BUILDING SPRAY

Question 1

What is the operational limit for BSPs at low flow?

Answer 1

Do NOT operate BSPs for >60 seconds at <60gpm (60 for 60).

Question 2

What is the required TSP weight for making the reactor critical?

Answer 2

TSP weight must be ≥18K and ≤28K lbs.

Question 3

What is the basis for TSP weight limits?

Answer 3

Maintaining sump pH between 7.3-8.0 to prevent Cl SCC of steel and ensure sump precipitates.

Question 4

What is the design basis of Building Spray?

Answer 4

Maintains RB pressure <55#, absorbs iodine, and controls sump pH by increasing it to 7.3-8.0.

Question 5

What actions are required if BSP flow is <60gpm or >1400gpm?

Answer 5

Place pump in PTL and close BS-V-3; shut down BS in 24 hours to prevent challenging ECCS strainer.

Question 6

What are the conditions for manual initiation of Building Spray?

Answer 6

RCS leak >500gpm, significant RB breach, TCLAD >1400°F, failed fuel >5%, RB pressure >5#, offsite child thyroid dose >5 Rem, or SAMG.

Question 7

When can Building Spray be shut down?

Answer 7

Approaching 24 hours OR RB pressure <5# and RM-G-22/23 below High.

Question 8

What is the minimum BSP pump flow required for adequate DHR flow?

Answer 8

<1400gpm BSP pump flow MUST be maintained.