Process of certification against the requirements of … Presentations/2011... · Process of certification against the requirements of ... Process of certification against the requirements

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Process of certification

against the

requirements of

Annex C of ARP 0108

Roelof Viljoen

Mining And Surface Certification CC

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Scope of presentation:

Process of certification against the

requirements of

Annex C of ARP 0108

• Requirements,

• Complications and frequently asked questions /

misconceptions / challenges.

• In practice

ARP 0108

• Recommended practice / Aanbevole praktyk = ARP

BUT Compulsory

• Published in March 2007.

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ARP 0108:2007

Edition 1.1

Recommended practice

Regulatory requirements for explosion

protected apparatus

IMPORTANT DEFINITIONS

• 3.1.4

• approved test laboratory (ATL)

• test laboratory that is accredited by the government-endorsed

South African accreditation body (SANAS) and appointed by

the approving authority to carry out tests specified in the

appropriate standards and to issue certificates (known as IA

certificates) for explosion-protected apparatus indicating that

such apparatus complies with safety requirements and any

other requirements of the approving authority

• 3.1.5

• approving authority

• body legally responsible for the relevant national statutory

legislation (see foreword)

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• 3.1.13

• product certification scheme

• scheme that aims to ensure that a product covered under the

scheme and that bears the certification mark of the scheme

complies with the defined standard or standards, by using

control elements such as surveillance audits and production

sample assessments

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• 3.1.10

• IA Certificate

• national certificate issued for EPA by an ATL endorsingconformance with the relevant national standards

• NOTE IA certificates apply to both surface (Group II) andmining (Group I) applications.

• 3.1.8

• certificate holder

• organization identified on an IA certificate as themanufacturer or supplier of the certified equipment

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• 3.1.14 repair

• action to restore a faulty apparatus to its fully serviceable condition

and in compliance with the relevant standard.

• NOTE 1 The relevant standard means the explosion protection

standard to which the apparatus was originally designed or a

more recent version.

• NOTE 2 Minor repairs carried out on the user’s premises by

maintenance staff are considered to be maintenance.

• 3.1.15 repairer

• Either a company that is certified under an approved product

certification scheme to repair or overhaul specific EPA or a company

that submits repaired products for batch testing

• NOTE An OEM may also be a repairer.

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Annex A

(normative)

Approved standards, test laboratories

and certification bodies for EPA

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ARP 0108 :2007 Ed 1.1 Annex A Cont.…

A.1 From the date of publication of this recommended practice

(plus a six month phase-in period), all new EPA requires a

certificate issued by an ATL. Such certification will normally

be based on approved national standards (refer to column

2 of table A.1). However, certification in terms of the

standards listed in column 3 of table A.1 may be used as the

basis for issuing such a certificate (IA certificate). No local

testing will be required on equipment certified in terms of

column 3, on condition that the ATL is provided with

adequate evidence of recognized prior testing which

demonstrates compliance with the applicable approved

national standard.

NOTE 1 The SANAS website can be consulted for a list of current ATLs and their respective

scopes of accreditation. Some ATLs also have SANAS accreditation for testing to EN

50000 series standards.

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A.2 This requirement does not apply to equipment purchased

prior to the date of publication of this recommended

practice. (Refer to previous editions of this document and

SANS 10108 for previous certification requirements).

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Table A.1

Approved standards, test laboratories and certification bodies for EPA

1 2 3

Type of apparatus Approved Standards Other Standards

Intrinsically safe electrical (Ex i) SANS 60079-11 IEC 60079-11

SANS 60079-25 (system) IEC 60079-25 (system)

SABS 549a --

SANS 60079-27 IEC 60079-27

-- EN 50020

-- EN 50039

-- UL 913

-- FM 3610

-- CSA C22.2 No. 157

Double-protected electrical SANS 60079-26 (group II) EN 50303


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1 2 3


Flameproof electrical (Ex d) SANS 60079-1 IEC 60079-1

SABS 314-1a --

SABS 314-2a --

-- EN 50018

-- UL 1203

-- CSA C22.2 No. 30

-- AS 2380.2

Pressurized electrical (Ex p) SANS 60079-2 IEC 60079-2

SANS 60079-13 IEC 60079-13

SANS 60079-16 IEC 60079-16

-- EN 50016

-- NFPA 496

Encapsulated electrical (Ex m) SANS 60079-18 IEC 60079-18

-- EN 50028

Table A.1 Cont.….


