ML19323J168
| ML19323J168 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/05/1980 |
| From: | Haass W Office of Nuclear Reactor Regulation |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8006190327 | |
| Download: ML19323J168 (4) | |
Text
"
T RR E
JUN 0 51980 DISTRIBUTION:
- Uocket File (2)
QAB Projects QAB Chron. File Vitoonan, DE JSpraul, QAB Docket tios. 50-327 WBelke,QAB 50-328 / '
JConway, QAB JGilray, QAB FLiederbach,QAB MEl10RAllDutt FOR:
.ilbert Schwencer, Chief, Licensing Branch No. 2, Division of Licensing FROM:
Walter P. llaass, Chief, Quality Assurance Branch, Division of Engineering
SUBJECT:
SEQUOYAll Q-LIST REVIEW QAB has completed its review of Table 17.2-1, " Critical Structures, Systens, and Components," of the FSAR for the Sequoyah fluclear Plant which identifies items subject to TVA's operational QA program.
Under a revised procedure that involves other tiRR technical review branches in the review of this list, we have identified certain deficiencies and have generated the enclosed " Request for Additional Informa-tion" regarding Table 17.2-1.
Our review was based on considerations for safety-related items in effect prior to the TI1I-2 accident. lle anticipate a need to sup-plement the final Q-list at a later date as full implementation of the TMI Action Plan occurs.- Please transmit the enclosed request for information to TVA.
He believe our information.nceds should be satisfactorily resolved before allowing TVA to proceed beyond low power tests at the Sequoyah t!uclear Plant. lie are avail-able to discuss this matter with you, your staff, and TVA as may be required to expedite resolution.
Origirial signed by Walter P. Haass 11 alter P. llaass, Chief.
Quality Assurance Branch Division of Engineering
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Enclosure:
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l Request for Additional l
Infomation i
cc u/ enclosure:
C. Stahle
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R. Tedesco D. Eisenhyt
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8006190327
REQUEST FOR ADDITIONAL INFORMATION Sequoyah Q-List 1.
The following items from the Q-list (FSAR Table 17.2-1) need expansion and/or clarification as noted.
Revise the list as indicated or justify not doing so.
1.0 Primary Containment Include missile barriers and containment sump system.
2.2 Electrical Identify the specific electrical systems included.
3.1 Emergency Gas Treatment Include H -02 monitors, H2 recombiner, 2
System and control panel.
4.0 Reactor Building Include missile barriers.
4.2 Containment Purge System Include radiation monitors.
5.0 Auxiliary Building Include filters for the ventilation system and include individual room vent systems for SI, RHR, and CS pump rooms.
5.9 Fuel Handling Area Include fuel handling system radiation Ventilation monitor.
6.0 Control Building Include filters for the ventilation systen.
6.3 Main Control Room A/C Identify the systems included such as System the radiation monitoring system, the chlorine monitoring system, etc.
10.0 Refueling Water Storage Identify the systems included.
Tank 11.0 Reactor Coolant System Identify leak detection system, PORVs, pressurizer safety valves, PORV block valves, and RCP cooling water and RCP seal water systems.
11.11 Electrical Identify the electrical systems included.
12.1 Main Steam Indicate that the system extends to and includes the outermost containment isola-tion valves and includes the steamline power operated atmospheric dump valves.
13.1 Main Feedwater System Indicate that the system extends to and includes the outermost containment isola-tion valves.
. 14.0 Safety Injection System Include sump instruments and RWST level instruments needed for switchover to l'
recirc phase.
16.0 Containment Spray System Include cold leg accumulators.
18.0 Chemical and Volume Include boron recovery system.
Control System 22.0 Instruments and Controls Include reactor-trip system and ESF actuation system.
22.1 Cabinets, Panels, Racks Include sensors, indication systems, and annunciation systems.
23.0 Emergency Power System Include the emergency diesel fuel oil system including the storage tanks.
23.1 Diesel Generator System Include auxiliary systems such as the lube oil system, the air starting system, and the jacket cooling system.
24.
Upper Head Injection Include isolation valves and the hydraulic System system..
30.
Safety Related Display Identify the systems included and include Indication meteorological data collection system.
2.
The following items do not appear on the Q-list (FSAR Table 17.2-1). Add these items to the list or justify not doing so:
a.
Cooling Towers, b.
Environmental Monitoring System for areas that contain safety-related equip-ment.
Electro-Hydraulic Control System - Portions that control the closing of tur-c.
bine stop valves, intercept valves, turbine bypass valves, and other main steam system downstream valves that are needed to close in the event of a MSLB with failure of a MSIV to close.
d.
Emergency AC Auxiliary Power Systems (Class IE)
- 1) Fire Stops and Seals
- 2) AC Power Inverters
- 3) Auxiliaries associated with the diesel generator system
- 4) Switchgear, Load Centers, and Motor Control Centers e.
125 Volt Class IE DC Vital Power Distribution System
- 1) Battery Racks
- 2) Cable Trays and Supports (Raceway installation containing Class IE cables and other raceway installations required to meet seismic Category I requirements) j
3-
- f. - Expendable and Consumable Items necessary for the functional performance of CSSC (i.e., weld rod, fuel oil, boric acid, snubber oil, etc.)
9 Measuring and Test Equipment I
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