ML20097E022

Forwards Addl Info Re Preservice Insp Relief Request F-1,in Response to 920526 Telcon.Approval of Subj Request Requested by 920615

ML20097E022
Person / Time
Site:	Comanche Peak
Issue date:	06/01/1992
From:	William Cahill, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-92266, NUDOCS 9206110272
Download: ML20097E022 (10)

Text

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LN Log # TXX-92266

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File # 10010

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j-Ref. # 10CFR30.55a r

n 7UELECTR!C June 1, 1992 Wullam J. Cahm. Jr.

Grrmp Vk, fresident U. S. Ntclear Regulato y Commission Attn: Document Control Desk Washington,- DC: 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NO. 50-446 REQUEST FOR ADDITIONAL INFORMATION FOR PRESERVICE INSPECTION RFLIEF REQUEST F-1 REF:

1) TV Electric letter logged TXX-92117 from William J. Cahill, Jr. to the NRC, d6ted March 31, 1992 Gentlemen:

During a telecon on May 26, 1992, your staff requested additional information regarding TV Electric's Relief Request F-1 (Ref. 1). The requested information follows:

1). The requirements for Preservice Inspection are found in Section XI of the ASME Boiler and Pressure Code, Table IWF-2500-1.

2)

Additional information requested is found in the enclosure to this letter.

Again, as requested in Reference 1, we request that.your approval be provided by June 15, 1992.

If there are any questions, please call Mr. C. E. Jensen at (214) 812-8826.

Sincerely, William J. Cahill, Jr.

By:

D. R. Woodlan Docket Licensing Manager DBim Enclosure c - Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (2)

Mr. B. E. Holian, NRR (j

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ENCLOSURE To TXX-92266 l

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Enclosure to TXX-92260 Page 1 of 4 Supplement to Relief Request F-1 Examinatiqn Component supports an examined during the initial construction phase when individual apports are complete, at the end of the construction phase when the system is being certified (N-5), during Hot FunctionalTesting, and at syste.n tumover to Operation.

The ASME Section XI Code required xe'uinations for PSI from Table IWF 25001 are listed below:

ItemNa PnrtsEmmirrrt Examina'!on Method F1.10/F2.10/F3.10 Mechanical connections to pressure VT-3 retaining components and building structure F1.20/F2.20/F3.2n Weld connections to building structure VT-3 Fl.30/F2.30/F3.30 Weld and mechanical connections at VT-3 intermediate joints in multiconnected integral and nonintegral supports 1

F1.40/F2.40/F3A0 Component displacement settings of VT-3 glides and stops, misalignment of

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suppo ts, assembly of support items F3.50 Spring type supports, constant load type VT-4 sup.corts, shock absorbers, hydraulic and mechanical type snubbers The "NA" certificate holder performs the following comparable examination during the initial construction phase:

Supports shall be fabricated and installed free of cracks, corrosion, erosion or a

physical damage.

Adequate distance must be maintained between supports and circumferential butt welds lo allow the pipe f o move, Support bast plates may have gaps less than 1/16" between the plates surface and a

concrete.

For U-bolts used on variable and censtant spring supports the u-bolt fits snugly ngainst pipe.

Fasteners are not damaged, free of extraneous material, locking devices provided, torque values are obtained or are snug tight.

t Cotter piras are instal'ed anu are of the correct size.

a Threaded hardware shall have minimum thread engagement.

Installatica of variable springs / constant supports shall be in accordance with the design drawings.

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F w-iEnclosure to Txx 92266 l"

' Page 2 of 4 g

tsupplement to -

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Relief Request F-1

- Plumbness of rods for spring type supports shall be within i *.

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Cold load settig for variable springs shall be withia i 10% of the cold load shown

. on the design d. 4 wing.

_ Cold load netting for constant supports shall be within 1/4" of the setting shown on

- the design drawing.

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. Spherical bearings (struts & snubbers) shall not be dislodged, free of extraneous -

e-j material, staked and free to swivel.

l Eyerod thread engagement for struts and snubbers shall be verified utilizing sight

holes, li

Offset angle between the strut / snubber and clamp / rear bracket shall have a

< tolerance of12', however in no case can the angle be greater than 5' y

Snubbera shall be otroked through the full operating range prior to installation.

