AODD Pump Standards - ANSI/HI 10.1-10.5 and ATEX Requirements

Standards Overview

Applicable Standards

ANSI/HI 10.1-10.5: Air-Operated Pumps

Standard Structure

HI 10.1 - Nomenclature

Key Definitions:

HI 10.2 - Design Requirements

Pressure Containing Parts:

Minimum Wall Thickness:
t = (P × D) / (2 × S × E - 0.2 × P)

Where:
t = Minimum wall thickness
P = Design pressure
D = Inside diameter
S = Allowable stress
E = Joint efficiency

Design Requirements:

• Structural integrity at rated conditions
• Pressure rating clearly marked
• Safety factor for pressure containment
• Material specifications documented

HI 10.3 - Installation Requirements

Piping Requirements:

Foundation Requirements:

• Level mounting surface
• Vibration isolation if needed
• Access for maintenance
• Drainage provisions

HI 10.4 - Operation

Operating Procedures:

• Start-up sequence
• Normal operation parameters
• Shutdown procedures
• Emergency procedures

HI 10.5 - Testing

Test Requirements:

ATEX Directive 2014/34/EU

Scope

ATEX applies to equipment intended for use in potentially explosive atmospheres where hazardous gases, vapors, mists, or dusts may be present.

Equipment Groups

Zone Classification

Gas/Vapor Zones:

Dust Zones:

Equipment Categories

Temperature Classes

Gas Groups

MESG = Maximum Experimental Safe Gap

ATEX Marking

Example Marking:

CE 0081 II 2 GD c IIB T4

Breakdown:
CE 0081   = CE mark with Notified Body number
II        = Equipment Group II (non-mining)
2         = Category 2 (Zone 1/21)
G         = Gas atmosphere
D         = Dust atmosphere
c         = Constructional safety
IIB       = Gas group (excludes hydrogen)
T4        = Temperature class (max 135°C)

Certification Requirements

AODD Pump ATEX Considerations

Inherent Safety Features:

• No electrical components (pneumatic operation)
• No rotating parts creating sparks
• Low surface temperatures (normally)

ATEX Requirements for AODD:

IECEx Certification

Scope

IECEx is the international certification scheme based on IEC standards, accepted in:

• Australia
• Brazil
• China
• Japan
• Korea
• Middle East
• And many more countries

IECEx vs ATEX

IECEx Marking Example

Ex d IIB T4 Gb

Breakdown:
Ex   = Explosion protected
d    = Flameproof protection
IIB  = Gas group
T4   = Temperature class
Gb   = Equipment Protection Level (Zone 1)

Protection Methods

Common Protection Types

Protection for AODD Pumps

Typical AODD Protection Methods:

Food/Pharma Standards

FDA 21 CFR 177

Requirements:

• Materials safe for food contact
• No migration of harmful substances
• Repeated use approved

Compliant Materials:

• 316 SS (electropolished)
• FDA-grade PTFE
• FDA-grade elastomers
• Approved plastics

3-A Sanitary Standards

Design Requirements:

• Smooth surfaces (125 µ-in finish or better)
• No dead legs or crevices
• CIP/SIP compatible
• Tri-clamp connections

USP Class VI

Biocompatibility Testing:

• Systemic toxicity
• Intracutaneous reactivity
• Implantation testing

Specification Requirements

Specifying Standards in Datasheet

STANDARDS COMPLIANCE:

General:
□ ANSI/HI 10.1-10.5 compliant

Hazardous Area (if applicable):
□ ATEX: II _G/D ___ T_
□ IECEx: Ex ___ II_ T_ G_
□ Gas Group: □ IIA □ IIB □ IIC
□ Zone: ___

Food/Pharma (if applicable):
□ FDA 21 CFR 177 compliant
□ 3-A Sanitary certified
□ USP Class VI
□ Surface finish: ___ µ-in Ra

Other:
□ NACE MR0175 (sour service)
□ CE marking
□ Other: _______________

Documentation Requirements

Summary Tables

Standard Selection Guide

ATEX Category Quick Reference