G-9 Drawing EB-45H-12 Drawing EB-45L 13 Drawing EB-45M-9 Drawing EB-45N-9

Background

FSAR Section 3.1.2.4 states that structures important to safety shall be approprt'tely protected against dynamic offects, including the effects of missiles.

NERM 69 Rev.1 Paragraph 2.4, page 10 (lines 7.39-7.42), states "A review is required of high speed rotating machinery in order to detennine their potential for generating missiles resulting from destructive overspeed conditions or failure resulting from base metal fatigue, fastener fallures, or manufacturing defects, and are included in the interaction tables where applicable (see Attachment 1 Description of Interaction Tables)"

Paragraph 2.4, page 11 (lines 8.10-13), states " Missiles resulting from axial fan vane and from centrifugal fan rotor or blade failure resulting from material failure or assembly error are considei M credible if the fan housing is inadequate to retain the fragments. A destructive overspeed induced failure is not credible for fans."

p , g - %::gr:ph 2.'

' p".; 12 ('MO: S.?5 ??), c'Ot :"'t c'Odh 1 e 3 1

l l

l l

.- 4 Northeast Utilities ICAVP DR No. DR-MP34647 Millstone unit 3 Discrepancy Report

, noted that while the ebove intemel missiles are considered credible, they may be excluded from addl+1onal consideration based on not penetrating the casing, or the improbability of (zone of influence) striking safety-related components necessary to mitigate the concequences of the postulated failure everd.*

Calculation NM(S)-685-DKB, Rev.1 Page 27: Concludes that any credible axial flow fan missile is not expected to have sufficient energy to penetrate its casing.

, Missiles escaping through flexible ducting connected to the fans are considered credible and their trajectories are established on 2

page 70.

Page 70 & 71: Fan blade missiles escape through any flexible ducting at the fan blade rotor end of the fan. Considers trajectory to be perpendicular to the axis of rotation thru 25' back from the i

pla6e of rotation.

Page 71: The m!ssile trajectory is used to review for safety-

, related system equipment and components which can be affected by the missile. (this effort is not within the scope of this calculation).

Page 61 Fan HVR*FN14A/S. Fan casing penetration energy required is less than kinetic energy of the blade missile, Therefore missile has sufficient energy to penetrate the fan casing. Calculation states *lt is unreasonable to expect the missile to unacceptably damage any adjacent safety-related equipment.' The calculation states that the type of blade failure that results in the blade penetrating the casing is not credible while acknowledging that that type of blade failure has be reported at other stations. The calc then evnluates another type er blade failure that does not result in the blade penetrating the fan casing. Calc does not povide an adequate basis to support the conclusion that there would be no damage to adjacent safety related equipmem or that the type of failure resulting in the blade penetrating the casing is not credible.

Calculation HAZ 01449-M3, Rev. 0 Page 536 Note: The 66'-6' elevation of the Auxiliary Buiiding was reviewed for the effects of pipe rupture and rotating machinery generated missiles. Protection has been provided to preclude HVH HELB pipe whip interaction with 3HVR*ACU1 A ducting (ref. E&DCR 06598). All other potentially unacceptable interactions are precluded by analysis.

Page 537,3. Axial Ventilation Fans: Missile ejection through the casing or the fan inlet flexible connection is precluded by analysis for the following fans (ref. calculation 12179-NM(S)-685-DKB); HVR*FN6A, HVR*FN658, HVR*FN14A, HVR*FN148, HVR*FN13A, HtR*FN138 D!screpancies

1. NERM 69 Rev.1 does not address fan missiles escaping through the flex connection for fans 3HVR*FN6A/6B, 3HVR*FN13A/138,3HVR*FN14A/14B

2. Statement in HAZ-01449-M3 does not agree with referenced calculation regarding missiles escaping through the fan inlet flex connection.

3. Calculation NM(S)-685-DKB. Paae 61: Fan casino penetration Prir A 125W 2:39:48 PM Page 2 of 3

o Northeast Utilities ICAVP DR No. DR-MP3-0447 Millstone Unit 3 Discrepancy Report energy required is less than kinetic energy of the blade missile.

Therefore missile has suf'icient energy to penetrate the fan casing, Cale does not provide an adequate basis to support the conclusion that there would be no damage to adjacent safety related equipment or that the type of failure resulting in the blade penetrating the casing is not credible. This is also in conflict with paragraph 2.4 of NERM 69 lines 7.39 to 7.42. Applies to fans 3HVR*FN6A/B,3HVR*FN13A/B, and 3HVR*FN14A/B Review Vaud inveHd Needed Date inMietor: Stout, M. D.

