ML20236N789

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Rev 3 to Quality Instruction QI-026, Reinsp of Small Bore Piping Configuration
ML20236N789
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 02/19/1987
From: Hansel J, Schanf J, Zill R
EVALUATION RESEARCH CORP.
To:
Shared Package
ML20236N530 List: ... further results
References
QI-026, QI-26, NUDOCS 8708120111
Download: ML20236N789 (19)


Text

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'v EVALUATION RESEARCH CORPORATION UNCONTROLLED COPY l

l COMANCHE PEAK RESPONSE TEAM QUALITY INSTRUCTIONS FOR ISSUE-SPECIFIC ACTION PLAN VII.c INSTRUCTION NO.: QI-026 4

REVISION: 3 EFFECTIVE DATE:

02-19-87 t

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(y REINSPECTION OF SMALL BORE PIPING CONFIGURATION i

Prepared by:

Date:

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Approved by:

/Ff Date: l2.-/3 @

l Iss Coordinator G

Approved by:

Date: [- IN-72 On-Site QA Rep ent'ative l

Approved by:

Date:

s QA/

Review ' Team Leade'r 8708120111 870731 PDR ADOCK 05000445 i

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  • QI-026 Rev. 3 1.0 PURPOSE H /(~'N,,J.

This procedure provides instructions and guidance for determining l

j whether the small bore piping configuration meets the requirements of the design documents and drawings.

2.0 APPLICABILITY This procedure should be implemented for all small bore piping configuration inspections.

Small bore pfping configuration inspections shall include all ASME III rode Class 1, 2, or 3 piping shown on the Brown & Root piping isometr.e and Stone & Webster piping isometrics for the Unit 1 Diesel Generator skid piping. The boundary shall include:

2.1 All safety related piping and fittings with nominal pipe diameter 2 inches and smaller.

2.2 All safety related in-line pipe components (i.e., shut-off valves, strainers, bolted joint locations, etc.).

2.3 All safety related in-line instrumentation control and indicating devices (i.e., flow elements, temperature sensing, elements, pressure sensors, orifice flanges, etc.)

2.4 All. branch process connections (i.e., sockolet, weld-o-let,

( s) tee) coming off 2 inch and smaller safety related pipe.

2.5 All vent, drain and instrument connections coming off safety related piping up to and including the root isolation valves (s).

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3.0 REFERENCES

3.1 CPP-009, " Performance of Reinspection and Documentation Review."

3.2 Description Memorandum QA/QC-RT-347, dated August 14, 1984, delineating documentation used in development of procedure j

including specific sources for attributes and exclusions.

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-4.0 GENERAL 4.1 Reinspection are performed and docunented in accordance with established project procedures and instructions. This instruction establishes the attributes and accept / reject criteria for reinspection of small bore piping configuration (see Reference 3.1).

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QI-026

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5.0 INSPECTION PROCEDURE

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Reinspection of piping shall be limited to that piping which is

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designated as ASMI III, Code Class 1, 2 or 3 pipe.

The pipe code class may be determined by the last number in a line number, i.e.,

the final 2 in line number 3"CA-2-011-152-2 indicates ASME III Code l

Class 2 pipe. An alternative method is by the use of spool

numbers, i.e.,

3 Q

2 indicates spool number 3 ASME III code Class 2.

Verification of the attributes to be inspected will be re:orded on l

the Comanche Peak Response Team Checklist, Attachment 6.1.

5.1 General Requirements The following tolerances shall be used in checking the orientation of piping and piping system components unless specific tolerances are identified with a specific attribute, Slope:

Minimum slope as identified on the piping

,- s isometric drawing.

(

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Centerline Elevation:

!2 inches in vertical plane.

Location:

12 irches in the horizontal and vertical plane for all piping.

Linear:

All pipe and pipe component lengths shall be within 12 inches of the linear dimension shown on the piping isometric drawing.

When measuring piping or piping component in-line dimensions and location, a measuring device with increments of l

not greater than 1/16 inch is required. For measuring angles the instrument used must be incremented in 1 degree increments.

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Established reference points, such as permanent bench marks, shall be the base reference used to establish the elevations and N-S, E-W location point on the piping isometric drawing.

From this point plumb lines, lines with line levels, direct measuring tape measurements, transits, etc. may be used to establish locatica.

5.2 Piping Orientation NOTE: Alphanumerics in parenthesis following the attribute

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refers to the checklist number.