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1 2 3


Sand-filled electrical or powder-filled

electrical (Ex q)

SANS 60079-5 IEC 60079-5

-- EN 50017

Specially protected electrical (Ex s) Any approved standard (see

3.1.3)

Any approved standard (see

3.1.3)

Increased safety electrical (Ex e) SANS 60079-7 IEC 60079-7

SABS 1031a --

-- EN 50019

Oil immersed electrical (Ex o) b SANS 60079-6 IEC 60079-6

-- EN 50015

Type “n” electrical

(Ex nA, Ex nR, Ex nL, Ex nC)

SANS 60079-15 IEC 60079-15

SANS 970 a --

-- EN 50021

-- FM 3611

a This standard might have been withdrawn, but it has been included because equipment may still be

manufactured to this standard during the validity period of the equipment certification (see annex C). b Ex o

apparatus is not permitted in Group I locations.

Table A.1 Cont.….


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Table A.1 Cont.….

1 2 3


Protected by enclosure “tD”

(previously dust ignition- protected or

–proof (DIP))

SANS 61241-1-1a IEC 61241-1-1a

SANS 61241-1 IEC 61241-1

SABS 969a --

EN 50281-1

UL 1203

CSA C22.2 No. 25

Intrinsically safe electrical (Ex iD) SANS 61241-11 IEC 61241-11

-- EN 50281-11

Pressurized electrical (Ex pD) SANS 61241-4 IEC 61241-4

-- EN 50281-4

Encapsulated electrical (Ex mD) SANS 61241-18 IEC 61241-18

-- EN 50281-18


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Table A.1 Cont.….

1 2 3


Specialized:

Machines powered by

compression-ignition

engines

SANS 868-1-1, SANS 868-1-2,

SANS 868-1-3 (all for Group I machines)

--

SANS 868-3-1, SANS 868-3-2,

SANS 868-3-3 (all for Group II machines)

--

SANS 868-4 (vehicles for use in non-

hazardous locations in underground mines)

--

-- AS 3584 (Group I machines)

SANS 868-1a , SANS 868-2a

(all for Group I machines)

--

SANS 1142a (Group II machines) --

D.C. mining machines SANS 1654 --

Mains-powered

electrical

mining machines

SANS 10086-2 (applicable sections) --


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Table A.1 Cont.….

1 2 3


Cable glands SANS 60079-0 (Ex e) IEC 60079-0 (Ex e)

-- EN 50014 (Ex e)

SANS 60079-1 (Ex d) IEC 60079-1 (Ex d)

-- EN 50018 (Ex d)

SANS 61241-1-1a , SANS 61241-1 IEC 61241-1

SANS 808 (Ex d) --

SANS 1213

(only the section on Ex e glands)

--

Plugs and sockets,

couplers and adaptors

SANS 1489 (Group I, 200 A, 300 A, 425 A ) --

-- BS 5620a (Group I, 200 A)

-- AS 1299 (Group I, 200 A, 300 A)

Helmet light

assemblies

SANS 1438 (Group I) --

Gas measuring

equipment for mines

SANS 1515-1, SANS 1515-2 --


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Table A.1 Cont.….

1 2 3


Fuel dispensers and

metering pumps

SANS 1020 --

-- UL 87

Ingress protected (IP)

enclosures

SANS 60529 IEC 60529

-- EN 60529

NOTE 1 More information with regard to Group II double-protected explosion-protected apparatus is given in IEC

60079-26, and IEC TC 31 is preparing work on a standard for Group I double-protected explosion-

protected apparatus, which will be considered for approval and inclusion in this annex once available.

NOTE 2 Owing to rapid developments in the field of explosion-protected apparatus, the information in this table is

subject to change. The reader should be in possession of the latest edition of this recommended practice.

The relevant test laboratories should be approached for approval of apparatus not covered by this table.

NOTE 3 Although this table is applicable to all explosion-protected apparatus, it is often acceptable to repair

apparatus already in service to its original standard, even if such a standard is no longer valid, as long as

safety is not jeopardized. In cases of doubt, the relevant approving authority should be consulted (also see

annex C).

a This standard might have been withdrawn, but it has been included because equipment may still be manufactured to this

standard during the validity period of the equipment certification (see annex C).


Annex B

(informative)

Marking of electrical apparatus for

use in hazardous locations

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ARP 0108 :2007 Ed 1.1 Annex B Cont.…

B.6 Approved certification bodies and their certification marks

Most approved certification bodies use a certification mark that indicates

unambiguously, or in conjunction with other symbols, that the apparatus is certified

as explosion protected. The following certification marks are commonly found on

apparatus used in South Africa.

B.6.1 South African certification marks

a) CERTEX b) SABS Certification (Pty) Ltd

c) SAEx d) Mining And Surface Certification CC

Annex C

(normative)

Upgrading and maintenance of EPA

certificates for mines and factories

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ARP 0108 :2007 Ed 1.1 Annex C Cont.…

C.1 In South Africa, all EPA used in underground mines (Group I) and on

surface (Group II) shall be covered by an IA certificate. The requirements

in C.2 to C.15 cover the validity of IA certificates.

