# HazMat Resources, Inc. — Hazardous Materials Safety Interpretation - **operation:** document - **citation:** 08-0125 - **title:** HazMat Resources, Inc. — Hazardous Materials Safety Interpretation - **source type:** guidance - **agency:** Pipeline and Hazardous Materials Safety Administration - **status:** guidance - **official:** true - **published on:** 2008-08-21 - **effective on:** Not available - **summary:** 08-0125 response to HazMat Resources, Inc. concerning 180.407, 180.417. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-08-0125.json - **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-08-0125.md - **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-08-0125 - **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2008/080125.pdf **body:** <<>> U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration 1200 New Jersey Avenue, SE Washington, D.C. 20590 Mr. Daniel G. Shelton Vice President HazMat Resources, Inc. 1 0 1 04 Creedmoor Road Raleigh, NC 276 15 Ref. No. 08-0 125 Dear Mr. Shelton: This is in response to your May 3,2008 letter requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-1 80) applicable to registration and recordkeeping requirements pertaining to Department of Transportation (DOT) specification cargo tanks. Your questions are paraphrased and answered as follows: Q1. Do the registration requirements specified in Part 107, Subpart F of the HMR apply to a company that performs a Wet Fluorescent Magnetic Particle Examination (WFMPE) on MC 330 and MC 33 1 cargo tanks? A l . Yes. In accordance with § 107.502, no person may engage in the manufacture, assembly, certification, inspection or repair of a cargo tank or cargo tank motor vehicle manufactured under the terms of a DOT specification or a special permit unless the person is registered with the Department in accordance with the provisions of Subpart F. A person employed as an inspector or design certifying engineer is considered to be registered if the person's employer is registered. 42. Section V of the ASME code requires a written report when a WFMPE is performed. Is a written report required as part of the pressure test when a WFMPE is performed, or is it allowable to indicate on the pressure test report required by'$ 180.41 7 that a WFMPE was completed? A2. In accordance with Section V of the ASME Code, a written report is required when a WFMPE is performed. In addition, each person performing a test or inspection specified in 5 180.407 must prepare a written report in accordance with the reporting and recordkeeping requirements specified in 5 180.4 17. 43. Section V of the ASME Code requires specific qualification and training requirements and documentation for persons performing a WFMPE. Are these documents required to be maintained and produced in accordance with the requirements of Section V of the ASME Code? <<>> A3. Yes. 44. A4. Q5. A5. What DOT regulations require the maintenance of the additional documentation referenced in Q3? As required in 8 180.407(g)(3), the wet fluorescent magnetic particle inspection must be in accordance with Section V of the ASME Code and CGA Technical Bulletin TB-2. CGA Technical Bulletin TB-2, Section 5.6 states: "Determine the proper documentation has been completed, including marking of the tank. Refer to 49 CFR 180.41 5 and 180.41 7." Is this documentation required by the ASME Code or the HMR? The HMR incorporate Section V of the ASME Code by reference. Thus, when a WFMPE is performed, the HMR require a written report in accordance with Section V. In addition, the requirements of test and marking requirements specified in 8 180.41 5 and the reporting and record retention requirements specified in 8 180.41 7 must also be met. I hope this information is helpful. Sincerely, Susan Gorsky, U Acting Chief, Standards Development Office of Hazardous Materials Standards <<>> / 10104 Creedmoor Road K9isbaii bvl/b~ Raleigh, N.C. 27615 08-0125 May 3,2608 Mr. Edward Mazzullo Office Director, Office of Hazardous Materials Standards U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration East Building, 2nd Floor Mail Stop: E21-3 17 1200 New Jersey Ave., SE Washington, DC 20590 Mr. Mazzullo, Please accept this letter as our request for an interpretation of the registration requirements in 49 CFR 107.502(b) which states in part the following: "(b) No person may engage in the manufacture, assembly, certification, inspection or repair of a cargo tank or cargo tank motor vehicle manufactured under the terms of a DOT specification under subchapter C of this chapter or a special pennit issued under this part unless the person is registered with the Department in accordance with the provisions of this subpart.. . ." I have attached for your reference e-mail correspondence dated October 6,2004 which states that a person performing a welded repair to the cargo tank wall must have a CT number. I am sorry that the question was not in the attached e-mail but the question that prompted this response was this: "If a facility that is registered with the Department