O O O 17/87 VT Lead: Nerl, Anthony A O O O tii20s7 VT Mgr: Schopfer, Don K

@ Q Q 12/1/97 IRC Chmn: Singh, Anand K O O O 2/4s7 Date:

INVALIO:

Date:

REsOLtm0N:

Provholy identHied by Nu? O Yes @ No Non D6screpent Condeuon?Q Yes @ No Resoeuu.n P.amas70 vos @ No p%une ev.470 veo @ No R.vi.w inNW M ev Not Acceptable Needed Date VT Lead: Nort, Anthony A O 8 VT Mgr: Schopfer, Don K IRC Chmn: Singh, Anand K Date:

O O O sL Comments:

l Printed 12S97 2:39:51 PM Page 3 of 3

Northeast Utilities - ICAVP DR No. DR MP3-0449 Millstone Unit 3 Discrepancy Repoit neview aroup: syenom omvAuo Review Element: system oenign 09 g

.J Electricaloenign C::: , xy Type: Calculebon Om s, _._.. , -se: HVX gg NRC s7?"xx level:4 page faxed to NU:

Date Putdished.12/8/97 c6 my: Discrepancies in Cable Calculations for Heater Feeds oseeripeton: The review of Calculation #69E

• Maximum Cable Lengths for

• Heater Feeders to Heaters with Motor Driven Fans' and Calculation #127E

• Sizing Cables for Heater Branch Circuits

1. HVR*FLT 1 A,1B,2A, 28, 3A, and 38' identified miscellaneous discrepancies in the calculations. The specific items are as follows:

1) Page 2 of Calculation #69E Identifies IPCEA P54-440, Table 27 as a design input for K Tray ampacities. Table 11 should also be listed.

2) The actual diameters used in Table A on page 2 of Calculation #69E correspond to the maximum guaranteed valces identified in the cable specification. This is non-conservative i

I with respect to using the minimum guaranteed values identified in the cable specification.

3) Assumption #2 of Calculation #127E states that tha cables are sized based on ampacities and that voltage drop is not a g,veming criteria. Because of the cable length discrepancies identified in item #7 and the fact that some of these lengths do not meet the criteria for maximum cable lengths established in Calculation #69E the validity of the assumption is not readily cpparent without more in depth analysis. For this reason this attribute should be addressed in the calculation by more than just an assumption. A preliminary review indicates that voltage drop may not be a concem due to the relatively high degraded voltage values at the associated buses.

4) Assumption #3 of Calculation #127E assumes no more than two conduits running in parallel. A review of the conduit plan drawings (e.g. Diawings EE-48A and B) has concluded that at the power feed panels for heaters 1 A,2A, and 2B there are cases of three power conduits in parallel.

5) Assumption #4 of Calculation #127E assumes no additional power cables will be installed adjacent to the analyzed conduits.

A review of the electrical installation drawings has not identified any note or direction ensuring this limitation is maintained.

6) Calculation #127E states that the heater power feeds being analyzed are run in 4 inch condult. A review of the cable raceway data report has identified that some of the conduit runs are 3 inch conduit. Also, the calculation identifies all the heater feeds as #4 AWG. A review of the cable schedule data report has identified some of the feeds as #2 AWG. These differences p pg S ed!c end condu!! 200. " Off00t the pod 0nc Of 'he P W2 i

l

_ _ _ _ - _ - - _ - _ _ - - - _ - - - - - - - = .

q Northeast Utilities ICAVP DR No. DR MP3-0689 Millstone Unit 3 Discrepancy Report ,

calculation which analyze conduit fill.

7) Calculation #127E lists cable lengths for the different heater power feeds analyzed in the calculation. These lengths are significantly less than those lengths listed in the cable schedule data report.

8) A review of Calculation #127E did not identify any considerations for the poftlons of the power feeds which are run in cable tray.

These discrepancies are not considered to adversely impact the output of the calculations. There are conservatisms in the calculations ensuring adequate sizing of heater power feeds. For this reason this discrepancy is rated a Significance Level 4.

Review Veild invalid Needed Date initieter: Kbh, J.

