ML20044G244

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Forwards Final Draft Version of Ssar Addressing COL Action Items 9.3.3-1 & 9.3.8-1 Re Safety Design Bases & Safety Design Bases (Interface Requirements),Respectively
ML20044G244
Person / Time
Site: 05200001
Issue date: 05/21/1993
From: Fox J
GENERAL ELECTRIC CO.
To: Poslusny C
Office of Nuclear Reactor Regulation
References
NUDOCS 9306020223
Download: ML20044G244 (4)


Text

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GE Nuclear Energy

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i May 21,1993 Docket No. STN 52-001 Chet Poslusny, Senior Project Manager Standardization Project Directorate Associate Directorate for Advanced Reactors and License Renewal Office of the Nuclear Reactor Regulation

Subject:

Submittal Supporting Accelerated ABWR Review Schedule - DFSER COL Action Items 933-1 and 9J.8-1

Dear Chet:

Enclosed is a final (draft) version of the SSAR that addresses COL Action Items 933-1 and 93.8-1.

Please provide a copy of this transmittal to Butch Burton.

Sincerely, h

Jack Fox Advanced Reactor Programs cc: . Bernie Genetti(GE)

Norman Fletcher (DOE)

Gail Miller (GE)

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( ABWR mom Standard Plant c o t 9. 3. ? -l #f / N ', prv a COL T,7, 8 - I 9:3.3 Equiprnent and Floor (3) open drainage lines from areas that are re-Drainage System quired to maintain an air pressure differential are provided with a water seal.

The system which collects and transfers all radioactive liquid wastes is discussed in (4) All drainage lines into each sump shall be Subsection 93.8. The non radioactive drains are turned down and terminated below the lowest discussed in this subsection. Tbc non radio- fluid level to which the sump pump can draw.

active drains consist of equipment inside the standard plant buildings and COL interface 933.13 System Description requirements for that portion outside the buildings. The drains release effluent to the The non-radioactive drain system is designed g

4 site specific discharge structure. The potable to assure that waste liquids, valve and pump and sanitary water systems (Subsection 9.2.4) leakoffs and component drains and vents are includes the non-radioactive drains. directed to the proper area for processing. The process portion of the systems consists of sump 933.1 Non. Radioactive Drains pumps, valves and instrumentation. Sumps are provided as shown in the arrangement drawings in 933.1.1 Safety Design 11ases Section 1.2.

(1) There shall be no interconnection between any All drainage systems are essentially passive portion of the radioactive drain transfer systems down to the sumps or yard pipe COL 9.3j-l system and any non-radioactive waste system. connections. This is, flow is by gravity with no valves, pumps, and the like in the lines such (2) Effluent from non radioactive systems shall that failure could cause a system not to drain.

l be sampled prior to discharge to assure that All exposed drainage piping is scismically there are no unacceptable discharges. analyzed to remain intact following an SSE, and thus will drain the area as required. See (3) Non-radioactive drains piping shall be Subsection 3.4.1 for further details.

non-nuclear safety class and quality group D and shall not have any effect on the Unacceptable flooding consequences are operation of safety related equipment. precluded by the capacity of the drain and the placement of safety-related equipment on raised (4) The floor attain piping system shall be pads or grating. Also, check valves in sump arranged with a separate piping system for pump discharge lines prevent reverse flow from each quadrant. The piping shall be arranged other sumps that have piping to common so that flooding or backflow in one quadrant collection tanks.

cannot adversely affect the other quadrants.

The design of the drain system precludes (5) Any valves that are relied upon to prevent release to the environs of radioactive liquid.

backflow shall be inspectable and testable As a backup, however, all non-radioactive drain and withstand SSE. systems are campled for radiation prior to release to the environs.

