ML20059C793

Rev 5 to Sys Description 3184-007, Solid Waste Staging Facility

ML20059C793
Person / Time
Site:	Three Mile Island
Issue date:	08/23/1990
From:	Buchanan D, Carmel P GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20059C788	List: ML20059C785 ML20059C793
References
3184-007, 3184-7, NUDOCS 9009050340
Download: ML20059C793 (6)

Text

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DIVISION SYSTEM DESCRIPTIOh!

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Solid Waste Staging Facility i

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Tam Pa ge. 2 of 18 Solid Waste Staging Facility System Jescription l

Rev.

SUMMARY

OF CHANGE Approval Date O

Initial issue per GPU Nucicar letter 4400-82-L-0059.

4/82 1

Reissued per GPU Nuclear letter 4410-83-L-0078.

3/83 2

Annual update.

7/85 t

3 Annual update.

7/87-4 Annual update. Revised Sections 2.1.2, 2.1.3.2, 2.4.9, l

and 2.4.3.1..

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5 Annual update. Minor changes to Sections 2.4.1, 2.4.7 2.4.8. and Table 3.

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2.3.4 Quality Assurance requirements for the design, construction, and

.l operation of the SWSF are consistent with those specified in Regulatory Guide 1.143.

2.4. Sumary System Description I

2.4.1 The concrete structure and individual cell covers provide the necessary shielding from tha radioactive waste housed in the SWSF i

Module Storage' Cells.

i The cell covers with gaskets protect the waste containers from the elements and the ingress of precipitation. Slots and weep holes in the upper module structure are provided to. direct rainwater to the module sides.

A drainage piping system prevents any spillage / leakage of fluids from accumulating in the cells. (i.e;,

floor drain hub in each cell); the system manifold discharges into a common sump.

2.4.2 The sump compartment, a radwaste seismic concrete structure, l

houses the pump, valves, piping, instrumentation, etc., necessary to perform the intended functions.and control the disposal of any effluent which may collect in the sump.

The compartment is divided into two (2) levels, with the upper operator level shielded by a thick concrete floor from the sump. Access to the upper compartment is via a manhole in the concrete slab roof.

Access to the sump is via a removable ladder at the sump plug opening and a permanently installed ladder into the sump.

2.4.3 The flow diagram (Figure 3) shows the pumping system for the sump ef fl uent. All operations. are local / manual.

The local alarms and sump level indication are housed-in a weatherproof instrumentation panel mounted outside the Module "A" structure adjacent to the sump compartment.

The sump pump, Solenoid Valve #WS-5 and three-way valve fWS-1 (extension spindle) are located in the lower sump while the electrical distribution and control panels, valves, etc. are mounted in the operators compartment.

Sump level is measured by a variable capacitance sensor (SWS-LE-01) which transmits tne signal to local and remote (Unit 2 Control Room) alarms. Sump influent flow alarms ar6 provided.

The sensing elements (conductivity) Nos. SWS-CE-07 and SWS-CE-08 are mounted in the Module "A" and "B" drain system manifold.

2.4.3.1 Sump Pumping Operations (See Figure 3)

The SWSF sump is controlled and disposal of the effluent is in accordance with the Unit 2 Procedures 4210-0PS-3011.01 and 4215-0PS-3232.14.

The sump compartment is posted as a radiological controlled area and surveillance is required prior to entry to ensure operator exposure will be as low as is reasonably achievable (ALARA). Rev. S/0051P

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3184-007

2.4 4 Maja; Equipment c

i A.

Sump Pump (1): Guuld Model 3171 1 x 1-l/2-6 Capacity:

50 gpm TDH:

100 ft Fluid:

Radioactive waste water / resin slurry pH approx. 7 Material s:

Cast iron / bronze fittings Impeller:

Open type Discharge Conn.: Flanged above mtg. plate Service:

Intermittent 5 ye. life B.

Solenoid Valve (1):

1/2" nom. bore. 120 volt AC C.

Instrumentation: See Table 1.

2.4.5 Facility General Arrangement:

See typical layout Figure 2.

The general arrangement, layout, and details of the SWSF systems are shown in the drawings in Section 2.2.3.

2.4.6 Instrumentation and Controls 2.4.6.1 The SWSF has three (3) instrument loops as follows:

A.

A level instrument string provides tne alarm and level indication both local and remote.

In addition, this loop provides a sump pump permissive at greater than 10% level.

B.

The other two (2) instrument strings are conductivity flow loops providing % cal alarms.

input from the drain u One (1) loop senses and the other from Modt..-Uge manifold from Module "A" "B".

2.4.6.2 Instrument Setpoint Index (see Table 2).

2.4.7 System Interfaces There are five (5) interfaces associated with this facility:

1.

Processing Systems: Access road to and from waste and fluid processing fecilities for transportation of materials and equipment.

2.

Material Handling System:

eacility will accept radioactive waste containers from the processing systems and are compatible with the transportation and lifting equipment (i.e., transfer snield and site cranage) (Manitowoc 4000 W mobile crane or other appropriate crane). Rev. 5/0051P

P L3184_-007 g ". N 'S c:

p jY 3.z Cooling Water Pump'(CHP) House: 480 V; 3 0'200: A feeder cable /'

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ifrom Bus 2-61; shall ' provide _ power for. th foilowing:

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A.

460- volts-to: the - sump' pump; B;- l480 volt welding receptable; and

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25 KVA, 240-120V power center to' energize lighting, convenience receptacles, instrumentation, and control.

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devices.-

-NOTE:

No' permanent heat tracing required for sump -

1 compartments.

4. - Control Room: Sump level alarm.

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Chemistry Laboratories:- Sump _ effluent samples for chemistry and radiological analysis prior to distribution; NOTE:

The sump-pump discharge is not directly connected to-any plant systems;= a local: hose station is provided.

2.4.81 Operations-Radwaste Handling R

' The major' operation performed a't the SWSF is handling the' j

radioactive wasto containers while loading / unloading the o

individual cells in accordance with the types of containers q

specified in'Section 2;1.3. Handling of these containers is performed in t:cordance-with Unit 2 procedures. The Manitowoc-Mobile Crane, or other appropriate' crane (s), is utilized ~ for handling activities-along with appropriately shielded equipment.

Each cell has an-individual concrete cover 8'3" square x 3'0" deep (Dwg. ~ #B-430-015) weighing approximately 1_4' tons. Normally. only.

'one (1)-cell'containing radioactive waste containers within a E

module system-will be-uncovered at any given time.

If more than one (1) cover'is to be removed 'at any one time, additional safety procedures will be exercised.

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,K 2'4.9 Maintenance q

.Most operations including maintenance requires a RWP.

Inner i

surfaces of the sump'are epoxy coated to ease decontamination of the facility.

- 2.4.10 Acceptance Testing 2.4.10.1 Mechanical. Dwgs. #E-311-873 and E-311-874 A.

Module'"A" and "A" Drain Piping Systems. Rev. 5/0051P I

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O.i.'ERATING PROCE_DURES >

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1Pr'ocedure Number-Descriptioni y

l 421540PS-3232.14 SWSF= Sump. Pump. Operation -

L 4231-0PS-4440.01 Transfer of 'EPICOR 4,'x4' Liners 7

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-.4231 -0PS-4450.08' On-site' Transfer of Radioactive Liners _to:SWSF/ Ship Cask

~".,,n L 4231LOPSL4450.09 On-site-Trans#er of: Radioactive Liner from SWSE.'

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4231-0PS-4450.20

. Transfer of 4'x4' Liner / HIC from SWSF

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