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~ 'or snubbers, the transition kit mounting bolts shall be safety wired.

The snubber shall be installed at its cold position.

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[l Final surfaces' of support welds, the heat alTected zone hr 1/ 2" on each

., and base material shall be visually examined for:

correct size r..

- surfaces shah be free of coarse ripples, groovea, overlaps, etc.

. cracks incomplete fusicn

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weld profile -

weld overlap surface porosity -

under fill / under cut L

- Reference Procedures

. AQP-10.15. " Visual Examination of Weldments" V

L ACP-12.8 " Pipe Support Adjustments and Verification" r ACP-11.5, " Component Suppor* Fabrication and Installation"

The NA certificate holde' performs the fo lowing examinat.

during the N-5 certification

process

Remor1ble mechanicalitems (i.e., cotter pins ae rings, jam nuts and fasteners) are ly installed and exhibit no looseness.

b General configuration / support type and function.

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Strut, snubber end spring angularity.

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Enclosure to TXX-92260 1

Pag 3 3 of 4 Supplement to Relief Request F 1 1

E Snubber settings.

Strut lenghts.

Minimum clearance in unrestrained direction for one way box restraints.

Reference Procedure ACP-11.5, " Component Support Fabrication and Installation" During HfT, supports will be examined for the following comparable attributes:

Spring and snubber settings remain within their working range.

Snubbers and stmts do not bind.

Snubbers and spring cans are walked down to ensure they are adjusted to their cold settings and are unpinned prior to start of HFT.

Pipe support installations are in accordance with the current design drawing prior to start of HFT.

Snubbers have been stroked to ensure freedom of motion.

During HFT plateaus, snubber and spring settings are verified to be with thel

• working range.

During HFT plateaus, snubber and spring cans are verifled not to be topped or bottomed out and not binding.

At return to ambient temperature, snubber and spring can settings are verifled to be at the cold position.

Reference Procedure 2CP-FT-90,03, " Hot Functiont 1 Piping Systems Thermal Expansion Test" At system turnovcr from Startup to Operations, the system engineers walk the systems down to ensure:

All supports are installed.

Shipping and pre operational restraints on springs and snabbers have been removed.

Reference Procedures STA-802. " Acceptance of Station Systems and Equipment" REl-305, " System Transfer Package and Operability Status Checklist" 1

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Enclosure to TKX-02200

. Page 4 of 4 Supplernent to Relief Request F 1 ParJonnel Qgalification Personnel performing the construction and startup examinations are Mechanical level 11 Quality ControlInspectors (QCI). Qualification for Non-Destructive Examination Personnel performing VF-3/"T-4 is provided in ASME Section XI Code paragraph IWA-2300. A comparison of those requirements and the tequirements for Mechanical Level II QCI is shown below. This comparison shows that Mechanical Level 11 QCI are equivalent to VT-3/VT 4 inspectors.

VF-3/Vr-4 Rmoprg)cI]L Mechanical Level II OCI Personnel perfonning NDE shall be qualified AAP 2.3 qualifications are to in accordance with SNT-TC-1A 1980 SNT TC-1A,1080 Edition Personnel performing VT-3 shall be quallfled AAP 2.3 and AAP 2.4 qualifications in accordance with ANSI IM5.2.6 - 1973 are to ANSI N45 2.3 - 1978 Quahfication shall be based on education.

AAP 2.3 and AAP 2.4 provides the same training, expertence, and testing evaluatie requirements for education, trainind.

experience, & testing Visual aculty AAP 2.3 and AAP 2.4 requires eye exams comparable to ASME Cection XI Recertification every 3 years AAP 2.3 and AAP 2.4 provides for recertification every 3 years Reference Procedures AAP 2.3, "QA Personnel Training and Qualification" AAP 2.4, "Nondestruction Personnel Certification" Reemds Examination results from imtial construction and N-5 walkdown are maintained by the NA certificate holder in accordance with his Quality Assurance Program. At the completion of the construction activity, those records will be transferred to TU Electric. At this time the records will be placed in the TU Electric records vault and maintained in accordance with the TU Electric QA Program. HFT records and turnover walkdowns will be maintained in the TU Electric vault in accordance with the TU Electric QA program. These records will be maintained for the life of the plant.