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'QI-026-j Rev. 3 1

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i 5.0 INSPECTION PROCEDURE (Cont'd)

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k 5.2 Piping Orientation (Cont'd) 5.2.1 Component Sequence (1.a)

J Visually inspect to ensure valves, branch connections, vente, drains, sample connections, orifices, flow elements and/or other inline piping components are l

1 installed in the sequence shown on the piping isometric. Deviations from the sequence shown on the isometric drawing are not permitted.

5.2.2 Centerline Elevation (1.b)

Ensure that centerline (CL) elevations of horizontal piping-is in accordance with the isometric drawing. No pipe shall be located such that the CL elevation'is l

outside the tolerance defined under " General l

Requirements" (see paragraph 5.1), hereaf ter referred i

to as tolerances.

5.2.3 N-S, E-W Location (1.c) p Ensure that the pipe run or piping component which is located with N-S, E-W dimensions is installed in p

accordance with the locating dimensions given on the

~G piping isometric. No pipe run or piping component located by N-S, E-W dimensions shall be located outside the allowed tolerance (see paragraph 5.1).

If N-S, E-W locating dimensions are not contained within the reinspection boundaries of the piping isometric, this attribute may be marked "N/A" i

1 5.2.4 Linear Dimensions (1.d)

Ensure that the actual piping dimensions are in agreement with those shown on the piping isometric.

All linear dimensions shall be taken from i

center-to-center, end-to-center, face-to-center, or

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end-to-end as applicable.

"he in-line linear l

dimensions of piping components, valves, instrument connections, vents, fittings, piping length etc, shall be governed by the linear tolerance for piping (see paragraph 5.1).

Couplings in-line dimensions shall be verified if dimensioned on the isometric drawing.

5.2.5 Branch Connections (1.e)

Visually check to ensure that branch connections are in accordance with the piping isometrics, i.e., if an ANSI tee is required substitution with a weldolet or welded branch connection is not acceptable.

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01-026 Rov. 3 5.0 INSPECTION PROCEDURE (Cont'd) h L(,)~

5.2 Piping Orientation (Cont'd) i 5.2.6 Piping Clearance (1.f) 5.2.6.1 For pipes with operating temperatures cf 200'F and above ensure that the CL of the pipe is within 1/4 inch of the sleeve CL unless otherwise noted on the isometric.

For lines with operating temperatures of less than 200'F ensure a minimum of 1/2 inch clearance between the pipe 0.D. and the sleeve I.D.

Any deviations to the above clearances shall be brought to the attention of the QA/QC Support Engineer.

Four measurements shall be provided, taken at 90 degrees apart, between the pipe OD and the sleeve ID.

Line temperatures and insulation requirements are identified on Attachment 6.2.

(See Note 1 and 2 below) 5.2.6.2 Ensure that a minimum of 2 inches clearance is maintained, including pipe insulation, I

with respect to other piping when the line to be inspected has an operating temperature of 200*F and greater. All other lines may be installed with a minimum of 1 inch clearance, g

including insulation, with respect to other piping. Notching of insulation is l

acceptable in order to maintain the above clearances. Line temperature and insulation i

requirements are identified on Attachment I

6.2.

(See Note 1 and 2 below) f Note 1: The operating temperature for branch lines, i.e., vents, drains, instrument and local sample connections, not identified by line

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number shall be the same operating temperature as the run pipe. These branch lines are not required to be identified on.2 Note 2: When piping is not insulated at the time of inspection, clearance shall be determined based on the existing conditions. The insulation thickness specified on Attachment 6.2 is not required to be used by the ERC inspector to' estimate pipe clearances when the pipe is uninsulated at the time of inspection.

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5

-QI-026 Rsv. 3 5.0 ~ INSPECTION PROCEDURE (Cont'd)

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l 5.2.6.3

. For pipe operating at 200'F or greater a minimum of 1 inch including insulation, shall be maintained between the pipe or pipe insulation and hangers, walls, ceilings, hand rails, etc.

All other lines may be installed for insulation clearance only. Notching of insulation to maintain clearance is acceptable. Line temperatures and insulation requirements are identified on Attachment 6.2.

(See Notes 1 and 2 above) 5.2.7 Nominal Pipe Size (1.g)

Ensure that the nominal pipe size is in accordance with the piping isometric. Either circumferential or direct measurement of.the outside diameter using an instrument capable of measurements in increments of a 1/16 of an inch may be used. Attachment 6.3 may be used to verify the specified nominal pipe size.

5.2.8 Slopes (1.h)

Ensure that the minimum slope requirement is in accordance with the piping isometric. A combination of levels, line levels and linear measurements using an'

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instrument with 1/16" increments is acceptable for 1

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establishing slope. Known C.L. elevations may also be used to calculate slope.

