health, safety & environmental manual … tank builders scaffold...ordinances concerning tank...

HEALTH, SAFETY & ENVIRONMENTAL MANUALPrinted4/3/2007: Brown-Minneapolis Tank S401 Tank Builder's Scaffold Guidelines

MDemoss

Text Box

Notes: 1) See S402 for Spanish language version. 2) Used with permission of STI/SPFA.

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PURPOSE

DEFINITIONS 1-3

ERECnON PROCEDURE 3-8

Al TERING/DISMANTLING PROCEDURE 6

GENERAL RULES FOR SCAFFOLD USE 8-10

TRAINING 11-12

RETRAINING 12

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EMERGENCY INFORMATION

Name

Home Address

Home Phone

Business

Business Address

Business Phone

Fax

In Cae of Emergency. c8I

Blood Type ,,; !i' "'I ..,-"'!

Allergies/lHnesses

Doctor

Insurance Co. Name

Group Number

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NOTICE NOTES

The foHowing materials have been developed bySTI/SPFA to generally ilustrate industry practice. In developingthese Guidelines. STUSPFA makes no judgment as to wtlethersuch Industry practice reflects reasonable care. These materialsmerely set forth a general method by which scaffolding for tanksand vessels may be erected, used. maintained. and inspected,and by which peI$OOnel may gain a preliminary background in thehazards of Tank Builders Scaffold. These Guidelines are not inany manner to be construed as superseding or supplementing theOSHA Guidelines promulgated under 29 CFR 1926.450 through

1926.454 and as listed in Appendix A, or any other OSHA

Guidelines or applicable federal, state or municipal laws,regulations and ordinances. Each employer has the responsibilityto fdlow. and ensure that its employees comply with, the OSHA

Guidelines and all other applicable laws. regulations andordinances concerning Tank Builders Scaffold and the erection.use, maintenance. inspection and employee training and safety inregard thereto. These Guidelines shall in no manner be construedas imposing any liability upon STUSPFA for any bodily injuries or

damage to peI$OOaI property resulting from the implementation ofany d the Information contained within these Guidelines. Further.STVSFPA accepts no liability for the use. misuse. interpretation. ormlslntefpl'etatlon of any of the information contained herein by anypeI$OO or entity. STVSPFA DISCLAIMS ALL WARRANTIES.

EXPRESS OR IMPLIED. INCLUDING AlL WARRANTIES OF

MERCHANTABILITY OR FITNESS FOR A PARTICULARPURPOSE.

By taking possession of these Guidelines. the holder

hereof undef$tands that IN NO EVENT. WHETHER AS A RESULT

OF A BREACH OF WARRANTY, BREACH OF CONTRACT,

NEGLIGENCE OR OTHERWISE. SHAlL STVSFPA BE LIABlE

FOR DAMAGES RESULTING FROM THE REFERENCE TO OR

RELIANCE ON THESE MATERIALS. INCLUDING ANY ACTUALOR ECONOMIC DAMAGES, LOSS OF PROFITS OR

INCIDENTAl OR CONSEQUENTIAL DAMAGES. EVEN IF

STVSFPA IS ADVISED OF THE POSSIBILITY OF SUCHDAMAGE. These materials may be revised or witMrawn at anytime without prkx" notice by STUSPFA.

December 2005

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TANK BUILDERS SCAFFOLD GUIDELINESNOTES

PURPOSE:

Due to the unique nature of tank and vessel ~,

$pedal procedures, induding scaffolding for tank aoo vesselerection and maintenance. have been developed. Forexample, as opposed to more conventiooal ~s. tankscaffolds must have highly portable Iow-density ocaJpency bywor1ters. The following guideline has been developed bymembers of STI/SPFA to rafted ~stry practice. This

guideline provides a method to establish minimum safe

erectM>n, use, maintenance. dismantling. inspedion andtraining of employees in the hazards of Tank Buikters Scaffold.Each employer has the responsibility to follow the OSHAgukjelines under 29 CFR. 1926.450 through 1926.454 81d aslisted in Appendx A, in establishing the proper use of scaffcldsand elevated wor1t locations for their employees.