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TABLE IWF-2500 hi

~ EXAMINATION CATEGORIES

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,3 EXAMINATION CATEGORY F-A, PLATE AND SHELL TYPE SUPPORTS Examination P.

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Item

Require nemst Examination '

Acceptarv.e Frequency of No.

Parts Examined Fig. No.

Methor Standard Extent of Examination Examination F1.10 Mechanical connections to pressure retainno IWF-1300-l '

Visual, VT-3 IWF-3410 IV's ".300 Each inspection heervat components and building structue -

IWF-2510 F170 Wald connections to building structure IWF-1300-1 Visual, VT-3 IWF 3410 t WF-1300 Each inspectwm I rterval.

lWF-2510 F1.30 Weld and mechanical connections at IWF-1300-1 Visual, VT-3 IWF-3410 IWF-1300 Each inspection interval intermediate joints in multiconnectsd.

IWF 2510 m

integral and noninteoral supports h

~ O F1.40 Component displacement set *ings of

' IWF-1300-1 Visual, VT 3 IWF ~3410

" fF-1300 Each inspection inte. vat Z

guides and stops, misalignment of l*vF-2510 x

supports, assembly of support items

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(1) Reference - IWA-2210.

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TABLE IWF-2500-1 (CONT'D)

EXAMINATION CATEGORIES g

f EXAMINAT!ON CATEGORY F-8, LINEAR TYPE SbPPORTS Examination item Requirements /

Erimination

. Acceptance Frequency of No.

Parts Examined Fig No.

Method'

' Standard E2 tent of Examination Examination F2.10 Mechanical connections to pressure retaining IWF-1300-1 Vrsual, VT-3 IWF-3410 l'NF-1300 Each inspertion int -val components and building s':ucture '

IWF-2510 W

M F 2.20 Weld connections te building structure IWF-1300 -

Visual, VT-3 IWF-3410 IWF-1300 Each inspection interval O

IWF-2510 3

M F2.30 Weld and mechanical connections at IWF-1300-1 Visual, VT-3 IWF -3410 IWF-1300 Each inspection interval

,k intermer' sate joints in multiconnected IWF-2510 M

mte,.al and nonintegral supports h

m F2.40 Crmporent displacement settings of IWF-1300-1 Visual, VT-3

!WF-341C IWF-1300 Each inspection interval

.y guides and stops, misalignment of IWF-2310

.N supports, assembly of support items n

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H (1) Reference - IWA-2' 1.

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TABLE IWF-2500-1(CONT'D1.

E EXAMINATION CATEGGRIES g

EXAMINATION CATE(.ORY F-C, COMPONENT STANDARD SUPPORTS

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Examinatian.l T. '

Item Requirements /

Enmination -

Acceptance Fremy of No.

Parts Examined Fig. No.

Method' Standard Extent of Examination Examination F 3.10 Mechanical connections to pressure retaining IWF-1300-1 V5ual, VT-3 IWF-3410 IWF-1300 Each inspection interval componmts and building structure IWF-2510 F3.20 Weld connection, to building struc*ure IWF-1300-1 Visual, VT-3 iWF-3410 IWF-1300 Each inspection interval IWF-2510 F3.30 Weld and mechanical connections at IWF-13001 Visaal VT-3 IWF-3410 IWF-1300 Each inspection interval intermediate joints in multiconnected IWF-2510 integral and nonintegral supports in F 3.40 Component displacement settings of IWF-1300-7 Visual. VT-3 IWF-3410 IWF-1300 Each inmect.on interval Z

O guides and stops, misalignment of IWF-2510 supports, assembly of support items

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F3.50 Spring type supports, constant load IWF-1300-1 Visual, VT-4 IWF-3410 IWF-1300 Each %wtion interval C

type suppor*.5, shock absorbers, IWF-2510 hydraulic and mechanical tyre snubbers OZ l

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(1) Reference - IWA-2210.

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