does not have an " R stamp, can they sub-contract the welded repair to a company that has an " R stamp but does not have a CT number" I addition, I have attached for your reference interpretation 05-0071 dated April 27,2005 which further supports the Departments' position and creates the appearance that, even though a CT number is only a registration requirement, this interpretation states very clearly that without a CT number you are not AUTHORIZED (emphasis added) to Fax (877) 841 -6023 Phone (423)863-2252 <<>> perform any function where registration is required. So, in effect, a CT number is an authorization to perform any of the functions where registration is required. I have also provided for your reference materials incorporated by reference CGA P-26 (formerly TB- 2 titled Guidelines for Inspection and Repair of MC 330 and MC 33 1 anhydrous ammonia cargo tanks) and Section V article 7 of the ASME code. MC 330 and 331 cargo tank motor vehicles are generally required to undergo a pressure test at certain intervals. The requirements in 49 CFR 1 80a407(g)(3)state as follows: "Each MC 330 and MC 33 1 cargo tank constructed of quenched and tempered steel in accordance with Part UHT in Section VIII of the ASME Code (IBR, see $ 17 1.7 of this subchapter), or constructed of other than quenched and tempered steel but without postweld heat treatment, used for the transportation of anhydrous ammonia or any other hazardous materials that may cause corrosion stress cracking, must be internally inspected by the wet fluorescent magnetic particle method immediately prior to and in conjunction with the performance of the pressure test prescribed in this section. Each MC 330 and MC 33 1 cargo tank constructed of quenched and tempered steel in accordance with Part UHT in Section VIII of the ASME Code and used for the transportation of liquefied petroleum gas must be internally inspected by the wet fluorescent magnetic particle method immediately prior to and in conjunction with the performance of the pressure test prescribed in this section. The wet fluorescent magnetic particle inspection must be in accordance with Section V of the ASME Code and CGA Technical Bulletin TB-2 (IBR, see $171.7 of this subchapter). This paragraph does not apply to cargo tanks that do not have manholes. (See $180.4 17(c) for reporting requirements.) Question 1: Not all MC 330 and MC 33 1 cargo tanks requ.ired a Wet Fluorescent Magnetic Particle Examination (WFMPE) immediately prior to and in conjunction with a pressure test so it appears this WFMPE is an additional test that must be performed. Because this non destructive testing (NDE) is very technical in nature most facilities contract this service out to companies that specialize in NDE. Because this is a separate test, is the person who performs the WFMPE required to be registered with the Department and get a CT number. The WFMPE must be performed in accordance with Section V of the ASME Code and CGA Technical Bulletin TB-2. The following questions refer to these documents: Question 1 : Section V of the ASME Code requires a written report. Is a written report required as part of the pressure test when a WFMPE is performed or can one simply say on the pressure test report required by 180.417 that a WFMPE was completed? Question 2: Section V of the ASME Code requires specific qualification and training requirements and documentation for anyone performing a WFMPE. Are these documents required to be maintained and produced in accordance with the requirements of Section V of the ASME Code? <<>> Question 3: Regarding the qualification and training documents reference in Question 2, what DOT regulations would require me to maintain these additional qualification documents over and above what is currently required in 49 CFR 172.704(d). Question 4: CGA Technical Bulletin TB-2 Section 5.6 states as follows: "Determine the proper documentation has been completed, including marking of the tank. Refer to 49 CFR 180.4 1 5 and 180.4 17. What proper documentation is this bulletin referring to? Is it the documentation required by Section V of the ASME Code, the documentation required in 180.41 7(b), the documentation required in 180.41 7(c), none of the above, all of the above or some combination? Thank you in advance for your reply. Sincerely Daniel G. Shelton Vice President HazMat Resources, Inc. Attachments: Reply from Joe Solomey dated 10/06/2004 Letter to Determan Brownie, Inc. dated 04/27/2005 Ref - 05-0071 CGA Pamphlet 26 Section V of the ASME Code <<>> From: Solomey, Joe Sent: Wednesday, October 06, 2004 12:44 PM To: Shelton, Danny Danny sorry for the delayed reply. Repair is defined in 49 CFR Part 5 180.403 as any welding on a cargo tank wall done to return a cargo tank or a cargo tank motor vehicle to its original design and construction specification, or to a condition prescribed for a later equivalent specification in effect at the time of the repair. The repair function is identified in 49 CFR Part 5 107.502 as a function where registration is required. 