ML20080C395

Preliminary Rev 1 to Steam Generator Blowdown Sys Test, Test Results Rept for 830611-15

ML20080C395
Person / Time
Site:	Palo Verde, 05000000
Issue date:	08/01/1983
From:	Stearns W AFFILIATION NOT ASSIGNED
To:
Shared Package
ML20080C249	List: ML20080C395 ML20080C409 ML20080C421 ML20080C434 ML20080C451 ML20080C467 ML20080C478 ML20080C485 ML20080C493 ML20080C506 ML20080C520 ML20080C539 ML20080C560
References
FOIA-83-609 91HF-1SC01, 91HF-1SC01-R01, 91HF-1SC1, 91HF-1SC1-R1, NUDOCS 8402080071
Download: ML20080C395 (3)

Text

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TEST RESULTS REPORT .

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PROCEDURE NO. 91HF-1SC01 PROCEDURE TITLE Steam Generator Blowdown System Test REVISION AT THE C0bDfENCDfENT OF TESTING 1 DATE 5/21/83

,. REVISION AT COMPLETION OF TESTING 1 DATE 7/7/83 LATEST TEST CHANGE NOTICE NO. TCN 005 DATE 6/15/83 DATES OF TEST PERFOM!ANCE 6/11/83 to 6/15/83 PAGE 1 OF 3 Review and

( Approval of Test Results PREPARED BY: 9 // fe , u _ DATE: 7 -/ P- 8'.3 TECHNICAL REVIEW: fl o_.A e* DATE: 7--/3 "b )

CROUP SUPERVISOR 51EVIEW: / W, DATE: 4./-83 TEST WORKING GROUP MEETING R: ' DATE:

PLANT REVIEW BOARD MEETING NUMBER: DATE:

QUALITY ASSURANCE REVIEW: DATE:

(Required for Test Results Reports not reviewed by TWG)

STARTUP MANAGER APPROVAL: DATE:

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8402080071 831116 PDR FOIA PDR GARDE 83-609

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Tsct R sults Rzport 6 91HF-lSC01.

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Rev. 1, TCN 005

.. Page 2 of 3 A. Test Purpose and Scope:

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i 91HF-lSC01 Steam Generator Blowdown System Test was perfornied to demonstrate system operation during normal hot standby conditions.

The following functions were tested:

1) Normal. Abnormal and High Rate blowdown flow control to the condensor and the blowdown flash tank.

2) Blowdown flash tank pressure and level control.

3) Blowdown demineralizer.-

1)Proherautomaticsequencingandbedremoval.

2) Demineralizer bed effluent water chemistry meets specification.

3) Various alarms which required temperature and pressure not covered in preoperational test 91PE-lSC01. 4 B. Complimentary Tests:

PRE OPS Secondary Chemistry Blowdown Flash Tank and Demineralizer Preoperational

{ Test 91PE-lSC01.

C. Test Description The testing of this system was performed in three distinct phases:

1) Phase I demonstrated flow path control from the main control room, as well as Blowdown Flash Tank operation.

2) Phase II demonstrated proper blowdown demineralizer operation from tae local control board.

3) Phase III demonstrated various alarms were received by either simulated or 11duced conditions.

D. Test Events (TER's listed numerically) 001 - 6/11/83 on Steam Generator Levels - No retest is required.

002 - 6/11/83 on Bed "A" Flow.

003 - 6/11/83 Bed "B" not available.

004 - 6/11/83 Flash tank relief valve opening. (SFR #1SC-255) 005 - 6/11/83 on Max flow thru Bed "A".

006 - 6/15/83 Bed "B" did not go into extended service.

007 - 6/15/83 Bed "A" was not removed from service. '

008 - 6/15/83 No total through-put alarm.

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009 - 6/15/83 On Low flow alarm setpoint.

• Completed Testing on 6/15/83 t

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Test Results Report 91HF-lSC01 Rev. 1. TCN 005

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• D. Test Events (Cont'd.) - '

Resolved and retested TER's 002, 003, and 005 on 6/15/83. _

Resolved and retested TER 008 on 6/16/83. Resolved and retested TER's 006, 007, and 009 on 6/22/83.

f E. Test Results TER 004 remains open and is addressed by SFR #1SC-255. Briefly, the Flash Tank Pressure Control Valves do not actuate fast enough to prevent the atmospheric relief valves from opening when '

ja switching to high rate S/G Blowdown for a period of approximately lj 3 - 5 seconds. All other Acceptance Critaria were met.

F. Conclusions The Steam Generator Blowdown Systems have been demonstrated to operate as designed. With the exception of TER 004. The system ,

is now available for service.

G. Recommendations As an interim solution to TER 004, if it is desired to use high

( rate blowdown to the flash tank, the pressure setpoint may be lowered to 175 - 200 psi until the pressure control valve respond, then increased to 225 psi (normal pressure) or, use the condensor for high rate blowdown. The PSE recommends approval of these test results by TWG.

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