• Historic IA certificates required for mining / “New” for surface industry.

C.2 All IA certificates issued shall have a validity period of 10 years.

Where a product is in service and its certificate has expired it will

not be affected. IA certificates based on overseas certification will be

valid for a period of one year.

• Once bought / installed by the end user, its certification remains valid.

• Is not required to re-certify existing equipment.

• Requirement for manufacturer / agent of equipment.

• Requirement for certification should be the manufacturer’s / agent and not the end

user.

• Overseas certification...type tested and certified not by an ATL, but certificate used

to obtain local certification.

• Annual review process required to keep on selling the equipment.

• End user to ensure he buys within the validity period on the certificate.

• Review process should be simple... Changes w.r.t. Quality system etc.

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C.3 If, during a validity period or if the product is in service after its certificate

has expired, the product is modified or changed to an extent that it requires

re-evaluation, this shall be done by an ATL and recertified. This re-evaluation

or re-certification (or both) shall take into account the current edition of

the national standard used for certification and the complete product shall

meet the requirements of that standard.

• Modification?? Definition / Examples

• Affecting the Ex characteristics, e.g. Drilling additional entry holes, new type of

gasket on luminaires, changing a component on intrinsic safety etc.

• Current edition of the standard.......... ??????? (still possible)

• Complete product......... ????? This can be problematic, e.g.

• Changing a type of fuse (modification) on intrinsically safe equipment,

requires re-evaluation of the whole circuit?

• Adding an additional entry hole in Ex e or Ex d enclosure requires the whole

unit to be evaluated against the latest standard?

• Abuse by end users / manufacturers also possible if not applied.... E.g. A unit

approved in 1980’s to very old standard can change under the old standard

(Starting as a tree and ending an ostrich)

• Solution?

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C.4 During the validity period of IA certificates the product can be manufactured

or supplied either under the batch test method or under an approved

product certification scheme irrespective of changes to the national

standard, provided that the product does not change from the original

certified design and that no unsafe condition that affects the

products is identified in the original edition of the standard used for

certification (see also B.7).

• Equipment can be sold as long as all is well with the certificate and standards

used.

• A quality system must be in place for the equipment.

• NB. A certificate does not mean the quality system requirements have been met.

• Batch test report.

• Permit for the manufacturer.

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C.5 Repairs and overhauls shall be carried out in such a way that they will

not invalidate the IA certificate. Repairs and overhauls carried out by

a party other than the certificate holder, where the repairer or over hauler

is not in possession of the certification documents, shall be carried out in

such a manner that the product meets the requirements of the

applicable national standards to which the product was originally certified,

or any more recent edition.

• Principles:

• Repair...Definition / example

• Not changing the original certification, e.g.

• Using a fuse of identical type as per original certification,

• Drilling a hole by a permit holder (to control the quality) if there was

provision for additional holes in the original certification

• Skimming the face of a flameproof enclosure

• Changing bearings on a motor (or is this maintenance??)

• etc.

• No Certification documents.... Difficulties

• Is it a modification or a repair... E.g.

• What was the original flamepaths that were tested... (0.2mm gap may have

been tested, while 0.4mm gap is allowed by the standard... Risk?)

• Can modifications be “slipped in” without complying to the latest standard?

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C.6 Should a product be modified or changed in such a way that it no

longer complies with the certified design, it shall be re-submitted to an ATL

for re-evaluation. This re-evaluation shall take into account the current

national standard and the product shall comply with that standard. This applies

to newly manufactured as well as in-service products.

C.7 Current IA certificates and GME certificates

(previously known as V or VM numbers)

a) issued before 1998 shall have a validity period of 5 years after the

publication of ARP0108:2005 Edition 1 (i.e. valid until October 2010), and

b) issued after 1998 shall have a validity period of 10 years after the

publication of ARP0108:2005 Edition 1 (i.e. valid until October 2015).

New IA certificates shall have a validity period of 10 years from the date of issue.

The date of issue and the date of expiry shall be stated on new certificates.

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C.8 A product still in production shall be submitted for re-certification to an

ATL before the IA certificate expires so as to achieve re-certification before

the expiry date.

The product will be re-assessed or tested (or both) and will be re-certified to

the current edition of the national standard. Where the current edition of

the national standard dictates that a product shall be upgraded or changed,

the onus is on the manufacturer or supplier of the product to institute such

upgrades or changes as to ensure that the product is compliant to the

current national standard, as required for re-certification.

C.9 Where a product with a valid IA certificate is found to be unsafe for use,

the certificate holder shall take appropriate steps to rectify the design of

such a product and re-certify such rectified products.

Unsafe products already supplied shall be recalled and both the

regulatory body and the ATL (and approved certification body for

mark holders) that issued the certificate shall be notified.