Q Q Q 11/1M7 VT Lead: Nort, Anthony A O O O tii2 w 7 VT Mgr: Schopfer, Don K Q Q Q 12/1ig7 1RC Chmn: Singh, Anand K Q O O $2rw7 Det.:

IPNALID:

Date:

RESOLUTION.

Previously identiSed by NU7 C) Yes (9) No Non D6screpent Condition?O Yes @ No Resolution Pending70 vos @ No Resolution Unresolved 70 res @ No Review initiator: (none)

VT Lead: Nort, Anthony A O O VT Mgr: Schopfer, Don K 1RC Chmn: Singh, Anand K Date:

sL Comments:

Printed 12S97 2 4o:27 PM Page 2 of 2

N3rtheast Utilities ICAVP DR No. DR MP3 0494 Millstone unit 3 Discrepancy Report Revlow Group: System DR VALIC Rev'ow Elesvent: System Desagn Diecipline: Mechanical Dwign PotenthIOperem issue Dioc:spancy Type: Calculetson O vee systerWProcess: DGX @ No NRC Significance level: 4 Date faxed to NU:

Dele Published: 12/8/97 D6screpancy: Basis for Calculations SP-EGO 10 and SP-EGO 11 Deectlption: Calculations SP 3 EGO-10 (Rev,0) and SP 3 EGO-11 (Rev 0) determine the setpoint for relief valves 3 EGO'RV38A/B and 3 EGO'RV37A/B. The basis for both calculations is a Telecon between P. Naughton and G. Olson (Fairbanks & Morse) dated 10-26-82. This reference was not attached to either calculation.

The telecon was requested in RFl MP3-636/ Item 3. According to MP3-IRF-0880, the requested item was not sent because it could not be identified in the Nuclear Document System. Since the referenced Telecon could not be found, the basis for these calculations cannot be verified.

Raview Valid invalid Needed Date Initiator: Langel. D.

O Q Q 11/19/97 VT Lead: Neri, Anthony A O O O iti24s7 VT Mgt: Schopfer, Don K O O O $2'1187 IRC Clvnn: Singh, Anand K Q Q Q 12/4s7 Cate:

INVALID:

De'e:

RESOLUTION:

Previously identified by NU? O vos @ No NonDiscrepentCondition7Q vos @ No ResolutionPending?O vee @ No R. iution un,.

ev.d70 vee @ No Review Acceptable Not Acceptable Needed Date initiator: (none)

VT Lead: Nort, Arthony A O O VT Mgt: Schop;er, Da K O O O IRC Chmn: Singh, Anand K Date:

SL Corronents:

Printed 12/S97 2:40:59 PM Page 1 of 1

N:rthea:t Utilities ICAVP DR ND. DR MP3 0696 Millstone Unit 3 Discrepancy Report Review aroup: Accident Wigetson DR VAUD

_ Peter &l Niityissue Diacropency Type: Lloensing h systemPrecess: N/A @ No )

NRC8:7"u level: 3 Date faxed to NU-Date Published: 12/IV97 D6scr*pency: Inadvertent Safety injection at Power: Time Critical Activity Not identified in EOP.

Deecription: In the response to the event the inadvertent SI Reanalysis (NEU-94-543) Table 15.51 lists operator Action to isolate Si flow in 600 sec. This is to preclude pressurizer filling and subsequent

' water relief through either the pressurizer power-operated relief VMves (PORVs) or the pressurizer safety valves (PSRVs). A stuck open PSRV would create a Loss-Of-Coolant Accident (LOCA). Operator action within the 600 second period prevents the potential operation cf . ither PORV or PSRV thus eliminating the probability of occurenc.e of the more serious LOCA event.

These assumptions and actions should have been identified by the risk analysis of Licensing Basis Accidents under NGP 3.12 Attachment 8.A Section

• A.S.1 - Effect on the Probability of Initiation of an Accident" or

• A.5.2 - Effect on the Probability of Failure of the Operator to take Corrective Actions",

Our review of EOP 35 ES-1,1 (Rev,12) could not identify notes or discussions that include operator actions to isolate Si flow within 600 sec. In the case of inadvertent Sl injection at power.

Review Valid invalid Needed Date initiator: Balodes, V. E.