DEFINITIONS:

Tank Bullde,. Scaffold: (1926.45O(b)) means a ~scaffold coosisting of a platform restk1g on brackets that areeither directly attached to a **tank or attached to devices (e.g.,dips) that are a~ to 8Ud\ a **...

r' A "tank" is not necessarily cylindrical. Tank Build8f8~ is used on 8tNctures that can be cylmrical,

rectangular. conical. spherical, spheroidal, or elliptical. Also,"tanks" are coostructed of material other than metal; e.g.,~. wood, etc. Some tanks have YefticaI waIs that areso thin that a bracket oould not be welded to It; rather. thebracket would have to be bolted. The bracket is often inserted

into a device, which is ~ 10 the steel plate.)

Competent Person: (1926.45O(b)) means a person who iscapable of identifying existing and predidable hazads it thesurroundings or working conditions wtlich are unsanitary.hazardous. cx dangerous to employees. aoo who hasauthorization to take prompt a)rr8dive measures to elimW\atethem.

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(a) Toprail (Handline): means a taut Me. syntheticrope or equivalent installed on posts at a height between 38aoo 45 ind1es above the platform surface. Ead\ topraiI shall becapable of withstaooing without ftMfure. a force applied in anydownward or horizontal direction. at any point along its topedge of at least 200 pounds.

Qu.11fted Person: (1926.450 (b» means a person who bypossession of a recognized degree. certificate, or professionalstand~. or who by extensive knowledge. training. andexperience. has successfuly demonstrated hi&n1er ability tosolve or resolve problems related to the subject matter, the~. ~ the project.

(b) Mldrail (Midline): means a taut Me, synthetic ropeor equivalent member installed on POSIs at a heightapproximately midway between the topraiI 8nd the scaffoldplatform surface. Each mid rail must be capable of supportingwithout failure a minimum of a 150-pound force In a downwardor horizontal dWection at any point along its length.

SC8ftoId Clip: means a specially fabricated device welded tXmechanically fastened to the tank for attaching the scaffoldbracket. Clips shall be designed by a qualified person tosupport four times the intended load (4:1), and be fabricatedaccording to that design.

Sc8tfoId 8r8cket: means a devk:e that is used to support ascaffold platform. Brackets shall be designed by a qualifiedperson to SUPJXWt four times \he k1tended !oed (4:1) and befabricated acoording to that design.

(c) Guardrail Posts: nleMS a suppcwt for the toprailand midrail made of 2 inch by 4 inch lumbet'; or equivalent 1-1/4 inch by 1/8 inch structural angle Won; (X' 1 inch by .070 inchwall steel tubing; or 1.990 inch by .058 ~ wall aluminumtubing.Scaffold PI8trOlm: means a work sutface elevated above

lower levels. Platfonns may be constructed using individualwood planks. fatxicated pianks. ~ decks or fabricatedplatfonns. The man~ reoommended loading forfabricated items shall be used. Plattonns shell be a minimumof 18. in width. For spans greater than 6 feet. the platform shallbe equivalent to tOM) (2) 2 by 12 k1d\ CM" ttvee (3) 2 by 10 ~rough full dimensionellumber made of Douglas Fir or SouthernYellow Pine of select structural grade. Douglas Fi' planks shallhave a fiber stress of at least 1900 ~ per squ8'8 ~.and a modulus of elasticity of 1,900,000 pounds per squareindt. while Yellow PIne pianks shall have a br stress of at

least 2500 pounds per squ.-. ~ and a ~hJS of eI8sticJ.y

of at least 2,000.000 pounds per sqU81'8 W\Ch.

(d) S8fety1ine (third line): means a taut wire. syntheticrope or equivalent, installed on the scaffold bracket at thescaffold platform level, between the inner most edge of thescaffold platform and the structure, wt)8re the space betweenthe scaffold platform and the structure exceeds 12 inches. Inthe event the open space on either side of lie safetyIineexceeds 12 N1Ches, a second safetytine ~teIy placed,shall be installed in order to reduce the open space to lessthan 12~.

ERECTION PROCEDURE

Sca&lds shall be erected. moved. dismantled, or 8ter8d oriyunder the supervision and direction of a competent person.Only experienced and trained employees seleded for sud1wort< by the competent person sh81 perform sudI adiYiIies.

