ML20009B239

Responds to IE Bulletin 80-05, Vacuum Conditions Resulting in Damage to Chemical Vol Control Sys (CVCS) Tanks. Sys Containing Tanks Investigated to Determine If Partial Vacuum Would Cause Damage to Tanks.No Corrective Actions Needed

ML20009B239
Person / Time
Site:	Satsop
Issue date:	06/18/1981
From:	Leddick R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
GO3-81-2135, IEB-80-05, IEB-80-5, NUDOCS 8107150142
Download: ML20009B239 (4)

Text

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jut'.o'l-g Washington Public Power Supply System .h nu n r A JOINT OPERATING AGENCY y y [

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P O 8041221 E LM A, W ASHINGTON 98$41 PHO%t [2061249-5001 June 18,1981 G03-81-2135 N ~

Docket Nos. 50-508, 50 ';09 // g

!!r. R. H. Engelken, Director p .,

-3 U. S. Nuclear Regulatory Commission c

f Region V JUL 141981*

1990 H. California coulevard 63 v.a.mus Suite 202 Walnut Creek Plaza """ammam Walnut Creek, California 94596 9 3

Dear !!r. Engelken:

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Subject:

PROJECI c3S. 3 AND 5 RESPONSE TO IE BULLETIN 80-05

Reference:

Letter, D. L. Renberger to R. H. Engelken, Same Subject, dated June 12, 1980 In the refe enced letter, the Supply System provided an initial esponse to the subject IE Bulletin, entitled, " Vacuum Conditions Result'.ng in Damage to Chemical Volume Control System (CVCS) Tanks." In thi-letter, we indicated our intention to review the design of al' tanks and components in the radioactive waste system.

f All systems containing tanks that could possibly contain radioactive materials were investigated to determine if a partial vacuum would cause any damage to the tanks. The following systems were investigated:

1. Chemical Volume Control System (CVCS)

2. Solid Haste Systerr (SUS)

3. Detergent Waste System (DUS)

4. Floor Drain System (FDS) attached Table i lists the tanks in these systems which could contain-gt' -tive wastes with an explanation of their vacuum protection.

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Washington Public Power Supply System tir. R. H. Engelken June 18,1981 Page Two G03-81 -2135 As a result of our investigations, the Supply System feels that adequate protection has been provided in the design of WNP-3/5 to preclude the possibility of tank damage and the release of radioactive material or detrimental effects with regard to overall safety of plant operation.

Therefore, no corrective action will be taken.

Please notify us if you have any questions regarding our response.

Very truly yours, 1 -

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. S. LEDDICK Program Director, WNP-3/5 Attachment cc: Director, NRC Office of ISE, Washington D. C.

W. Woods, NUS N. S. Reynolds, D&L D. Smithpeter, BPA Ebasco, NY (Licensing)

Ebasco, Elma e

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Page 1 of 2 o

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TABLE 1 VACUUll PROTECTION FOR TANKS UHICH COULD CONTAIN RADI0 ACTIVE UASTE Design Ca pacity Ta nk System Pressure (Gallons) Vacuum Protection Holdup Tanks A,C,C,D, & E CVCS 1.5 psig 103,000 Each tank equipped with 6" vacuum breaker, which cannot be accidentally valved off. The specific surveillance program will i rinalized at a later time.

Equipment Drain Tank CVCS 60 psig 108,000 Designed for full vacuum conditions.

(INT.)

15 psig (EXT.)

Volume Control Tank CVCS 75 psig 5,110 Designed for full vacuum conditions.

(INT.)

15 psig (EXT.)

Reactor Drain Tank CVCS 130 psig 2,990 Designed for full vacuum conditions.

(INT.)

15 psig (EXT.)

Concentrate Storage Tank SWS Atmosphere 3,000 Overflow line is adequately sized such that

( AT!!) the differential pressure required to induce flow of air into the tank at the same volu-metric flow rate as liquid being pumped out (at runout flow) is less than the maximum allowed by the API code for atmospheric tanks.

Feed Tanks A & B SWS ATM 5,000 Same as Concentrate Storage Tank.

Secondary Particulate Filter SUS AT!1 2,000 Same as Concentrate Storage Tank.

Hopper VRS Condensate Sample Tanks SWS ATil 5,000 Same as Concentrate Storage Tank.

A&B

Page 2 of 2 .

4.

Design Capacity Ta nk System Pressure (Gallons) Vacuum Protection .

Dewatering Tank SUS ATil 2,000 Same as Concentrate Storage Tank.

Flush Tank $US ATr: 1,000 Same as Concentrate Storage Tank.

Detergent Uaste Tanks AaB DUS ATM 7,500 Same as Concentrate Storage Tank.

Decontamination Sample Tank DUS ATM 600 Same as Concentrate Storage Tank.

Floor Drain Tanks A & B FDS ATil 30,000 Same as Concentrate Storage Tank.

Spent Resin Storage Tank SWS 50 psig 6,500 Same as Concentrate Storage Tank except differential pressure is less than the maximum allowed by the ASTIE code.