49 CFR § 107.502(b) specifically states that no person may engage in the manufacture, assembly, certification, inspection or repair of a cargo tank or cargo tank motor vehicle manufactured under the terms of a DOT specification under subchapter C of this chapter or an exemption issued under this part unless the person is registered with the Department in accordance with the provisions of this subpart. The short version of this is if you are performing a function where registration is required, you need to be registered with the Department. There is no cost to the registration process and places no unnecessary burden on the public. I hope this information is helpful. Joe Joseph Solomey Research and Special Programs Administration Assistant Chief Counsel Hazardous Materials Safety and Emergency Transportation Law Division 400 7th. Street, S.W., Room 8417 Washington, D.C. 20590 (202) 366-0977 (Phone) (202) 366-7041 (Fax) <<>> US. Departmerit of Ttdnsgondlon Plpeline and Hazwdaus MateslaBs S e w Adminis?ration 400 Seventh sveet, S.W. VarsMngton, D.C. 20590 a m 2 7 36 Mr. Dave Anderson Detman Brownie, Inc. 124 1 - 72"d Avenue Northeast Minneapolis, MN 55432 Ref No-: 05-0071 Dear Mr. Andexson, This is in response to your 1,etter dated March 24,2005, requesting clarification of ae. requirements contained in the Hazardous Materials Regulations (HMR 49 CFR Parts 100-185) applicable to manufa~turing apd retesting a DOT .Specification 406 cargo tank motor vehicle (CTMV). Specifically, you ask several questions regarding the testing requirements for a DOT Specificati~n 406 CTMV. In addition, you indicate that the cargo tank does not meet the requirements prescribed in Part 278, Subpart 5 for the specification. Your questions are paraphrased and answered as follows: Q1. May a company that is not registered with the D~partment, in accordance with Part 107, Subpart F, manufactme a DOT Specification 406 CTMVS ' A1 . No. The definition of a ~atldacturer provided in 5 178.320 states that a manufa~turer must register with the Deparhmt in accordance with Part 107, Subpart F of the HMFL h addition, 5 107.502(b) indicates that no pmon may manufacture a DOT specification cargo tank or CTMV unless that person is registered 42. In accordance with tj 180.417(a)(3), may thc owner prepare a manufa~tura's certificate based on specificatiofi markings that were placed on the cargo tank by a person. who manufactured the C W, but was not registered with the Department? A2. No. Section 180.41 7(a)(3) applies to DOT specification CTMVs manuf~cttued before September 1, 1995. However, even if the C W was manufactured prior to Sqtemba 1,1995, you may not prepare a manufacturer's certificate based on informntim supplied by a person who was not authorized to manufacture the CTMV. 43. ' May the owner ~f the CTMV create the documents that are required to be maintaiaed by 4 178.345-15? A3. No. The owner o f the CTMV is not permitted to create thc documents identified in 8 178.345- 15. The docummts must be supplied to the owner by the manufacturer of the CTMV. This hcludss the certification documents that display the registration <<>> number of the manufacturer, the Design. Certifying Engineer, and the Registered Inspmtor. h addition, these dc~cumetlts must iaclude a certificate signed by a responsible official of the manufacturer and a Design Certifying Engineer certifying that the CTMV meas the applicable specification. Because the owner is unable to provide any of the required documents and because the person who manufactured the CTMV was not an authorized manufacturer, the cargo tank must be ctxhl'ied wder the procedures applicable to newly constructed cargo tanks. In the situation described in your letter, you would be converting a non-specification CTMV into a POT specification CTMV, To accomplish this, your company could b e c ~ m the manufacturer of the CTMV and issue the certificates identified in 3 178.345-15. This would entail registration as a cargo tank manufacturer in accordance with Part 107, Subpart F and performance of all, tests and inspecdons under Pm 178, Subpart J, as applicable to the DOT Specification 406 CTMV described in your documented QC program used to obtain your ASME Code "W" stamp. I hope this information is helpful. Please contact us if you require additional assistance. 