ML101300348

Additional Preliminary RAIs (Relating to Fire Protection) for FSAR Chapter 14

ML101300348
Person / Time
Site:	Watts Bar
Issue date:	05/10/2010
From:	Joel Wiebe Watts Bar Special Projects Branch
To:	Arent G, Crouch B, Langley D Tennessee Valley Authority
Wiebe, Joel NRR/DORL/WBSP, 415-6606
References
Download: ML101300348 (2)

Text

From: Wiebe, Joel Sent: Monday, May 10, 2010 1:57 PM To: 'Bill Crouch'; 'Tony Langley'; 'Gordon Arent'

Subject:

Additional Preliminary RAIs (Relating to Fire Protection) for FSAR Chapter 14

1. Justify the deletion (Amendment 97) of the following test requirements from TEST METHOD on sheet 13 of 90:

a. Verify proper operation of the fire suppression system, and obtain flow rates through the underground loop and differential pressure across the strainers.

b. Verify the Aqueous Film Forming Foam system proportioning equipment operates in accordance with design and vendor documents.

c. Verify that each enclosure which utilizes a CO2 fire suppression system is provided with appropriate CO2 concentrations in accordance with design requirements. The test will be performed by either an actual CO2 discharge or by integration of enclosure air leakage data with previous CO2 discharge test data.

Air leakage data will be obtained by performing a pressurization test for the enclosure and measuring the air leakage to determine the CO2 retention time.

2. Justify limiting the testing of the ability of the fire pumps to supply water to only the Unit 2 annulus and reactor building at design flow and pressure. (Item 4 under TEST METHOD on sheet 13 of 90)

3. Justify the deletion (Amendment 97) of the following from ACCEPTANCE CRITERIA on sheet 14 of 90:

a. The hydraulic performance of the High Pressure fire protection pumps meets or exceeds design requirements as described in FSAR Section 9.5.1.

b. Carbon dioxide and Aqueous Film Forming Foam (AFFF) suppression system operate properly and in accordance with vendor documents and as described in FSAR Section 9.5.1.

E-mail Properties Mail Envelope Properties (F371D08C516DE74F81193E6D891DC4AF309F498161)

Subject:

Additional Preliminary RAIs (Relating to Fire Protection) for FSAR Chapter 14 Sent Date: 5/10/2010 1:56:45 PM Received Date: 5/10/2010 1:56:00 PM From: Wiebe, Joel Created By: Joel.Wiebe@nrc.gov Recipients:

WDCrouch@TVA.gov ('Bill Crouch')

Tracking Status: None DTLangley@TVA.gov ('Tony Langley')

Tracking Status: None GArent@tva.gov ('Gordon Arent')

Tracking Status: None Post Office:

HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 12541 5/10/2010 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: