ML20092G989

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Rev 2 to VEGP-27505-C, Opening & Closing Containment Equipment Hatch
ML20092G989
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 07/18/1988
From:
GEORGIA POWER CO.
To:
Shared Package
ML20092F288 List: ... further results
References
CON-IIT05-127-90, CON-IIT5-127-90, RTR-NUREG-1410 VEGP-27505-C, NUDOCS 9202200417
Download: ML20092G989 (8)
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REASOITS FOR REVISIOT DATE 0

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VEGP 27505-C 2

2 of 8 1.0 PURPOSE This procedure, provides instructions for opening and/or closing of 20' diameter Containrent Equipment Hatch Door.

2.0 PRECAUTIONS AND LIMITATIONS 2.1 If only portions of the procedure are required:

2.1.1 Contact the Me.'ntenance Foreman.

2.1.2 Use only the steps that apply.

s used in the comments section of the Docuuet the step' Data" sheet.

2.1.3

" Completion" or 2.1.4 N/A the steps that were not used.

2.2 Steps in tl.is Procedure mr/ be performed out of Sequence only:

2.2.1 With prior approval of the Maintenance Foreman.

2.2.2 If they do not violate the intent of the Procedure.

2.2.3 Are documented in the " Comments" section of the O

" Completion" Sheet.

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2.3 Maintain area cleanlinnes in accordance with Procedure 20427-C

" Maintenance Cleanlineca And Housekeeping l

Control".

2.4 hinimize damage to mating surfaces of hatch and door when moving door.

2.5 FOLLOW INSTRUCTIONS ON THE RADIATION WORK PERMIT (RWP),

l 3.0 PREREQUISITES _AND INITIAL CONDITIONS 3.1 Determine the safety classification of the hatch and, if applicable:

3.1.1 Check the ap,propriate classification on the

" Completion or " Data Sheet".

3.2 Prior to beginning work, notify QC ifs 3.2.1 Holo points are indicated on the " Completion" AND/0R

" Data Sheet".

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vicP 27505-C 2

3 of 8 3.2.2 The LWO/ Work' Package has a QC hold point.

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3.3 Obtain a Radiation Work Per it (RWP) from Lab Supervisor or designated alternate prior to starting work.

3.4 Ensure sufficient spare parts (including gaskets) are on hand BEFORE starting work.

3.5 Ensure cleanliness class is marked on the MWo.

l 4.0 OPENING AND CLOSING OF DOOR CAUTION The shnar/ guide lugs may damage the machined gasket sealing surfaces AND the removable cover may damage the gaskets.

4.1 OPENING OF DOOR 4.1.1 Verify that all prerequisites and initial conditions

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have been met, as applicable.

4.1.2 Notify Shift Supervisor of work to be performed.

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4.1.3 Ensure that door lif ting hoists cables have sufficient tension to support weight of door.

4.1.4 Loosen 30 hex cuts and spherical washers from door flange and swing bolts away from door (nuts do not have to be removed in order for eyebolts to swing clear).

4.1.5 Remove the cover from the opening and clear of the shear / guide lugs.

4.1.6 Raise the removable cover to the stored position and support the cover on the guide becm support.

4.2 CHECKOUT 4.2.1 Check sealing surfaces for imperfections.

Repair

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as necessary.

4.2.2 Check threads of bolts and nuts for damage.

Repair

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or replace as necessary.

4.2.3 Visually check the door and hatch mating surfaces for

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cleanliness and are free of burra.

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VEGP 27505.C 2

4 of 8 4.2.4 Visually check gaskets for defects.- Replace as l

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necessary.

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4.2.5 Clean, check, and lubricate (never-seez) swing bolt j

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threads.

l 4.3-CLOSING OF DOOR CAUTION The shear / guide lugs may damage the machined gasket sealing surfaces and the removabic cover may damage the gaskets.

4.3.1 Carefully lower the cover from the stored position to the opening and align it with the barrel flange.

The shear / guide lugs are provided to unist in alignment and final positio ing.

4.3.2 Select four (4) eyebolts located equal distances apart, swing these eyebolts into the bolt chairs making sure the spherical washers are inserted between the nut and bolt chair.

4.3.3 Tighten the nuts on the four eyebolts until the gasket O

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sealing surface on the removable cover contacts the gasket.

4.3.4 Swing the remaining eyebolts into their respective bolt chairs, make sure the spherical washers are inserted between the nut and the bolt chair.

4.3.5 Run all nuts down finger tight.

CAUTION Over tightening nuts more than required for ordinary manual wrenching methods may cause damage.

4.3.6 Tighten all nuts in sequence.aown (Figure 1).

Repeat sequence until hatch sealing surface makes metal to metal contact with the barrel flange.

4.3.7 Verify double seal is pressure tested.

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4.3.8 Notify Shift Supervisor that required maintenance is

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complets.

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5 of 8 5.0 ACCEPTANCE CRITF.RIA 5.1 Mair enance performed using this procedure is l

acceptable when:

5.1.1 The " Completion" Sheet is properly filled out..

5.1.2 Deviations from the Procedure data and re:ommended settings have been reviewed on a case-by-case basis with the Maintenance Foreman.

5.1.3 Deviations have been identified in the "Co aments" section of the " Completion" Sheet.

5.1.4 The " Completion" Sheet has been approved.

S.1.5 Maintenance Work Orders nave been written and submitted for conditions evaluated as needing attenti.

6.0 REFERENCE _S.

6.1 AX2AG07-38

" Absolute Pressure Test Procedure Double Seal. Interspaces" 6.2 AX2AG07-210

" Equipment Hatch Operation and Maintenance Manual".

v 6.3 PROCEDURES 6.3.1 25250-C,

" General Rigging And Lifting" 6.3.2 20427-C,

" Maintenance Cleanliness And Housekeeping Control" END OF PF.0CEDURE TEXT O

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f4Evi$10N PAGE NO ygov 27505-C 2

6 of 8 TORQUE SE9U "

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7 of 8 VEGP COMPLETION SHEET Proce Gre No.

Revision Page 27505-C 2

1 of 2 _,

Tag No.

. Description CONTAltaiENT EQUIPMENT HATCH DOOR

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Serial ho, linnuf ac turer Model

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CHICAGO BRIDGE AND IRON Test Equipment Used M6TE

[] Safety Related-QC hold pointo

[] Non-safety Related PROCEDURE MAINT.

HOLD QC STEP DESCRIPTION INIT/DATE POINT INIT/DATE (Tei7No)~~

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4.1.1 Verify all prerequisites met

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4.1.2 Notify Shift Supervisor

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4.2.1 Check sealing surfaces

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4.2.2 Check threads of nuts and bolts

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4.2.3 Check mating surfaces

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4.2.4 Check gaskets 4.2.5 Check bolts

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4.3.3 Tightening Sequence

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4.3.7 Pressure Test

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4.3.8 Notify Shift Supervisor

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VEGP 27505-C 2

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.I Conunents/sdditional hold points:

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6 QC has reviewed this procedure for hold' points Signature APPROVED ( )

DISAPPROVED ( )

COMPLETED BY DATE FOREMAN DATE O

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