Guard,..1 System: means a vertical barrier (X)I1Sisting of, butnot limited to toprails, midrails, safetytlnes and posts erected toprevent employees from falling off a sca«ald p.tform orwalkway to lower levels. Guardrai (XX11)OnefU shall have asmooth surface to prevent Injury to employees #ran punctures

or 18cefations and to prevent snagging of ~. A typical

guardrail system is composed of:

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The scaffOd ~ location sh8I not exceed 1 0 feet 6Inches for scaffold bt'8cket location. The clip locationshould be ftee of rust. mAlscale. non-weIdabIe paint or

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other surface irregularities that may hinder the attachment

~ the dip to the tank surface.safetyilne shall be appropriately placed to reduce theopen space to less than 12 inches.

The guardraM posts shan be in8C81led on the scaffddbrackets. Posts shall be checked ffx ~nesa andstructural integrity.

The scaffold clip should be tack welded or med1an1cal1yfastened to the tank surface and visuaUy checked forlevelness. Unlevel scaffold clips may cause undue stressto be Paced on the scaffold bracket.

9.2.

10. T~il and midraM aha" be insta"ed on the ~ posts.he topraM shall be mtalled between 38 and 45 Inchesabove the ptatfonn surface. The midrail shall be mtalledapproximately midway between the toprail and theplatform surface.

If h scaffold clip is welded to h tank, a weld proceduredeveklPed by a qualified person shall be used. Onlycer1ified welders shall weld scaffold clips to tanks.

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Weld slag shall be removed from the weld before weldi1spection.

4,

11. The capadty of tank builder's scaffold as erectedacCOIding to "is guideline is bee persons on a platformsupported between 5C8Wdd brackets at a maximum~ of 10 feet 6 ird18s. Tank builder's scaffold Is notdesigned to support heavy tools and ~.

5. Welds shall be inspected for proper size and quality8Ca)rding to the weld procedure. and initialed beforeattaching the scaffold bracket to the scaffold clip.

5caft~ brackets shall be inspected for damage beforepIack1g into scaffold clip. After placing ~ bracketinto scaffold clip the bracket aha. be visually inspected forlevelness.

12. In addition to we8q hardhats each employee WOfkingon tank builders ~ 8h8U be protected from fallinghand toos. debris end other sm81 objects ttvough theuse of tool ~ secured to the scaffold platform to

prevent \heir upset ~ disbdgment.

6.

Scaffold platforms shaH be placed onto ~ ~brackets. When sca«ad pianka are used ~y shall besupported at each ~ bracket location with amk\knum of 6 ~s and a maximum of 18 inches ofoverhang. Planj(s should be 0Yef18Pped in ~ sanediredk)n to help secure ~ p.,ka. In windy conditions~ planks should be secured to ~ scaWold br8ckets.

,.13. For sca«oIds 10 feet or higher above a lower level. aoo

wh8I8 there is a ~ of tools. equipment or materialsfaRing from the scaftokj onto employees below 0 a barriershaM be ered8d « toe boards ntalled on the platform.

14. When used, baniefS shaft be e8tab1ished betow !hescaftoId .ea with yellow and black C8utM>n ~ ortagging, indicating ~ is being pefformed overhead.8 A taut wire, synthetic rope or equivalent. supported on the

scaffold bradtets. shall be ntalled at the scaft'oldplatform level between the innermost edge of the scaffoldplatform and the aNVed plate structtKe of the taM shell toserve as a safetyline in lieu of an iMer guardrail system.~ the space between the scaft'old pIatfom1 and thetank exceeds 12 inches. In the event the space on eitherside of the safetyline exceeds 12 inches. a second

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15. Tank BuHders Scaffold under oonstrudkJn ~ betagged with a Red tag indicating the scaffoki Is not~ed. This tag should be removed and replaced witha GINn tag when the scaffold has been completed.inspected. and is ready for use.

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16. Scaffolds whk:h have been completed but are undergoingalteration or modification should be tagged with a Yellowtag indicating the scaffold is no longer complete. andwork on the scaffold must be performed with caution.When alterations or modifications are completed thescaffold will be re-inspected and the scaffold should bere-tagged with a Green tag.

hazards, such as high-oltage power lines. debris,unguarded openings, hazardous conditions created byothers on the site and adequacy of structure to supportthe scaffold.