5.2.9 Mechanical Joint Location (1.1)

Verify that all bolted flange joints are dimensionally located in accordance with the piping isometric.

Tolerance shall be as previously specified for linear dimensions. Ensure that threaded joints are located as shown on the isometric. Exact location of the threaded joint is not required.

5.3 Valves 5.3.1 Elevation (2.a)

Verify that the CL elevation of all in-line valves is in accordance with the piping isometric drawing and that the orientation of instrument valves is per the piping isometric drawings.

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QI-026 Rav. 3 5.0 INSPECTION PROCEDURE (Cont'd) 5.3 Valves (Cont'd)

NOTE:

Exact CL location of vent, drain, instrument, and sample root isolation valves is not required. However, the orientation shall be in accordance with the piping isometric drawing and the length of the pipe nipple shall be subject to the linear tolerances.

l 5.3.2 Stem Angle (2.b)

In horizontal pipe lines, ensure that the valve stem orientation is within t 5 degrees of the orientation shown on the piping isometric drawing. For valves 2 inches in diameter and under in horizontal pipe lines

-where the specific orientation is not.shown on the isometric, the valve stem shall not be locaced below the horizontal.

In vertical pipe lines the stem angle shall be oriented to avoid interference.

5.3.3 Valve Identification Number (2.c)

Obtain valve serial number from the ASME III identification plate located on the valve when available. Record this data and other data as

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f dentified on Attachment 6.4 for engineering evaluation.

5.3.4 Flow Direction (2.d)

Verify that the flow direction for the type of valves listed below is in compliance with that shown on the piping isometric drawing:

a.

Check Valves b.

Flow Control Valves c.

Excess Flow Check Valves d.

Angle Check Valves e.

Metal Diaphragm Valves 1.

Rockwell 2.

Kerotest f.

Butterfly Valves g.

Others where noted on the checklist.

,The flow direction shall be verified by the flow arrow on the valve body or by the configuration of the valve body. Additional guidance to determine flow direction will be provided by the engineer, as requested.

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QI-026 Rxv. 3 5.0 INSPECTION PROCEDURE (Cont'd)

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NOTE:

The QA/QC Support Engineer shall include the type of valve after the valve location number in column 1 of Attachment 6.4.

5.4 Eccentric Reducers 5.4.1 Orientation (3.a)

Verify eccentric reducers are oriented in accordance with the isometric drawing.

5,5 This section has been deleted.

5.6 Orifice / Flow Element Assemblies 5.6.1 Flange Tap Orientation (5.a)

Visually inspect to ensure that instrument line taps on orifice flanges are oriented as shown on the isometric

drawings, t

NOTE:

This criteria only applies to instrumentation orifices and not to those orifices whose only gs3 function is flow restriction (see Section i

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5.6.3 for method of identification).

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5.6.2 Location (5.b)

Verify that the orifice flange is dimensionally located in accordance with the piping isometric drawing within 12 inches.

5.6.3 Identification (5.c)

Ensure that the orifice plate Tag Number is in accordance with the isometric. An example of the Tag Number for a flow restricting type orifice is CP-1-CTORCS-06 and for a flow element, FE-4469.

5.6.4 Flow Direction (5.d)

The flow direction is indicated on all Flow Elements.

Perform a visual inspection to verify that flow direction through the flow element is in accordance with the isometric drawing.

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4 QI-026 Ray. 3 5.0 INSPECTION PROCEDURE (Cont'd) 5.7 Expansion Joints 5.7.1 Identification (6.a)

Verify that the name tag on the expansion joint is in accordance with the piping isometric drawing. The QA/QC Inspector shall review the data on the manufacturers expansion joint drawing with that shown against the installed joint to determine acceptability.

5.7.2 Tie Bars (6.b)

Ensure that all temporary tie bars have been removed from the expansion joints. Ensure that permanent tie bars have not been removed.

5.7.3 Dimensions (6.c)

Ensure that the end-to-end dimension of the expansion joint is in accordance with the vendors instructions and that the piping system has not forced the expansion joint out of alignment. Tolerances shall be in accordance with the manufacturer's drawing. System operation is not acceptable during reinspection nor is the operation of connected systems allowed unless the

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connected system is isolated from the expansion joint by a system pipe anchor.

NOTE:

For those reinspection packages with isometries showing expansion joints, a copy of the manufacturers expansion joint drawing has been included as an attachment to the reinspection package.