'Sincerely, Chief, Standards Development M f i c e of Hazarbus Materials. Standards <<>> -. ' CGA P-26--1997 (Formerly TB-2) . . , GUIDELINES FOR INSPECTION AND . REPAIR OF MC-330 AND MC-331 'ANHYDROUS AMMONLA CARGO TANKS , . Fifth Edition, 1997 COMPRESSED GAS ASSOCIATION, INC. 1725 Jeffaraoa Davb Hwy., Suite 1004 Arlington, VA 22202 703-412-0900 <<>> PAGE ii COMPRBSSED a / i , & J . , & J . . INC. COA P-261997 PLEASE NOTE: The information contained in this document was obtained fiom sources believed to be reliable and is based on technical infom.atlon and experience currently available fimm members of the Compressed Gas Association, Inc. and othm. However, the Association or their membsrs, jointly or saverally, make no guaranQe of the re- sults and assume no liability or responsibility in comedon with the information or suggeetions herein con- tained. Moreover, it should not be assumed that every acceptable commodity grade, test or safety procedure or method, precaution, equipment or device is contained within, or that abnormal or unusual circumstances may not warrant or suggest further requirements or addltlonal procedure. This document is ~ubject to periodic review and wers an cautioned to obtain the larest edition. Comments and suggestions are invitad from all usm for consideration by the Assaclation in connection with such review; any such comments or suggestions will be Nly reviewed by the Associatiw after giving the party, upon request, a reasonable opportunity to be heard. (See proposed change sheet on iast printed page of this document.) This document should not be confused with federal, stale, provincial or municipal specifications or regulations, insurance requirements or national safety codes. While the Association rdcommends reference to or use of this document by government agencies and others, this document is purely voluntary and not binding. A c.stdog listing of all publications, audiovisual pmpams, safety and technical bulletins, and safety posten is available at no charge upon =quest fKrm the Compressed Gas Association, Inc. Phone 70341 2-0900, ext. 799. Fax 703-4 12-0 128. E-mail CustomtrService@cganet.com. BOTE: Technical & ~ B S from the Iq~vious editipaate underlined to identifv them forthe reader. 3 FIFTH EDITION: 1997 a .,I. FOURTH EDITION: 1989 ?. :.I . .I - TWRD EDITION! 1900 SECOND EDITION: 1975 O 1997 BY THE COMPRESSED GAS ASSOCIATION INC. ALL RIGHTS RESERVED. 1723 JEFFERSON DAVIS HWY.. SUlTE 1004. ARLINGTON. VA. 22202 <<>> . CGA P-26-1997 . CO-D G A S ~ ~ T I O N J N C . PAGE iii 1 Introduction .......................... :.. ........................................................................................................ 1 2 Inspe~tlon ................... ;.\l..y.l..l ........................................................................................................................ I 3 Repair 1 ............................................................................................................................................................. 4 Preparetlons prior to cargo tank entry. inspection, and =pair 2 ......................................................................... 5 Stqgastad inspection procedure ...................................................................................................................... 3 6 Pereonnel health, safety and tnhing ................................................................................................................ 4 7 Reference ................................................................................................................................................. 4 8 Additionel source of information ... 5........................................................................... ......................... <<>> 1 Inhoducllon 1.1 The US. Department c$ Traruportation (DOT) HazarQus Materials Regplathns in 49 CFR . 4 0 7 U q u i r e that MC-330 and MC-33 1 8 Wucted of quenched and tempered steel or con- A struded of at.m than quenched and tnmpewi i h l at a level that does not appreciably lessen the fluo- rescent hags. Fluarescant ,materials should be mixed according to the recommenddons of the manufacturer md should be agitated frequently during we. Black light output diminishoe with use and should be cheoked poriodicdly with a light meter according to the rscommendatlons of the fluorescent mabrlal'er manufacturer. but without poalweld heat treatment be intenrally inspected by the wet Duororcclt rnlpMic p.lhcle 2 m d o d a c e d n promibed intowals. Cracka and 2.3 The wet fluorescent magnetic particle inspec- tion shall include: other defects found during the inspection shall be repairud in accordance with the nquirements in 49 - all welds in or on the interior surface of the tank, $ CFR Part 180. Subuart E, "Qualification and and the adjacent base plate axtending 2 inches % Maintenance of Cargo Tanks," if a cargo tank is to (5 cm) from either side of such welds; % be returned m traneportatlon servica [I],' 8 - the entire Interior 8urface of tank heads; and 1.2 In order to promote uniformity within tho in- 3 dwtry, the Comprcesed Gas Association has pre- - all interior surfaces at least 2 inches (5 cm) in all pared these guidelines for use by pnonnol havlng directions from exterior welds that are visibly ~ e s p o n s i b i l i t y fn the inspecti611 and repair of them f cargo bnb. discernible on the interior d t h o tank. 5 In addition, the entire intarior surface of the tank \ 2 Inspec tion should be visually inspected, and any areas show- 'r ing evidence of grinding or other repairs or distur- 4 2.1 The wet fluarescant magnetic particle method bmcss of the plate surface should be inspected by ? shall be used, and the test procedure shall be In the wet flucrescent miignetic particle method. If accordance with the applicable portions of Section any cracks are found, the entire interior surface I V of the ASME Code [2]. The alternating cunent shall also be inspected. yoke mothod shall be used. i 3 Rsprlr ! 