933.1.2 Power Generation Design Bases 933.1.4 System Operation and Component l (1) The drains shall be designed to collect and Description l

remove effluent from their point of origin to the site discharge structure. The drain system in similar in operation and l component descriptions as discussed in Subsec- l l

(2) The sump level switches shall serve as tions 9.3.8.2.2 and 9.3.8.2.3 excepting radia-leakage monitors for equipment or systems tion effects and the interfacing discharge served by each sump. Leakage detection is process in lieu of discharge to radwaste.

also discussed in Subsection 5.2.5. l l

9.32 Amendment

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9J3.1.5 Safety Evaluation Provisions for obtaining water samples from the non-radioactive drain system shall be The non-radioactive drains are not provided. A sampling and analysis program shall safety-related. The sumps may be instrumented be provided to show that radioactive liquids are and alarmed as required to assure there is no not being discharged from the non-radioactive  ;

effect on safety-related equipment. drain system.

col 933.2 Non. Radioactive Drain Interface 9.3.4 Chemical and Volume Control 9,15-l System (PWR)

The COL applicant shall provide the continuation of the drain system (Subsection (Not applicable to a BWR) 933.1) from the standard plant buildings to the site discharge structure. A conceptual design 9.3.5 Standby Liquid Control System  ;

continuation is discussed in this subsection.

93.5.1 Design Bases 933.2.1 Safety Design Bases (laterface Requirement) 93.5.1.1 Safety Design Bases The safety design bases is the same as listed The standby liquid control system (SLCS) has c0L a safety-related function and is designed as a 4,y,g-/ in Subsection 933.1.1.

Seismic Category I system. It shall meet the 933.2.2 Power Generation Design Bases following safety design bases:

(Interface Requirement)

(1) Backup capability for reactivity control The power generation design bases is the same shall be provided, independent of normal re-as listr ' . Subsection 933.1.2. activity control provisions in the nuclear reactor, to be able to shut down the reactor 933 System Description (Conceptual) if normal control ever becomes inoperative.

The non-radioactive drain system collects (2) The backup system shall have the capacity waste water from the following sources: plant for controlling the reactivity difference buildings (reactor, turbine, radwaste, service between the steady-state rated operating and other buildings), precipitation and other condition of the reactor with voids and the surface runoff. A system composed of collection cold shutdown condition, including shutdown piping, curb and gutter inlets, manholes and margin, to assure complete shutdown from the pumps is provided. Waste water is sent to dual most reactive conditions at any time in core settling basins where suspended solids are life.

settled and oil is collected on the surface.

Means are provided to perform any required tests (3) The time required for actuation and or analyses required by the discharge permit. effectiveness of the backup control shall be Periodically, one of the basins is taken out of consistent with the nuclear reactivity rate service and the suspended solids and oil are of change predicted between rated operating removed. and cold shutdown conditions. A fast scram of the reactor or operational control of 933.2.4 Safety Evaluation (Interfam fast reactivity transients is not specified Requirement) to be accomplished by this system.

The safety evaluation is the same as (4) Means shall be provided by which the S ubs e ction 9.3.3.1.5. functional performance capability of the backup control system components can be 933.2.5 Instrumentation (Interface verified periodically under conditions Requirement) approaching actual use requirements.

Demineralized water, rather than the actual neutron absorber solution, can be injected 9.3-2.1 Amendment

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$tandard Plant (OL 1.LB-/ nev. s 1

. l 9.3.12 COL License Information - 3 s

1 93.12.1 Non-radioactive Drains (Interface -

Requirements) i, The COL applicant shall provide the continuation of j

  1. the non-radioactive drain system outside of the L; 9, 3,3'i standard plant buildings to process and monitor to i

the site discharge structure in accordance with Ll

.d0L j Subsection 933.2.

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93.12.2 Storage Tank Discharge Valve Reliability t

The COL applicant will confirm that the SLCS I storage tank discharge valves will have adequate reliability requirements and that the valves be j

incorporated into the Operational Reliability Assurance Program. (See Subsection 93.5.4) l 93.123 Monitor Effluents From Non-Radioactive }

Systems  ;

9.7.8- 1 1 The COL applicant shall provide the following which apply on a plant-specific basis.  !

Provisions for obtaining water samples from the ji

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non. radioactive drain system shall be provided. A l sampling and analysis program shall be provided to  ;

show that radioactive liquids are not being dis-l charged from the non-radioactive drain system. t 9.3-13.2 _l Amendment l e

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