Q Q Q 11/20/97 VT Lead: Rahele, Raj D G O O tir2o/97 VT Mgr: Schopfer, Don K Q Q Q 12/1/97 IRC Chmn: Singh, Anand K Q Q Q 12/497 Date:

1NVALIO:

Date:

REtoLUTION Previously identi6ed by NU? Q-Yes t No Non D6screpent Condition?Q vos l@ No Resolution Pend 6r.g?O ve. @ so R oiut;on unre.oiv.deO ve. @ No Review initiator: (none) ^##W VT Lead: Rahoje, Raj D VT Mgr: Schopfer, Don K 1RC Chmn: Singh, Anand K Date:

c st Conenents:

Pnnted 12/5/97 2 4211 PM Page1 of 1

_ Northeast Utilities ICAVP DR NA DR MP34497 tillistone Unit 3 D!screpancy Report ._

Revtew Group; system Ds 4 Allo Moview Element: System Design g j Diecipam: NW D*

Diecrepancy Type: CompoM Data O vos systewProceas: HVX @ No {

NRC s?-l"?-ca level: 3 Dela faxed to NU:

]

Dele PWinehM.12/847 DWW: ABVS and SLCRS Fire Dampers

Description:

During review cf the auxiliary building ventilation system (ABVS) and supplementary leak cotiection and release system (SLCRS) fire dampers discrepancies regarding fire damper sizes were identified.

The sizes of the following fire dampers shown on specification 2170.430 565 data sheets do not match the available fire damper sizes shown on DCN DM3-01 1296 96 and DCN DM3 i 12986 96 (drawings 25212 29565 sh. 555 and 556): i 3HVR*DMPF6 41*x17'with m!nlmum of 2 sections 3HVR*DMPF7 41"x17"with minimem of 2 sections 3HVR*DMPF8 33"x21" I

3HVR*DMPF18 50*x24'with minimum of 2 sections 3HVR*DMPF23 54*x36'with minimum of 2 sections 3HVR*DMPF24 34*x36'with minimum of 2 sections 3HVR*DMPF25 54*x36'with minimum of 2 sections 3HVR*DMPF26 20*x10"with minimum of 2 sectio'is 3HVR*DMPF29 15"x30" 3HVR*DMPF30 30*x30"with minimum of 2 sections 3HVR*DMPF31 10"x10'with minimum of 2 sections 3HVR*DMPF32 14"x12' with minimum of 2 sections 3HVR*DMPF44 15"x30" 3HVR*DMPF60 8"x5" with minimum of 2 sections 3HVR*DMPF61 9"x7" with minimum of 2 sections 3HVR*DMPF62 10"x9" with minimum of 2 sections 3HVR*DMPF64 8"x4"with minimum of 2 sections The maximum UL rated single drunper section size of 36*x36*

shown on drawings 25212 29565 sh. 555 and 556 is exceeded for the following fire dampers 3HVR*DMPF10 48"x48' requires a minimum of 4 sections compared to 2 listed in data sheet 3HVR*DMPF12 48"x48' requires a minimum of 4 sections compared to 2 listed in data sheet.

3HVR*DMPF14 48"x48' requires a minimum of 4 sections compared to 2 listed in data sheet.

3HVR*DMPF16 48'x48' requires a minimum of 4 sections compared to 2 listed in data sheet.

The sizes for the following fire dampers shown on the data sheets and in PMMS do not match 3HVR*DMPF17 38"x32' vs 50"x24" 3HVR*DMPF8 33*x21" vs.17'x42" o

~ 'uyn.nu

' ' " " ne v n aq

~' " v. . .

43. m .

Pnnted 12/5S7 2:42:43 PM "~

Page 1 of 2

e Northeast Utilities ICAVP DR No. DR-MP3-0697 Millstone Unit 3 Olscrepancy Report 3HVR*DMPF6 41*x17" vs- 17"x42' Review VekJ InvoiW Needed Oate inatiator: Stout, M. D.

O O O is/2iis7 VT Lead: Nort, Anthony A Q Q Q 51/2197 VT Mgr: Schopfer, Don K Q Q Q 12/1/97 RC Chmn: Sirnn, Anand K B C D 12'4S7 Date:

INVAUD:

Datc:

REsOLLm0N Prev 6ously identthod by NU7 V Yee t!) No Non Discrepent condit6on?O Yes @) No Resolut6on Pend 6ng?O vee @ No ResolutionUnresolved?O vee @ No Review g, Acceptable Not Acceptable Needed Date VT Lead: Nort, Anthony A VT Mgr: Schopfer. Don K RC Chmn: Singh, Anand K g

Date:

SL Comments:

, Prtnted 52/5/Q7 2 42:50 PM Page 2 of 2

9 Northeast utilities - .lCAVP DR Nr. DR MP3 0706 Millstone Unit 3 Discrepancy Report Review oroup: System DR VAUD Review Element: System Desegn Diecipline: Mechenecel Des 4O" N J:y Type: Componert Date Ow Systemprocese: HVX g

NRCS*f :n::levet:4 Date faxed to NU:

Date Putnished: 12/W97 C- ns Remote instrumentation and Alarms for ESF Filter Systems Deecription: During the review of supplementary leak collection and release system (SLCRS) filter units 3HVR*FLT3A/B and auxiliary building ventilation system (ABVS) filter units 3HVR*FLT1 A/B discrepancies regarding the remote instrumentation and alarms required by ANSI N509-1976 were identified. ,

FSAR Table 3.2-1 states that the ESF filter trains satisfy the requirements of ANSI N509.

ANSI N509-1976 Section 4.8.2 requires that the following items i

be provided at a central control room instrument panel:

Air temperature upstream of adsorbers Calibrated volumetric flow indicator and recorder High/ low airflow alarms As shown on P&lDs EM-148A-24 and EM 148E 12:

High temperature upstream of the adsorbers is not monitored A calibrated volumetric flow indicator and recorder is not provided High airflow alarms are not provided Review Valid invalid Needed Date initiator: Stout, M. D.

O O O ii/22/97 VT Leed: Nort, Arthony A VT Mgr: Schopfer, Don K

@ -0 0 tii22is7 O O O 12 itis 7 IRC Chmn: Singh, Anand K Q O O $2/4/97 Date:

INVAUD:

Dele:

RESOLUTION, Previously identHied by NU7 U Yes @ No Non Discrepent Condition?O Yes (9) No Resolution Pending?O yes @ No Resoiution unr iv.d?O vos @ No Review Acceptable Not Acceptable Needed Date Inith M VT Lead: Nerl, Anthony A O 8 VT Mgr: Schopfer, Don K IRC Chmn: Singh, Anand K Date:

SL Corronente:

Printed 12/5/97 243.21 PM Page 1 of 1 n

o f

NortheaCt Utilities ICAVP DR No. DR MP34704

- Millstone Unit 3 Discrepancy Report Review Group: system DR VAUD l Revtew Element: System Design g

Diecipline: Mechanical Design E':---- :y Type: Componert Date O va S,1T.- =: HVX @ No NRC NZm level: 4 Date faxed to NU:

Date Published: 12/tW97 Discrepenes Fan 3HVR*FN6A/B Pressure and Motor Requirements D=cription: During review of the auxiliary building ventilation system (ABVS) filter exhaust fans 3HVR*FN6A/B discrepancies regarding the fan pressure and brake horsepower requirements were identified, The fans are rated at 30,000 cfm and 10.5 inches water gauge (iwg) total pressure and have a fan brake horsepower requirement of 53.5 hp as shown in specification 2170,430-140 and on vendor drawing 2170.430140-71. The specification states that the fan blade position is 33 - 36.

The results of calculation PBV-4581 states that fan 3HVR*FN6A total pressure required is 11,77 iwg and calculati.n PBV-4521 states that fan 3HVR*FN6B total pressure required is 11.98 iwg. The calculations should address the higher than fan rating pressure requirements.

The fan brake horsepower shown in PDDS of 67 hp does not agree with the specification data sheets or vendor drawing.

The Buffalo Forge Co. fan curve (PD 114087 dated 8/2/82) shows at the rating condition of 30,000 cfm and 10.5 iwg total pressure the horsepower required is approximately 68 hp.

Rev6ew Valid invalid Needed Date initiator: Stout, M. D.

O O O i r22r7 VT Lead: Nort, Anthony A O Q Q 11/22/97 VT Mgr: Schopfer, Don K Q O O 12/1/97 IRC Chmn: Singh, Anand K B D D 12/4/s7 Date:

INVAUD:

Date:

RESOLUTION:

Prev 6ously identified by NU7 O vos @ No Non Disc epent Condstion?Q vos @ No Resolution Pending?O va @ No Resoluth Unt=olved?O va @ No Review mer.g%w. Not Acceptable Needed Date VT Leed: Nett, Anthony A O O O VT Mgr: Schopfer, Don K IRC Chmn: Singh, Anand K Date:

sL Comments:

Printed 1W97 244.33 PM Page 1 of 1

. _ _ _ _ _ _ .