2.2 The surfaces to be inspected shall be cleaned to ! remove oil, loose scale, and rust. All of these mate- : rials shall be removed from surfaces with BUS- oient cam to clean crevices end corners so that416 : test solution will flow h l y . Failure to do this will I result in erroneous indications w the masking of indications. Care should be exercised to magnetize each area in directions that would cross any crack regardless of the crack's orientation. Yokes should be positioned to effectively overlap magnetimd amas. The speed of inspecdon should be slow enough to allow particle buildup at cracks. The continuous method of inspection should be wed eo t . currant and tost solution ers flowing while the inspection is being made with the black light. Visible light should be.eliminated entirely or kept References in this document are shown by bmckacd numbers and are listed iu order of eppcarance in section 7, Refennccs.3.1 All craaks and otha defects, areopt porosity and dag incluelons in the weld deposit that are mptable under the ASME Code, Section VIII Division I shdl be m o v e d or repaired [3], The rsmoval and repair procedures employed shall comply with those contained in the latsst edition and addenda of the National Board Inspection Code [4]. Where specific procedures are not given, it is intended that, subject to the approval of the inspector, dl repairs shall conform Insofar as pose sible to the ASME Coda most applicable to the best perfarmance of the work planned [S]. The construction standard selected shall be the one considered by ths inspector as the most compatible with the nahw of the repalr and the conditions of origind construction. Before procssdlng with any welded repairs, the repair facility should have a copy of the Manufacturer's Data Report, Form U1 or UIA. <<>> PAGE 2, COMPRESSED GAS ASSOCIATION. INC. CGA P-26-1997 32 Some minor cracks and other defects may be removed by grinding. Iu no case shall grinding be done that would reduce the wall thickness below that shown on the data plate minus 0.010 inch (0.254 mm). Oiindlng pressure should be light, and the material should not be overheated, Heavy pinding preesure will produce mechanical work hardening, and werheating will induce hard spots and high residual stresses. Material can be pre- vented. fiam getting too hot by using a coolant or intermittently grinding and cooling. All ground areas must be properly contoured and feathered to eliminate stress raisers such m a sharp dlscontinu- ity h the surface. 3.3 Repairs by welding on the pressure vessel shall only be performed by a repair organization holding a valid Nadonal Board Certificate authorizing the use of the 'R" stamp and rtglstered in accordance with Title 49 CFR 107, Subpart F [I]. A u t h o ~ o n and acceptan* of any repain mlds shall be in accordance with the requirements of Paranra~w-IOOQ of the National Board Inspec- tion Code (41. 3.4 Welding on the pressute vessel, thermal heat treatment, materids ernployod for repdrs, re- placement of pressure parts, nondestructive exmi- nation, and pressure tests as required shall, all. con- fonn to the requirements of Prnmanhs RC-100Q BPQRC-2004 of the National Board Inspecdon Code [4]. 36 Defect rsmoval, replacement of major pressure pans, and the repair methods employed shall'meet . the applicable roquimsnts of Paraprmh RD- 100Q of the Natiod B o d Inspection Code [4]. 3.6 Cracks that ari not removable in accordance with the ASME Code by surface grinding shall be removed by acceptable means until no avther cracks are revealed by wet fluo~scent magnetic particle inspection, and the m a filled by waldiag Ln an approved manner. Preheat the m a td be- twmn 100 "F to 200 OF (37.8 'C to 933 O C ) to remove moisture and prevent too rapid cooling, 'which occurs on small welds. The straight- stringer-bead technique is suggatod for weld ' metal deposition. This is considered a minor re- Pair. 3.7 In some was, cracks may be so numerous that repairing oaoh crack would not be practical. In this case, a section may be removed and a new section installed &P the aame vrocedums a W n tecMoua@red by the A- a 4 9 CFR 180. S- E 117. 3.8 AAer welding, the weld reinfmemeni should be ground k accordnnce with the ASME Codu, and any undercuts .found should either be h a t h ground or weld-repai,md and ground. Precautiops should be taken to avoid overheating a d creating coarse eurfkces from grinding. Groove weld m- pairs Bhdl be radiographed whemer practical. 3.9 No post-weld heat troatmont after minor rep& is required. Post-weld heat batment Is required after d o r repairs. . . 3,10 Aftar welding npalrs, the area shell'.be *in- ~pected by the wet fluorescent magnetic particle method. The tank shall ale0 be hydrcistatically retested to a preesm a! least twice the tank design pressure for quonchsd. and tempered swls or I 1R times the tank design pressuro for other than quenched and tempered steels. The repalred are+ including tho URador pordon of tha weld. if it penetrates the entire thickness of tho nymial,.shall then be rehspected by tho wet fluorescent mag. netic, particle method. 3.11 Documontatlon and niarkii of any prassura vessel repair made shall aatisfy the applicable re;; quiromenb of @riimnuhs RC-2070 and RC-206a of the National Board Inspection Code ind re- quirements of the DOT [4]. See 5.6. 4 Preparrfionr pdor b esrgd bnk entry, in- rpsrtlon, ind repalr The following suggestions are general in nature and are not Intended to be all~inclusive or fully .descriptive of a plan to provide for every conse- qwxe that may occur. Rspalt shop owners or managers are advised to devdop specific proce- dures auitad to their panlcular workplace require- ments for the prorcftj~n of .employees, the general public, property, bnd ~ surrounding environment from liquid or gaseous hazardous materials, which may be corrosive, explosive, or otherwise harmful. 4.1 Repair shop ownen or ma&&ers should com- ply with the requirements promulga!ed by the <<>> CGA P-261997 COMPRESSED Gd isB- INC. PAGE 3 DOT in 49 CFR 177.854(g), "Repairs and Mainte- nance of Vehicles Containing Certain Hazardous Materials;" 49 CFR 180.413, 'Repalrl Modifica- tion, Stretchiig, or ~e-bakr$lk of Cargo Tanks;" and 29 CFR 19 10.146, "Permit-required Confined Spaces" [I, 1, 61. State and local regulations may also apply and should be obsenred accordingly, At a minimum, no work shoul,d be performed on a cargo tank containing a hazardous material inslde a shop building wlass: - the cargo tank and .auxiliary piping have been datermined to be fieo of leakage; - means are provided to immediately remove the cargo tank fmm the building, if necessary, in an emergency; and - d l sources of spark, flame, or glowing heat witbin the building (including any heating sys- tem drawing air there) are extinguished, .made inopkable, or rendered explosion-proof by. suit- able means if the h d o u s materlal is flammp- bls or can be ignited. 4.i .Identify any residual. material in tank Review the Materid Safety Data Sheet (MSDS) to deter- mina the chemical and physical properties, meth- ods of haadling, health hazards, personal protec- tive requhments, and environmental protective requirements. 4.3 Transfer residual material from the tank and awillary piping to a suitable and approved storage moalner or to a properly en'gIneered disppsd ayatem that is designed and operated In a manner consistent with all applicable requirements of lo- cal, emto, and federal environmental and safkfy .regulatory agencies; 4.4 Remove residual impor fiom the tank 8nd aw- #iay piping by suitable means, which lhay include ventilating with air, hert gas, or displacing with water. The method selected shall be mmpetible with the reslduel vapor being m o v e d and shall not msult in.off-slte contamination or cause condi- tions that can lead to combustion, respiratory ef- fects, or other harmful oonsequemss, AS Rovlde an d e q w supply of h tank interior. h air to ths 4.6 Determine that a safe atmosphere exists within the tank before allowing personnel to enter. Oxy- gen, combustible gas, md alr contaminant level readings shall be taken with suitable monitoring instruments properly operated and maintained in accordance with fhe manufircturer's itlstructions. In general, oxygen antent should be greater than 19.5% and not more than 20.9%. Combustible gas levels should be less than 10% of the Lower EK- plosive Limit GEL) for tho material involved, and air contaminant levels ahould be held within Ilmits that will permit compliance .with tho standards set by the Occupational Safety and Health Admini- stration (OSHA) in 29 CFR 1910.1000, which governs employee exposure in the workplace [6]. Guidelines for threshold limit values';for chemical sub-ces in t2le work environment are given in the American Confe~ence of aovemmeMal Indus- trial Hygienist's publication, TLVs: Threshold Limit Valuesjor Chemical Stlbstmrces in the Work Environment [7]. State and local regulations may impose more stringent requinmonts than those Indicatad and should be reviewed. 5 Suggested Inspection procedure For the added guidance of those not experienced in the inspection of cargo lanks, the following steps are suggested: 5.1 Remove the manhole cover(s), valves, and fit- tings as required. 5.2 Check that the interior surface is clean and free from all, loose tust or scale, and residue at h e bottom. Clean ns rsquind wlrh the following s u p gestiom: - oil: Steam or solvent cIcan. (Avoid flammable solvenrs.); '- rust and loose scele: Wire brush or sandblast; and - residue: Scoop out and vacuum; 63 Visdly inspea che interior with a floodlight, : marking any a m showing evidence of weld re- pair of the parent mdal, manufacturing cllps, grindin& or other disturbance of the plate surface. <<>> PAOE4. .CO~~E&SSED GAS A s 9 0 ~ INC. CQA P-26--1997 . W, 5.4 Mark interior areas corresponding to external stmaural pad attachmex&, which must be in- spected in accordance with 2.3. or permitting welding, grlndi, cutting, clean- ing, or other activities. Pkriodic d r quality de- terminatlous during a work cycle may be appro- priate; 3.3 Inspect marked areas, interior of heads, and anas up to 2 Jnches (5 cm) from all interior welds using the wet fluorescent magnetic particle method. - maintaining continuous and adequate fiesh air flow into the lank interlor for employee safety during the work cycle; . 