CGA/GAS - CGA G-13
STORAGE AND HANDLING OF SILANE AND SILANE MIXTURES
|Publication Date:||1 January 2016|
Scope and purpose
This standard governs the installation of systems and sources that are used to store, transfer, or contain silane or silane mixtures. This standard includes guidance for siting, design of equipment, piping and controls, and the fabrication and installation of silane gas storage and closed-use systems. Additional guidance on operational steps associated with the use of silane and silane mixtures as well as fire protection, gas monitoring, ventilation, and related safeguards are provided.
The requirements of this standard apply to pure silane and silane mixtures with a silane content greater than 1.37% . A concentration of 1.37% has been chosen as it represents the lower flammable limit (LFL) for this material in air under conditions of normal temperature and pressure. Silane containers include tube trailers, International Organization for Standardization (ISO) modules, cylinder packs with manifolded cylinders, and individual cylinders. Silane mixes containing other hazardous components (e.g., toxics) may have additional requirements beyond this standard. These other requirements shall also be taken into consideration and may exceed requirements in this standard.
This standard is not intended to provide requirements beyond the first point of control within a user's facility where connections are made to piping systems associated with internal transmission and/or use of this material.
The following subjects are outside the scope of this standard:
- Equipment downstream of a gas cabinet with the exception of valve manifold boxes (VMBs) when used;
- Off-site transportation of compressed gases regulated by the U.S. Department of Transportation (DOT), European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR), or other regulatory authorities; and
- Requirements within the jurisdiction of local, state, provincial/territori
This standard is not intended to replace or fulfill the requirements of a Risk Management Program (RMP) as mandated under Section 112(r) of the Clean Air Act, generally referred to as the Environmental Protection Agency (EPA) RMP rule. A full RMP is comprised of a hazard assessment, a management system, a prevention program, and an emergency response program. Such programs and assessments shall be developed on a case-by-case basis in response to the requirements of the RMP and the circumstances found at each individual company where silane is stored or used.
The purpose of this standard is to prescribe the controls for the installation of silane systems and the recommended methods for storage or transfer of silane or its mixtures from a source of supply to a point of use to provide protection against injury, loss of life, and property damage.
Nothing in this standard is intended to prevent the use of systems, methods, or devices of equivalent or superior quality, strength, fire-resistance, effectiveness, durability, and safety over those prescribed by this standard. Systems, methods, or devices to be used as equivalents shall be supported by technical documentation that demonstrates equivalency. The use of equivalencies shall be subject to approval by the AHJ.