ML20206S242

Proposed Tech Specs Surveillance Requirement 3.8.1.7 for EDGs

ML20206S242
Person / Time
Site:	Duane Arnold
Issue date:	01/21/1999
From:	IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:
Shared Package
ML20206S223	List: ML20206S242 NG-99-0115, Submits Request for Enforcement Discretion to Tech Spec Surveillance Requirement 3.8.1.7 for Edgs.Listed New Commitment Being Made by Ltr
References
NUDOCS 9901280237
Download: ML20206S242 (3)

Text

- . . . . . . - - .. . . _ . . . .

I 1

m. -

1-Attachment 2 to l f- NG-99-0115 l

I l

1 j

i l

i Mark-ups of Proposed Changes  !

l to the DAEC Technical Specifications and BASES 4

[ l l

l l

l' l

'9901290237 990121 ~

PDR ADOCK 05000331;'

P PDR

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

- i

• AC Sources - Operating

' 8.1 I

SURVEILLANCE REOUIREMENTS (cont nued)

SURVEILLANCE FREQUENCY i

SR 3.8.1.6 .i Verify the fuel c11 transfer system 31 days  :

operates to transfer fuel oil from storage  !

tank 10 the cay tank.

1 SR 3.8.1.7 -------------------NOTE--------------------

All DG starts may be preceded by an engine prelube period.

• Verify each DG starts from standby -

184 days ,

condition and acnieves1. inA 10 se ds. '

fvol e 2 37J4v and / 4574V and f equency T2 .6Hz36ds60fHz.J SR 3.8.1.8 -..---------------NOTE-------------------

This Surveillance shall not be performed ,

in MODE 1 or 2. However. credit may be '

taken for unplanned events that satisfy this SR.

Verify automatic slow transfer 24 months of AC power supply from the Startuo Transformer to tne Stanaby Transformer.

(continued)

I h 6 f o recmdsjvolhp 3 3W4V aw A I b p .<.ny >,3 5f.5 H w 3 ad b, stuhydde9ON%eB77WY"4b46 W ad SYepency >j.E7,5 H, ad fE 60. Sih. ,

l l

DAEC 3.8-7 Amenoment 223

AC Sources-Operating B 3.8.1  !

BASES SURVEILLANCE SR 3.8.1.2 and SR 3.8.1.7 (continued)

REQUIREMENTS After completion of the SR, the fuel racks to the DG are disabled to allow purging of any residual fuel oil from the  !

cylinders. This also renders the DG inoperable. The two l hours allowed by the Note minimizes the amount of time a DG is inoperable while providing enough time to perform the required Conditional Surveillance and avoids enterin shutdown actions of Condition E or F unnecessarily. g the l For the purposes of this testing, the DGs are manually  ;

started from standby conditions. Standby conditions for a i DG mean that the diesel engine coolant and oil are being i continuously circulated and temperature is being maintained  ;

consistent with manufacturer recommendations, i In order to reduce stress and wear on diesel engines during testing, the manufacturer of the DGs installed at the DAEC hh SchWE SY8d recommends a modified start in which the starting speed of j sh% v o b e.,33')4y/ the DG is limited, warmup is limited to this lower speed.

f k and the DGs are gradually accelerated to synchronous speed

• • A M N "" A prior to loading. These start procedures are the intent of i fnepewty >- E7,5 H a Note 2 (SR 3.8.1.2).

a d 6 fo0,5 N w j SR 3.8.1.7 requires that, at a 184 day Frequency, the DG l starts from standby conditions and achieves recuired voltag "

and frequency (i.e. - voltage a 3744 V(ang s 4#16 Vland frequency a 59.5 HZ(ani s 6(K5 H3) within 10 secondsj e 10 second start requir'ement supgrorts the assumptions in the i design basis LOCA analysis of UFSAR. Section 6.3 (Ref.12) and DAEC SAFER /GESTR LOCA Analysis. NEDC-31310P (Ref.15).

The 10 second start requirement is not a)plicable to SR 3.8.1.2 (see Note 3 of SR 3.8.1.2). w1en a modified start procedure as described above is used. If a modified start is not used, the 10 second start requirement of SR 3.8.1.7 applies.9 The normal 31 day Frequency for SR 3.8.1.2 is consistent with Safety Guide 9. The 184 day Frequency for SR 3.8.1.7  !

is a reduction in cold testing consistent with Generic Letter 84-15 (Ref. 7). These Frequencies provide adequate assurance of DG OPERABILITY. while minimizing degradation resulting from testing.

l L ab b h hE EN "PW'M D I- DE h reach sked) y

&o ad%w iuw\ess-%e, vwod\eh b4 sheY MM 'O em PSq eh iT r

_ pw h it.4\\y moMor eh awb h*- **^A "h # A k NN 7d *P V Q.fg e p . c a d v oi h g o r a j u\ or 74Ork tuh] .

(continued)

DAEC B 3.8-16 Amendment 223