All scaffold components shall be inspected prior toerection. Inadequate or deficient parts shall be tagged forrepair or removed from site. Each scaffold clip or bracketshall be capable of supporting. without failure. its ownweight and at least four (4) times the maximum intendedload applied to it.

2.

17. Inspection and tagging will be the responsibility of thecompetent person or their designee.

18. The employer shall have a competent person determinethe feasibility and safety of providing fall protection foremployees erecting or dismantling supported scaffoldsEmployers are required to provide fall protection foremployees erecting or dismantling supported scaffoldswhere the installation and use of such protection isfeasible and does not create a greater hazard.

All scaffold planks must be inspected before initial use ateach jobslte. For full dimensional lumber. it is advisable touse corrugated steel end fasteners or bolt the ends of

each plank to prevent splitting.

3.

Manufactured platfOlmS must be erected in acCOfdancewith design and/or manufacturer's recommendatioos.

4.

ALTERING I DISMANTLING PROCEDURE:All scaffolds are to be erected by trained employeesunder the supervision and direction of a competent

person.

5.The competent person shall determine the feasibility anduse of personal fall protection for the employees alteringand! or dismantling scaffold.

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All scaffold assemblies are to be inspected under thesupelVision and direction of a competent person or adesignee after erection. each shift and after anymaintenance or repair.

6.When used the competent person or a designee shall tagthe scaffold with the appropriate tag indicating alterationor dismantling.

2.

The competent person or a designee shall insure thehandline is secure for other ~Ioyees who continue towork on the undisturbed portions of the scaffold.

3. Inspection shall include but is not limited to:

e.b.c.d.

When scaffold components are moved or lowered toanother level they shall not be dropped or thrown fromelevated worX locations.

4.

The con-ect scaffold assembly.Guard rails in place and adequate.Scaffold platform is correctly planked and secured.Scaffold barricades erected under scaffold or toe

boards mstalled.Adequate scaffold access has been provided.Scaffold tags (Green. yellow. or red) are in place.Tools and equipment are stored safely on scaffoldand scaffold is not overloaded.

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e.f.

g.

GENERAL RULES FOR SCAFFOLD USE:

The competent person is to SUfV8y the jobsite for

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Only certified welders shall attad1 welded SC8ti:JId

clips.15,Erected scaffolds sh<XIld be continually inspeded by

users to be sure that they are maintained in a safe~ . Report any oosafe conditions to yoursupervisor or the competent person.

7.

Planks, decking, etc., on the scaffold pIatfom1 shallbe kept together and as close to the guardrail posts88 possible. MaUnum aIkJWabIe space between

planks is 1",

16.

Employees should not ~ on any scaffold If theirphysical condition is such that they feel dizzy orunsteady in any way . ~ s ) stwxJkj report

prescription medication use to their supervisor.

8.

For scaffolds 10 feet Of higher above 8 k)wer leveland where there is a danger of tools, equipment or

materials faling from the scaffokj ooto ~

below. a barrier shall be erected or toeboaIds

M'lstalled on the scaffold platform.

17.

Scaffold platforms more than 24. above or bek)w thepoint of access shalt be provkied with a safe meansof aa:ess/egr88a. Std1 as stan. ladders or ramps.

9.

Scaffolds must be kept free from ice. snow. mud. oil,and other materials. which Cre8te a hazard.

T ~ or permanent ladders used for scaffoldaccess must have a rest piatfom1 at 35-fool~ vertical intervals or ladder clmbing fallprotection shall be used.

18.10.

Excessive storage and accumulation of tools,materials, and equipment must not be permitted.Storage of smaI tools, loose materials, etc. must bekept in approved secured tool conta~. Goodhousekeeping must be maintained on scaffolds at alltimes.

19.

All ladders used on scaWoids must have feet or slipresistant end point Where a ladder is subject to

d~t it shall be lied off.

11.

Each empoyee on a scaffold subject to a fall of 6'-0"or more shall be proteded by a guardrail system or aper8OI'I8I ~ arrest system.

12.Maximum alkM8~ specing of IcaWdd brackets 8Idposts Is 10'-6-.

