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TEXAS UTILITIES GENERATING CO. NU . REVISION O E PAGE

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PREPARED BY: #7/ /8 / /52

AS-80ILT PIPING / 8VERIFICATION APPROVED BY. // [$ F:

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INSTRUCTIONS .

APPROVED BY . (_. M $LDATE &

1.0 REFERENCFJ

1-A CP-EI-4.5-1, "As-Built Piping Verification"

2.0 GENERAL -

con u'a'-CRMATICM 0$*4 L lD f-.

" "2.1 PURPOSE AND SCOPE

This instruction establishes the method utilized by the QAAs-Built Coordinator to conduct verification of stressproblem packages issued in the As-Built Piping Verification

( Program (Reference 1-A)..

2.2 DEFINITIONS -

Drawing Package - B RP and BRHL drawings having the samedrawing number and associated BRH hanger sketches.

2.3 EQUIPMENT

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2.4 DOCUMENTATION

All markings on drawings, specified in this " instruction, '

shall be in red ink. All drawings used for As-Built.

Verification shall have an open "As-Buil t" revision and;'

shall be controlled issue by Technical Services As-Built+

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Coordinator.

Blueline drawings for each BRP and BRHL shall be issuedto the QA As-Built Coordinator. The QA As-Built Coordinatorwill issue work copies of each for field verification.After verification of drawings, all red marks will be neatly

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transferred to the record drawing for returning to theTechnical Services As-Built Coordinator.

Field work drawings shall be retained by QA As-Built for' final review and closure of the As-Built revision.

3.0 INSTRUCTION

(3.1 AS-BUILT TAGS

As-Built tags (Attachment 1) shall be attached to all| hangers and in highly visible locations on pipe prior to

su rvey. All requi red infomation shall be shown on eachtag. Location, however, will be listed as the applicablestress problem number.,

' Prior to perfomance of any work on a tagged line or itscomponents, the QA As-Built Coordinator shall be consulted.

3.2 VERIFICATION OF BRP DRAWINGS

3.2.1 Dimensions'

At least one point en the pipe configuration on each stressproblem will be verified for reference location to column

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lines..s

All dimensions verified shall be accurate within 22 inches.,

Elevations veriff'ed, sh'al.1 be accurate within 1 inch.'

If a dimension is a's- per drawing it shall be circled andchecked. If a dimension is at variance with the drawingit shall be circled and the As-Buil t dimension written,

adjacent to the circle. j

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a. Elevations , for each BRP, shall be in reference to; a single bench mark. . -

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Whenever possible a surveyor's level and a level rod -,

i shall be used to determine elevations. If necessary, ai -

steel tape may be used to measure vertical lengths.

b. Horizontal dimensions shall be verified by measurementto and from defined points, i.e.; tangent intersectionpoints, support centerline, etc.. Such measurementsshall be taken using a steel tape and plumb bob (whennecessary) to obtain a true horizontal length,

c. If a vertical run of pipe can be detemined to beout-of-pl umb, the Technical Services As-BuiltCoordinator will be contacted to determine the degreeof plumbness required.

3.2.2 Valves

The valve location and mark (type) number shall be verified.For all valves 2S inches nominal pip'e size and larger, aswell as power actuated 2 inches nominal pipe size andsmaller valves, the valve orientation shall be shown on theBRP and verified.

If the valve is oriented as per drawing it shall be circledand checked. If orientation is at variance with drawingthen the valve will be circled and the actual orientationshall be written adjacent to the dircle.

3.2.3 SleevesI

The following infomation shall be verified for all pipingpassing through structural walls and floors.

a. Identification of pipe sleeve shall be shown on BRP andthe Sleeve Take-Off (Reference 1-A). Numericalidentification numbers shall be assigned for each BRP.

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b. Sleeve eccentricity (if any) shall be detemined bymeasuring the clearance between the pipe and sleeve in4 positions, two horizontal and two vertical. Thisinfomation will be shown on the Sleeve Take-Off, and

_ shall be verified to 11/8 inch.s

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c. If PDRF's are incorporated as part of the As Builtpackage, then for that unique sleeve, inYomation onthe PDRF shall be verifed as in "b" above. -

d. Location of sleeve with respect to associated pipeshall be shown on BRP drawing, by dimensionverification described in 3.2.1. _

3.2.4 Interconnecting Equipment

All interconnecting equipment such as pumps, tanks ,strainers, etc. shall be clearly identified on the BRP. Thisshall include as a minimum the equipment mark number. Theorientation of any item that is totally supported by theinterconnecting piping shall be clearly shown on the BRP.

If the above infomation is found to be as shown on drawing,the equipment item shall be circled and checked. If thereexists some variance then the item shall be circled and the,

i appropriate infomation shall be noted adjacent to the circle..

3.3 VERIFICATION OF BRHL DRAWINGS:

All BRHL drawings shall be verified to ascertain thefollowing:

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a. The number of installed hangers agrees with the numbershown on the BRHL. This shall be shown on Section IIIof the As-Built Checklist (Reference 1-A).

b. The actual mark numbers agree with 'the mark numbersshown on the BRHL. If this is the case, the numbershall be circled and a check shall be made adjacentto the circle. If the numbers do not agree the numberappearing on the drawing shall be circled and theactual mark number written adjacent to it or the BRH '

drawings will be referenced with mark numbers found.

c. The dimensional location of each support shall beverified and recorded in manner delineated in 3.2.1.

d. Hangers designated anchors that are cast in concreteshall be verified in place. This shall be shown on |

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_ Section III of the As-Built Checklist. l

3.4 VERIFICATION OF GHH-BRHL ORAWINGS:

All GHH-BRHL drawings shall be verified according to 3.3.

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3.5 VERIFICATION OF BRH'S.

3.5.1 Installed Hangers

All BRH hanger sketches shall be verified to ascertain thefollowing:

a. The actual configuration of the hanger agrees with thatshown on the BRH.

b. The orientation of the hanger agrees with theorientation shown on the BRH. i'

c. The ' total clearance between the hanger and the pipe isequal to that shown on the BRH.

All of the above shall be documented on Section III of theAs-Built Checklist. Additionally, the Inspector will circleand check the BRH number on the BRH if (a) and (b) are( correct. If not, the number shall remain unmarked and theQA As-Built Coordinator shall be notified, so that he thenmay take the necessary steps to correct the drawing or thehanger.-

The As-Built Inspector will also mark the BRH for Item (c)in the manner delineated in paragraph 3.2.1.

3.5.2 Non-Installed Hangers *

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If a hanger is not installed, the clearance around the pipe,

will be checked to assure that the hanger can be installedper design drawing. If the support cannot be installed, itshall be so noted on the BRHL.

3.6 AS-BUILT CHECKLIST

Upon completion of the As-Built verification in the field,the QA As-Built Inspector shall review the drawing package(see definitions) and complete Section III of the As-BuiltChecklist. The package is then reviewed by the QA As-BuiltCoordinator and combined with other drawing packages in thesame stress problem. This combined package is thenreturned to the Technical Services As-Built Coordinator.

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REVISION PAGE.

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