5.5.1 Start on the head opposite the manhole; work toward the manhole. 5.53 Work from the bottom up. 5.5.3 Be equippod with a grinder to evaluate the -requiring employees working In a confined spacs to use the "hddy" system. Provisions should be made to maintain constant visual and audlble communication betweon the employees who should be trained in rescue and first hid procedures; findings. - avoiding excessive contact wlth cleaning and inspection fluids, und using protective creams; S.S,4 Proceed with an inspection of the entire in: terior surface if craoks or defects requiring such inspection are discovered. 2 5.5.5 Mark and record the repaired areas. - providing appropriate protective clothing for employee uae euch as chemical-resistant .cloth- ing, boots, gloves, goggles, and face shields; S.6 Determine that the proper documentation hss - fiunbhing approved respiratory protective @ been complttsd, inoluding marking of the tank. equipment for employee use as needed together R Refer to 49 CFR m415 and 180.417 111. wlth safety belts, safety lines, and ladders; 6 Pemonnel health, rafety, m d trniniig - grounding the tank, and using only lighting and electrical tquipment that is either intrineically safe or grounded; and The health and safety hazands et a repair ahop will' ba speciflc to that particular facility. Thus, a corn- plete list of precautions and recommendations ad: dressing all possible hazards is beyond the scope 'of this publication. Ri6k~ associated with shop op- eration om be minimizad through the implem?nta- don of appropriate engineering, administrative, &rid personal protective controls, These include the proper selection and application of facility de~ign, shop equipment, personal protective quipment and clothing, snfety preoautiom, and thorough ern- ployee training. Smndards and guidelines for minimizing hazards to personnel in the, workplace may be found in the OSHA Standards, 29 CFR 1910 [6]. Repalr shop owners or managers should and comply with these regulations. - providing employee training on a periodic basis in areas such es, but not limited to, firat aid eafe job procedures, proper use of mspir~tory pmtec- tive equipment, mergmcy contingency plans, , . and phydcal and ohemieal W d s msociated 'with the work, kquirsrnents, ' 7 References [l] Code ofFederal Regulatiom, Title 49 CFR : Parts 100-180, Superintendent of Documente, U.S. Governem Printing Office, Washington, D.C. 20402. Some examples of safety procedures and programs to be implemented and vfgarously enforced we: , [2] ASh4E Boiler and Pre~sure Vessel Code, Sec- tion V-Nondeshrclivq &aminatton, American So- ciety of Me~haniod h&neea, 345 East 47th St,, New York, NY 1001'7. - determining that the Interior tank &nosphere is such as combustible gas, oxygen, and air con- [3] ASMIG Boller and ~ r e s w r e Ve68el Code, SBC- lion ~111 (Dtvlston 1) .- Unflred Pwsure Vessels, C <<>> CGA P-261997 COMPRESSED GAS ASSOCIATION. INC. American Sooiety of Mechanioal Engineers, 345 East 47th St., New York, NY 10017. 14) ~ a t l ~ n a l ~ o m d ~ns~e&pwc'ode - I995 MI- tton: NB-23, National Board of Boiler and Res- sure Vessel Inspectors, 1055 Crupper Avenue, Columbus. Ohio, 43229. [5 J ASME Boller and Pressure Vessel Code, Sec- tion IX- Welding Qualipcatrons, American Soci- cty of Mechanical Enginem, 345 East 47th St., New York, NY 10017. @ [[a] Coda ofFederal Ragulatfm~, Title 29 Pane W . 1900 - 1910, Superintendent of Documerits, U.S. $4 6% S 4 R Q a 3 'f 4 3 a B L t t t t I 1 I : ? I I 1 I Government Printing Oflce, Washington, D.C. 20402. Substances h the Work Environment, 1997, American Conference of Governmentel Industrial Hygienists 1330 Kemper .Meadow Dr., Cincinnati, OH 45240. 8 AddltIonal source of informstlon Pocket Guide to Chemical Hazards, NIOSWOSHA, DHEW (NIOSH) Publication No. 85-1 14, Superintendent of Documents, U.S. Qov- emment Printing Office, Washington, D.C. 20402, <<>> ARTICLE 7 Scope .................................................................................................................................... General ................................................................................................................................. Equipment ........................................................................................................................... Examination Medium ........................................................................................................ Requirements ...................................................................................................................... Surface Conditioning ......................................................................................................... Procedure/Technique ........................................................................................................ Method of Examination .................................................................................................... Techniques and Materials ................................................................................................. Magnetizing Field Adequacy and Direction ................................................................. Rectified Current ................................................................................................................ Demagnetization ................................................................................................................ Postexamination Cleaning ................................................................................................ Calibration of Equipment ................................................................................................. Frequency of Calibration .................................................................................................. Lifting Power of Yokes ..................................................................................................... Gaussmeters ........................................................................................................................ Examination ........................................................................................................................ Direction of Magnetization .............................................................................................. Examination Coverage ...................................................................................................... Prod Technique .................................................................................................................. Longitudinal Magnetization Technique ......................................................................... Circular Magnetization Technique ................................................................................. Yoke Technique ................................................................................................................. Multidirectional Magnetization Technique ................................................................... Interpretation ..................................................................................................................... Evaluation ............................................................................................................................ Records ................................................................................................................................ Multidirectional Magnetization Technique Sketch ...................................................... Figures T.753.1.1 T.753.1.2 T.775.2 Pie-Shaped Magnetic Particle Field Indicator ............................................................... 150 Artificial Flaw Shims ........................................................................................................ 151 Single-Turn and Two-Turn Central Conductor Technique ........................................ 154 Mandatory Appendices Appendix 1 Magnetic Particle Examination on Coated Ferritic Materials Using the AC Yoke Technique ..................................................................................................... 155 1-710 Scope ...................................................................................................................................... 155 1-720 General .................................................................................................................................. 155 1-72 1 Personnel Qualification ...................................................................................................... 155 1-730 Equipment ............................................................................................................................ 155 1-750 ProcedureITechnique ......................................................................................................... 155 Copyright ASME International Provided by IHS under license with ASME No reprodudion or nelworhng permined without license from IHS Licensee=Dept of Transparlat1an15908201001 Not far Resale . 0Z0612006 14:14:05 MST <<>> 1-751 Coating Thickness Measurement ................................................................................. 155 1-752 Procedure Demonstration .................................................................................................. 156 1-753 Procedure Qualification ..................................................................................................... 156 1-770 Examination .................................. - **truncated:** true - **body characters:** 79003