20

Not more than three people shall occupy a 10'-6"span of a scaffold platform at any time.

21A tag system should be used to micate that the

scaffold ia or Is not safe for use. The tag(s) should

be located at all JX*1t8 d ~ to the scaffold . A

green tag should be used to signify that the scaffoldIs ~ and safe to use. A yellow tag shouldIrdcate the scaffold can only be used with apersonal fell arrest system as specified on the lag. Aredtagshouldm~thescaffoldisnotcompleted

end C81 only be aa:essed by scaffold erectors.

13.

A !aut wife or synthetic rope SUPPOl18d on thescaffold brackets shall be installed at the scaffoldplatform level between the scaffold platform and thecurved surface of the tank/stNdure to Sefve as asafety line (third handline) in lieu of an innerguardrail assembly whefe the space between thesca«Old platform and the tank/structure exceeds 1T(30.48 an). In the event the open space on eitherside of the safety line exceeds 1 T. a ~ wire orsynthetic rope, or guardrail, shall be W\stalled in

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22.

Sca«oId bt'adIets wHI be plumb and fixed to the tankor strudure by an appropriate scaffold clip.

14.

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order to reduce that open space to less than 12inches. If the tank/stnICtIKe does not extend 38"(96.52 an) above the sca~ platform. a guardrailshall also be erected.

23. The minimum scaffold platform (see de~) shanbe 1 S- wide. Where wood planks .. used for spansgreater than 6'..0-. the platform shall consist of ~(2), 2" thk:k by 12" wide (Caljfomja - three (3), 2"thick by 10" wide) scaffold planks of rough fulldimensioned lumber of Douglas Fir or SouthernYellow Pine of Setect Structural Grade. Wh8f'8 othermaterials are used for the platform, they shall haveequivalent strength.

24. Scaffold planks sha" extethe scaffold brackets with18- unless the planks arethe brackets.

25. A guard rail system will be installed on the outside ofthe scaffold and at the ends of the scaffddconsisting of guardrail posts. a topraiI. and~.

26 Never leave openings In scaffold platforms ortopraMs unprotected.

27. Do not lean against topralls Of midfails

28. Do not hang weld cables, hoses, electrical cables. ormaterials or equipment ~ toprails or mkiraiIs. they~ be hung ~ sca~ guardraW posts.

29. Personal fall arrest systems must be used if you getyour head and shoukMrs outskje the ~

system. below the scaffold platform. or your buttocksabove the toprail.

30. Never jump on a scaWOld CM' jump from a sca~ tothe ground.

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Ind a minimum of 6" overa maximum extension of

securedonOOthendsk)


3. ~ etection. maintenance and dismantlingprocedures.

PLEASE COMPLETE AND RETURNTO YOUR SUPERVISOR

4. Welding and weld i1spedion procedures.

This is to acknowledge that I have received my copyof the "Tank Builders Scaffold Guidelines", and an CMientationon its content. I ~ 8nd ... that my faikn to

comply with the rules and regul8~ns in this booklet and/or any~ scaffokt safety Mea 8nd regulations provided to me

are grounds for my immediate dismissel.

5. Inspection of component parts

8. Fall hazards. guardrail systems and personal fall.,.t

systems.

7, Falling object hazants and proper barriers aroundscaffolds.

Print Name

8. Electrical hazards induding welding hazards.

8. s~ capacities

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Signed

10. TaggM1g and Inspection of scaffold by competent

~s). Date

11. Storing equipment and materials on sca~s This is to acknowledge that I deivered a copy of the"Tank Buikiers Scaffold Guideli1es" to the P8f&on who signedthe aboYe receipt n that I gave an ~ on the oontentof this booklet and other scaffold rules and regulations of the

~.

All trainina should be doculn8\ted.

RETRAINING:

Changes ., the sca«oId, fall protection requirements. fallingobjed protection or other equ~t changes about which theaWected empkJyees have not been trained win requireretraining.

-Print Name

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Whet'8 an efnpk))'ee shows lack of understandi'lg or skHIs to~ on. erect. aher or dismanUe the scaffold that employeeMI be retrained. Dale ~No

Aft reninina sf)QuId be documented.

DECEMBER 2005 REVISION

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