5.8 Screwed Joints 5.8.1 This section has been deleted.

5.8.2 This section has been deleted.

5.8.3 Joint Sealant (7.c)

Visually inspect for any evider.ce of the use of teflon tape on threaded joints. Any evidence of the use of teflon tape shall be cause for rejection of the joint.

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01-026 I

Rev. 3 R:

l 5.0 INSPECTION PROCEDURE (Cont'd) t i

5.9 Strainers 5.9.1 Identification Number (8.a) l Obtain the Strainers Serial Number from the ASME Identification plate location on the strainers when available. Record this data and cther data as l

identified on Attachment 6.6 for engineering

'I evaluation.

5.9.2 Flow Direction Verify the flow direction is in accordance with the isometric. Either flow' arrows on the strainer body or the manufacturer's drawing may be used to determine flow direction.

For those reinspection packages-including strainers a copy of the manufacturer's

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drawing will be included as an attachment to the reinspection package.

5.10 Moment Restraints t

5.10.1 Identification (9.a)

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Moment restraints are an integral part of the piping system pressure boundary. Verify the tag number on the moment restraint is in accordance with the piping isometric drawing.

The QA/QC Inspector shall review the data on the manufacturers moment restraint drawing with that shown against the installed restraint to-determine acceptability.

5.21 Elbows 5.11.1 Identification (10.a)

Verify that the type of butt welded elbow installed is in accordance with the isometric.

Specifically, butt welded long radius elbows and short radius elbows are installed as required. Attachment 6.7 contains dimensional data to identify each type of elbow.

(Unless otherwise indicated on the piping isometric, butt welded elbowa shall be long radius.)

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QI-026 Rev. 3 6.0 ATTACHMENTS (j

6.1 Comanche Peak Review Team Checklirt 6.2 Insulation Data 6.3 Pipe Size Table 6.4 Valve Data 6.5 This Attachment has been deleted.

6.6 Strainer Data l

6.7 Welding Fittings l

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___________J

COMANCHE PEAK RESPONSE TEAM

..1 CHECKLIST QI-026 Rev. 3

/

ggggg VERIFICATION PKG NO.

CONFIGURATION 0-PAE 1 0F 2 QUALITY INSTRUCTION QI-026 X REINSPECTION C UNIT 1 EQUIPMENT MARK / TAG NO.

DOCUMENTATION REVIEW O Uutt 2 COMMON VERIFICATION AMIME ACCEPT REJECT DATE

1. Piping Orientation
a. Component Sequence
b. Centerline Elevation

_c.

N-S,E-W Location

d. Linear Dimensions a'
e. Branch Connections
f. Piping Clearances e

,g.

Nominal Pipe Size

h. Slope
1. Mechanical Joint Location
2. Valves
a. Elevation i
b. Stem Angle 1

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c. Valve Identification No.

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d. Flow Direction l

PREPARED BY:

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APPROVED BY:

1 DISCIPLINE ENGR.

DATE LEAD DISCIPLINE ENGR.

DATE INSPECTED BY:

APPROVED BY:

l LN5?ECTOR DATE LEAD INSPECTOR DATE CPP-007.lA, Revision 0 t

-_-________-___-_________-_-__-_a

COMANCHE PEAK RESPONSE TEMi.1 CHECKLIST QI-026 Rev. 3 POPULATION DESC VERIFICATION PKG NO.

SMALL BORE PIPING CONFIGURATION I-M-SBCO-VERIFICATION A

ACCEPT REJECT DATE D#3

3. Eccentric Reducers
a. Orientation
4. Deleted 5.

Orifice / Flow Element Assemblies

a. Flange Tap Orie.itation
b. Location
c. Identification e'

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d. " low Direction 6.

Expansion Joints

a. Identification
b. Tie Bars
c. Dimensions 7.

Screwed Joints

a. Deleted
b. Deleted
c. Joint Sealant 8.

Strainers

a. Identification No.
b. Flow Direction 9.

Moment Restrainto

a. Identification

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10. Elbows
a. Identification C??-007.ts.

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AttachmInt 6.3 QI-026 Rev. 3 Page 1 et 1 LARGE BORE PIPING CONFIGURATION

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m-PIPE SIZE TABLE

  • NOMINAL PIPE SIZE (IN.)

ACTUAL OUTSIDE DIA. (IN.)

1/2 0.840 3/4 1.050 1

1.315 1 1/2 1.900 2

2.375 2 1/2 2.875 3

3.500 3 1/2 4.000 4

4.500 6

6.625 8

8.625 10 10.750 12 12.750

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14 In. & LCR.

Same as Nominal Pipe Size

  • Actual outside diameter (IN.) has been extracted from CRANE Technical Paper.

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