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C.10 In cases where any system safety parameter of an intrinsically safe

apparatus is changed, consideration shall be given to the safety of the loops

in which the apparatus is used, and such loops shall be re-certified.

• Significant concern raised by industry w.r.t. Recertification of i.s. Loops.

• There are easy ways of getting this done... Speak with your ATL.

• Certification vs. Approval of i.s. Loops.

C.11 Where a standard is superseded during the validity period of a certificate,

then such standard shall still be deemed to apply to the product for the

validity period of the certificate. In terms of batch tested products,

ATLs shall still be able to test to such standards while the certificates

remain valid.

• The product sold within the certificate’s validity period is not affected by later

standard changes (unless unsafe)

• Product installed / bought by the end user are not affected unless modified.

• Batch testing is a quality assurance issue and therefore the original certification

documents are used during this evaluation.

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C.12 Certification that covers variations in product design, or covers a range of

similar products, shall show, in the test report or IA certificate, that each

variation or design has been considered and tested where deemed

necessary, and each variation or design shall be clearly stated in the test

report and IA certificate.

• Certification is not by inference.

• All types / models and design differences / options must be clearly stated.

• E.g. Using earpieces with intrinsic safety radios.

• Model Y flameproof enclosure (not in the certificate) is not automatically

covered because it falls between X and Z (on the certificate).

• Model 1584BX is not automatically covered because 1584B is and there is just

this “small” change but it is identical...

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C.13 Any repairer shall attach to the product a durable, legible and noticeable

label that gives at least the following information:

a) the repairer’s certificate number (when operating under an approved

product certification mark scheme for Ex certified equipment),

b) the IA certificate number,

c) the name of the repairer, and

d) the month and year of repair or overhaul.

NOTE It is not intended that the need for a repair label be applicable to routine maintenance

or replacement of identical parts.

• Method of label attachment should not invalidate Ex.... Part of repair Mark scheme or

evaluation by ATL.

C.14 The label fitted by the original equipment manufacturer shall not be removed,

but labels fitted by previous repairers shall be removed, except in cases

where the repairer submits the finished product to an ATL and has the

product fully tested to the national standards and a new IA certificate is

issued in his name. In this case, only the repairer’s plate shall be fitted.

• The repairer becomes the certificate holder and much more information than in C.13 may

be required.

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C.15 All records related to manufacture, repair or overhaul of Ex certified

apparatus shall be kept for a minimum period of 10 years by the

product certificate holder.

• The repairer/ATL must also maintain the records (Part of quality systems)

• End user??

NOTE The relevant responsible parties for the above are as follows:

1 2

Responsible Party Relevant Clause

Manufacturer or Supplier C.1, C.2, C.4, C.6, C.7, C.8, C.9, C.10, C.15

Repairer C.3, C.5, C.6, C.9, C.10, C.13, C.14, C.15

User C.1, C.2, C.3, C.4, C.5, C.6, C.7, C.10

ATL C.1, C.2, C.11, C.12

Specific challenges

Certification processes

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Specific challenges

• SANAS

• Use of logos (Use on IA certificates / Traceability..overseas, recertification etc

/ SANAS rules / Regulators requirements)

• Annual re-certification (overseas certified product)

• Agent / supplier perspective:

• One year frequency??

• Tedious / expensive / capacity of ATL’s

• Competence of labs

• Content of certificates

• Submission requirements for process

• Rubber stamping?

• Multiple IA numbers for a single type of equipment E.g.

• Not only the OEM may submit a certificate for certification. Therefore, Barrier

ABC may have an IA certificate from different ATL’s on different sites / single

sites.

• Who is the owner of the certf? (ATL or the certf holder? Or the OEM?)

• Who is responsible if something goes wrong?

• “In service”...definition...implications for certification.

• Importer carrying stock?

• In stores?

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Specific challenges

• Package units, e.g. A skid or increased safety enclosure / flameproof enclosure

with multiple separately certified components, e.g. Glands, switches, terminal

blocks etc.

• Separate certification required?

• Can components (e.g. Glands) then be used on other products?

• Marking of units with the new IA number. Challenges.

• Advantages (SANS 10108 meeting 2011):

• Local accountability

• Sets yardstick for industry (set standard) consistency

• Poor quality and unsafe (uncertified) product

• Defendable by Regulator from risk point of view

• Reasonable cost to achieve affordable safety

• Improved quality supply/support certification documentation

• Local interpretation of international standards

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Roelof ViljoenMining And Surface Certification CC

012 653 7594

083 235 5256

[email protected]

mailto:[email protected]



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Process of certification against the requirements of … Presentations/2011... · Process of certification against the requirements of ... Process of certification against the requirements